It can also crack cpmask'ed images.
Install fcrackzip in ubuntu
sudo apt-get install fcrackzip
This will complete the installation
fcrackzip Syntax
fcrackzip [-bDBchVvplum2] [--brute-force] [--dictionary] [--benchmark] [--charset characterset] [--help] [--validate] [--verbose] [--init-password string/path] [--length min-max] [--use-unzip] [--method name] [--modulo r/m] file...
fcrackzip Examples
fcrackzip -c a -p aaaaaa sample.zip
checks the encrypted files in sample.zip for all lowercase 6 character passwords (aaaaaa ... abaaba ... ghfgrg ... zzzzzz).
fcrackzip --method cpmask --charset A --init AAAA test.ppm
checks the obscured image test.ppm for all four character passwords. -TP fcrackzip -D -p passwords.txt sample.zip check for every password listed in the file passwords.txt.
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There is another way to extract a files form a password protected zip archive rather than crack a password. Let’s say we created a directory /tmp/test and put some files in it. I put /bin/bash, /bin/bunzip2, /bin/bzcat. Then we create a archive file like this: zip archive /tmp/test/* -e . Now files cannot be extracted without a password but it is possible to do this.
To view contest of archive do unzip -l archive.zip. To extract a file from it do:
unzip archive tmp/test/bash | cat /tmp/test/bash > bash
[Reply]
hi Dado,
I tried with your advise but the problem is that the file name inside password-protected zip file is in this order
file 1.jpg. The main problem is that there is space between file (filename) and number(i.e. 1 in this case). So I tried using wild characters like ? or * but did not work. Do you have any idea?
[Reply]
Hi
It should work with unzip archive *.jpg | cat *.jpg > test.jpg
[Reply]
Hi Dado,
I guess i don’t understand where i go to give the command to unzip the archive…help?
[Reply]
Try copying it to home directory then type in terminal fcrackzip -c a -p aaaaaa ~/Sample.zip (number of a stans for number of char.)… hope this helped
[Reply]
thanks
[Reply]
I used this utility but still not able to get the password
fcrackzip -v -b -p aaaa -u data.zip
[Reply]
Hey, how do I do something like this in windows? I’ve tried downloading a number of password cracking programs but many require a license which I dont wanna pay for.
any suggestions?
[Reply]
Zip file is sometimes called an “archive” file. The Zip file itself is really just a container..
You can use some tool to recovery it.
like ZIP Password recovery 5.0 is an easy and effective utility, designed to recover lost or forgotten passwords for ZIP/PKZip/WinZip archives.
[Reply]
This isn’t trying “EVERY” combination? It’s skipping over the password that’s set on the file.
Any ideas?
[Reply]
how to crack the password if we do not remember the length of the password? Pls help.
[Reply]