https://xcellerator.github.io/tags/rootkit/
https://reveng007.github.io/blog/2022/03/08/reveng_rkit_detailed.html
LKM
http://www.ouah.org/LKM_HACKING.html
HOOKING
http://jbremer.org/x86-api-hooking-demystified/#ah-abstract
https://www.codeproject.com/Articles/1273948/Hooking-Linux-Kernel-Functions-Part-1-Looking-for
LKM - Hide files/procs:
https://jm33.me/linux-rootkit-for-fun-and-profit-0x02-lkm-hide-filesprocs.html