Here is a file with another file hidden inside it. Can you extract it? https://mega.nz/#!qbpUTYiK!-deNdQJxsQS8bTSMxeUOtpEclCI-zpK7tbJiKV0tXYY
The file downloaded from the above link is a jpeg image named PurpleThing.jpeg
binwalk is a tool for searching binary images for embedded files and executable code.
The command binwalk -D=‘.*’ PurpleThing.jpeg will extract all file types that binwalk is able to identify
Using the file utility we can find out more about the extracted files, we have 2 PNG images, an empty file and a zlib compressed data file
Let’s inspect the images in the file explorer
The file 0 is the same image as PurpleThing.jpeg
25795 contains the flag we are looking for, Voila!
