Well since the bypass provides access to the debugger I decided to use it to my advantage. It was hard to find a pointer for the buy button hack that worked for everyone so I decided to attack it at the source, in the ASM. After I completed it I noticed that this hack also allows any button to be enabled, no matter what. This also means anything in the options menu that is normally disabled can now be enabled and changed (except Shadow Detail).
How to use:
First open MHS and attach to Engine.exe, before opening any lssave files. After you have MHS attached, you open the lssave file.
If you open the lssave file before you attach MHS to the game, it will erase any Auto-Assembly entries you have in the lssave, which becomes a pain in the ass if you forget about it and accidentally save over it (like I've done before). Just follow the steps in order and you should be fine.
Summary:
1. Open the game
2. Open MHS and attach to Engine.exe
3. Load lssave file(s) into MHS
4. Freeze/lock the buy/gift anything hack to enable all buttons
5. Enjoy!
Download:
http://www.sendspace.com/file/05ax4a