Name: browser-extension-reverse
Author: zhaoxuya520

Imported from zhaoxuya520/reverse-skill (skills/browser-extension-reverse/SKILL.md) via skills.sh. Install upstream with npx skills add zhaoxuya520/reverse-skill --skill browser-extension-reverse. Copyright stays with the author.

Browser Extension Reverse Engineering

ACTION REQUIRED（读完后立刻执行）

NOW: 读取 ../field-journal/precedent-reverse.md
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/）
NEXT: 解压扩展；读 manifest
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/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？

Install browser-extension-reverse and it becomes one more candidate the router can pick - when it fits.

A listing is a routing target with a manifest: what it does, which domains it covers, what it costs and who publishes it. Once installed it sits beside your own models and tools, is scored like any other candidate for each request, and shows up in the trace when it wins. Ratings come from workspaces that installed it, one per account.

{ "ocm": "1", "id": "zhaoxuya520-reverse-skill-browser-extension-reverse", "kind": "skill", "name": "browser-extension-reverse", "description": "Use for authorized reverse engineering of browser extensions (Chrome/Firefox) including manifest analysis, background workers, and extension-based credential or traffic logic recovery.", "publisher": "zhaoxuya520", "version": "1.0.0", "capabilities": { "domains": [ "general" ], "tags": [ "skill-md", "skills-sh" ], "languages": [ "en" ] }, "quality_prior": 0.6, "examples": [ "Use for authorized reverse engineering of browser extensions (Chrome/Firefox) including manifest analysis, background workers, and extension-based credential or traffic logic recovery." ], "primary": false, "metadata": { "source": { "provider": "skills.sh", "repository": "https://github.com/zhaoxuya520/reverse-skill", "path": "skills/browser-extension-reverse/SKILL.md", "ref": "HEAD", "url": "https://www.skills.sh/zhaoxuya520/reverse-skill/browser-extension-reverse", "key": "zhaoxuya520/reverse-skill/skills/browser-extension-reverse/SKILL.md" } }, "instructions": "# Browser Extension Reverse Engineering\n\n## ACTION REQUIRED（读完后立刻执行）\n\n1. `NOW`: 读取 `../field-journal/precedent-reverse.md`\n2. `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/`）\n3. `NEXT`: 解压扩展；读 manifest\n4. `ACT`: 权限面 → 后台脚本 → 网络/存储钩子\n\n## 适用场景\n\n- Chrome/Edge MV2/MV3 扩展分析\n- Firefox 扩展\n- 恶意扩展 IOC、供应链扩展投毒调查\n- 扩展实现的签名/加密/代理逻辑还原\n\n## 工作流\n\n### 1. 包体\n\n```text\n□ crx 解压 / 从 profile 取扩展目录\n□ manifest.json：permissions、host_permissions、background、content_scripts\n□ 评估过度权限（<all_urls>、webRequest、debugger）\n```\n\n### 2. 逻辑\n\n```text\n□ service_worker / background 入口\n□ content_script 注入点与世界（isolated）\n", "cost": { "context_tokens": 305 } }

browser-extension-reverse

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