--- layout: post title: PicoCTF - Wave a flag date: '2022-10-12 10:37:00 +0800' categories: [CTF, PicoCTF] tags: [ctf,picoctf] author: devoalda math: true libraries: - mathjax math: true --- # Description Can you invoke help flags for a tool or binary? [This program](https://mercury.picoctf.net/static/1b1b6b2b4b3b4b3b4b3b4b3b4b3b4b3b/warm) has extraordinarily helpful information... # Process ![Wave a flag](/assets/img/WaveAFlag.png){: width="972" height="589" } _Hex Editor in VSCode_ The flag is found in the file, but it is not in plain sight. Using a hex editor, the flag can be found. The word binary triggered me to use some sort of hex editor to view the file. I used VSCode to view the file, and found the flag. # Flag ``` picoCTF{b1scu1ts_4nd_gr4vy_6635aa47} ``` {: file="flag.txt" }