SolvedModern Warfare 3 Network Protocol

MW3, like Black Ops uses 3DES encryption to protect the plain text, find the keys inside the exe and you can decrypt the game protocol.

And no, Wireshark doesn't know MW3 protocol, because no one would waste valuable time on this game.

AFAIK everything is encrypted (makes sense to be so), but i haven't checked the whole communication. Just get the keys and you'll be able to decrypt the captured traffic with Wireshark.