thick-client

thick-client is a skill for Claude Code, Codex from SeaOf0/dsh-redteam-model. It costs 30 tokens per session (643 once invoked), scanned A, a copy of thick-client, MIT.

A guide for authorized security testing of desktop applications that rely on local software and services, rather than only a web browser. These are often called thick clients and include Windows, macOS, Linux, Electron, and .NET applications.

In plain words
What is it for?
Use it to review local settings and credentials, inter-process communication, database access, outbound traffic, TLS checks, update signing, and client-side restrictions.
Why use it?
Security weaknesses may exist in local files, process communication, update checks, or the way the client trusts servers. Testing only the network API can therefore miss important parts of the application's trust boundary.

Skill for Claude CodeCodex

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

Good fit Use it to review local settings and credentials, inter-process communication, database access, outbound traffic, TLS checks, update signing, and client-side restrictions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/seaof0/dsh-redteam-model/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 SeaOf0/dsh-redteam-model --skill thick-client
Clone the repo
git clone --depth 1 https://github.com/SeaOf0/dsh-redteam-model

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/seaof0/dsh-redteam-model/thick-client.svg)](https://agentmods.dev/skills/seaof0/dsh-redteam-model/thick-client)
Your own site
<a href="https://agentmods.dev/skills/seaof0/dsh-redteam-model/thick-client"><img src="https://agentmods.dev/badge/skills/seaof0/dsh-redteam-model/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 8d 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 8d 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.

modes/binary-analysis/refs/platform/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. 8d 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 SeaOf0/dsh-redteam-model (293 stars, last pushed 3d 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.

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