Here's what you need to get going.
Hardware.
Powerful computer. Suggest quad core 3GHz or better. Good Nvidia graphics card. PC tuner card to record transport stream. Dedicated Hard drive, 2TB is good.
Software.
CSA Rainbow Table tool by Colibri.
Start by making the chains (tables). This could take many weeks of non stop computer running. It's about 1.2TB file size. (Once you have your chains, the next time there is a key change, it will just take minutes to find the keys).
Then record your stream and begin the search.
I'm no expert, but since I lost my TV channels I started investigating.