Learn Ethical Hacking - No More a Secret

John the Ripper is a fast password cracker, currently available for many flavors of Unix, Windows, DOS, BeOS, 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.




John the Ripper is free and Open Source software, distributed primarily in source code form. If you would rather use a commercial product tailored for your specific operating system, please consider John the Ripper Pro, which is distributed primarily in the form of "native" packages for the target operating systems and in general is meant to be easier to install and use while delivering optimal performance.

Proceed to John the Ripper Pro homepage for your OS:

• John the Ripper Pro for Linux
• John the Ripper Pro for Mac OS X

Download one of the latest official free versions (release notes):

• John the Ripper 1.7.8 (stable, Unix - sources, tar.gz, 830 KB) and its signature
• John the Ripper 1.7.8 (stable, Unix - sources, tar.bz2, 680 KB) and its signature
• John the Ripper 1.7.0.1 (stable, Windows - binaries, ZIP, 1360 KB) and its signature
• John the Ripper 1.7.0.1 (stable, DOS - binaries, ZIP, 895 KB) and its signature

Download the latest community-enhanced version (release notes):

• John the Ripper 1.7.8-jumbo-8 (sources, tar.gz, 1371 KB) and its signature
• John the Ripper 1.7.8-jumbo-8 (sources, tar.bz2, 1144 KB) and its signature

 Source :- http://www.openwall.com/john/