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anti-debugging-techniques

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Anti-debugging detection and bypass playbook. Use when reversing protected binaries that detect debuggers via ptrace, PEB flags, timing checks, or signal/exception handlers on Linux and Windows.

knowledge/hack-skills/skills/anti-debugging-techniques/SKILL.md

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# SKILL: Anti-Debugging Techniques — Detection & Bypass Playbook

> **AI LOAD INSTRUCTION**: Expert anti-debug techniques across Linux and Windows. Covers ptrace, PEB flags, NtQueryInformationProcess, timing attacks, signal-based detection, TLS callbacks, VEH tricks, and all corresponding bypass methods. Base models often miss the distinction between user-mode and kernel-mode detection and the correct patching strategy for each.

## 0. RELATED ROUTING

- [code-obfuscation-deobfuscation](../code-obfuscation-deobfuscation/SKILL.md) when the binary also uses control flow flattening, VM protection, or string encryption
- [vm-and-bytecode-reverse](../vm-and-bytecode-reverse/SKILL.md) when the anti-debug sits inside a custom VM dispatcher
- [symbolic-execution-tools](../symbolic-execution-tools/SKILL.md) when you want to symbolically skip anti-debug checks entirely

### Advanced Reference

Also load [ANTI_DEBUG_MATRIX.md](./ANTI_DEBUG_MATRIX.md) when you need:
- Complete cross-reference matrix of technique × OS × detection method × bypass method