{"command": "cd /sandbox && unzip -l yabna.zip"}

{"exitCode":0,"stdout":"Archive:  yabna.zip\n  Length      Date    Time    Name\n---------  ---------- -----   ----\n      985  2026-01-24 06:50   Dockerfile\n     7067  2026-01-23 16:18   main.js\n    68791  2026-01-22 22:25   package-lock.json\n      112  2026-01-22 22:25   package.json\n        0  2026-01-22 22:25   public/\n     2378  2026-01-22 22:25   public/admin.html\n     1019  2026-01-22 22:25   public/admin.js\n     2744  2026-01-22 22:25   public/index.html\n     2612  2026-01-22 22:25   public/note.html\n     1044  2026-01-22 22:25   public/note.js\n     3395  2026-01-22 22:25   public/search.html\n     1894  2026-01-22 22:25   public/search.js\n---------                     -------\n    92041                     12 files\n","stderr":""}

{"command": "cd /sandbox && unzip -q yabna.zip"}

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

{"filepath": "yabna/main.js"}

Resource not found: Error calling tool 'workspace_read_file': [Errno 2] No such file or directory: '/data/google-oauth2-114193062149913467935-6ee2e18d-6852-4696-a23f-971a19d1f610/yabna/main.js'

{"filepath": "yabna/public/admin.html"}

Resource not found: Error calling tool 'workspace_read_file': [Errno 2] No such file or directory: '/data/google-oauth2-114193062149913467935-6ee2e18d-6852-4696-a23f-971a19d1f610/yabna/public/admin.html'

{"filepath": "yabna/public/search.html"}

Resource not found: Error calling tool 'workspace_read_file': [Errno 2] No such file or directory: '/data/google-oauth2-114193062149913467935-6ee2e18d-6852-4696-a23f-971a19d1f610/yabna/public/search.html'

{"command": "cat /sandbox/main.js"}

{"exitCode":0,"stdout":"const path = require("path");\nconst crypto = require("crypto");\nconst express = require("express");\nconst puppeteer = require("puppeteer");\nconst cookieParser = require("cookie-parser");\n\nconst app = express();\n\nconst port = process.env.PORT || 3333;\nconst adminCookie = crypto.randomBytes(32).toString("hex");\nconst flagAccessToken = crypto.randomBytes(32).toString("hex");\nconst flag = process.env.FLAG || "SSM{example_flag_for_testing}";\nconst baseUrl = process.env.BASE_URL || http://127.0.0.1:${port}/;\nconst flagId = crypto.randomUUID();\n\nconst publicDir = path.join(dirname, "public");\nconst sendPublicFile = (res, filename) =>\n  res.sendFile(path.join(publicDir, filename));\n\nconst notes = new Map();\nnotes.set(flagId, { note: flag, owner: "admin" });\n\nconst clearNotes = () => {\n  notes.clear();\n  notes.set(flagId, { note: flag, owner: "admin" });\n};\n\nsetInterval(clearNotes, 15 * 60 * 1000);\n\nconst checkAdmin = (req) => {\n  const accessToken = (req.query.access || "").toString().trim();\n  return (\n    req.cookies &&\n    req.cookies.admin === adminCookie &&\n    accessToken === flagAccessToken\n  );\n};\n\napp.use((req, res, next) => {\n  // pls work good\n  res.setHeader(\n    "Content-Security-Policy",\n    default-src 'none'; script-src 'self'; style-src 'unsafe-inline'; frame-src *; connect-src 'self'; form-action 'self'; base-uri 'none';,\n  );\n  res.setHeader("X-Content-Type-Options", "nosniff");\n  next();\n});\napp.use(cookieParser());\napp.use((req, res, next) => {\n  let sessionId = req.cookies?.sid;\n  if (!sessionId) {\n    sessionId = crypto.randomBytes(16).toString("hex");\n    res.cookie("sid", sessionId, {\n      httpOnly: true,\n      secure: false,\n      sameSite: "Lax",\n    });\n    req.cookies.sid = sessionId;\n  }\n  req.sessionId = sessionId;\n  next();\n});\napp.use(express.static(publicDir));\napp.use(express.urlencoded({ extended: false }));\napp.use(express.json({ limit: "16kb" }));\n\napp.get("/", (req, res) => sendPublicFile(res, "index.html"));\napp.get("/notes", (req, res) => sendPublicFile(res, "note.html"));\napp.get("/search", (req, res) => sendPublicFile(res, "search.html"));\napp.get("/admin", (req, res) => sendPublicFile(res, "admin.html"));\n\napp.post("/api/notes", (req, res) => {\n  const note = (req.body.note || "").trim();\n\n  // pls no fake flags\n  if (!note || note.toLowerCase().startsWith(flag.toLowerCase().slice(0, 3))) {\n    res.status(400).send("Bad note.");\n    return;\n  }\n\n  const id = crypto.randomUUID();\n  notes.set(id, { note, owner: req.sessionId });\n  res.redirect(/notes#${id});\n});\n\napp.get("/api/notes/search", (req, res) => {\n  const query = (req.query.q || "").trim().toLowerCase();\n  const isAdmin = checkAdmin(req);\n\n  if (!query) {\n    res.status(400).json({ error: "Query cannot be empty." });\n    return;\n  }\n  if (query.length < 3) {\n    res.status(400).json({ error: "Query must be at least 3 characters." });\n    return;\n  }\n\n  const results = [];\n  for (const [id, noteEntry] of notes.entries()) {\n    if (!noteEntry.note.toLowerCase().startsWith(query)) {\n      continue;\n    }\n    if (!isAdmin && noteEntry.owner !== req.sessionId) {\n      continue;\n    }\n    // DO NOT LEAK SECRETS TO NON-ADMINS\n    if (noteEntry.note.includes(flag) && !isAdmin) {\n      continue;\n    }\n\n    const entry = {\n      id,\n      note:\n        noteEntry.note.length > 100\n          ? noteEntry.note.substring(0, 100) + "..."\n          : noteEntry.note,\n    };\n    results.push(entry);\n  }\n\n  res.json({ results: results.slice(0, 4) });\n});\n\napp.get("/api/notes/:id", (req, res) => {\n  const entry = notes.get(req.params.id);\n  if (!entry) {\n    res.status(404).json({ error: "Note not found." });\n    return;\n  }\n\n  const isAdmin = checkAdmin(req);\n  if (entry.note.includes(flag) && !isAdmin) {\n    res.status(403).json({\n      error: "Forbidden: Admin access required for flag notes.",\n    });\n    return;\n  }\n\n  res.json({ id: req.params.id, note: entry.note });\n});\n\napp.post("/api/admin", async (req, res) => {\n  const url = (req.body?.url || req.query?.url || "").trim();\n  if (!url) {\n    res.status(400).json({ error: "Missing url." });\n    return;\n  }\n\n  const key = req.ip || "unknown";\n  if (!consumeAdminRate(key)) {\n    res\n      .status(429)\n      .json({ error: "Too many admin requests. Try again later." });\n    return;\n  }\n\n  enqueueAdminVisit(url);\n  res.status(202).json({ ok: true, queued: true });\n});\n\napp.get("/api/flag/healthcheck", (req, res) => {\n  const flagEntry = notes.get(flagId);\n  if (!flagEntry || flagEntry.note !== flag) {\n    res.status(500).json({ status: "error", error: "Flag note missing." });\n    return;\n  }\n  res.json({ status: "ok", message: "Flag note present with id " + flagId });\n});\n\nasync function visitNote(url) {\n  const browser = await puppeteer.launch({\n    headless: "shell",\n    args: ["--no-sandbox", "--disable-setuid-sandbox"],\n  });\n\n  try {\n    const page = await browser.newPage();\n\n    await page.goto(${baseUrl}, {\n      waitUntil: "networkidle2",\n      timeout: 5000,\n    });\n    await page.setCookie({\n      name: "admin",\n      value: adminCookie,\n      url: baseUrl,\n      httpOnly: true,\n      secure: false,\n      sameSite: "Lax",\n    });\n    await page.close();\n\n    const page2 = await browser.newPage();\n\n    await page2.goto(url, {\n      waitUntil: "networkidle2",\n      timeout: 5000,\n    });\n\n    // If flag note, enter access token\n    if (\n      page2.url().startsWith(baseUrl) &&\n      page2.url().includes("notes#") &&\n      page2.url().split("notes#")[1] === flagId\n    ) {\n      await page2.click("#access");\n      await page2.keyboard.type(flagAccessToken);\n    }\n\n    await new Promise((resolve) => setTimeout(resolve, 20000));\n\n    await page2.close();\n  } finally {\n    await browser.close();\n  }\n}\n\n// --- ratelimit stuff below, not relevant to challenge ---\n\nconst adminQueue = [];\nlet adminInFlight = 0;\nconst adminConcurrency = 5;\nconst adminJobTtlMs = 60 * 1000;\nconst adminRate = {\n  windowMs: 60 * 1000,\n  max: 3,\n  hits: new Map(),\n};\n\nconst consumeAdminRate = (key) => {\n  const now = Date.now();\n  const entry = adminRate.hits.get(key);\n  if (!entry || now - entry.start >= adminRate.windowMs) {\n    adminRate.hits.set(key, { start: now, count: 1 });\n    return true;\n  }\n  if (entry.count >= adminRate.max) {\n    return false;\n  }\n  entry.count += 1;\n  return true;\n};\n\nconst enqueueAdminVisit = (url) => {\n  adminQueue.push({ url, enqueuedAt: Date.now() });\n  processAdminQueue();\n};\n\nconst processAdminQueue = async () => {\n  while (adminInFlight < adminConcurrency && adminQueue.length) {\n    const job = adminQueue.shift();\n    if (Date.now() - job.enqueuedAt > adminJobTtlMs) {\n      continue;\n    }\n    adminInFlight += 1;\n    (async () => {\n      try {\n        await visitNote(job.url);\n      } catch (err) {\n        console.error("Admin visit failed:", err);\n      } finally {\n        adminInFlight -= 1;\n        if (adminQueue.length) {\n          setImmediate(processAdminQueue);\n        }\n      }\n    })();\n  }\n};\n\napp.listen(port, () => {\n  console.log(Server listening on port ${port});\n});\n","stderr":""}

{"command": "cat /sandbox/public/note.html"}

{"exitCode":0,"stdout":"\n<html lang="en">\n  \n    <meta charset="utf-8" />\n    <meta name="viewport" content="width=device-width, initial-scale=1" />\n    Note\n    \n      :root {\n        color-scheme: light;\n      }\n      body,\n      button,\n      input {\n        font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;\n      }\n      body {\n        margin: 0;\n        padding: 48px 24px;\n        background: linear-gradient(120deg, #f8f3e8, #eef5ff);\n        color: #1d1d1d;\n      }\n      main {\n        max-width: 720px;\n        margin: 0 auto;\n        padding: 36px 32px;\n        background: #ffffff;\n        border: 1px solid #e6e1d4;\n        box-shadow: 0 16px 30px rgba(20, 20, 20, 0.1);\n      }\n      header {\n        display: flex;\n        justify-content: space-between;\n        align-items: baseline;\n        gap: 12px;\n      }\n      label {\n        display: block;\n        margin-top: 20px;\n        font-weight: 600;\n      }\n      input[type="text"] {\n        width: 50%;\n        margin-top: 8px;\n        padding: 10px 12px;\n        border-radius: 10px;\n        border: 1px solid #d6d6d6;\n        font-size: 16px;\n        background: #fbfaf6;\n        box-sizing: border-box;\n      }\n      h1 {\n        font-size: 32px;\n        margin: 0;\n      }\n      .id {\n        font-size: 13px;\n        letter-spacing: 0.08em;\n        text-transform: uppercase;\n        color: #6e6e6e;\n      }\n      .note {\n        white-space: pre-wrap;\n        font-size: 18px;\n        line-height: 1.6;\n        margin-top: 24px;\n        padding: 18px 20px;\n        background: #fdf8ef;\n        border-left: 4px solid #d1a65a;\n      }\n      .status {\n        margin-top: 24px;\n        padding: 12px 14px;\n        border-radius: 10px;\n        background: #f4f6fb;\n        border: 1px solid #dfe5f2;\n        color: #1b2b4a;\n      }\n      .status.error {\n        background: #ffe9e9;\n        border-color: #f0b4b4;\n        color: #7b1a1a;\n      }\n      a,\n      button {\n        font-size: 16px;\n        background: none;\n        border: none;\n        cursor: pointer;\n        display: inline-block;\n        margin-top: 24px;\n        color: #204fa3;\n        text-decoration: none;\n        font-weight: 600;\n      }\n    \n  \n  \n    \n      \n        
Your note
\n        <input type="text" id="access" placeholder="Flag access token" />\n      \n      <div class="note" id="note-body">\n      <div class="status" id="status" hidden>\n      <a href="/">Create another note\n    \n    <script src="/note.js" defer>\n  \n\n","stderr":""}

{"command": "cat /sandbox/public/search.html"}

{"exitCode":0,"stdout":"\n<html lang="en">\n  \n    <meta charset="utf-8" />\n    <meta name="viewport" content="width=device-width, initial-scale=1" />\n    Note Search\n    \n      :root {\n        color-scheme: light;\n      }\n      body {\n        font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;\n        margin: 0;\n        padding: 48px 24px;\n        background: linear-gradient(130deg, #f8f0e5, #eff5ff);\n        color: #1c1c1c;\n      }\n      main {\n        max-width: 980px;\n        margin: 0 auto;\n        padding: 36px 32px 40px;\n        background: #ffffff;\n        border: 1px solid #e6e2d8;\n        box-shadow: 0 16px 30px rgba(20, 20, 20, 0.08);\n      }\n      h1 {\n        font-size: 40px;\n        margin: 0 0 8px;\n      }\n      p {\n        font-size: 18px;\n        margin: 0;\n        color: #3a3a3a;\n      }\n      .search-form {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 12px;\n        align-items: center;\n        margin: 18px 0 0;\n      }\n      .search-form label {\n        font-weight: 600;\n        font-size: 16px;\n      }\n      .search-form input[type="search"] {\n        flex: 1 1 260px;\n        padding: 10px 12px;\n        border-radius: 10px;\n        border: 1px solid #d6d6d6;\n        font-size: 16px;\n        background: #fbfaf6;\n        box-sizing: border-box;\n      }\n      .search-form button {\n        padding: 10px 18px;\n        border-radius: 999px;\n        border: none;\n        background: #1b3d8f;\n        color: #ffffff;\n        font-size: 16px;\n        font-weight: 600;\n        cursor: pointer;\n      }\n      .search-form button:hover {\n        background: #16306e;\n      }\n      .status {\n        margin-top: 18px;\n        padding: 12px 16px;\n        background: #fdf8ef;\n        border: 1px solid #e5dcc6;\n        border-radius: 12px;\n        color: #3b2b12;\n      }\n      .grid {\n        margin: 32px 0 0;\n        display: grid;\n        gap: 22px;\n        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));\n      }\n      .tile {\n        background: #ffffff;\n        border: 1px solid #e7e1d2;\n        border-radius: 16px;\n        overflow: hidden;\n        box-shadow: 0 18px 26px rgba(20, 20, 20, 0.08);\n        display: grid;\n        grid-template-rows: auto 1fr;\n      }\n      .tile h2 {\n        font-size: 14px;\n        letter-spacing: 0.14em;\n        text-transform: uppercase;\n        margin: 0;\n        padding: 14px 16px;\n        background: #f9f4ea;\n        color: #6e5c3b;\n        border-bottom: 1px solid #efe7d7;\n      }\n      iframe {\n        width: 100%;\n        border: 0;\n        height: 260px;\n        background: #ffffff;\n      }\n      .empty {\n        text-align: center;\n        padding: 24px;\n        background: #fffaf0;\n        border: 1px dashed #d8d2c5;\n        border-radius: 12px;\n      }\n    \n  \n  \n    \n      \n        
Search
\n        <form class="search-form" action="/search" method="get">\n          <input\n            id="q"\n            name="q"\n            type="search"\n            minlength="3"\n            placeholder="Start typing..."\n            required\n          />\n          <button type="submit">Search\n        \n        <div class="status" id="status">\n      \n      <section class="grid" id="results">\n    \n    <script src="/search.js" defer>\n  \n\n","stderr":""}

{"command": "cat /sandbox/public/search.js"}

{"exitCode":0,"stdout":"const params = new URLSearchParams(window.location.search);\nconst query = (params.get("q") || "").trim();\nconst access = (params.get("access") || "").trim();\nconst status = document.getElementById("status");\nconst results = document.getElementById("results");\n\nconst setResults = (html) => {\n  results.innerHTML = html;\n};\n\nconst renderItems = (items) => {\n  results.innerHTML = "";\n  for (const item of items) {\n    const tile = document.createElement("div");\n    tile.className = "tile";\n\n    const title = document.createElement("h2");\n    title.textContent = item.id;\n\n    const frame = document.createElement("iframe");\n    frame.src = /notes#${encodeURIComponent(item.id)};\n    frame.loading = "lazy";\n\n    tile.appendChild(title);\n    tile.appendChild(frame);\n    results.appendChild(tile);\n  }\n};\n\nif (!query) {\n  status.textContent = "No query provided.";\n  setResults('<div class="empty">Nothing to search yet.');\n} else if (query.length < 3) {\n  status.textContent = "Query must be at least 3 characters.";\n  setResults('<div class="empty">Search term is too short.');\n} else {\n  (async () => {\n    try {\n      const accessParam = access ? &access=${encodeURIComponent(access)} : "";\n      const response = await fetch(\n        /api/notes/search?q=${encodeURIComponent(query)}${accessParam},\n      );\n      const data = await response.json().catch(() => ({}));\n      if (!response.ok) {\n        throw new Error(data.error || "Search failed.");\n      }\n      const items = data.results || [];\n      status.textContent = ${items.length} note(s) found.;\n      if (!items.length) {\n        setResults('<div class="empty">No notes matched that query.');\n        return;\n      }\n      renderItems(items);\n    } catch (err) {\n      status.textContent = "Unable to load search results.";\n      setResults(<div class=\"empty\">${err.message}</div>);\n    }\n  })();\n}\n","stderr":""}

{"command": "cat /sandbox/public/note.html"}

{"exitCode":0,"stdout":"\n<html lang="en">\n  \n    <meta charset="utf-8" />\n    <meta name="viewport" content="width=device-width, initial-scale=1" />\n    Note\n    \n      :root {\n        color-scheme: light;\n      }\n      body,\n      button,\n      input {\n        font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;\n      }\n      body {\n        margin: 0;\n        padding: 48px 24px;\n        background: linear-gradient(120deg, #f8f3e8, #eef5ff);\n        color: #1d1d1d;\n      }\n      main {\n        max-width: 720px;\n        margin: 0 auto;\n        padding: 36px 32px;\n        background: #ffffff;\n        border: 1px solid #e6e1d4;\n        box-shadow: 0 16px 30px rgba(20, 20, 20, 0.1);\n      }\n      header {\n        display: flex;\n        justify-content: space-between;\n        align-items: baseline;\n        gap: 12px;\n      }\n      label {\n        display: block;\n        margin-top: 20px;\n        font-weight: 600;\n      }\n      input[type="text"] {\n        width: 50%;\n        margin-top: 8px;\n        padding: 10px 12px;\n        border-radius: 10px;\n        border: 1px solid #d6d6d6;\n        font-size: 16px;\n        background: #fbfaf6;\n        box-sizing: border-box;\n      }\n      h1 {\n        font-size: 32px;\n        margin: 0;\n      }\n      .id {\n        font-size: 13px;\n        letter-spacing: 0.08em;\n        text-transform: uppercase;\n        color: #6e6e6e;\n      }\n      .note {\n        white-space: pre-wrap;\n        font-size: 18px;\n        line-height: 1.6;\n        margin-top: 24px;\n        padding: 18px 20px;\n        background: #fdf8ef;\n        border-left: 4px solid #d1a65a;\n      }\n      .status {\n        margin-top: 24px;\n        padding: 12px 14px;\n        border-radius: 10px;\n        background: #f4f6fb;\n        border: 1px solid #dfe5f2;\n        color: #1b2b4a;\n      }\n      .status.error {\n        background: #ffe9e9;\n        border-color: #f0b4b4;\n        color: #7b1a1a;\n      }\n      a,\n      button {\n        font-size: 16px;\n        background: none;\n        border: none;\n        cursor: pointer;\n        display: inline-block;\n        margin-top: 24px;\n        color: #204fa3;\n        text-decoration: none;\n        font-weight: 600;\n      }\n    \n  \n  \n    \n      \n        
Your note
\n        <input type="text" id="access" placeholder="Flag access token" />\n      \n      <div class="note" id="note-body">\n      <div class="status" id="status" hidden>\n      <a href="/">Create another note\n    \n    <script src="/note.js" defer>\n  \n\n","stderr":""}

{"command": "cat /sandbox/public/note.js"}

{"exitCode":0,"stdout":"const noteId = window.location.hash.slice(1);\nconst noteBody = document.getElementById("note-body");\nconst statusDiv = document.getElementById("status");\nconst accessInput = document.getElementById("access");\n\nconst loadNote = async () => {\n  try {\n    const accessToken = accessInput?.value.trim() || "";\n    const accessQuery = accessToken\n      ? ?access=${encodeURIComponent(accessToken)}\n      : "";\n    const response = await fetch(\n      /api/notes/${encodeURIComponent(noteId)}${accessQuery},\n    );\n    if (!response.ok) {\n      const data = await response.json().catch(() => ({}));\n      throw new Error(data.error || "Note not found.");\n    }\n    const data = await response.json();\n    noteBody.innerHTML =\n      data.note.length > 500 ? data.note.substring(0, 500) + "..." : data.note;\n  } catch (err) {\n    noteBody.innerHTML = "";\n    statusDiv.classList.add("error");\n    statusDiv.hidden = false;\n    statusDiv.textContent = err.message;\n  }\n};\n\naccessInput.addEventListener("input", () => {\n  loadNote();\n});\n\nloadNote();\n","stderr":""}