macos-reverse
Allows your agent to analyze macOS systems in detail. It helps investigate security, code, and malware on Apple platforms.
What it does
This tool helps investigate suspicious programs and files on macOS. It checks signatures, analyzes code, and understands how programs written in Objective-C and Swift work.
When to use it
- ✓When you encounter a suspicious program or file on your Mac.
- ✓To check if a program has unusual permissions or has been tampered with.
- ✓When trying to understand how a specific macOS program functions internally.
Example of what to ask your AI
“Analyze this suspicious file from my Mac and tell me if it's safe.”
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
It uses macOS-specific tools to look inside programs. First, it checks the program's identity and permissions. Then, it examines the code to understand its structure and behavior.
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 sickn33/agentic-awesome-skills --skill macos-reverseOr download just the file:
curl -L https://raw.githubusercontent.com/sickn33/agentic-awesome-skills/main/plugins/agentic-awesome-skills-claude/skills/macos-reverse/SKILL.md -o SKILL.mdTechnical content (original SKILL.md)
Original text by the author, straight from GitHub.
macOS / Mach-O Reverse Engineering
When to Use
- Analyzing macOS binaries or suspected malware samples.
- Inspecting entitlements, signatures, and ObjC/Swift structures.
适用场景
- Mach-O 可执行文件 / dylib / framework
- .app bundle、LaunchAgent/Daemon
- Objective-C / Swift 符号与 runtime
- 公证/签名、Hardened Runtime、TCC 相关行为分析
- macOS 恶意软件静态/动态分析（联合 malware-analysis）
工作流
1. 包体与签名
file target
codesign -dv --verbose=4 target
spctl -a -vv target 2>&1
otool -L target
2. 静态
□ class-dump / swift-demangle / Hopper / Ghidra / IDA
□ 字符串与 XPC 服务名、TCC 敏感 API
□ LC_LOAD_dylib 依赖与 rpath
3. 动态
□ lldb / Frida
□ fs_usage / log stream 观察
□ 网络：联合 protocol-reverse 或代理
工具链
| 工具 | 用途 |
|---|---|
| otool / nm / codesign | 系统自带 |
| Hopper / Ghidra / IDA | 反编译 |
| class-dump / dsdump | ObjC |
| Frida / lldb | 动态 |
| jtool2 | Mach-O |
参考
references/macho-triage.md../mobile-reverse/（iOS）../ghidra-reverse/../malware-analysis/
路由上下文
上游: MASTER R31
下游: iOS → mobile-reverse；通用样本 → malware-analysis
任务完成自检
- 是否记录签名/Hardened Runtime 状态？
- 是否有地址级/符号级结论？
- Checklist？
Limitations
- Apple Silicon and hardened runtime add unpacking complexity.
- Some analysis requires disabling SIP in a dedicated lab VM.
Adapted from zhaoxuya520/reverse-skill (MIT).
FAQ
What are 'entitlements' and 'signatures'?
'Signatures' are like a seal of authenticity that ensures the program hasn't been altered. 'Entitlements' are special permissions a program has to access certain system parts or data.
What are Objective-C/Swift?
These are the most common programming languages used to create apps on macOS and iOS. Understanding these structures helps in code analysis.
Can I use this to analyze any file type?
This tool focuses on macOS executable files and program bundles (Mach-O files). It's not ideal for other file types like documents or images.
Details
Original description by the author
Authorized macOS and Mach-O reverse engineering: codesign inspection, Objective-C/Swift recovery, endpoint-security surfaces, and Apple-platform malware analysis.
Popularity
- GitHub stars
- 48k
- Ranking position
- #3514
- License
- MIT
- Updated
- 10/15/2026
Comments
- …
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