Infinite Zip.md

BCACTF 2.0 – Infinite Zip

• Category: Foren
• Points: 75
• Author: Vivian

Challenge

Here's a zip, there's a zip. Zip zip everywhere.

Solution

Open the zip file with 7zip and realize there are more zip files inside. Hold down Ctrl + PgDn for a while before extracting flag.png This is a false flag.
If we run strings flag.png or view the exif data we'll find the flag.