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competition-bundle-sourcemap-recovery

competition-bundle-sourcemap-recovery

github.com/zhaoxuya520Security43.7k94 installsUpdated 5w ago
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About competition-bundle-sourcemap-recovery

competition-bundle-sourcemap-recovery is a security skill for challenges where runtime behavior is found in built assets, source maps, or obfuscated loaders. It reconstructs the smallest served-asset path that explains the active behavior.

Key features

  1. 01Cataloging served assets and manifests
  2. 02Tracing chunk loaders and module registries
  3. 03Using source maps to recover runtime structure
  4. 04Separating served artifacts from repository source

Use cases

  1. 01Finding active routes or API calls in bundles
  2. 02Investigating hidden route code or chunk loading
  3. 03Verifying behavior when served assets differ from source

Install

Copy the command and run it in a terminal.

$npx skills add https://github.com/zhaoxuya520/reverse-skill --skill competition-bundle-sourcemap-recovery

After installing, type/competition-bundle-sourcemap-recoveryin Claude Code to confirm it loaded.

Bundled filesagents/openai.yamlreferences/bundle-sourcemap-recovery.md

Details

From the project README

Competition Bundle Sourcemap Recovery

Use this skill only as a downstream specialization after $ctf-sandbox-orchestrator is already active and has established sandbox assumptions, node ownership, and evidence priorities. If that has not happened yet, return to $ctf-sandbox-orchestrator first.

Use this skill when runtime truth lives in built assets, source maps, chunk tables, or obfuscated loader flow rather than in checked-in source alone.

Reply in Simplified Chinese unless the user explicitly requests English.

Quick Start

  1. Start from the served artifact set: entry HTML, build manifest, bootstrap bundle, chunk map, and source maps.
  2. Record chunk ids, route chunks, loader functions, endpoint strings, and config keys before broad manual deobfuscation.
  3. Reconstruct the smallest runtime graph that explains which asset executes now.
  4. Keep served artifact truth separate from repository source unless parity is proven.
  5. Reproduce the smallest asset-to-runtime boundary that proves the decisive behavior.

Workflow

1. Map The Served Artifact Set
  • Record entry HTML, script tags, preload hints, manifest files, asset map, chunk registry, and source map URLs.
  • Note framework-specific artifacts such as route manifests, client reference manifests, or lazy-loader tables when present.
  • Keep emitted filenames, hash suffixes, and route ownership tied together.
2. Reconstruct Runtime Structure
  • Follow bootstrap code, chunk loaders, module registry, string decoders, and lazy import boundaries.
  • Use source maps, manifest files, and stable symbol clusters to recover route names, API calls, feature flags, and hidden panels.
  • Distinguish build-time intent from the bundle that is actively served now.
3. Reduce To The Decisive Bundle Path
  • Compress the result to the smallest sequence: served asset -> loader path -> module or symbol -> runtime effect.
  • State clearly whether the decisive weakness lives in manifest drift, chunk loading, hidden route code, string decoding, or stale source assumptions.
  • If the task shifts from built assets to SSR or template enforcement, hand back to the tighter template-render skill.

Read This Reference

  • Load references/bundle-sourcemap-recovery.md for the artifact checklist, deobfuscation checklist, and evidence packaging.

What To Preserve

  • Served filenames, chunk ids, manifest entries, source map paths, recovered symbols, and endpoint strings
  • The exact executing bundle or module that proves the runtime branch
  • One minimal asset-to-runtime sequence that reaches the decisive effect

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