john the ripper

Password Cracking With John The Ripper – Cracking RAR/ZIP & Linux Passwords

Password cracking with John the Ripper

What is 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

Cracking ZIP/RAR files

  1. Getting the password hash – zip2john / rar2john <filename.zip/rar> > hash.txt
  2. Cracking the password with John – john –format=zip/rar hash.txt
  3. Done

Cracking Linux Passwords

  1. Shadow file location – /etc/shadow
  2. Cracking the shadow file – john /etc/shadow
  3. Done

 

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