How to protect hacker modify jump location ?

[Boki Digtal]

Hi All,

After we did a lot of copy-protection code in program, I think hacker
can still use ICE to trace where it jumps to and then modify the
target location (address).

Finally, what we can do is the same as car, we can only do more to
protect more, nothing can absolutely solve this issue.

And this is why Microsoft loss so much revenue, my original thinking
is - in order to grow up the market, we have to allow something
underground first, right ?

Best regards,
Boki.

 

[Jon Skeet [C# MVP]]

After we did a lot of copy-protection code in program, I think hacker
can still use ICE to trace where it jumps to and then modify the
target location (address).

Finally, what we can do is the same as car, we can only do more to
protect more, nothing can absolutely solve this issue.

And this is why Microsoft loss so much revenue, my original thinking
is - in order to grow up the market, we have to allow something
underground first, right ?

You'll never get "perfect" protection - if the client's computer has
to be able to run your code, it *will* be hackable. Once you
understand that, it's a cost/benefit analysis - how much effort do you
want to put in vs how many sales you'll lose.

I tend to believe that it's not worth spending a lot of time on this.
Perhaps obfuscate, but that's about it.

Jon