zhaoxuya520/reverse-skill

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.

View source

How to use

  1. Copy the installation command and review the source package before installing it in your own agent environment.
  2. Check the source document for required tools, credentials and supported hosts.
  3. Describe your input and desired deliverable; review the output against the source material.
npx skills add https://github.com/zhaoxuya520/reverse-skill --skill macos-reverse

Before you start

  • Installation does not include a model subscription, API allowance or permission to access your files.
  • Repository stars and installation counts describe activity, not an independent quality or security test.
Original skill document

Rendered from the source repository. Headings, examples, code, tables, links, and referenced images are preserved.

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

bash
file target
codesign -dv --verbose=4 target
spctl -a -vv target 2>&1
otool -L target

2. 静态

text
□ 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

text
□ 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?

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