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Challenge pkt300 – DEFCON 16 explained


This challenge was given at DEFCON 16 and was a bit tricky I must say. I took approximately three hours to do it but it was mainly due to the fact that I was unable to find the good .pem file directly. The google dork given as hint sent a few results back in 2008, but now, there are hundreds of results! I went in circle asking what did I do wrong, and finally I decided to look for and try more keys. I finally found the good one on this site.

With this key I was able to decipher the messages. Here’s the method:

http://www.burningnode.com/images/2013/06/explained-pkt300-defcon16.pdf

I always appreciate to work on these topics, as they make me learn new things and/or keep my knowledge up to date.

Thanks Luc.

Challenge files here

Challenge from one hour to the next in 2008 (Spanish)