Cracking passwords using Jhon The Reaper

Download and Install John the reaper using

$ sudo apt-get install john

Cracking Linux password

being root run the following command:

$ /usr/bin/unshadow /etc/shadow /etc/passwd>/tmp/crackpass.db

Now being normal user run the following command

$ john /tmp/crackpass.db

It will take some time depending on the strength of password to crack it.

cracking MD5 passwords

$ john <passwdfile> –format MD5

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