Tags: elixir 

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We're working on a brand new sort of encrypted version of Whatsapp, we call it Whysapp. We took the base technology behind Whatsapp and upgraded it to use a super shiny new language.

Original writeup (https://gitlab.com/ulisse_lab/ctf-writeups/-/blob/master/FBCTF2019_writeups/Whysapp/README.pdf).