CTF: Hackvent 2015
Link to challenge: http://hackvent.hacking-lab.com
Date Completed: 08 December 2015
Link to challenge: http://hackvent.hacking-lab.com
Date Completed: 08 December 2015
Challenge
You are given the following file:
Download PDF File
Solution
So we open the PDF file to find 1 QR image in a ball. We scan it and we get the text Oooops ! .
We then use an online tool to extract all images from the PDF (link). I do this because PDF files store all image files, even if they are completely overlapped by other images.
We then find 3 different images:
As it turns out, the QR image square was overlapping the other QR image in the ball. So we simply scan the QR image in the ball and get the flag.
Flag: HV15-bkPb-tPEM-Fh3n-wvOi-5ZgD
