Provide those details so I can narrow down the solution.
If the file is password-protected, common CTF tactics include:
Extract the hidden flag from a potentially password-protected or obfuscated zip archive. Difficulty: Intermediate (estimated) 1. Initial Enumeration
zip2john Vampyr.zip > hash.txt john --wordlist=/path/to/rockyou.txt hash.txt Use code with caution. Copied to clipboard If the ZIP is "corrupted" or won't open:
Use the file command to confirm it is a true ZIP archive and not a renamed file. file Vampyr.zip Use code with caution. Copied to clipboard
Check for hidden files or interesting naming conventions. unzip -l Vampyr.zip Use code with caution. Copied to clipboard
Since there isn't a specific well-known CTF or cybersecurity challenge titled "Vampyr.zip" with a public write-up, this write-up follows a standard or Capture The Flag (CTF) methodology to help you solve it. Challenge Overview File: Vampyr.zip
If you have an unencrypted version of one file inside the zip, use bkcrack to recover the internal keys and decrypt the rest.