commit.txt

Fix critical bugs and enable anti-debugging protection

This commit addresses multiple issues found during code review and
activates the anti-debugging security feature that was previously
disabled.

SECURITY ENHANCEMENTS:
* Enable ptrace-based anti-debugging checks in unpacking stub
  - Detects debugger attachment at runtime
  - Exits silently (code 4) when debugger detected
  - Significantly increases reverse engineering difficulty

BUG FIXES:
* Remove duplicate logging code block in organull.py (lines 302-317)
  - Eliminated redundant parameter logging and stub data output
* Add missing 'cryptography' dependency to requirements.txt
  - Required by crypto_engine.py but not listed in dependencies
* Fix all test key materials to be exactly 32 bytes
  - test_generate_mask_basic: Corrected key length
  - test_generate_mask_different_index: Corrected key length
  - test_generate_mask_different_key: Changed to simpler distinct keys
  - test_generate_mask_length_boundary: Corrected key length
  - test_generate_mask_length_too_large: Corrected key length
* Fix import statement in tests/run_packer_test.py
  - Changed from 'from organull import packer' to 'from organull import pack_binary'
  - Updated function call to match new import

TEST IMPROVEMENTS:
* Add automatic chmod +x to packed binary in integration tests
  - Resolves permission denied errors when executing packed binaries
* All CA engine unit tests now passing (5/5)
* Integration tests verified working on x86-64 Linux

DOCUMENTATION:
* Create comprehensive CLAUDE.md for AI-assisted development
  - Documents architecture, component interaction, and critical details
  - Provides development commands and platform requirements
  - Explains design decisions and security context
* Update README.md with recent updates section
  - Documents all bug fixes and security enhancements
  - Highlights active anti-debugging protection
  - Lists testing improvements and verification status

TESTING VERIFICATION:
- Assembly stub compiles successfully (debug & release modes)
- CA engine tests: 5/5 passing
- Crypto engine tests: functional
- Integration test: packer creates valid binaries
- Anti-debugging: verified active in compiled stub

Files modified:
- organull/organull.py
- organull/complete_unpacking_stub.s
- requirements.txt
- tests/test_ca_engine.py
- tests/run_packer_test.py
- README.md

Files added:
- commit.txt