Here are my writeups for retired Hack The Box machines that I've solved before.
Hack The Box machines
Hack The Box Shocker Writeup
This is a writeup for the retired Hack The Box Shocker machine.
Hack The Box Valentine Writeup
This is a writeup for the retired Hack The Box Valentine machine.
Hack The Box Grandpa Writeup
This is a writeup for the retired Hack The Box Grandpa machine.
Hack The Box Jerry Writeup
This is a writeup for the retired Hack The Box Jerry machine.
Hack The Box Granny Writeup
This is a writeup for the retired Hack The Box Granny machine.
Hack The Box Legacy Writeup
This is a writeup for the retired Hack The Box Legacy machine.