My hackthebox.eu rank is falling like a rock because I don’t have much time to spend. To remember better days I post my former rank banner which I saved before probably knowing what happens later on 😉
I was in the top 200! If you don’t know hackthebox head over to their website and enjoy hacking server and solving challenges like stego, reversing, forensic and others: https://www.hackthebox.eu/
When I got some free time I try to solve some beginners hacker ctfs. Recently I stumbled over cmd2 at Pwnable.kr and it took me some time to solve it. Later I realized that my earlier attempts would have been successful if I knew the difference between calling arguments with "..." or '...'. 🙂
For starters, when calling a binary with "$(...)" the code inside $(…) will be executed first and then the result will be the arg for the binary.
When a binary is called with '$(...)' the whole parameter will be seen as argument. With some help from youtube I used the following solution for cmd2: