Removing GMStudio Professional identifiers?

Hello.

I am 16 years old, and can't get a credit card until two more years, so I couldn't buy Game Maker Studio even if I wanted.
A friend of mine gave me this pirate version of Game Maker Studio, and I done a plenty of work with it, some things rely on attached DLLs, and even some critical coding is done through AllocAsm.

Today I found that YoYo Games can detect if games are done with pirate versions, but by using free version I'd have to get rid of all installed external modules.

Surfing the web I got part of the file format for GM8, an older version (but can't put the link here according to forum system)
I'd like to remove or nullify specific spots (identifiers, internal checksums, whatever related), so their checks throw an "Error" mark instead of "Pirate".

Where can I find the EXE format for 1.1.785 version?
... or another alternative to not have issues with my game's release?
or if I can ask somewhere else as well, I'd like to know =)

it's seriously illegal to release a game with a pirated version, you can get charged with many things. I do NOT recommend doing that.
And, no. i don't think you can remove identifiers.