Yep, but the beauty is that the Cash Hack self-validates - you cant take more than the player has, and by editing the special power code for your supply center you can specify the max amount to take (say $1000)
EDIT: Thought - if you edited the code so you TOOK a NEGATIVE amount, youd actually GIVE them cash. You could then tweak the code to deduct that same amount from you when you use the special power
