Sunnysideup.7z (LATEST)

: Search for "CTF writeups 2025" to see if a participant has uploaded their solution scripts. Haruulzangi U18 2025 Domestic Quals - CTFtime

: Use 7z l -slt sunnysideup.7z to view extended metadata. Sometimes clues are hidden in the "Comment" field or file modification dates. sunnysideup.7z

: Search for "Haruul Zangi" or "SunnySideUp" under the 2025 event archives. : Search for "CTF writeups 2025" to see

: After extraction, files inside might contain hidden data. Common checks include: Looking for hidden strings using the strings command. sunnysideup.7z

Checking images for or hidden zip files within images ( binwalk ). Potential Sources for the Write-up

: If you have one of the files from inside the archive elsewhere, you can sometimes use it to recover the key.