Cracking Windows password
You can also perform a rainblow attack by using the open source tool ophcrack. Perform the following steps on any Windows version:
1. Firstly, download the source file from http://ophcrack.sourceforge.net.
2. Extract and install the program by entering the following command.
3. Load the program.
4. Click the Load button and select the type of test you wish to run. For example , I’m connecting to a remote server called test1. This way, ophcrack will authenticate to the remote server using my locally logged-in username and run pwdump code to extract the password hashes from the server’s SAM database. You can also load hashes from the local machine or from hashes extracted during a previous pwdump session.
5. Click the Launch icon to begin the rainbow crack process. The process can take a little while depending on your computer’s speed. Three of the long, random passwords I created for my test accounts were cracked in just a couple of minutes. ophcrack has other options that will test for extended characters, so no worries for more “creative” passwords.
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