CPU Adventure – Unknown CPU Reversing
https://www.robertxiao.ca/hacking/dsctf-2019-cpu-adventure-unknown-cpu-reversing/ [www.robertxiao.ca]
2019-09-25 01:38
We reverse-engineered a program written for a completely custom, unknown CPU architecture, without any documentation for the CPU (no emulator, no ISA reference, nothing) in the span of ten hours.
source: HN