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Questions tagged [john-the-ripper]

John the Ripper is a fast password cracker, currently available for many flavors of Unix, Windows, DOS, and OpenVMS. Its primary purpose is to detect weak Unix passwords. Besides several crypt(3) password hash types most commonly found on various Unix systems, supported out of the box are Windows LM hashes, plus lots of other hashes and ciphers in the community-enhanced version ("jumbo"). [openwall.com]

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Brute force hex password with exactly two special characters using JohnTheRipper

I want to optimize the way I'm using John the Ripper. I have a password with a know length (9) that consists only of (lower-case) hex characters and exactly two special characters. First I tried ...
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Trying to customize john rules, require at least one symbol in passwords

I"m trying to crack passwords that contains at least one symbol, e.g qwe@123 I'm reading through the cheat sheet here, didn't find anything relevant, does anyone know?
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Using John the Ripper with custom encryption function

I have a working script done with python to do dictionary attack on a few hashes import hashlib def main(): print("Starting...") users = [] with open('users.txt') as f: for line ...
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John the Ripper modify passwords before checking

Assume I have a password I want to crack in the following format: 100 times the character 'a' prepended to Some word found in a wordlist John will probably not be able to crack this with the default ...
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4k views

John the Ripper doesn't use my wordlist file properly

When I use JtR to crack an encrypted zip file I have, it seems like JtR doesn't go through the wordlist I have ... I do the following steps: $ brew install john-jumbo $ export PATH=$PATH:/usr/local/...
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John the Ripper: OpenMP mode vs using the “--fork=N” option?

Clang on OSX doesn't support OpenMP by default, so I could not compile JtR with OpenMP support without another Clang installation. However, after looking at the below option, I wonder what the ...
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655 views

John the ripper 0 password hashes cracked, 38 left

I'm stuck and new to this and would greatly appreciate any assistance! Kali linux latest build trying to use Jack the Ripper I have the hashes in a file called userhash.txt So I try this: (just ...
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Breaking a tough password using john

I'm trying to crack a pretty advanced password on my computer and I've had it running for about a day on john's default settings. Its gotten through roughly (a day times 23000kp/s) passwords. I have ...