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https://github.com/Shiva108/ai-llm-red-team-handbook.git
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shiva108
b3d3bac51f
- Extracted all code examples from handbook chapters - Organized into 15 attack categories - Created shared utilities (api_client, validators, logging, constants) - Added workflow orchestration scripts - Implemented install.sh for easy setup - Renamed all scripts to descriptive functional names - Added comprehensive README and documentation - Included pytest test suite and configuration
85 lines
2.5 KiB
Python
85 lines
2.5 KiB
Python
#!/usr/bin/env python3
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"""
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Homoglyphs and Unicode Substitution
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Source: Chapter_18_Evasion_Obfuscation_and_Adversarial_Inputs
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Category: evasion
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"""
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import random
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import random
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import argparse
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import sys
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class HomoglyphObfuscator:
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"""Replace characters with visually similar Unicode alternatives"""
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def __init__(self):
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# Common homoglyph mappings
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self.homoglyphs = {
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'a': ['а', 'ɑ', 'α', 'ａ'], # Cyrillic, Latin, Greek, Fullwidth
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'e': ['е', 'ℯ', 'ε', 'ｅ'],
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'o': ['о', 'ο', 'ο', 'ｏ'],
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'i': ['і', 'ı', 'ι', 'ⅰ'],
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'c': ['с', 'ϲ', 'ⅽ', 'ｃ'],
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'p': ['р', 'ρ', '𝗉', 'ｐ'],
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's': ['ѕ', 'ꜱ', 'ｓ'],
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'h': ['һ', 'ｈ'],
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'n': ['п', 'ո'],
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'x': ['х', 'ⅹ', 'ｘ'],
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'y': ['у', 'ყ', 'ｙ'],
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}
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def obfuscate(self, text, percentage=0.5):
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"""Replace percentage of characters with homoglyphs"""
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result = []
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for char in text:
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lower_char = char.lower()
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if random.random() < percentage and lower_char in self.homoglyphs:
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replacement = random.choice(self.homoglyphs[lower_char])
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result.append(replacement if char.islower() else replacement.upper())
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else:
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result.append(char)
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return ''.join(result)
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def strategic_obfuscate(self, text, target_words):
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"""Obfuscate specific target words only"""
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result = text
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for target in target_words:
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if target.lower() in result.lower():
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obfuscated = self.obfuscate(target, percentage=1.0)
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result = result.replace(target, obfuscated)
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return result
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# Example usage
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obfuscator = HomoglyphObfuscator()
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# General obfuscation
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original = "How to hack a system"
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obfuscated = obfuscator.obfuscate(original, percentage=0.3)
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print(f"Original: {original}")
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print(f"Obfuscated: {obfuscated}")
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# Strategic targeting
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sensitive_text = "This tool can be used to hack and exploit systems"
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target_words = ['hack', 'exploit']
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strategic = obfuscator.strategic_obfuscate(sensitive_text, target_words)
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print(f"\nStrategic: {strategic}")
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def main():
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"""Command-line interface."""
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument("--verbose", "-v", action="store_true", help="Verbose output")
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args = parser.parse_args()
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# TODO: Add main execution logic
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pass
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if __name__ == "__main__":
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main() |