Overwrite GOT Entry from Buffer Overlapping

Problem description First of all, the CTF is from pwnable.kr (problem name: passcode). The problem description is as follows:“Mommy told me to make a passcode based login system. My initial C code was compiled without any error! Well, there was some compiler warning, but who cares about that?”There is ssh to the problem server where you…

Intel Pin Tool

The most difficult part of doing research is prototyping. Especially when it’s about security, its a must one. A researcher has to prove the proposed system is legitimate. It’s true for both attack and defense. Researchers greatly depend on existing technology and software to implement their prototype. It cuts the development time to start from…