Learn to use Kerbrute, one of the fastest ways to enumerate and brute force Active Directory (AD) accounts via Kerberos pre-authentication.

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Kerbrute is a fast, open-source tool for enumerating and brute-forcing Active Directory accounts via Kerberos pre-authentication. The tool offers four core modes: userenum for discovering valid usernames without triggering lockouts, bruteforce for testing username:password combinations, passwordspray for testing one password across multiple users, and bruteuser for targeting single accounts. Kerbrute excels during reconnaissance phases by providing stealth enumeration capabilities that avoid basic alerting systems. The tool integrates well with other penetration testing workflows and can be automated using grep and awk for parsing results.

Getting Hands-On with Kerbrute: Practical AD Enumeration & Attack Tactics