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File 101

All started with an image

The challenge gives an image to start with. Searching in it we found a trailing string that was a link to a file in dropbox.

A protected zip file

The file we got from that dropbox link is a protected zip. After a while we decided to throw John the ripper with the Rockyou dictionary and it worked! Now we have a corrupted file, let's continue.

Fixing things up

Looking at the file magic bits we can see that is probably a jpeg image. Fixing the header allow us to open the image and get the flag: