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.
Rules: Lets you define the rules for using wordlists. Idon't use wordlists, so if you want to use this option Iincremental: I like this method. It allows you to do a bruteforce attackunder certain modes.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)external: This is a little complicated, so if you are lamedon't mess with it.
Basically this calls the options that are defined inthe configuration settings. You can change these yourself, but Iwouldn't recommend it unless you know what you're doing. No, I wont tellyou how, go away.Usage: john -external:MODE crackme.txt (replace MODE with whatever thename of your mode is). Session: Use this if you know that you will have to stopJTR in the middle of a crack. It allows you to create a new file thatholds the data of your session.
You can then restore your session later. How to use a wordlist with JTR: I'll assume you already have awordlist in the JTR directory (it comes with password.lst, if you wantto make your own I'll tell you how later). Go to the prompt and type'john -wordfile:password.lst crackme.txt' (no quotes, damnit). If thepassword is in the wordlist, it will work.
Otherwise, you deserve it forusing a wordlist when you have bruteforce capabilities, shame on you.How to create a wordlist to use with JTR: First I will include a few lines of the wordlist supplied with JTR:#!comment: Common passwords, compiled by Solar Designer.12345abc123passwordpasswd123456.