Should be rated for 20 points or something like that

For this challenge, I motivated myself to use ghidra for the first time.

Conclusion: the decompiler makes this easy. :)

for starters, after a bit of pratice on https://microcorruption.com/, you will crack this in a while ;-)

Took me 4 hours of using radare2/Cutter. Pretty simple if you know how basics of assembly and debuging simple code

I preffered retdec software and some programming logic ;)

Is there another way than brute force? i have searched and searched but found nothing of use. Can someone help me?

Really great challenge.