Imported from sickn33/agentic-awesome-skills (
skills/macos-reverse/SKILL.md). Install upstream withnpx skills add sickn33/agentic-awesome-skills --skill macos-reverse. Copyright stays with the author (MIT).
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 target2. 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 rpath3. 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.
- Do not disable SIP or other protections on the user’s working Mac as a routine debugging step. If dynamic analysis requires a different security posture, use a separately approved disposable lab and record its limitations; start with static signature, dependency and entitlement inspection.
Adapted from zhaoxuya520/reverse-skill (MIT).
