This is part 4 of a 4 part series exploring the structure of the Mach-O file format. Here are links to part 1, part 2, and part 3. When we started this series we didn’t know anything about Mach-O other than some vague idea that it’s a binary file format used by macOS. By now, we have a much better understanding of how Mach-O is laid out and how the operating system uses the information in a Mach-O file to run a program.
