Python Code Crypter

A sophisticated Python code obfuscation tool that combines compression, AES encryption, and multiple encoding techniques to protect your Python scripts.

Features

• Multi-layer obfuscation: Compression + AES-256 encryption + encoding
• Multiple encoding options: Base85, Base64, or Hex encoding
• Payload fragmentation: Splits payload into randomized chunks
• Standalone output: Generates self-contained loader files
• Cross-platform: Works on any system with Python 3.6+

Installation

No installation required. Just ensure you have the dependencies:

pip3 install pycryptodome

Usage

Basic Obfuscation

python3 crypter.py -e input.py -o output.py

Command Line Options

Option	Description
-e, --encrypt	Input Python file to obfuscate (required)
-o, --output	Output file name (optional)

Advanced Examples

1. Obfuscate and display in console:

   python3 crypter.py -e myscript.py

2. Obfuscate and save to file:

   python3 crypter.py -e myscript.py -o protected.py

Technical Details

Obfuscation Process

1. Compression: Uses zlib to compress the source code
2. Encryption:
   • Generates random 256-bit AES key
   • Uses CBC mode with random IV
   • PKCS7 padding
3. Encoding (randomly selected):
   • Base85 (ASCII85)
   • Base64
   • Hexadecimal
4. Fragmentation:
   • Splits payload into chunks (40-60 chars each)
   • Randomizes chunk sizes

Loader Structure

The generated loader contains:

• Decoding logic for all supported formats
• AES decryption routine
• Decompression function
• Error handling
• Automatic execution

Disclaimer

IMPORTANT LEGAL NOTICE

1. Intended Use: This tool is designed for legitimate code protection purposes only, such as:

   • Protecting intellectual property
   • Securing sensitive configuration data
   • Anti-tampering mechanisms for authorized software

2. Prohibited Uses: Strictly forbidden to use this tool for:

   • Malware creation or distribution
   • Bypassing license controls of commercial software
   • Any illegal or unethical activities
   • Obfuscating malicious scripts or payloads

3. No Warranty: This software is provided "as-is" without any warranties of any kind, express or implied.

4. Legal Compliance: Users are solely responsible for ensuring their use complies with all applicable laws in their jurisdiction, including:

   • Copyright laws
   • Digital Millennium Copyright Act (DMCA)
   • Computer Fraud and Abuse Act (CFAA)
   • Local cybersecurity regulations

5. Ethical Considerations: By using this tool, you agree to:

   • Use it only on code you own or have permission to modify
   • Not use it to hide malicious behavior
   • Assume all liability for improper use

6. Security Researchers: If using for defensive security research, ensure you have proper authorization before testing on systems you don't own.

Security Notes

• Uses cryptographically strong random numbers
• Proper IV usage for AES-CBC
• Includes integrity checks
• Not immune to reverse engineering - consider this as obfuscation, not true encryption

Limitations

• Increases code size significantly

License

MIT License - Free for personal and commercial use

Contributing

Pull requests welcome. For major changes, please open an issue first to discuss proposed changes.