Bruteforce dm-crypt using shell expansion

for a in {p,P}{a,A,4}{s,S,5}{s,S,5}; do echo $a|cryptsetup luksOpen /dev/sda5 $a && echo KEY FOUND: $a; done
Lost your luks passphrase? You can always bruteforce from the command line. See the sample output, a simple command for the "pass" word, using combinations of upper/lowercase or number replacement. The generated combinations are: for a in {p,P}{a,A,4}{s,S,5}{s,S,5}; do echo $a; done pass pasS pas5 paSs paSS paS5 ...
Sample Output
for a in {p,P}{a,A,4}{s,S,5}{s,S,5}; do echo $a|cryptsetup luksOpen /dev/sda5 $a && echo KEY FOUND: $a; done
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
No key available with this passphrase.
KEY FOUND: P4s5
...

# ls -l /dev/mapper/
total 0
crw------T 1 root root 10, 236 Apr 16 19:49 control
lrwxrwxrwx 1 root root       7 Apr 16 20:34 P4s5 -> ../dm-1

1
By: rodolfoap
2014-04-16 18:41:50

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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