Description: John the Ripper is a fast password cracker. Currently it is available for many flavors of linux and unix. It is a free password cracking software tool. Primarily it was developed for the UNIX operating system, but now it currently runs on fifteen different platforms (11 Unix flavors, DOS, Win32, BeOS, and OpenVMS). John the Ripper combines a number of password crackers into one package. It can also detect password hash types.
According to wikipedia John the Ripper can be run against various encrypted password formats including several crypt password hash types most commonly found on various Unix flavors (based on DES, MD5, or Blowfish), Kerberos AFS, and Windows NT/2000/XP/2003 LM hash. Additional modules have extended its ability to include MD4-based password hashes and passwords stored in LDAP, MySQL, and others.
This video is part 3 of 3 video series on John the Ripper . The 3rd part covers different mode wordlist,single crack and incremental of John the Ripper.
source : livehacking from Youtube
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Thanks for this series :)
John uses character frequency tables to try plaintexts containing more frequently-used characters first. This method is useful for cracking passwords which do not appear in dictionary wordlists, but it does take a long time to run.
I think this is speciality of the tool. thanks for video.
one can clear concept regarding this tool with these videos. thanks
I love this tool for Hash Cracking And DNS Poisoning :)