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main.py
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import socket
import time
import threading
from binascii import hexlify, unhexlify
from Crypto.Cipher import AES
import hashlib
#note: server information subject to change. make sure to verify these values
LOGIN_IP = "158.69.121.176"
LOGIN_PORT = 3724
GAME_IP = "147.135.9.203"
GAME_PORT = 7034
class Client:
def __init__(self,
username,
password,
login_ip=LOGIN_IP,
login_port = LOGIN_PORT,
game_ip = GAME_IP,
game_port = GAME_PORT):
self.username = username
self.password = password
#game variables
self.penguin_id = None
self.login_ip = login_ip
self.login_port = login_port
self.login_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.game_ip = game_ip
self.game_port = game_port
self.game_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.magic = "a1ebe00441f5aecb185d0ec178ca2305Y(02.>\'H}t\":E1_root"
self.verchk_msg = "<msg t='sys'><body action='verChk' r='0'><ver v='153' /></body></msg>"
self.rndk_msg = "<msg t='sys'><body action='rndK' r='-1'></body></msg>"
self.login_msg = '<msg t="sys"><body action="login" r="0"><login z="w1"><nick><![CDATA['+self.username+']]></nick><pword><![CDATA[{}]]></pword></login></body></msg>'
self.key = None
self.rndk = None
self.login_key = None
self.user_packet = None
self.user_packet2 = None
def _send(self,sock,payload,encrypted=True):
if(encrypted):
payload = hexlify(AES.new(self.key, AES.MODE_ECB).encrypt(self._pkcs7_pad(payload,16))).decode('utf-8')
else:
payload += chr(0)
sock.send(payload.encode())
##CRYPTO HELPERS
def _pkcs7_pad(self,data, block_size):
padding_length = block_size - len(data) % block_size
return data + chr(padding_length) * padding_length
def _AESdecrypt(self,msg):
msg = msg.replace(b'\x00',b'')
barr = bytearray(msg)
return AES.new(self.key,AES.MODE_ECB).decrypt(unhexlify(bytes(barr)))
def encryptPassword(self,password):
_hashed = hashlib.md5(password.encode())
_hashed = _hashed.hexdigest()
return _hashed[16:32] + _hashed[:16]
##CMD INTERPRETER
##LOGIN HANDSHAKE
def extract_rndk(self,msg):
return msg[msg.find("<k>")+3:msg.find("</k>")]
def login(self):
print("[CLIENT] connecting to login server")
self.login_socket.connect((self.login_ip, self.login_port))
#request AES encryption key
self._send(self.login_socket, self.verchk_msg, encrypted=False)
self.key = self.login_socket.recv(1024).decode('utf-8').split("#")[2]
#request hash key
self._send(self.login_socket, self.rndk_msg)
encrypted_reply = self.login_socket.recv(1024)
self.rndk = (self.extract_rndk(self._AESdecrypt(encrypted_reply).decode('utf-8')))
#send login request
loc1 = self.encryptPassword(self.password).upper()
loc1 = loc1 + self.rndk
loc1 = loc1 + self.magic
loc1 = self.encryptPassword(loc1)
self._send(self.login_socket,self.login_msg.format(loc1))
print("[CLIENT] sending login request")
buf = b""
finished_recv = False
while (not finished_recv):
buf += self.login_socket.recv(1024)
delim = buf.find(b'\x00')
init_resp = ""
while delim!=-1:
cmd = self._AESdecrypt(buf[:delim]).decode('utf-8')
#cmd.split("%")[2]
#if "gs" then server list
#if "gbos" (unknown)
#if "gbl" then player uuid
#if "l" then player information for login
if(cmd.split("%")[2]=="l"):
init_resp = cmd
finished_recv=True
buf = buf[delim+1:]
delim = buf.find(b'\x00')
userInfo = init_resp[init_resp.find("%xt%l%-1%")+9:].split("|")
self.penguin_id = userInfo[0]
self.login_key = userInfo[3]
self.user_packet = init_resp[init_resp.find("%xt%l%-1%")+9:].split("%")[0]
self.user_packet2 = init_resp[init_resp.find("%xt%l%-1%")+9:].split("%")[1]
##GAME HANDSHAKE
def join_world(self,roomID = "100"):
print("[CLIENT] connecting to game server")
self.game_socket.connect((self.game_ip,self.game_port))
#send vercheck
self._send(self.game_socket, self.verchk_msg,False)
#request random key
self._send(self.game_socket, self.rndk_msg,False)
buf = b""
while 1:
buf = buf + self.game_socket.recv(4096)
delim = buf.find(b'\x00')
while delim!=-1:
cmd = buf[:delim].decode('utf-8')
#use cmd to interpret individual commands from CPOnline servers
print("[CPOnline] " + cmd)
if ("rndK" in cmd):
self.rndk = self.extract_rndk(cmd)
print("[CLIENT] joining world")
#send login request to the game
login_code = self.encryptPassword(self.login_key + self.rndk) + self.login_key
payload = "<msg t='sys'><body action='login' r='0'><login z='w1'><nick><![CDATA[{}]]></nick><pword><![CDATA[{}]]></pword></login></body></msg>"
payload = payload.format(self.user_packet, login_code + "#" + self.user_packet2)
self._send(self.game_socket, payload ,False)
cmd = self.game_socket.recv(4096)
pa = "%xt%s%j#js%-1%{}%{}%en%".format(self.penguin_id,self.login_key)
self._send(self.game_socket,pa,False)
print("[CLIENT] success, connected to the game!\n\n")
time.sleep(2)
# finish handshake
buf = buf[delim+1:]
delim = buf.find(b'\x00')
client = Client(username="username",password="password")
client.login()
client.join_world()