browser-extension-reverse
Use for authorized reverse engineering of browser extensions (Chrome/Firefox) including manifest analysis, background workers, and extension-based credential or traffic logic recovery.
How do I install this agent skill?
npx skills add https://github.com/zhaoxuya520/reverse-skill --skill browser-extension-reverseIs this agent skill safe to install?
- Gen Agent Trust Hubpass
This skill provides a structured workflow for reverse engineering browser extensions, including manifest analysis and logic recovery. No malicious code or hidden instructions were found within the skill itself. The primary security consideration is that the agent is instructed to analyze potentially malicious third-party code, which creates a surface for indirect prompt injection.
- Socketwarn
1 alert: gptSecurity
- Snykpass
Risk: LOW · No issues
What does this agent skill do?
Browser Extension Reverse Engineering
ACTION REQUIRED（读完后立刻执行）
NOW: 读取../field-journal/precedent-reverse.mdNOW: 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/）NEXT: 解压扩展；读 manifestACT: 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/jq | manifest |
| Chrome DevTools | worker 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？
How can the creator link this skill?
Add the canonical catalog link to the repository README so users can inspect current installs and available audits. The publishing guide covers the complete discovery path.
<a href="https://skillzs.dev/skills/zhaoxuya520/reverse-skill/browser-extension-reverse">View browser-extension-reverse on skillZs</a>