How to crack Windows password with John the Ripper?

If you are seeking a free Window password cracker to crack your forgotten Windows login password, you would like the following information. In this article, we will talk about how to crack Windows password by using this open source software – John the Ripper.

What’s John the Ripper?

According to Wiki, John the Ripper is a free password cracking software tool. Initially developed for the UNIX operating system, it currently runs on fifteen different platforms. It is one of the most popular password testing/breaking programs as it combines a number of password crackers into one package, autodetects password hash types, and includes a customizable cracker. It can be run against various encrypted password formats including several crypt password hash types most commonly found on various Unix flavors Kerberos AFS, and Windows NT/2000/XP/2003 LM hash.

How to crack Windows password with John the Ripper?

Go to its official website and download the latest JTR windows version.

Now unzip it and save the folder to c:.

Go to the RUN folder and you will see “John-837″ (or something like that) and rename it “John” Also…

Now find a good DES hash.. Right now I will use:


Now save your hash in a text file called passwd.txt. Put that file in the “RUN” folder of john.

Now go to the start menu and click on run. Now type “cmd” and press “ok”

Now in the command prompt, type:

“cd c:johnRUN” (Put slashes were they need to go. sorry but for some reason this artical wont let me.)

Now type “John passwd.txt” and it will start to brute force the password. Just press any key to see the progress or press “CTRL C” to stopt it. When it’s done it will let you know.

Now you can type “john -show passwd.txt” and it will successfully show you the cracked password :D

An alternative solution

These steps are collected from website. As showed in the user guide, it’s rather complicated if you are not good at computer. So if you intend to reset your Windows password on your own, I’ll recommend you to try Rekeysoft Windows Password Recovery instead of this application. With Rekeysoft Windows Password Breaker, you can instantly reset forgotten Windows password in 4 simple steps.

Step 1. Download and install Rekeysoft Windows Password Recovery.

Step 2. Create a bootable password reset disk with CD/DVD/USB.

Step 3. Boot your locked computer from the bootable disk.

Step 4. Reset lost Windows password to blank.

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