Just read the ELF specification. There is a header and everything else follows. There are a lot of explanations online, here is one: https://www.cs.cmu.edu/afs/

Just read the ELF specification. There is a header and everything else follows. There are a lot of explanations online, here is one: https://www.cs.cmu.edu/afs/cs/academic/class/15213-f00/docs/elf.pdf https://www.cs.cmu.edu/afs/cs/academic/class/15213-f00/docs/...