Crack /etc/shadow using JRT

JOHN THE RIPPER

After trying somes ways how to crack password /etc/shadow using John the ripper, finally  I got a way which, although not yet managed to perfect.

On this case i have two user, there are user normal and user root.

1. first

root@sinobi:/etc#

to see passwd and shadow

2.  root@sinobi:/etc# cat passwd

we can see user root  and tes

root@sinobi:/etc# cat shadow

we can see the difference between passwd and shadow. here it is clear that data on the shadow password has been strongly protected.

3.  run John The Ripper

root@sinobi:/pentest/passwords/john# cp /etc/passwd passwd

root@sinobi:/pentest/passwords/john# cp /etc/shadow shadow

4. Merging the "passwd" and "shadow" files

root@sinobi:/pentest/passwords/john# ./unshadow passwd shadow  > crack_file

5. CRACKING THE PASSWORD

we can see that the only one who can crack passwords whereas the root password can not be on crack.