finding aspack routine

Hi, Im a newbie to this, but Im very interested and want to learn.

Im trying to make a patch for a program that is aspacked - that will jmp to my code from the end of the unpacking routine when the app is run.

I don't know where to start, and could only find some very outdated tutorials that don't outline this area (and the tutorials here - which I can't download yet!).


How do I go about finding the end of the unpacking routine?


(I have ollydbg, but im sure I can 'find' softIce somewhere if needed!)

I have messed around a little making one or two trainers for games, but this side of it is completely new to me.

Sorry if this post is a bit too newbie! (most questions here seem to be rather more.. precise/accurate? (not sure of the word) )