Obfuscating C-based binaries to avoid decompilation

Question

Is there some way to obfuscate C-based executables or libraries to prevent decompilation?

Answer 1

I think if you speak about compiled binary there is not much you can do, (perhaps only apply UPX or related tool) which does not make a lot of sence since it can be reversed.

If you talk about writing new code, try Self Modyfing C Code which will probably be the hardest way to re engineer your application.