Lol....are you actually offering those services or just posting a hypothetical scenario for whatever reason?  If you've found a way to do the above, then my guess would be that you've found a serious bug that might be of interest to Theymos.  I'm not a programmer or hacker, so I never was interested in that bug bounty (or paid much attention to what it was all about), but it sounds like something you might profit from rather than doing those scummy things.

I'd be very interested to see if OP is able to do what he's apparently claiming he can do.  I don't know if he's just blowing smoke or what.