unshadow /etc/passwd /etc/shadow > /opt/john_the_ripper/john-1.7.9/run/myhacktest.tst” In this sample, my filename is myhacktest.tst. JTR can’t read “ shadow” file, so you have to un-shadow it first to a file. In this test, I add a new user name ‘ test‘ with password “123”. Now, we test to crack our linux password. My command will be: “ make linux-x86-sse2”.
Now, type again the installation command+your linux_system. I used Intel Core2 duo 32 bit, so I choose ‘ linux-x86-sse2”. JTR will display list of Linux systems based on processor. Go to ‘ src‘ folder inside your extracted file. You can type: “ su – “or “ su root” to change the access level. The command will extract your JTR package file.Ĭhange your access level to root. The name can be different depend on which version that you have. Type ‘ sudo tar xvzf‘ following by JTR file name. In this tutorial, I put JTR under /opt folder. John The Ripper is a free and open source and distributed in source code file but for easy installation you can buy John The Ripper Pro.īefore we start, you have to download JTR from put it in your selected folder. It supports several crypt password hash types in Unix, Kerberos AFS and windows NT/2000/XP LM hashes.
Now, it’s available for Unix, Linux, Windows, DOS, BeOS and Open-VMS. At the first time, it’s design to detect the weakness of UNIX password. John The Ripper (JTR) is one of best password cracker ever built.
