I am checking against hashes which are made by the worldserver application.
I've managed to get hash for battlenet_accounts with following function
strtoupper(bin2hex(strrev(hex2bin(strtoupper(hash("sha256",strtoupper(hash("sha256", strtoupper($username)).":".strtoupper($password))))))));
Now i have some thoughts about the account table... Will share if i will succeed