[DavidBuchanan]

Here's my writeup/solution for the same challenge, represented as a diagram:

https://twitter.com/David3141593/status/1253122980525334529

[mayankkaizen]

Your pinned tweet is quite fascinating.

[pgo]

Cool diagram. Putting the shellcode in headers is very innovative. I didn't have too much assembly knowledge to trim it further during the competition.