Forgot the password to your Windows admin account? There are a lot of different reasons why one would want to hack a Windows password. This tutorial will show you how to use John the Ripper to crack Windows 10, 8 and 7 password on your own PC.

Jun 05, 2018 John the Ripper Wordlist Crack Mode. In this mode John the ripper uses a wordlist that can also be called a Dictionary and it compares the hashes of the words present in the Dictionary with the password hash. We can use any desired wordlist. John also comes in build with a password.lst which contains most of the common passwords. Mar 29, 2020. John.exe Cracking Passwords. John the Ripper’s primary modes to crack passwords are single crack mode, wordlist mode, and incremental. The single crack mode is the fastest and best mode if you have a full password file to crack. Wordlist mode compares the hash to a known list of potential password matches. Today, I'm gonna show you how to crack MD4, MD5, SHA1, and other hash types by using John The Ripper and Hashcat. John The Ripper: 'John the Ripper is a fast password cracker, currently available for many flavors of Unix, Windows, DOS, BeOS, and OpenVMS. Its primary purpose is to detect weak Unix passwords. To get setup we’ll need some password hashes and John the Ripper. Sample Password Hashes. A group called KoreLogic used to hold DEFCON competitions to see how well people could crack password hashes. Their contest files are still posted on their site and it offers a great sample set of hashes to begin with. Download the password hash file. 3 – Crack with John Now we are ready to crack the hashes. John can run in different modes. You can use wordlists or straight brute force. The method I will use in this example is wordlist mode since that is the most effective way.

John The Ripper Crack Sha1 Hashes 1

Step 1: Extract Hashes from Windows

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Security Account Manager (SAM) is a database file in Windows 10/8/7/XP that stores user passwords in encrypted form, which could be located in the following directory:

The first thing we need to do is grab the password hashes from the SAM file. Just download the freeware PwDump7 and unzip it on your local PC.

John The Ripper Crack Sha1 Hashes

Open a Command Prompt. Navigate to the folder where you extract the PwDump7 app, and then type the following command:
PwDump7.exe > d:hash.txt

Once you press Enter, PwDump7 will grab the password hashes from your current system and save it into the file d:hash.txt.

Step 2: Cracking Passwords with John the Ripper

John The Ripper Crack Sha1 Hashes Download

As you can see the password hashes are still unreadable, and we need to crack them using John the Ripper. John the Ripper is one of the most popular password cracking tools available that can run on Windows, Linux and Mac OS X.

Just download the Windows binaries of John the Ripper, and unzip it.

Open a Command Prompt and change into the directory where John the Ripper is located, then type:
john --format=LM d:hash.txt

It will start cracking your Windows password. In my example, you can clearly see that John the Ripper has cracked the password within matter of seconds.

John The Ripper Crack Sha1 Hashes List

Final Words

John The Ripper Crack Sha1

John the Ripper is probably the world’s best known password cracking tool. But its lack of a GUI interface makes a bit more challenging to use. Don’t use it for illegal purposes.

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