public static void DecryptPacket(Socket socket, ServerState state, byte[] packet)
{
var messageId = BitConverter.ToInt32(new byte[2].Concat(packet.Take(2)).Reverse().ToArray(), 0);
var payloadLength = BitConverter.ToInt32(new byte[1].Concat(packet.Skip(2).Take(3)).Reverse().ToArray(), 0);
var unknown = BitConverter.ToInt32(new byte[2].Concat(packet.Skip(2).Skip(3).Take(2)).Reverse().ToArray(), 0);
var cipherText = packet.Skip(2).Skip(3).Skip(2).ToArray();
byte[] plainText;
if (messageId == 10100)
{
plainText = cipherText;
}
else if (messageId == 10101)
{
state.clientKey = cipherText.Take(32).ToArray();
var nonce = GenericHash.Hash(state.clientKey.Concat(state.serverKey.PublicKey).ToArray(), null, 24);
cipherText = cipherText.Skip(32).ToArray();
plainText = PublicKeyBox.Open(cipherText, nonce, state.serverKey.PrivateKey, state.clientKey);
state.sessionKey = plainText.Take(24).ToArray();
state.clientState.nonce = plainText.Skip(24).Take(24).ToArray();
plainText = plainText.Skip(24).Skip(24).ToArray();
}
else
{
state.clientState.nonce = Utilities.Increment(Utilities.Increment(state.clientState.nonce));
plainText = SecretBox.Open(new byte[16].Concat(cipherText).ToArray(), state.clientState.nonce,
state.sharedKey);
}
Console.WriteLine("[UCR] {0}" + Environment.NewLine + "{1}", PacketInfos.GetPacketName(messageId),
Utilities.BinaryToHex(packet.Take(7).ToArray()) + Utilities.BinaryToHex(plainText));
ClientCrypto.EncryptPacket(state.clientState.socket, state.clientState, messageId, unknown, plainText);
}
public static void receive(int bytesReceived, Socket socket, State state)
{
int bytesRead = 0;
int payloadLength, bytesAvailable, bytesNeeded;
while (bytesRead < bytesReceived)
{
bytesAvailable = bytesReceived - bytesRead;
if (bytesReceived > 0)
{
if (state.packet.Length >= 7)
{
payloadLength = BitConverter.ToInt32(new byte[1].Concat(state.packet.Skip(2).Take(3)).Reverse().ToArray(), 0);
bytesNeeded = payloadLength - (state.packet.Length - 7);
if (bytesAvailable >= bytesNeeded)
{
state.packet = state.packet.Concat(state.buffer.Skip(bytesRead).Take(bytesNeeded)).ToArray();
bytesRead += bytesNeeded;
bytesAvailable -= bytesNeeded;
if (state.GetType() == typeof(ClientState))
{
ClientCrypto.DecryptPacket(socket, (ClientState)state, state.packet);
}
else if (state.GetType() == typeof(ServerState))
{
ServerCrypto.DecryptPacket(socket, (ServerState)state, state.packet);
}
state.packet = new byte[0];
}
else
{
state.packet = state.packet.Concat(state.buffer.Skip(bytesRead).Take(bytesAvailable)).ToArray();
bytesRead = bytesReceived;
bytesAvailable = 0;
}
}
else if (bytesAvailable >= 7)
{
state.packet = state.packet.Concat(state.buffer.Skip(bytesRead).Take(7)).ToArray();
bytesRead += 7;
bytesAvailable -= 7;
}
else
{
state.packet = state.packet.Concat(state.buffer.Skip(bytesRead).Take(bytesAvailable)).ToArray();
bytesRead = bytesReceived;
bytesAvailable = 0;
}
}
}
}
public static void DecryptPacket(Socket socket, ServerState state, byte[] packet)
{
int messageId = BitConverter.ToInt32(new byte[2].Concat(packet.Take(2)).Reverse().ToArray(), 0);
int payloadLength = BitConverter.ToInt32(new byte[1].Concat(packet.Skip(2).Take(3)).Reverse().ToArray(), 0);
int unknown = BitConverter.ToInt32(new byte[2].Concat(packet.Skip(2).Skip(3).Take(2)).Reverse().ToArray(), 0);
byte[] cipherText = packet.Skip(2).Skip(3).Skip(2).ToArray();
byte[] plainText;
if (messageId == 10100)
{
plainText = cipherText;
}
else if (messageId == 10101)
{
state.clientKey = cipherText.Take(32).ToArray();
byte[] nonce = GenericHash.Hash(state.clientKey.Concat(state.serverKey.PublicKey).ToArray(), null, 24);
cipherText = cipherText.Skip(32).ToArray();
plainText = PublicKeyBox.Open(cipherText, nonce, state.serverKey.PrivateKey, state.clientKey);
state.sessionKey = plainText.Take(24).ToArray();
state.clientState.nonce = plainText.Skip(24).Take(24).ToArray();
plainText = plainText.Skip(24).Skip(24).ToArray();
}
else
{
state.clientState.nonce = Utilities.Increment(Utilities.Increment(state.clientState.nonce));
plainText = SecretBox.Open(new byte[16].Concat(cipherText).ToArray(), state.clientState.nonce, state.sharedKey);
}
if (messageId == 14102)
{
using (PacketReader _Reader = new PacketReader(new MemoryStream(plainText)))
{
_Reader.ReadInt32();
_Reader.ReadInt32();
int Count = _Reader.ReadInt32();
byte[] Commands = _Reader.ReadBytes((int)(_Reader.BaseStream.Length - _Reader.BaseStream.Position));
using (PacketReader _Reader2 = new PacketReader(new MemoryStream(Commands)))
{
int CommandID = _Reader2.ReadInt32();
for (int i = 0; i < Count; i++)
{
if (Count > -1 && CommandID > 0)
{
Console.ForegroundColor = ConsoleColor.Cyan;
Console.Write("[COC]");
Console.ForegroundColor = ConsoleColor.Magenta;
Console.Write("[ COMMAND ]");
Console.ResetColor();
Console.WriteLine(" {0}", CommandInfos.GetPacketName(CommandID));
}
}
}
}
ClientCrypto.EncryptPacket(state.clientState.socket, state.clientState, messageId, unknown, plainText);
}
else
{
Console.ForegroundColor = ConsoleColor.Cyan;
Console.Write("[COC]");
Console.ForegroundColor = ConsoleColor.Magenta;
Console.Write("[CLIENT_PACKET]");
Console.ResetColor();
Console.WriteLine(" {0}", PacketInfos.GetPacketName(messageId));
string packetid = PacketInfos.GetPacketName(messageId);
string path = "Packets/" + packetid + ".txt";
using (StreamWriter sw = new StreamWriter(path, true))
{
sw.WriteLine();
sw.WriteLine(Utilities.BinaryToHex(plainText).ToUpper());
}
ClientCrypto.EncryptPacket(state.clientState.socket, state.clientState, messageId, unknown, plainText);
}
}
public static void DecryptPacket(Socket socket, ServerState state, byte[] packet)
{
var messageId = BitConverter.ToInt32(new byte[2].Concat(packet.Take(2)).Reverse().ToArray(), 0);
var payloadLength = BitConverter.ToInt32(new byte[1].Concat(packet.Skip(2).Take(3)).Reverse().ToArray(), 0);
var unknown = BitConverter.ToInt32(new byte[2].Concat(packet.Skip(2).Skip(3).Take(2)).Reverse().ToArray(), 0);
var cipherText = packet.Skip(2).Skip(3).Skip(2).ToArray();
byte[] plainText;
if (messageId == 10100)
{
plainText = cipherText;
}
else if (messageId == 10101)
{
state.clientKey = cipherText.Take(32).ToArray();
var nonce = GenericHash.Hash(state.clientKey.Concat(state.serverKey.PublicKey).ToArray(), null, 24);
cipherText = cipherText.Skip(32).ToArray();
plainText = PublicKeyBox.Open(cipherText, nonce, state.serverKey.PrivateKey, state.clientKey);
state.sessionKey = plainText.Take(24).ToArray();
state.clientState.nonce = plainText.Skip(24).Take(24).ToArray();
plainText = plainText.Skip(24).Skip(24).ToArray();
using (var reader = new PacketReader(new MemoryStream(plainText)))
{
Console.WriteLine("User ID -> " + reader.ReadInt64());
Console.WriteLine("User Token -> " + reader.ReadString());
Console.WriteLine("Major Version -> " + reader.ReadInt32());
Console.WriteLine("Content Version -> " + reader.ReadInt32());
Console.WriteLine("Minor Version -> " + reader.ReadInt32());
Console.WriteLine("MasterHash -> " + reader.ReadString());
Console.WriteLine("Unknown1 -> " + reader.ReadString());
Console.WriteLine("OpenUDID -> " + reader.ReadString());
Console.WriteLine("MacAddress -> " + reader.ReadString());
Console.WriteLine("DeviceModel -> " + reader.ReadString());
Console.WriteLine("LocaleKey -> " + reader.ReadInt32());
Console.WriteLine("Language -> " + reader.ReadString());
Console.WriteLine("AdvertisingGUID -> " + reader.ReadString());
Console.WriteLine("OSVersion -> " + reader.ReadString());
Console.WriteLine("Unknown2 -> " + reader.ReadByte());
Console.WriteLine("Unknown3 -> " + reader.ReadString());
Console.WriteLine("AndroidDeviceID -> " + reader.ReadString());
Console.WriteLine("FacebookDistributionID -> " + reader.ReadString());
Console.WriteLine("IsAdvertisingTrackingEnabled -> " + reader.ReadBoolean());
Console.WriteLine("VendorGUID -> " + reader.ReadString());
Console.WriteLine("Seed -> " + reader.ReadInt32());
Console.WriteLine("Unknown4 -> " + reader.ReadByte());
Console.WriteLine("Unknown5 -> " + reader.ReadString());
Console.WriteLine("Unknown6 -> " + reader.ReadString());
Console.WriteLine("ClientVersion -> " + reader.ReadString());
}
}
else
{
state.clientState.nonce = Utilities.Increment(Utilities.Increment(state.clientState.nonce));
plainText = SecretBox.Open(new byte[16].Concat(cipherText).ToArray(), state.clientState.nonce,
state.sharedKey);
}
Console.WriteLine("[UCS] {0}" + Environment.NewLine + "{1}", PacketInfos.GetPacketName(messageId),
Utilities.BinaryToHex(packet.Take(7).ToArray()) + Utilities.BinaryToHex(plainText));
ClientCrypto.EncryptPacket(state.clientState.socket, state.clientState, messageId, unknown, plainText);
}
