john

john

John the ripper is a fast password cracker. This tool is meant to find weak user passwords, which could compromise system security. It comes with three options:

Fast crack mode:

In this mode, John only tries the usernames and derived words against the hashed passwords.

Dictionary mode:

In this mode all words from the installed dictionary are tried to attack the hashed passwords.

Full crack mode:

This slowest mode tries all words from the dictionary, as well as rules generated variations of these, against the user's passwords

The "normal" version of John exposes cracked passwords in clear-text. This makes John difficult to operate with in a professional environment. Therefore, SLAD uses a John the Ripper version which has been patched. In this version cracked passwords are not exposed anymore, instead only the user-accounts with crackable passwords are identified.

john