You still end up with executable code - i think the key thing is you get it to a form where you can't tell the difference between your function (after obfuscation) and any other function that gives the same output for same input (after obfuscation). So you could still try giving it every possible input, to figure out what it does, but if it takes at least a couple 64 bit integers you're going to be spending the rest of your life doing that.
You still end up with executable code - i think the key thing is you get it to a form where you can't tell the difference between your function (after obfuscation) and any other function that gives the same output for same input (after obfuscation). So you could still try giving it every possible input, to figure out what it does, but if it takes at least a couple 64 bit integers you're going to be spending the rest of your life doing that.