September 19, 2018
CSAW Quals 2018 - RE 400 - Not Protobuf
I’m in this company’s network and I’ve MITM’d this weird protocol between a dev client and server, but I can’t figure out how it works. Connect to reversing.chal.csaw.io:9002 and I’ll send the client traffic to you. Forward it on to the dev server at reversing.chal.csaw.io:9001 to figure out what’s going on. Once you’re ready, hit up the prod server at reversing.chal.csaw.io:9000 which should have a flag for you.
Solved with jack2 and Plailect!
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