Firefox_Decrypt_ASN.1-Delphi

A Delphi-based utility for recovering stored passwords from Firefox profiles. This tool can decrypt passwords stored in Firefox's password manager using the browser's built-in encryption mechanisms.

⚠️ Security Notice

This tool is intended for legitimate password recovery purposes only, such as:

Recovering your own forgotten passwords
Data migration between browsers
Personal security auditing

Please ensure you have the legal right to access any passwords you attempt to decrypt.

🌟 Features

Supports multiple Firefox profiles
Handles newer Firefox encryption schemes
Multiple output formats:
- Human-readable text
- JSON
- CSV
Automatic profile detection

🏗️ Technical Details

The tool implements Firefox's password encryption scheme, including:

ASN.1 structure parsing
3DES and AES-256 decryption
PBKDF2 key derivation
NSS (Network Security Services) master key extraction
Support for key4.db databases

🔧 Prerequisites

Windows operating system
Firefox profile with saved passwords
Delphi development environment (if building from source)
sqlite DLL (include)
Required Delphi components:
- UniDAC (for SQLite database access)
- DEC (Delphi Encryption Components)

🚀 Usage

FirefoxDecrypt.exe [options]

Options:
  -f, --format FORMAT   Output format (human, json, csv)
  -l, --list           List available profiles
  -c, --choice NUMBER  Profile to use (starts with 1)
  -h, --help          Show this help message

Examples

List available profiles:

FirefoxDecrypt.exe --list

Decrypt passwords from specific profile:

FirefoxDecrypt.exe --choice 1

Export as JSON:

FirefoxDecrypt.exe --format json

How it Works

Locates Firefox profiles on the system
Extracts the master key from key4.db
Reads encrypted passwords from logins.json
Decrypts individual entries using:
- Global salt from key4.db
- Master key derived from metadata
- Individual encryption keys for each entry

📄 License

This project is intended for educational and recovery purposes only. Please ensure compliance with applicable laws and regulations in your jurisdiction.

⚠️ Disclaimer

This tool comes with no warranties or guarantees. Users are responsible for ensuring they have the legal right to access any passwords they attempt to decrypt.

Made with ❤️ using Delphi RAD Studio

BitmasterXor/Firefox_Decrypt_ASN.1-Delphi