🔐 Password Cracker (ZIP & PDF)

This project demonstrates how to ethically crack password-protected ZIP and PDF files using Python and wordlists. It includes a basic ZIP cracker and a multi-threaded PDF cracker for faster performance.

Before starting this project go to your browser & search for-

rockyou.txt github

download it then move the rockyou.txt file to the working directory of this project, where the other files exists.
Now, let's start the project:

⚠️ For educational and ethical use only. Do not use this tool for unauthorized or malicious purposes.

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📁 Project Structure

Password_cracker/
├── test.pdf                    # Password-protected PDF
├── test.zip                    # Password-protected ZIP
├── rockyou.txt                 # Wordlist file containing possible passwords
├── README.md                   # Project documentation (this file)
├── zip_cracker.py              # Script to brute-force ZIP passwords
└── pdf_cracker_threaded.py     # Multi-threaded script to crack PDF passwords

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🚀 Usage

1. 🔓 Crack a ZIP File

python zip_cracker.py

zip_cracker.py

📌 Make sure:

• Your ZIP file is named test.zip
• already a test.zip is given

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2. 🔓 Crack a PDF File (Multi-threaded)

🔧 Requirements:

• ✅ Install Required Library:

pip install pikepdf

then run this code:

python pdf_cracker_threaded.py

pdf_cracker_threaded.py

📌 Make sure:

• Your PDF is named test.pdf
• already a test.pdf is given

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🧠 How It Works

1. ZIP Cracker

Reads passwords from the wordlist one by one.
Attempts to extract the ZIP file using each password.
Stops when the correct password is found.

2. PDF Cracker (Multi-threaded)

Utilizes ThreadPoolExecutor to try many passwords concurrently.
Uses pikepdf to check if the PDF can be opened with each password.
Stops all threads once a valid password is found.

✅ Example Output

[❌] Tried: admin
[❌] Tried: 123456
[✅] Password found: chocolate1

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🔒 Legal & Ethical Notice

This tool is intended for:
Learning and demonstration
Ethical hacking and authorized testing
Recovering your own forgotten passwords
⚠️ Do not use this for illegal or unauthorized purposes.

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📬 Author

Made with ❤️ by Sridip
GitHub | LinkedIn
If you like this, ⭐ the repo and feel free to contribute!