Ophcrack is a Windows password cracker based on a time-memory trade-off using rainbow tables. This is a new variant of Hellman's original trade-off, with better performance. It recovers 99.9% of alphanumeric passwords in seconds and offers the following features: - Runs on Windows, GNU/Linux, FreeBSD, macOS, etc. - Cracks LM and NTLM hashes - Free tables available for alphanumeric LM hashes - Brute-force module for simple passwords - Audit mode and CSV export - Real-time graphs to analyze passwords (optional) - Loads hashes from local SAM, remote SAM, encrypted SAM recovered from a Windows partition