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macos-reverse

Use for authorized macOS and Mach-O reverse engineering including codesign, Objective-C/Swift recovery, endpoint security surfaces, and Apple platform malware analysis.

Published by zhaoxuya520 ↗zhaoxuya520/reverse-skill

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macos-reverse

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Use macos-reverse to analyze the authorized macOS [Mach-O binary] statically, documenting its signing and Hardened Runtime status, linked libraries, notable strings, and sensitive API or XPC references; deliver symbol- or address-level findings.

Required inputs

  • [Mach-O binary]

User-approved starter prompt based on a pinned source version; check current skill requirements before running. Task evidence ↗

SKILL.md

name: macos-reversedescription: Use for authorized macOS and Mach-O reverse engineering including codesign, Objective-C/Swift recovery, endpoint security surfaces, and Apple platform malware analysis.

macOS / Mach-O Reverse Engineering

ACTION REQUIRED（读完后立刻执行）

  1. NOW: 读取 ../field-journal/precedent-reverse.md
  2. NOW: 确认目标为 macOS/Mach-O/App bundle（iOS IPA → mobile-reverse/）
  3. NEXT: tool-index；jtool2/lldb 等
  4. ACT: 签名与装载信息 → 静态 → 动态（lldb/Frida）

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 / dsdumpObjC
Frida / lldb动态
jtool2Mach-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？