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#hackyou2014 Web400 write-up

I did not solve this level during the CTF, but found it so interesting reading Xelenonz write-up that I couldnt help trying it myself just for the fun and since this blog is my personal notes, I decided to write it here for future reference, but all credits go to Xelenonz. We are given the code of a Image hostig web app. Reading the code we see how it handle the requests: