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browser-extension-reverse

Analyze authorized browser extensions for Chrome, Edge, and Firefox. Inspect permissions, background scripts, storage, and network activity to reconstruct key data flows and explain credential handling, signing, encryption, or proxy behavior.

中文简介正在准备中。当前显示英语简介。

原文查看原文说明

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

查看安装方法

适用场景

  • Review extension permissions and entry scripts
  • Trace credential handling and network data flows
  • Investigate suspicious or compromised extensions
  • Reconstruct signing, encryption, or proxy logic

包含的文件(2)

  • SKILL.md2.0 KB
  • references/extension-analysis.md328 B

SKILL.md(原文)

安装前可以查看交给 AI 代理的指令内容。

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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