crack zip password with cracker-ng

Cracking zip password can be made easy with cracker-ng


Installation is simple, assuming you use Debian, Ubuntu or any other similar operating system :

$ git clone
$ cd cracker-ng

# For testers and contributors, always work with on the devel branch:
$ git checkout devel

$ make


Cracking is relatively simple, assuming you have downloaded the awesome Crackstation’s wordlist dictionary.

$ zipcracker-ng -f -w crackstation-human-only.txt

Additionally zipcracker-ng can also be used with other brute-forcing cracking tool such as john and

$ john --incremental --stdout | zipcracker-ng -f FILE -

$ crunch 1 8 -f charset.lst lalpha | zipcracker-ng -f FILE -

Screenshot of zipcracker-ng in action


Squeezing size out of zip and gzip files in Ubuntu Linux

Here is how you can squeeze out few more kilobytes from your zip or gz files by using advzip or advdef from AdvanceCOMP package (installable from Ubuntu respository) :

advpng -z4

mypapit:$ advzip -z4
761604 655677 86%
761604 655677 86%
Saves you almost 6KB per file.

Similarly gzip files can be recompressed the same way to save more space.

advdef -z4 *.gz

mypapit:$ advdef -z4 *.gz
214451 207312 96% coolplayer.tar.gz
21523 20800 96% phex-pkg1.00.tar.gz
26527 25516 96% png2ico-src-2002-12-08.tar.gz
262501 253628 96%
Saves you almost 11KB total.

The differences may be small for most of you, but it means a lot in situation where space is at premium and every little bit of Kilobytes count.

p/s: w00t, this is the first post for 2008!