View Full Version : Anti Loader Mechanism

July 5th, 2001, 22:21
Ok, finally I make a loader work under
both win2k and win98 to patch a ASProtect 1.2x protected app.
But I have a big question, when I use
WriteProcessMemory too early, it says
Protect Error .15 etc. But I got to work
aorund this problem.

Could anyone tell me something, how is such
action being detected by ASProtect? Any
hint about it?

I try to search forum, but you can search
only msg within 30 days, It really not

July 6th, 2001, 00:24
I'd say some sort of CRC mechanism is at work...I've seen such loops in ASPR layers, so just be sure to patch right before return to OEP.


July 7th, 2001, 04:39
Yes, I know that CRC check. I have found
out the part of CRC check in 1.2x.
But about the anti loader mechanism I really
want to know something about it.