Executable encryption check anti piracy measure

Question

I read a very interesting blog about implementing some anti-piracy protection into your apps. Some of them dont work anymore, some of them do. The 2 ones that still are effe

Answer 1

This code won't work successfully on a 64-bit device like the iPhone 5s. The header has been changed from mach_header to mach_header_64 and the command ID is now LC_ENCRYPTION_INFO_64.

What I did was to read the header and then see what the magic number was. If it's MH_MAGIC_64 then you're on a 64-bit device and you need to use the mach_header_64 struct and look for LC_ENCRYPTION_INFO_64 (defined as 0x2C) instead of LC_ENCRYPTION_INFO.