: If the archive is password-protected, look at the filename. In some CTFs (like CodeBattle ), the password is the Base64-decoded version of the filename or a string found in the file metadata.
If "11-20" implies a range, this file likely contains 12.7z , which contains 13.7z , all the way to 20.7z or flag.txt . 11-20.7z
: Right-click, extract, repeat. This is inefficient for 10+ layers. : If the archive is password-protected, look at the filename
: Check the archive's "Comment" section; flags are often hidden there to reward those who don't just "Extract All". Step 5: Final Flag Submission : Right-click, extract, repeat
: Extract the hidden flag from a series of nested or obfuscated archives. Step 1: Initial Reconnaissance
: The content might be XORed with a static key (e.g., FlareOn2024 ).
Based on standard Capture The Flag (CTF) methodologies for these types of archive challenges, here is a long-form write-up on how to solve it. File Name : 11-20.7z Category : Forensics / Misc