how to get to know what crypto been used

i was working on a proxy for some game and it's pretty new, packets are encrypted, how to figure out what crypto they are using and it's keys if there is any ?
as far as i know, people reverse the client and search for crypto signatures or snippits (which can be done through a scanner), then search for keys if there is any, then trail and error
is that right ? is there certain api at c++ for crypting ? is it possible to get a clue from the including dlls to be known crypting dlls ?

please i would love to have more information, my reversing skills isn't as good to get to that on my own, all i need is just some tips also guiding to push into it

thanks for reading

Why worry about ciphers? Just hook the recv and send methods in the client before the packets are encrypted / after the packets are decrypted. Done deal (most private servers won't check for that). :awesome:

Quote:

Originally Posted by Fang Why worry about ciphers? Just hook the recv and send methods in the client before the packets are encrypted / after the packets are decrypted. Done deal (most private servers won't check for that). :awesome:

it's a new online game and not a conquer private server :), plus i keep getting banned for changing flags at the clients and values, they having anti attaching techniques , anti break points, really not that easy for me to get my way through it with re
so far i've had a loader, and a really simple c++ app to change some flags , patching some checks, but i still can't do anything serious
that's why i really want to figure out the crypto and use mitm proxy