ToolsFebruary 9, 20261 min readby 0xt0pus

John the Ripper

Password cracker supporting many hash types with wordlist and rule-based attacks

#password-cracking#hash-cracking

John the Ripper

Description

John the Ripper is a password cracking tool. It supports many hash formats and can crack password hashes obtained from various sources including Linux shadow files, Kerberos tickets, SSH keys, and more.

Usage 1: Crack Hash with Wordlist

Command:

john --wordlist=/usr/share/wordlists/rockyou.txt hash-asc

Usage 2: Crack Hash with Rules

Use the best64 rule for password mutations.

Command:

john --wordlist=/usr/share/wordlists/rockyou.txt --rules=best64 pdf.hash