reverse-skills-max: initial public release (restored, redacted, hardened)
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reverse-skill-repo/skills/thick-client/SKILL.md
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reverse-skill-repo/skills/thick-client/SKILL.md
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name: thick-client
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description: Use for authorized security testing of desktop thick clients including local storage, update channels, IPC, traffic, and client-side trust boundaries.
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---
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# Thick Client Security Testing
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## ACTION REQUIRED(读完后立刻执行)
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1. `NOW`: 读取 `../field-journal/precedent-pentest.md`
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2. `NOW`: 确认目标是 **桌面厚客户端**(Win/macOS/Linux GUI 或服务伴生),非纯 Web
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3. `NOW`: case-init;安装包来源与测试账号写入 scope
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4. `NEXT`: 工具(Burp 上游代理、进程监控、逆向工具)
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5. `ACT`: 信任边界图 → 本地面 → 网络面 → 更新/供应链
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## 适用场景
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- C/S 架构客户端、Electron/Qt/.NET WinForms/WPF
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- 本地配置/凭证存储、IPC、命名管道
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- 客户端强制校验绕过研究(授权)
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- 自动更新通道与代码签名验证
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## 工作流
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### 1. 建边界
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```text
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□ 进程树、子进程、驱动/服务
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□ 监听端口与出站域名
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□ 本地敏感路径:%APPDATA%、Keychain、注册表
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```
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### 2. 本地攻击面
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```text
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□ 明文配置、硬编码密钥、调试开关
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□ DLL 劫持/搜索顺序(Windows)
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□ 数据库文件(SQLite)权限与加密
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□ IPC:谁可连接?是否鉴权?
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```
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### 3. 网络面
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```text
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□ 系统代理 / 应用自定义 TLS
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□ 证书钉扎 → 联合 mobile/js 方法学或 Frida
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□ API 越权:客户端隐藏的管理接口
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```
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### 4. 逆向验证
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```text
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□ .NET → dotnet-reverse;原生 → ida/ghidra;Electron → asar + js-reverse
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```
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## 工具链
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| 工具 | 用途 |
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|------|------|
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| Process Monitor / API Monitor | 行为 |
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| Burp / mitmproxy | 流量 |
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| dnSpy / IDA / Ghidra | 逆向 |
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| Sysinternals | Windows 面 |
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| asar / nexe 检测 | Electron |
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## 参考
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- `references/thick-client-checklist.md`
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- `../dotnet-reverse/` `../ida-reverse/` `../js-reverse/` `../api-security/`
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## 路由上下文
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**上游**: MASTER R32
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**下游**: 纯协议 `protocol-reverse`;供应链更新 `supply-chain-security`
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## 任务完成自检
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- [ ] 是否画出信任边界?
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- [ ] 本地+网络面是否都覆盖?
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- [ ] Checklist?
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# 厚客户端清单
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- [ ] 安装/卸载残留与权限
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- [ ] 自动启动与服务
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- [ ] 凭证存放(DPAPI/Keychain/明文)
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- [ ] 更新 URL 与签名校验
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- [ ] 证书固定与代理友好性
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- [ ] 隐藏功能/调试菜单
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- [ ] 本地端口绑定 0.0.0.0
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