thick-client

thick-client is a skill for Claude Code, Codex from Asaiuta/reverse-workbench-skill. It costs 30 tokens per session (643 once invoked), scanned A, a copy of thick-client, MIT.

A security-testing workflow for desktop applications such as Windows, macOS, and Linux clients, including Electron, Qt, and .NET programs. A thick client is an application that performs substantial work on the user's computer while connecting to a server.

In plain words
What is it for?
It helps inspect local storage, processes, IPC, network traffic, certificate checks, update channels, and client-hidden API access.
Why use it?
It checks risks that ordinary web testing can miss, such as exposed local files, weak inter-process communication, unsafe updates, and client-side trust checks.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It helps inspect local storage, processes, IPC, network traffic, certificate checks, update channels, and client-hidden API access.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/asaiuta/reverse-workbench-skill/thick-client
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Asaiuta/reverse-workbench-skill --skill thick-client
Clone the repo
git clone --depth 1 https://github.com/Asaiuta/reverse-workbench-skill

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for thick-client

README.md
[![agentmods](https://agentmods.dev/badge/skills/asaiuta/reverse-workbench-skill/thick-client.svg)](https://agentmods.dev/skills/asaiuta/reverse-workbench-skill/thick-client)
Your own site
<a href="https://agentmods.dev/skills/asaiuta/reverse-workbench-skill/thick-client"><img src="https://agentmods.dev/badge/skills/asaiuta/reverse-workbench-skill/thick-client.svg" alt="Measured on agentmods" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 643 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00030 $0.00643
Opus 5 $0.00015 $0.00321
Sonnet 5 $0.00006 $0.00129
Haiku 4.5 $0.00003 $0.00064

Measured 4d ago against content hash 714f7e2499b5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

thick-client scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to thick-client — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/thick-client/SKILL.md · 80 lines

What it actually says

Thick Client Security Testing

ACTION REQUIRED(读完后立刻执行)

  1. NOW: 读取 ../field-journal/precedent-pentest.md
  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
  3. NOW: case-init;安装包来源与测试账号写入 scope
  4. NEXT: 工具(Burp 上游代理、进程监控、逆向工具)
  5. 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?
Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 80 lines · 30 tokens per session scan A 714f7e2499b5

Subscribe to this mod's changes

thick-client is a skill published in the GitHub repository Asaiuta/reverse-workbench-skill (2 stars, last pushed 24d ago), licensed MIT. It adds 30 tokens to every session and 643 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to thick-client, differing in 0 lines, and is treated as a copy.