So, there's this pentest I want to try with my network. I tried bruteforce but it took days and nothing came up even. I believe Rainbow Tables are a convenient way to try and, as there are tables available on Ophcrack's website, that worked well before when I tried with Windows passwords, I wanted to give it a try to know if it's possible and easy to do. They come in .zip format and there is a folder and inside comes a bunch of files with different extensions. (.bin, .start.. etc.)
Have anyone tried that or do I in fact have to generate my own Rainbow Tables in order to test? If I do, please give me some directions (or a link) of how to do that on BackTrack or Kali. That should do the job.