🔓 Crack Me If You Can - Utility Scripts

This repository contains a collection of Python scripts designed to assist participants in Crack Me If You Can (CMIYC) style password cracking competitions. These tools streamline workflows for:

• 🔐 Decrypting files with known passwords
• 📧 Submitting cracked hashes via PGP-encrypted email
• 🧹 Sorting and de-duplicating hash lists

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📁 Repository Contents

.
├── decrypt_file.py          # Decrypts files using known passwords
├── mail.cfg.example         # Example configuration file for email settings
├── mail_handler.py          # Handles PGP encryption and email submissions
├── send_submission_file.py  # Encrypts and emails submission files
└── sort_dedup.py            # Sorts and removes duplicates from hash lists

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🔐 decrypt_file.py

Decrypts files using a provided password. Useful for quickly unlocking cracked ZIPs or encrypted archives during competition.

Usage:

python3 decrypt_file.py --input <encrypted_file> --password <password> --output <output_directory>

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🧹 sort_dedup.py

Sorts a file of cracked hashes and removes duplicates to keep your submission clean.

Usage:

python3 sort_dedup.py --input <hash_list.txt> --output <cleaned_list.txt>

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📧 PGP Email Submission Tools

🔧 Step 1: Configure Email Settings

Copy the example config and edit:

cp mail.cfg.example mail.cfg

Edit mail.cfg:

[EMAIL]
smtp_server = smtp.example.com
smtp_port = 587
smtp_user = your_email@example.com
smtp_pass = your_password
recipient = recipient@example.com

[PGP]
public_key = path/to/contest_public_key.asc

📤 Step 2: Send Submission

Use send_submission_file.py to encrypt and email your cracked hashes.

Usage:

python3 send_submission_file.py --file <submission_file.txt>

Behind the scenes, this uses mail_handler.py to PGP-encrypt your file and send it using SMTP.

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🛠️ Requirements

• Python 3.x
• gnupg or python-gnupg (for PGP encryption)
• smtplib, email, configparser (all standard lib)
• GPG installed and configured
• Required Python packages:

pip3 install python-gnupg

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🚀 Suggested Workflow

# 1. Decrypt recovered files
python3 decrypt_file.py --input secrets.zip --password cracked123 --output loot/

# 2. Clean up and dedupe hashes
python3 sort_dedup.py --input cracked_hashes.txt --output cleaned_hashes.txt

# 3. Submit via encrypted email
python3 send_submission_file.py --file cleaned_hashes.txt

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⚠️ Disclaimer

These scripts are intended for use in ethical and legal password cracking competitions only, such as DEFCON's Crack Me If You Can (CMIYC). Use responsibly.

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“Hash hard, submit smart, and may your wordlists be ever fruitful.” 🔥