How can I unlock a password locked rar file without knowing the password?

Question

I have .rar file that is password protected, but I accidentally have forgotten the password. The file extremely important to me.

How can I get my file back? In windows, there was many programs that could remove the password of such a file. Is there one for Ubuntu?

Solution 1

Two more options are:

• RarCrack
• John the Ripper

I have a archive to recover and currently running the first software. With second option - still haven't found a way to do it :/

Solution 2

frcackzip is also one of the password cracker. It can do bruteforce attack also. sudo apt-get install fcrackzip

can install that.

usage: fcrackzip -u -c aA1 -l 4-6 secret.zip

• The -c option lets you select the characterset, 'a' here means lower-case alphabets(small letters).
• The -p option lets you select an initial string to start brute-force attack.

• If you run fcrackzip without the -u option then it will throw a lot of possible passwords. When used with -u, it will try to decompress the file with those possible passwords, thus letting you know the exact one.

• aA1 are indicating that smallcase, uppercase & numbers will include in search.

• If you'd lile to include sepcial char also then you can go for ! .I mean it will be now aA1!
• -l stands for length , 4-6 letters.

Solution 3

I would say find some of those programs and run them under Wine. I'm not sure if you've ever tried this process before, but it takes a VERY long time to complete. I wish you luck in recovering those files! I know that pain...It's almost tragic :(

Comments

[emcek]

use john: 1. rar2john gloom.rar > hash.txt 2. john --format=rar5 hash.txt

[radek]

Added question about JTR software.

[Josh]

What about .rar files?

[not2qubit]

The OP specifically mention RAR, not ZIP.