In most CTF iterations of gt00.7z , the challenge falls into one of two categories:
Running file gt00.7z confirms it is a 7-zip archive data. gt00.7z
The password is short or based on the file name (e.g., "gt00", "GT00", or "password"). In most CTF iterations of gt00
strings gt00.7z | head -n 20 might reveal metadata or hints left by the creator. In most CTF iterations of gt00.7z
Check the file for any trailing hidden data using binwalk -e . Conclusion
The first step is to verify the file type and check for "low-hanging fruit" like embedded strings.