Windows malware based challenge. Implemented exception handler mechanism two stages with an added pain of CPP code wrapped around classes.

This is my write up on hell86 crackme from crackmes.one authored by ttlhacker. This was a wonderful crackme that I enjoyed doing. I implemented a debugger in C and also emulated it to get its execution trace as well.

This is a challenge which I solved by instrumenting the binary with the help of intel pintools. This is an alternative way to solve this challenge by using a black box approach.

This was a custom VM based crackme from 3kctf 2021. The VM has simple opcodes and control flow.

This was a nice challenge which dealt with patching the windows binary.