You have a binary license_check.exe that displays "Invalid License" when a wrong key is entered.
When you load the software in a debugger, the assembly code looks like gibberish – only PUSHAD and POPAD commands. cracking software practicals csp verified
A software requires a key in the format AAAA-BBBB-CCCC . The validation function converts each letter into a number, sums them, and checks if the result equals 0x7A2 . You have a binary license_check