/// <summary>
/// Encrypts a client/server packet
/// </summary>
/// <param name="p">Packet to encrypt</param>
/// <returns>Encrypted payload</returns>
public static byte[] EncryptPacket(Packet p)
{
int packetID = p.ID;
byte[] decryptedPayload = p.DecryptedPayload;
byte[] encryptedPayload;
if (packetID == 10100 || packetID == 20100)
{
// Both Session (10100) and SessionOk (20100) packets are not encrypted
// Thus.. just return the decrypted payload
return(decryptedPayload);
}
else if (packetID == 10101)
{
// The encrypted Login (10101) requires a nonce being calculated by the custom PK & the original PK
Blake2b.Init();
Blake2b.Update(CustomKeyPair.PublicKey);
Blake2b.Update(Keys.OriginalPublicKey);
var tmpNonce = Blake2b.Finish();
// The decrypted payload has to be prefixed with the nonce from plain 10101
decryptedPayload = _10101_SessionKey.Concat(_10101_Nonce).Concat(decryptedPayload).ToArray();
// Encrypt the payload with the custom NaCl
encryptedPayload = CustomNaCl.CreatePublicBox(decryptedPayload, tmpNonce, CustomKeyPair.SecretKey, Keys.OriginalPublicKey);
// The encrypted payload has to be prefixed with the custom PK
encryptedPayload = CustomKeyPair.PublicKey.Concat(encryptedPayload).ToArray();
}
else if (packetID == 20103 || packetID == 20104)
{
// The encrypted LoginFailed / LoginOk (20103/20104) requires a nonce being calculated by the nonce from 10101, the PK from 10101 and the client PK
Blake2b.Init();
Blake2b.Update(_10101_Nonce);
Blake2b.Update(_10101_PublicKey);
Blake2b.Update(Keys.ModdedPublicKey);
var tmpNonce = Blake2b.Finish();
// The decrypted payload has to be prefixed with the nonce from 20103/20104 and the sharedkey from 20103/20104
decryptedPayload = _20103_20104_Nonce.Concat(_20103_20104_SharedKey).Concat(decryptedPayload).ToArray();
// Encrypt the payload with the custom NaCl
encryptedPayload = CustomNaCl.CreatePublicBox(decryptedPayload, tmpNonce, Keys.GeneratedPrivateKey, _10101_PublicKey);
}
else
{
// We're dealing with another packet. Depends whether it's a client packet or not.
if (p.Destination == DataDestination.DATA_FROM_CLIENT)
{
encryptedPayload = CustomNaCl.CreateSecretBox(decryptedPayload, _10101_Nonce, _20103_20104_SharedKey).Skip(16).ToArray();
}
else
{
encryptedPayload = CustomNaCl.CreateSecretBox(decryptedPayload, _20103_20104_Nonce, _20103_20104_SharedKey).Skip(16).ToArray();
}
}
return(encryptedPayload);
}
/// <summary>
/// Decrypts a packet
/// </summary>
public static byte[] DecryptPacket(Packet p)
{
int packetID = p.ID;
byte[] encryptedPayload = p.Payload;
byte[] decryptedPayload;
if (packetID == 10100 || packetID == 20100)
{
// Both Session (10100) and SessionOk (20100) packets are not encrypted
// Thus.. just return the encrypted payload
Logger.LogDecryptedPacket(packetID, encryptedPayload);
return(encryptedPayload);
}
else if (packetID == 10101)
{
// The decrypted Login (10101) requires a nonce being calculated by the PK & the modded PK
_10101_PublicKey = encryptedPayload.Take(32).ToArray();
Blake2b.Init();
Blake2b.Update(_10101_PublicKey);
Blake2b.Update(Keys.ModdedPublicKey);
var tmpNonce = Blake2b.Finish();
// Decrypt the payload the custom NaCl
decryptedPayload = CustomNaCl.OpenPublicBox(encryptedPayload.Skip(32).ToArray(), tmpNonce, Keys.GeneratedPrivateKey, _10101_PublicKey);
_10101_SessionKey = decryptedPayload.Take(24).ToArray();
_10101_Nonce = decryptedPayload.Skip(24).Take(24).ToArray();
decryptedPayload = decryptedPayload.Skip(48).ToArray();
using (var reader = new PacketReader(new MemoryStream(decryptedPayload)))
{
Logger.Log("Packet 10101 Content ->", LogType.PACKET);
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 if (packetID == 14102)
{
_10101_Nonce.Increment();
decryptedPayload = CustomNaCl.OpenSecretBox(new byte[16].Concat(encryptedPayload).ToArray(), _10101_Nonce, _20103_20104_SharedKey);
using (var reader = new PacketReader(new MemoryStream(decryptedPayload)))
{
Logger.Log("Packet 14102 Content ->", LogType.PACKET);
Console.WriteLine("Subtick -> " + reader.ReadUInt32WithEndian());
Console.WriteLine("Checksum -> " + reader.ReadUInt32WithEndian());
var commandammound = reader.ReadUInt32WithEndian();
Console.WriteLine("Command Ammount -> " + commandammound);
if (commandammound > 0 && commandammound < 20)
{
Console.WriteLine("NestedCommands -> " + Encoding.UTF8.GetString(reader.ReadBytes()));
}
}
}
else if (packetID == 20103 || packetID == 20104)
{
// The decrypted LoginFailed / LoginOk (20103/20104) requires a nonce being calculated by the nonce from 10101, the custom PK & the original PK
Blake2b.Init();
Blake2b.Update(_10101_Nonce);
Blake2b.Update(CustomKeyPair.PublicKey);
Blake2b.Update(Keys.OriginalPublicKey);
var tmpNonce = Blake2b.Finish();
// Decrypt the payload with the custom NaCl
decryptedPayload = CustomNaCl.OpenPublicBox(encryptedPayload, tmpNonce, CustomKeyPair.SecretKey, Keys.OriginalPublicKey);
_20103_20104_Nonce = decryptedPayload.Take(24).ToArray();
_20103_20104_SharedKey = decryptedPayload.Skip(24).Take(32).ToArray();
decryptedPayload = decryptedPayload.Skip(56).ToArray();
if (packetID == 20104)
{
using (var reader = new PacketReader(new MemoryStream(decryptedPayload)))
{
Logger.Log("Packet 20104 Content ->", LogType.PACKET);
Console.WriteLine("User ID 1 -> " + reader.ReadInt64());
Console.WriteLine("User ID 2 -> " + reader.ReadInt64());
Console.WriteLine("PassToken -> " + reader.ReadString());
Console.WriteLine("Facebook ID -> " + reader.ReadString());
Console.WriteLine("GameCenter ID -> " + reader.ReadString());
}
}
else
{
using (var reader = new PacketReader(new MemoryStream(decryptedPayload)))
{
Logger.Log("Packet 20103 Content ->", LogType.PACKET);
Console.WriteLine("Error Code -> " + reader.ReadInt32());
Console.WriteLine("FingerPrint Data -> " + reader.ReadString());
}
}
}
else if (packetID == 24101)
{
_20103_20104_Nonce.Increment();
decryptedPayload = CustomNaCl.OpenSecretBox(new byte[16].Concat(encryptedPayload).ToArray(), _20103_20104_Nonce, _20103_20104_SharedKey);
using (var reader = new PacketReader(new MemoryStream(decryptedPayload)))
{
Logger.Log("Packet 24101 Content ->", LogType.PACKET);
Console.WriteLine("Last Visit -> " + reader.ReadInt32());
Console.WriteLine("Unknown 1 -> " + reader.ReadInt32());
Console.WriteLine("TimeStamp -> " + DateTimeConverter.FromUnixTimestamp(reader.ReadInt32()));
Console.WriteLine("Unknown 2 -> " + reader.ReadInt32());
Console.WriteLine("User ID -> " + reader.ReadInt64());
Console.WriteLine("Shield Duration -> " + TimeSpan.FromSeconds(reader.ReadInt32()));
Console.WriteLine("Unknown 3 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 4 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 5 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 6 -> " + reader.ReadInt32());
Console.WriteLine("Compressed -> " + reader.ReadBoolean());
var homeData = reader.ReadBytes();
using (var br = new BinaryReader(new MemoryStream(homeData))) // little endian
{
var decompressedLength = br.ReadInt32();
var compressedHome = br.ReadBytes(homeData.Length - 4); // -4 to remove the decompressedLength bytes read
Console.WriteLine("Compressed Home -> " + Encoding.UTF8.GetString(compressedHome));
Console.WriteLine("Compressed Home Lenght -> " + compressedHome.Length);
var homeJson = ZlibStream.UncompressString(compressedHome);
Console.WriteLine("Decompresssed Lenght -> " + decompressedLength);
Console.WriteLine("Decompressed Home -> " + homeJson);
}
Console.WriteLine("Unknown 7 -> " + reader.ReadInt32());
Console.WriteLine("User ID -> " + reader.ReadInt64());
Console.WriteLine("User ID 2 -> " + reader.ReadInt64());
var haveclan = reader.ReadBoolean();
Console.WriteLine("Have Clan -> " + haveclan);
if (haveclan)
{
Console.WriteLine("Clan ID -> " + reader.ReadInt64());
Console.WriteLine("Clan Name -> " + reader.ReadString());
Console.WriteLine("Clan Badge -> " + reader.ReadInt32());
Console.WriteLine("Clan Role -> " + reader.ReadInt32());
Console.WriteLine("Clan Level -> " + reader.ReadInt32());
Console.WriteLine("Unknown 8 -> " + reader.ReadBoolean());
}
Console.WriteLine("Unknown 9 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 10 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 11 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 12 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 13 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 14 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 15 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 16 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 17 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 18 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 19 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 20 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 21 -> " + reader.ReadInt32());
Console.WriteLine("League ID -> " + reader.ReadInt32());
Console.WriteLine("Alliance Castle Level -> " + reader.ReadInt32());
Console.WriteLine("Alliance Castle Total Capacity-> " + reader.ReadInt32());
Console.WriteLine("Alliance Castle Used Capacity -> " + reader.ReadInt32());
Console.WriteLine("Town Hall Level -> " + reader.ReadInt32());
Console.WriteLine("Name -> " + reader.ReadString());
Console.WriteLine("Facebook ID -> " + reader.ReadInt32());
Console.WriteLine("Level -> " + reader.ReadInt32());
Console.WriteLine("Experience -> " + reader.ReadInt32());
Console.WriteLine("Gems -> " + reader.ReadInt32());
Console.WriteLine("FreeGems -> " + reader.ReadInt32());
Console.WriteLine("Unknown 22 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 23 -> " + reader.ReadInt32());
Console.WriteLine("Trophies -> " + reader.ReadInt32());
Console.WriteLine("Attack Won -> " + reader.ReadInt32());
Console.WriteLine("Attack Lost -> " + reader.ReadInt32());
Console.WriteLine("Defences Won -> " + reader.ReadInt32());
Console.WriteLine("Defences Lost -> " + reader.ReadInt32());
Console.WriteLine("Unknown 24 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 25 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 26 -> " + reader.ReadInt32());
Console.WriteLine("Unknown 27 -> " + reader.ReadByte());
Console.WriteLine("Unknown 28 -> " + reader.ReadInt64());
Console.WriteLine("Name Set -> " + reader.ReadBoolean());
}
}
else
{
if (p.Destination == DataDestination.DATA_FROM_CLIENT)
{
_10101_Nonce.Increment();
decryptedPayload = CustomNaCl.OpenSecretBox(new byte[16].Concat(encryptedPayload).ToArray(), _10101_Nonce, _20103_20104_SharedKey);
}
else
{
_20103_20104_Nonce.Increment();
decryptedPayload = CustomNaCl.OpenSecretBox(new byte[16].Concat(encryptedPayload).ToArray(), _20103_20104_Nonce, _20103_20104_SharedKey);
}
}
Logger.LogDecryptedPacket(packetID, decryptedPayload);
return(decryptedPayload);
}
