Fooling Parsers: Achieving Code Execution Using echo Command — Google CTF 2024 Writeup
Google releases some really cool CTF challenges every year. This year was no exception. onlyecho was one of the relatively easier ones, but it ended up being a lot of fun to solve. I was intrigued by the challenge and decided to dive right in. This was the challenge description: I like echo because my friends told me it’s safe. I made a shell that only allows you to run echo, how cool is that?...