How to crack EXE for MS-DOS?

Question

DOS

Hello! There is an EXE file for MS-DOS. There is a built-in command for checking the CRC code in one file. I tried to change the values ​​​​in this very file, but the CRC amount changes and the program does not start. There are about 256,000 variants of CRC amounts. In general, it is easier to grunt an EXE file than to recalculate the CRC sum, since I have no idea what algorithm this is all considered to be. I installed IDA, but I can't figure out the interface. So I'm looking for people who can strip the CRC check from an EXE file. Naturally, not for a simple thank you.

Answer 1

So I'm looking for people who can strip the CRC check from an EXE file. Naturally, not for a simple thank you.

Fine. For this there is - freelansim.ru