001:
The first crack:
There are two login methods: serial number/name and serial number, observe the error message
Two error messages, direct Chinese search characters:
The first login method error is: sorry,xx
Right-click Chinese character search, ctrl+f enter the character to be searched, here I find two
The comparison code should be as follows, or you can set breakpoints to see where to stop. After trying it, the following error is reported.
The error window is from 0042FB1F, here is one from 0042FB03, ctrl+G search
It can be seen that this is a JNZ jump, jump when equal
You can directly brute force and fill the JNZ line with NOP. Right-click Copy to Executable and select All.
The crack was successful.