BRUTEFORCE-LUKS

NAME

bruteforce-luks - try to find the password of a LUKS volume

SYNOPSIS

bruteforce-luks [options] <path to LUKS volume>

DESCRIPTION

The purpose of this program is to try to find the password of a LUKS encrypted volume.

It can be used in two ways:

• brute force attack: try all the possible passwords given a character set. It is especially useful if you know something about the password (i.e. you forgot a part of your password but still remember most of it). Finding the password of a volume without knowing anything about it would take way too much time (unless the password is really short and/or weak).

• dictionary attack: try all the passwords in a file.

The program can use several threads (the number of threads can be specified with the -t command line option).

Sending a USR1 signal to a running bruteforce-luks process makes it print progress info to standard error and continue.

OPTIONS

-b <string>

Beginning of the password.
Default: ""

-e <string>

End of the password.
Default: ""

-f <file>

Read the passwords from a file instead of generating them.

-l <length>

Minimum password length (beginning and end included).
Default: 1

-m <length>

Maximum password length (beginning and end included).
Default: 8

-s <string>

Password character set.
Default: "0123456789ABCDEFGHIJKLMNOPQRSTU
VWXYZabcdefghijklmnopqrstuvwxyz"

Default: 1

EXAMPLES

Try to find the password of a LUKS encrypted volume using 4 threads, trying only passwords with 5 characters:

bruteforce-luks -t 4 -l 5 -m 5 /dev/sdb1

Try to find the password of a LUKS encrypted volume using 8 threads, trying only passwords with 5 to 10 characters beginning with "W4l" and ending with "z":

bruteforce-luks -t 8 -l 5 -m 10 -b "W4l" -e "z" /dev/sda2

Try to find the password of a LUKS encrypted volume using 8 threads, trying only passwords with 10 characters using the character set "P情8ŭ":

bruteforce-luks -t 8 -l 10 -m 10 -s "P情8ŭ" /dev/sdc3

Try to find the password of a LUKS encrypted volume using 6 threads, trying the passwords contained in a dictionary file:

bruteforce-luks -t 6 -f dictionary.txt /dev/sdd1

Instead of passing a block device to the program, you can copy the beginning of the LUKS volume to a file and pass this file to the program:

sudo dd if=/dev/sda1 of=/tmp/luks-header bs=1M count=10
bruteforce-luks -t 4 -l 5 -m 5 /tmp/luks-header

Print progress info:

pkill -USR1 -f bruteforce-luks