ophcrack ☆

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Description:
Microsoft Windows password cracker using rainbow tables

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Security

Tags: security password-recovery forensics windows rainbow-tables

Install: brew install ophcrack

About:
Ophcrack is a password cracker for Windows that uses rainbow tables to recover passwords from hashes. It is a highly efficient implementation of the time-memory trade-off technique, allowing users to crack passwords in seconds without needing brute-force attacks. The tool is particularly effective against LM hashes and weaker NTLM hashes found in older Windows versions.

Key Features:

Automated hash cracking using precomputed rainbow tables
Live CD available for booting a system without installation
GUI and command-line interface options
Supports Windows LM and NTLM hashes

Use Cases:

Recovering lost Windows administrator or user passwords
Auditing and testing the strength of Windows passwords in a corporate environment
Digital forensics investigations

Alternatives:

John the Ripper – A versatile password cracking tool that supports many hash types and uses brute-force or dictionary attacks, unlike Ophcrack's reliance on rainbow tables.
Hashcat – A high-performance, GPU-accelerated password recovery tool that supports a vast number of hashing algorithms.

Version History

Detected	Version	Rev	Change	Commit
Sep 16, 2025 9:40am		1	VERSION_BUMP	04a724c6
Sep 10, 2024 2:30pm		1	VERSION_BUMP	515bd15c