Monday, July 12, 2010

Crack password with john the ripper

Welcome back :)

Crack password with john the ripper


example : User:gyuJo098KkLy9

you can crack that password use click here

how to use ?
first exctract the files
exctract in desktop.

open start>run>cmd
cd desktop
cd
usage :
single: Single crack mode. This is only recommended for weak passwords as it includes only a few rules and a small wordlist.
Usage: john -single crackme.txt

wordfile: Uses a wordlist (basically a dictionary attack). What this does is tries every word in the list until it finds a match or you reach the end of the list. This is quicker than the default (bruteforce) attack, but I don't recommend this because it doesn't always find a match. More notes on wordlists below.
Usage: john -wordfile:password.lst crackme.txt

or

Usage: john -incremental:alpha crackme.txt (only letters)
           john -incremental:digits crackme.txt (only numbers)
           john -incremental:lanman crackme.txt (letters, numbers, and some special characters)
           john -incremental:all crackme.txt (all characters)

to restore
restore: Ok, let's say that you need to stop the crack in the middle. Press crtl+break. A file will be created in the JTR directory named 'restore' (no quotes doofus, and yes, no file extention). You can start the crack back up from that restore point. If you used the-session option you probably have a different filename.

Usage: john -restore:restore



  • session: Use this if you know that you will have to stop JTR in the middle of a crack. It allows you to create a new file that holds the data of your session. You can then restore your session later.


    Usage: john -session:[save to filename] crackme.txt




  • status: Shows how far you got before stoping a crack (provided you used the -session option).


    Usage: john -status:[filename]




  • show: Shows how many passwords have been cracked in a file and how many are left.


    Usage: john -show crackme.txt




  • test: Shows how fast JTR will work on your computer.


    Usage: john -test




  • users: Cracks the password only for the user or users you tell it to.


    Usage: john -users:User crackme.txt




  • groups: Cracks the passwords only for the group or groups you tell it to.


    Usage: john -group:lamers crackme.txt




  • shells: Cracks the passwords only for the shell or shells you tell it to.


    Usage: john -shells:shelly crackme.txt




  • salts: Cracks the salts that have at least the number of passwords you specify.


    Usage: john -salts:2 crackme.txt
    source : osix.net



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