Пример #1
0
 public void NTLMv1ResponseTest()
 {
     byte[] challenge = new byte[] { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef };
     byte[] response  = NTLMCryptography.ComputeNTLMv1Response(challenge, "Password");
     byte[] expected  = { 0x67, 0xc4, 0x30, 0x11, 0xf3, 0x02, 0x98, 0xa2, 0xad, 0x35, 0xec, 0xe6, 0x4f, 0x16, 0x33, 0x1c, 0x44, 0xbd, 0xbe, 0xd9, 0x27, 0x84, 0x1f, 0x94 };
     Assert.True(ByteUtils.AreByteArraysEqual(response, expected));
 }
Пример #2
0
        public NTStatus Login(string domainName, string userName, string password, AuthenticationMethod authenticationMethod)
        {
            if (!m_isConnected)
            {
                throw new InvalidOperationException("A connection must be successfully established before attempting login");
            }

            Capabilities clientCapabilities = Capabilities.NTSMB | Capabilities.RpcRemoteApi | Capabilities.NTStatusCode | Capabilities.NTFind;

            if (m_unicode)
            {
                clientCapabilities |= Capabilities.Unicode;
            }
            if (m_largeFiles)
            {
                clientCapabilities |= Capabilities.LargeFiles;
            }
            if (m_largeRead)
            {
                clientCapabilities |= Capabilities.LargeRead;
            }

            if (m_serverChallenge != null)
            {
                SessionSetupAndXRequest request = new SessionSetupAndXRequest();
                request.MaxBufferSize = ClientMaxBufferSize;
                request.MaxMpxCount   = m_maxMpxCount;
                request.Capabilities  = clientCapabilities;
                request.AccountName   = userName;
                request.PrimaryDomain = domainName;
                byte[] clientChallenge = new byte[8];
                new Random().NextBytes(clientChallenge);
                if (authenticationMethod == AuthenticationMethod.NTLMv1)
                {
                    request.OEMPassword     = NTLMCryptography.ComputeLMv1Response(m_serverChallenge, password);
                    request.UnicodePassword = NTLMCryptography.ComputeNTLMv1Response(m_serverChallenge, password);
                }
                else if (authenticationMethod == AuthenticationMethod.NTLMv1ExtendedSessionSecurity)
                {
                    // [MS-CIFS] CIFS does not support Extended Session Security because there is no mechanism in CIFS to negotiate Extended Session Security
                    throw new ArgumentException("SMB Extended Security must be negotiated in order for NTLMv1 Extended Session Security to be used");
                }
                else // NTLMv2
                {
                    // Note: NTLMv2 over non-extended security session setup is not supported under Windows Vista and later which will return STATUS_INVALID_PARAMETER.
                    // https://msdn.microsoft.com/en-us/library/ee441701.aspx
                    // https://msdn.microsoft.com/en-us/library/cc236700.aspx
                    request.OEMPassword = NTLMCryptography.ComputeLMv2Response(m_serverChallenge, clientChallenge, password, userName, domainName);
                    NTLMv2ClientChallenge clientChallengeStructure = new NTLMv2ClientChallenge(DateTime.UtcNow, clientChallenge, AVPairUtils.GetAVPairSequence(domainName, Environment.MachineName));
                    byte[] temp     = clientChallengeStructure.GetBytesPadded();
                    byte[] proofStr = NTLMCryptography.ComputeNTLMv2Proof(m_serverChallenge, temp, password, userName, domainName);
                    request.UnicodePassword = ByteUtils.Concatenate(proofStr, temp);
                }

                TrySendMessage(request);

                SMB1Message reply = WaitForMessage(CommandName.SMB_COM_SESSION_SETUP_ANDX);
                if (reply != null)
                {
                    m_isLoggedIn = (reply.Header.Status == NTStatus.STATUS_SUCCESS);
                    return(reply.Header.Status);
                }
                return(NTStatus.STATUS_INVALID_SMB);
            }
            else // m_securityBlob != null
            {
                byte[] negotiateMessage = NTLMAuthenticationHelper.GetNegotiateMessage(m_securityBlob, domainName, authenticationMethod);
                if (negotiateMessage == null)
                {
                    return(NTStatus.SEC_E_INVALID_TOKEN);
                }

                SessionSetupAndXRequestExtended request = new SessionSetupAndXRequestExtended();
                request.MaxBufferSize = ClientMaxBufferSize;
                request.MaxMpxCount   = m_maxMpxCount;
                request.Capabilities  = clientCapabilities;
                request.SecurityBlob  = negotiateMessage;
                TrySendMessage(request);

                SMB1Message reply = WaitForMessage(CommandName.SMB_COM_SESSION_SETUP_ANDX);
                if (reply != null)
                {
                    if (reply.Header.Status == NTStatus.STATUS_MORE_PROCESSING_REQUIRED && reply.Commands[0] is SessionSetupAndXResponseExtended)
                    {
                        SessionSetupAndXResponseExtended response = (SessionSetupAndXResponseExtended)reply.Commands[0];
                        byte[] authenticateMessage = NTLMAuthenticationHelper.GetAuthenticateMessage(response.SecurityBlob, domainName, userName, password, authenticationMethod, out m_sessionKey);
                        if (authenticateMessage == null)
                        {
                            return(NTStatus.SEC_E_INVALID_TOKEN);
                        }

                        m_userID = reply.Header.UID;
                        request  = new SessionSetupAndXRequestExtended();
                        request.MaxBufferSize = ClientMaxBufferSize;
                        request.MaxMpxCount   = m_maxMpxCount;
                        request.Capabilities  = clientCapabilities;
                        request.SecurityBlob  = authenticateMessage;
                        TrySendMessage(request);

                        reply = WaitForMessage(CommandName.SMB_COM_SESSION_SETUP_ANDX);
                        if (reply != null)
                        {
                            m_isLoggedIn = (reply.Header.Status == NTStatus.STATUS_SUCCESS);
                            return(reply.Header.Status);
                        }
                    }
                    else
                    {
                        return(reply.Header.Status);
                    }
                }
                return(NTStatus.STATUS_INVALID_SMB);
            }
        }
Пример #3
0
        public static byte[] GetAuthenticateMessage(byte[] securityBlob, string domainName, string userName, string password, AuthenticationMethod authenticationMethod, out byte[] sessionKey)
        {
            sessionKey = null;
            bool useGSSAPI = false;
            SimpleProtectedNegotiationTokenResponse inputToken = null;

            try
            {
                inputToken = SimpleProtectedNegotiationToken.ReadToken(securityBlob, 0, false) as SimpleProtectedNegotiationTokenResponse;
            }
            catch
            {
            }

            ChallengeMessage challengeMessage;

            if (inputToken != null)
            {
                challengeMessage = GetChallengeMessage(inputToken.ResponseToken);
                useGSSAPI        = true;
            }
            else
            {
                challengeMessage = GetChallengeMessage(securityBlob);
            }

            if (challengeMessage == null)
            {
                return(null);
            }

            DateTime time = DateTime.UtcNow;

            byte[] clientChallenge = new byte[8];
            new Random().NextBytes(clientChallenge);

            AuthenticateMessage authenticateMessage = new AuthenticateMessage();

            // https://msdn.microsoft.com/en-us/library/cc236676.aspx
            authenticateMessage.NegotiateFlags = NegotiateFlags.Sign |
                                                 NegotiateFlags.NTLMSessionSecurity |
                                                 NegotiateFlags.AlwaysSign |
                                                 NegotiateFlags.Version |
                                                 NegotiateFlags.Use128BitEncryption |
                                                 NegotiateFlags.Use56BitEncryption;
            if ((challengeMessage.NegotiateFlags & NegotiateFlags.UnicodeEncoding) > 0)
            {
                authenticateMessage.NegotiateFlags |= NegotiateFlags.UnicodeEncoding;
            }
            else
            {
                authenticateMessage.NegotiateFlags |= NegotiateFlags.OEMEncoding;
            }

            if ((challengeMessage.NegotiateFlags & NegotiateFlags.KeyExchange) > 0)
            {
                authenticateMessage.NegotiateFlags |= NegotiateFlags.KeyExchange;
            }

            if (authenticationMethod == AuthenticationMethod.NTLMv1)
            {
                authenticateMessage.NegotiateFlags |= NegotiateFlags.LanManagerSessionKey;
            }
            else
            {
                authenticateMessage.NegotiateFlags |= NegotiateFlags.ExtendedSessionSecurity;
            }

            authenticateMessage.UserName    = userName;
            authenticateMessage.DomainName  = domainName;
            authenticateMessage.WorkStation = Environment.MachineName;
            byte[] sessionBaseKey;
            byte[] keyExchangeKey;
            if (authenticationMethod == AuthenticationMethod.NTLMv1 || authenticationMethod == AuthenticationMethod.NTLMv1ExtendedSessionSecurity)
            {
                if (authenticationMethod == AuthenticationMethod.NTLMv1)
                {
                    authenticateMessage.LmChallengeResponse = NTLMCryptography.ComputeLMv1Response(challengeMessage.ServerChallenge, password);
                    authenticateMessage.NtChallengeResponse = NTLMCryptography.ComputeNTLMv1Response(challengeMessage.ServerChallenge, password);
                }
                else // NTLMv1ExtendedSessionSecurity
                {
                    authenticateMessage.LmChallengeResponse = ByteUtils.Concatenate(clientChallenge, new byte[16]);
                    authenticateMessage.NtChallengeResponse = NTLMCryptography.ComputeNTLMv1ExtendedSessionSecurityResponse(challengeMessage.ServerChallenge, clientChallenge, password);
                }
                // https://msdn.microsoft.com/en-us/library/cc236699.aspx
                sessionBaseKey = new MD4().GetByteHashFromBytes(NTLMCryptography.NTOWFv1(password));
                byte[] lmowf = NTLMCryptography.LMOWFv1(password);
                keyExchangeKey = NTLMCryptography.KXKey(sessionBaseKey, authenticateMessage.NegotiateFlags, authenticateMessage.LmChallengeResponse, challengeMessage.ServerChallenge, lmowf);
            }
            else // NTLMv2
            {
                NTLMv2ClientChallenge clientChallengeStructure = new NTLMv2ClientChallenge(time, clientChallenge, challengeMessage.TargetInfo);
                byte[] clientChallengeStructurePadded          = clientChallengeStructure.GetBytesPadded();
                byte[] ntProofStr = NTLMCryptography.ComputeNTLMv2Proof(challengeMessage.ServerChallenge, clientChallengeStructurePadded, password, userName, domainName);

                authenticateMessage.LmChallengeResponse = NTLMCryptography.ComputeLMv2Response(challengeMessage.ServerChallenge, clientChallenge, password, userName, challengeMessage.TargetName);
                authenticateMessage.NtChallengeResponse = ByteUtils.Concatenate(ntProofStr, clientChallengeStructurePadded);

                // https://msdn.microsoft.com/en-us/library/cc236700.aspx
                byte[] responseKeyNT = NTLMCryptography.NTOWFv2(password, userName, domainName);
                sessionBaseKey = new HMACMD5(responseKeyNT).ComputeHash(ntProofStr);
                keyExchangeKey = sessionBaseKey;
            }
            authenticateMessage.Version = NTLMVersion.Server2003;

            // https://msdn.microsoft.com/en-us/library/cc236676.aspx
            if ((challengeMessage.NegotiateFlags & NegotiateFlags.KeyExchange) > 0)
            {
                sessionKey = new byte[16];
                new Random().NextBytes(sessionKey);
                authenticateMessage.EncryptedRandomSessionKey = RC4.Encrypt(keyExchangeKey, sessionKey);
            }
            else
            {
                sessionKey = keyExchangeKey;
            }

            if (useGSSAPI)
            {
                SimpleProtectedNegotiationTokenResponse outputToken = new SimpleProtectedNegotiationTokenResponse();
                outputToken.ResponseToken = authenticateMessage.GetBytes();
                return(outputToken.GetBytes());
            }
            else
            {
                return(authenticateMessage.GetBytes());
            }
        }