thick-client
Allows your agent to test the security of desktop applications. It examines how programs store data locally and communicate with other systems.
What it does
This tool helps test the security of programs installed on your computer (not in a web browser). It checks how these programs store information, communicate with others, and update securely.
When to use it
- ✓When you want to check the security of an installed program.
- ✓When analyzing how a program stores passwords or data.
- ✓To understand if a program's updates are secure.
Example of what to ask your AI
“Analyze the security of program X installed on my Windows.”
Want more? Open the sections below.
How to use
The easiest way: copy the message below and paste it into Claude, ChatGPT, Cursor or any AI. It reads the skill and follows the instructions.
Skill link
Ready-to-paste message
How it works
The tool examines the program for weaknesses, such as insecurely saved sensitive information or vulnerable communication channels.
Installation
Easiest way: copy the skill link and paste it into Claude, ChatGPT or Cursor asking it to follow the instructions.
In the terminal (Claude Code, Codex, Cursor), in your project folder:
npx skills add zhaoxuya520/reverse-skill --skill thick-clientOr download just the file:
curl -L https://raw.githubusercontent.com/zhaoxuya520/reverse-skill/main/skills/thick-client/SKILL.md -o SKILL.mdTechnical content (original SKILL.md)
Original text by the author, straight from GitHub.
Thick Client Security Testing
ACTION REQUIRED（读完后立刻执行）
NOW: 读取../field-journal/precedent-pentest.mdNOW: 确认目标是 桌面厚客户端（Win/macOS/Linux GUI 或服务伴生），非纯 WebNOW: case-init；安装包来源与测试账号写入 scopeNEXT: 工具（Burp 上游代理、进程监控、逆向工具）ACT: 信任边界图 → 本地面 → 网络面 → 更新/供应链
适用场景
- C/S 架构客户端、Electron/Qt/.NET WinForms/WPF
- 本地配置/凭证存储、IPC、命名管道
- 客户端强制校验绕过研究（授权）
- 自动更新通道与代码签名验证
工作流
1. 建边界
□ 进程树、子进程、驱动/服务
□ 监听端口与出站域名
□ 本地敏感路径：%APPDATA%、Keychain、注册表
2. 本地攻击面
□ 明文配置、硬编码密钥、调试开关
□ DLL 劫持/搜索顺序（Windows）
□ 数据库文件（SQLite）权限与加密
□ IPC：谁可连接？是否鉴权？
3. 网络面
□ 系统代理 / 应用自定义 TLS
□ 证书钉扎 → 联合 mobile/js 方法学或 Frida
□ API 越权：客户端隐藏的管理接口
4. 逆向验证
□ .NET → dotnet-reverse；原生 → ida/ghidra；Electron → asar + js-reverse
工具链
| 工具 | 用途 |
|---|---|
| Process Monitor / API Monitor | 行为 |
| Burp / mitmproxy | 流量 |
| dnSpy / IDA / Ghidra | 逆向 |
| Sysinternals | Windows 面 |
| asar / nexe 检测 | Electron |
参考
references/thick-client-checklist.md../dotnet-reverse/../ida-reverse/../js-reverse/../api-security/
路由上下文
上游: MASTER R32
下游: 纯协议 protocol-reverse；供应链更新 supply-chain-security
任务完成自检
- 是否画出信任边界？
- 本地+网络面是否都覆盖？
- Checklist？
FAQ
What is a 'thick client'?
It's a program you install and run directly on your computer, like a text editor or a game, as opposed to a website you access through a browser.
Is this dangerous?
No, this tool is used by security experts to find and fix flaws, making programs safer for everyone.
Do I need to be a programmer to use it?
No, you just need to know the name of the program you want to analyze.
Details
Original description by the author
Use for authorized security testing of desktop thick clients including local storage, update channels, IPC, traffic, and client-side trust boundaries.
Popularity
- GitHub stars
- 42k
- Ranking position
- #4787
- License
- MIT
- Updated
- 9/22/2026
Comments
- …
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