public static BigInteger Getx(BigInteger Salt, byte[] LogonHash)
{
Sha1Hash h = new Sha1Hash();
h.Update(Salt);
h.Update(LogonHash);
return new BigInteger(h.Final());
}
public static byte[] GetM2(BigInteger A, BigInteger M, BigInteger K)
{
Sha1Hash h = new Sha1Hash();
h.Update(A);
h.Update(M);
return h.Final(K);
}
public static byte[] GetLogonHash(string Username, string Password)
{
Sha1Hash h = new Sha1Hash();
string sI = String.Format("{0}:{1}", Username, Password.ToUpper());
h.Update(sI);
return h.Final();
}
public Sha1Warden(byte[] buff, UInt32 size)
{
sh = new Sha1Hash();
taken = size / 2;
byte[] buff2 = new byte[taken];
memcopy(buff2, buff);
sh.Initialize();
sh.Update(buff2);
memcopy(o1, sh.Final());
byte[] buff3 = new byte[20];
memcopy(buff3, buff, 20);
sh.Initialize();
sh.Update(buff3);
memcopy(o2, sh.Final());
memset(o0, 0x00);
FillUp();
}
// Converts S to K
// K is the Key which is passed to the Crypt class
public static byte[] ShaInterleave(BigInteger S)
{
byte[] t = S;
int HalfSize = t.Length / 2; // Untested. I previously hard coded this as 16
byte[] t1 = new byte[HalfSize];
for (int i = 0; i < HalfSize; i++)
t1[i] = t[i*2];
Sha1Hash sha = new Sha1Hash();
byte[] t1hash = sha.Final(t1);
byte[] vK = new byte[40];
for (int i = 0; i < 20; i++)
vK[i*2] = t1hash[i];
for (int i = 0; i < HalfSize; i++)
t1[i] = t[i*2+1];
sha = new Sha1Hash();
t1hash = sha.Final(t1);
for (int i = 0; i < 20; i++)
vK[i*2+1] = t1hash[i];
return vK;
}
// HandleLogonProof stuff
public static BigInteger Getu(BigInteger A, BigInteger B)
{
Sha1Hash h = new Sha1Hash();
h.Update(A);
return new BigInteger(h.Final(B));
}
public BigInteger GetM(string Username, BigInteger s, BigInteger A, BigInteger B, BigInteger K)
{
Sha1Hash sha;
sha = new Sha1Hash();
byte[] hash = sha.Final(N);
sha = new Sha1Hash();
byte[] ghash = sha.Final(g);
for (int i = 0; i < 20; ++i)
hash[i] ^= ghash[i];
// TODO: do t2 and t4 need to be BigInts? Could we just use the byte[]?
BigInteger t3 = new BigInteger(hash);
sha = new Sha1Hash();
sha.Update(Username);
BigInteger t4 = new BigInteger(sha.Final());
sha = new Sha1Hash();
sha.Update(t3);
sha.Update(t4);
sha.Update(s);
sha.Update(A);
sha.Update(B);
return new BigInteger(sha.Final(K));
}
private byte[] GenerateCrc(byte[] crcsalt)
{
Sha1Hash sha;
string[] files = { "WoW.bin", "DivxDecoder.bin", "Unicows.bin" };
byte[] buffer1 = new byte[0x40];
byte[] buffer2 = new byte[0x40];
for (int i = 0; i < 0x40; ++i)
{
buffer1[i] = 0x36;
buffer2[i] = 0x5c;
}
for (int i = 0; i < crcsalt.Length; ++i)
{
buffer1[i] ^= crcsalt[i];
buffer2[i] ^= crcsalt[i];
}
sha = new Sha1Hash();
sha.Update(buffer1);
foreach (string filename in files)
{
if (!File.Exists(@"crc\" + filename))
{
Log.WriteLine(LogType.Error, "CRC File {0} doesn't exist!", filename);
}
FileStream fs = new FileStream(@"crc\" + filename, FileMode.Open, FileAccess.Read);
byte[] Buffer = new byte[fs.Length];
fs.Read(Buffer, 0, (int)fs.Length);
sha.Update(Buffer);
}
byte[] hash1 = sha.Final();
sha = new Sha1Hash();
sha.Update(buffer2);
sha.Update(hash1);
return sha.Final();
}
public void AuthChallangeRequest(PacketIn packetIn)
{
packetIn.ReadByte();
byte error = packetIn.ReadByte();
if (error != 0x00)
{
Log.WriteLine(LogType.Error, "Authentication error: {0}", (AccountStatus)error);
Disconnect();
return;
}
B = new BigInteger(packetIn.ReadBytes(32)); // Varies
byte glen = packetIn.ReadByte(); // Length = 1
g = packetIn.ReadBytes(glen); // g = 7
byte Nlen = packetIn.ReadByte(); // Length = 32
N = packetIn.ReadBytes(Nlen); // N = B79B3E2A87823CAB8F5EBFBF8EB10108535006298B5BADBD5B53E1895E644B89
Salt = new BigInteger(packetIn.ReadBytes(32)); // Salt = 3516482AC96291B3C84B4FC204E65B623EFC2563C8B4E42AA454D93FCD1B56BA
crcsalt = packetIn.ReadBytes(16); // Varies
BigInteger S;
srp = new Srp6(new BigInteger(N), new BigInteger(g));
do
{
a = BigInteger.Random(19 * 8);
A = srp.GetA(a);
I = Srp6.GetLogonHash(mUsername, mPassword);
BigInteger x = Srp6.Getx(Salt, I);
BigInteger u = Srp6.Getu(A, B);
S = srp.ClientGetS(a, B, x, u);
}
while (S < 0);
mKey = Srp6.ShaInterleave(S);
M = srp.GetM(mUsername, Salt, A, B, new BigInteger(mKey));
packetIn.ReadByte();
Sha1Hash sha;
byte[] files_crc;
// Generate CRC/hashes of the Game Files
if (Config.Retail)
files_crc = GenerateCrc(crcsalt);
else
files_crc = new byte[20];
// get crc_hash from files_crc
sha = new Sha1Hash();
sha.Update(A);
sha.Update(files_crc);
byte[] crc_hash = sha.Final();
PacketOut packet = new PacketOut(LogonServerOpCode.AUTH_LOGON_PROOF);
packet.Write(A); // 32 bytes
packet.Write(M); // 20 bytes
packet.Write(crc_hash); // 20 bytes
packet.Write((byte)0); // number of keys
packet.Write((byte)0); // unk (1.11.x)
Send(packet);
}
public void DoAuthSession()
{
try
{
PacketOut packet = new PacketOut(WorldServerOpCode.CMSG_AUTH_SESSION);
Sha1Hash sha = new Sha1Hash();
sha.Update(mUsername);
sha.Update(new byte[4]); // t
sha.Update(ClientSeed);
sha.Update(ServerSeed);
sha.Update(mKey);
byte[] Digest = sha.Final();
packet.Write((UInt32)Config.Version.build);
packet.Write((UInt32)0);
packet.Write(mUsername);
packet.Write((UInt32)0);
packet.Write(ClientSeed);
packet.Write((UInt64)0);
packet.Write(Digest);
bool WantToCrash = false;
if (WantToCrash)
{
byte[] addons = { (byte)0x00 };
byte[] buffer2 = mClient.Shared.Compression.Compress(addons);
UInt32 Size = (UInt32)addons.Length;
packet.Write(Size);
packet.Write(buffer2);
}
else
{
byte[] addon_data = { 0x56, 0x01, 0x00, 0x00, 0x78, 0x9c, 0x75, 0xcc, 0xbd, 0x0e, 0xc2, 0x30, 0x0c, 0x04, 0xe0, 0xf2, 0x1e, 0xbc, 0x0c, 0x61, 0x40, 0x95, 0xc8, 0x42, 0xc3, 0x8c, 0x4c, 0xe2, 0x22, 0x0b, 0xc7, 0xa9, 0x8c, 0xcb, 0x4f, 0x9f, 0x1e, 0x16, 0x24, 0x06, 0x73, 0xeb, 0x77, 0x77, 0x81, 0x69, 0x59, 0x40, 0xcb, 0x69, 0x33, 0x67, 0xa3, 0x26, 0xc7, 0xbe, 0x5b, 0xd5, 0xc7, 0x7a, 0xdf, 0x7d, 0x12, 0xbe, 0x16, 0xc0, 0x8c, 0x71, 0x24, 0xe4, 0x12, 0x49, 0xa8, 0xc2, 0xe4, 0x95, 0x48, 0x0a, 0xc9, 0xc5, 0x3d, 0xd8, 0xb6, 0x7a, 0x06, 0x4b, 0xf8, 0x34, 0x0f, 0x15, 0x46, 0x73, 0x67, 0xbb, 0x38, 0xcc, 0x7a, 0xc7, 0x97, 0x8b, 0xbd, 0xdc, 0x26, 0xcc, 0xfe, 0x30, 0x42, 0xd6, 0xe6, 0xca, 0x01, 0xa8, 0xb8, 0x90, 0x80, 0x51, 0xfc, 0xb7, 0xa4, 0x50, 0x70, 0xb8, 0x12, 0xf3, 0x3f, 0x26, 0x41, 0xfd, 0xb5, 0x37, 0x90, 0x19, 0x66, 0x8f };
packet.Write(addon_data);
}
Send(packet);
mCrypt = new PacketCrypt(mKey);
mCrypt.Init();
}
catch (Exception e)
{
Log.WriteLine(LogType.Error, e.StackTrace);
}
}