Samy Kamkar (creator of the Samy worm) has an awesome video on his program, Skyjack: Autonomous Drone Hacking.
Here is Samy’s page on how to perform a skyjack attack. He lists the entire inventory with Amazon links to hardware so you can support his efforts on advancements toward fighting robots when they become self-aware (the singularity) and try to eliminate humans. ;)
Samy is a genius, read the entry on Wikipedia about him.