http://www.muppetlabs.com/~breadbox/software/tiny/teensy.html
http://virus.enemy.org/virus-writing-HOWTO/_html/i386-redhat8.0-linux/language.of.evil.html
http://timelessname.com/elfbin/
https://chris.bracken.jp/2018/10/decoding-an-elf-binary/
http://archive.main.lv/writeup/create_elf_file_from_scratch.html
https://www.cs.kent.ac.uk/people/staff/srk21/blog/devel/