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lza6lza6/claw-code-tingfeng/skills/reverse/browser-extension-reverse/SKILL.md

browser-extension-reverse

Skill5 starsChanged 12 days agoMITView on GitHub

Use for authorized reverse engineering of browser extensions (Chrome/Firefox) including manifest analysis, background workers, and extension-based credential or traffic logic recovery.

2 other projects use a version of this, 2 of them edited.

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SKILL.md

Browser Extension Reverse Engineering

ACTION REQUIRED(读完后立刻执行)

  1. NOW: 读取 ../field-journal/precedent-reverse.md
  2. NOW: 确认目标是浏览器扩展(crx/xpi/解压目录),不是普通网页 JS(普通 → js-reverse/)
  3. NEXT: 解压扩展;读 manifest
  4. ACT: 权限面 → 后台脚本 → 网络/存储钩子

适用场景

  • Chrome/Edge MV2/MV3 扩展分析
  • Firefox 扩展
  • 恶意扩展 IOC、供应链扩展投毒调查
  • 扩展实现的签名/加密/代理逻辑还原

工作流

1. 包体

□ crx 解压 / 从 profile 取扩展目录
□ manifest.json:permissions、host_permissions、background、content_scripts
□ 评估过度权限(<all_urls>、webRequest、debugger)

2. 逻辑

□ service_worker / background 入口
□ content_script 注入点与世界(isolated)
□ chrome.storage / IndexedDB 密钥
□ 与 `js-reverse` 相同:Observe 网络与消息传递(runtime.sendMessage)

3. 动态

□ 开发者模式加载解压目录
□ chrome://extensions 检查错误
□ DevTools 附加 service worker
□ 必要时 Frida/浏览器 CDP(jshookmcp)

工具链

工具用途
解压/jqmanifest
Chrome DevToolsworker 调试
js-reverse 工具链深度 JS
YARA恶意扩展规则

参考

  • references/extension-analysis.md
  • field-journal 扩展恢复相关条目
  • ../js-reverse/ ../malware-analysis/

路由上下文

上游: MASTER R30 下游: 复杂混淆 JS → js-reverse;投毒调查 → supply-chain / malware

任务完成自检

  • 是否列出权限面与入口脚本?
  • 是否还原关键数据流?
  • Checklist?

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