private static void Send(RdpPacket packet)
{
packet.Position = 0L;
byte[] buffer = new byte[packet.Length];
packet.Read(buffer, 0, (int)packet.Length);
NTLM.DumpHex(buffer, (int)packet.Length, "Send");
Network.Send(buffer);
}
public static RdpPacket WriteNegoToken()
{
m_NTLMAuthenticate = new NTLM(Network.OpenSocket, Options.Username, Options.Password, Options.Domain);
byte[] buffer = m_NTLMAuthenticate.Negotiate();
RdpPacket packet = new RdpPacket();
packet.Write(buffer, 0, buffer.Length);
packet.Position = 0L;
return(packet);
}
private static void ProcesssResponse(RdpPacket packet, byte[] ServerPublicKey)
{
ASN1.ReadTag(packet, ASN1.SequenceTag(0), "TSRequest");
ASN1.ReadTag(packet, ASN1.ContextTag(0), "CTX_Version");
if (ASN1.ReadInteger(packet) < 2)
{
throw new Exception("TSRequest version not supported!");
}
ASN1.CloseTag(packet, "CTX_Version");
byte[] buffer = null;
int num2 = ASN1.ReadTag(packet, "Tag");
if (num2 == ASN1.ContextTag(1))
{
ASN1.ReadTag(packet, ASN1.SequenceTag(0), "NegTokens");
ASN1.ReadTag(packet, ASN1.SequenceTag(0), "NegTokens2");
ASN1.ReadTag(packet, ASN1.ContextTag(0), "CTX_OctetString");
m_ChallengeMsg = new byte[ASN1.ReadTag(packet, ASN1.OctetStringTag(), "OctetString")];
packet.Read(m_ChallengeMsg, 0, m_ChallengeMsg.Length);
ASN1.CloseTag(packet, "OctetString");
ASN1.CloseTag(packet, "CTX_OctetString");
ASN1.CloseTag(packet, "NegTokens2");
ASN1.CloseTag(packet, "NegTokens");
}
else if (num2 == ASN1.ContextTag(3))
{
buffer = new byte[ASN1.ReadTag(packet, ASN1.OctetStringTag(), "OctetString")];
packet.Read(buffer, 0, buffer.Length);
ASN1.CloseTag(packet, "OctetString");
}
ASN1.CloseTag(packet, "Tag");
ASN1.CloseTag(packet, "TSRequest");
if (buffer != null)
{
byte[] buffer2 = m_NTLMAuthenticate.DecryptMessage(buffer);
buffer2[0] = (byte)(buffer2[0] - 1);
if (!NTLM.CompareArray(buffer2, ServerPublicKey))
{
throw new Exception("Unable to verify the server's public key!");
}
buffer2[0] = (byte)(buffer2[0] + 1);
SendTSRequest(null, WriteTSCredentials(), null);
m_bAuthenticated = true;
}
else
{
ReadNegoToken(m_ChallengeMsg, ServerPublicKey);
}
}
private static RdpPacket Receive()
{
byte[] buffer = new byte[0x2000];
int length = Network.Receive(buffer);
NTLM.DumpHex(buffer, length, "Receive");
RdpPacket packet = new RdpPacket();
packet.Write(buffer, 0, length);
packet.Position = 0L;
return(packet);
}
