As far as I've found only http communication without username/pass works. If the username and password are send in the plaintext you could try to capture the ethernet frames with wireshark and look at the data section and try to build the exact same frames and send them. It might contain things like ip and hash, so make sure you try to build correct frames.

Edit: I just saw the data under your links, the username and password are part of the link. Try using urlencode or 
@ = %40
: = %3A
+ = %2B