Rapid7 Vulnerability & Exploit Database

John the Ripper Password Cracker (Fast Mode)

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John the Ripper Password Cracker (Fast Mode)



This module uses John the Ripper to identify weak passwords that have been acquired as hashed files (loot) or raw LANMAN/NTLM hashes (hashdump). The goal of this module is to find trivial passwords in a short amount of time. To crack complex passwords or use large wordlists, John the Ripper should be used outside of Metasploit. This initial version just handles LM/NTLM credentials from hashdump and uses the standard wordlist and rules.


  • hdm <x@hdm.io>

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use auxiliary/analyze/jtr_crack_fast
msf auxiliary(jtr_crack_fast) > show actions
msf auxiliary(jtr_crack_fast) > set ACTION < action-name >
msf auxiliary(jtr_crack_fast) > show options
    ...show and set options...
msf auxiliary(jtr_crack_fast) > run 

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security