public byte[] GetPacket()
{
var finalPacket = new List<byte>();
finalPacket.AddRange(EncodeHelper.EncodeShort((short) (Payload.Count + 8), true)); // Packet length.
finalPacket.AddRange(EncodeHelper.CreatePadding(4)); // Unknown.
finalPacket.AddRange(EncodeHelper.EncodeShort(Header, true)); // Packet header.
finalPacket.AddRange(Payload);
return finalPacket.ToArray();
}
private void ReceiveCallback(IAsyncResult ar)
{
try
{
var byteCount = _socket.EndReceive(ar);
if (byteCount == 0)
{
_socket.Close();
_socket.Dispose();
Console.WriteLine($"Connection from {_remoteEndPoint.Address} was dropped.");
return;
}
var packet = new byte[byteCount];
Buffer.BlockCopy(_buffer, 0, packet, 0, byteCount);
/* Packet processor */
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine(BitConverter.ToString(packet));
Console.WriteLine(BitConverter.ToString(packet).Replace("-", ""));
var packetLength = EncodeHelper.DecodeShort(new[] { packet[1], packet[0] });
var packetHeader = EncodeHelper.DecodeShort(new[] { packet[3], packet[2] });
var command = EncodeHelper.DecodeShort(new[] { packet[7], packet[6] });
Console.WriteLine($"Packet Length [Short]: {packetLength}");
Console.WriteLine($"Packet ID [Short]: {packetHeader}");
Console.WriteLine($"Command [Short]: {command}");
Console.WriteLine($"Packet Raw: {Encoding.UTF8.GetString(packet)}");
/* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
* 10-00-11-00-04-00-01-00-01-00-00-00-E4-00-00-00
* | Length
* | ID
* |?
* | CMD
*
* Second Packet:
* CMD 7&8: Launcht het spel / gameguard update
*/
/* Packet responder */
var packetList = new List <byte>();
switch (command)
{
case 1:
/* Error example
* List<byte> packetList = new List<byte>();
* packetList.AddRange(Encoder.CreatePadding(6)); // pos 0,1,2,3,4,5 (6)
* packetList.AddRange(Encoder.EncodeShort(99).Reverse()); // COMMAND pos 6,7 (2)
* packetList.AddRange(Encoder.CreatePadding(4)); // pos 8,9,10,11 (4)
* packetList.AddRange(Encoder.EncodeInteger(1337).Reverse()); // pos 12,13,14,15 (5)
* packetList.AddRange(Encoding.Unicode.GetBytes("l33t")); // pos 16+ */
packetList.AddRange(EncodeHelper.CreatePadding(6));
packetList.AddRange(EncodeHelper.EncodeShort(2).Reverse());
packetList.AddRange(EncodeHelper.CreatePadding(8));
_socket.Send(packetList.ToArray());
break;
case 6:
packetList.AddRange(EncodeHelper.CreatePadding(6));
packetList.AddRange(EncodeHelper.EncodeShort(8).Reverse());
packetList.AddRange(EncodeHelper.CreatePadding(4));
_socket.Send(packetList.ToArray());
break;
}
/* Finalize */
Console.ResetColor();
Console.WriteLine("Received bytes: " + byteCount);
}
catch (Exception exception)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(exception.StackTrace);
Console.ResetColor();
}
finally
{
WaitForData();
}
}