Itemtype decryptors still work just fine. Search datcryptor.
There is no public server.dat encryptors out there right now. You're better off just using a loader to modify where you are connecting to at this time.
Actually the only ips in server.dat I seem to remember are the AUTH ip (look in my proxy I uploaded). You can read the actual GAME SERVER ip from the auth response packet you receive when logging in (also, easy to find using my proxy framework)
