Perhaps the main attraction of using this tool is its ability to deploy rainbow tables while cracking the password.At this point, it is essential that you understand the importance of rainbow tables in a brute force attack.As you know, a hash is a one way function and cannot be reversed.
So we cant convert the password hashes back to their corresponding plaintext forms. For this reason, during a brute force attack, we take a potential passphrase (in plaintext) and convert it to its hash form. Then we can compare this hash with the password hash and if there is a match, we know that this plaintext is the passphrase. Basically, during a brute force attack, a lot of time and CPU power is wasted in computing the hashes. So once you have a rainbow table, all you need to do is compare the hash in the rainbow table to the password hash you have obtained during penetration testing. ![]() Heres an example where I cracked some LM Hashes I grabbed from a machine during penetration testing (the hashes were obtained by using pwdump in Meterpreter). You can load up any of these rainbow tables germane to the victims OS. Rainbow Tutorial Download Depending OnThey are large files and will take a while to download depending on your network bandwidth. Ophcrack can speed up the Windows password cracking process during penetration testing, and if you test Windows system frequently, it would be prudent to have these rainbow tables saved on your local disk. Related Driftnet Tutorial How to Sniff Images with Driftnet Arpspoof Ettercap Kali Linux Web Applications Authentication Brute Force Practical Demo Screenshots Brute Force Website Login How To DHCP DOS Attack with Yersinia in Kali Linux BackTrack How To How To Spoof DNS In Kali Linux How To Hack Wifi and Crack its Password Hacking Wifi WEP WPA Cite.
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