KUMEL'S NOTE

Hem, i had never did it before, but i'll try it.
My firs step is searching some tools which there is in my PC, and i've found "fcrackzip".
Can it work? i'll know if i've try it.

Now look a manual using of it with command :
root@victim:~# fcrackzip -h
fcrackzip version 1.0, a fast/free zip password cracker
written by Marc Lehmann <pcg@goof.com> You can find more info on
http://www.goof.com/pcg/marc/
USAGE: fcrackzip
          [-b|--brute-force]            use brute force algorithm
          [-D|--dictionary]             use a dictionary
          [-B|--benchmark]              execute a small benchmark
          [-c|--charset characterset]   use characters from charset
          [-h|--help]                   show this message
          [--version]                   show the version of this program
          [-V|--validate]               sanity-check the algortihm
          [-v|--verbose]                be more verbose
          [-p|--init-password string]   use string as initial password/file
          [-l|--length min-max]         check password with length min to max
          [-u|--use-unzip]              use unzip to weed out wrong passwords
          [-m|--method num]             use method number "num" (see below)
          [-2|--modulo r/m]             only calculcate 1/m of the password
          file...                    the zipfiles to crack
methods compiled in (* = default):
 0: cpmask
 1: zip1, TARGET_CPU=0
 2: zip2, TARGET_CPU=0, USE_MULT_TAB
 3: zip3, TARGET_CPU=5
 4: zip4, TARGET_CPU=5, USE_MULT_TAB
 5: zip5, TARGET_CPU=6
*6: zip6, TARGET_CPU=6, USE_MULT_TAB


I'm try using its option one by one, but i haven't understand the true way to use it.
I have more time to understad it and finaly i've found a way to use it too. ^_^
Let's try it, first step we must describe some possible which using to make a password of that's zip file.
I think it password have length 8 character, there's an uppercase and lowercase characters, and may be use an numeric too. (it's just my opinions)
I'm trying crack it with a command :
root@victim:~# fcrackzip -u -c a -p aaaa File.zip
root@victim:~#

It have exit, may be it can't found a password. Now i'll try crack it with my probably. And its command become as :
root@victim:~# fcrackzip -u -c Aa1 -l 0-8 File.zip
PASSWORD FOUND!!!!: pw == close
root@victim:~#

Bingo!!! i've found its password although i've missing 3hour times to crack it.
If i've know the password have length 5 char and just there's a lowercase char, the command enough using :
root@victim:~# fcrackzip -u -c a -p aaaaa File.zip
PASSWORD FOUND!!!!: pw == close
root@victim:~#

NOTE :
if we don't use option "-u", then the result just give us an 'possible pw found'
Option "-c Aa1" it have meaning that character is A(uppercase), a(lowercase), and 1(numeric).
Option "-l 0-8" it have meaning that length of a password's chars probably there's 0 to 8 chars.
Option "-p aaaaa" it have meaning that length of a password's chars just there's 5 chars.