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");
}
byte[] negotiateMessage = NTLMAuthenticationHelper.GetNegotiateMessage(m_securityBlob, domainName, authenticationMethod);
if (negotiateMessage == null)
{
return(NTStatus.SEC_E_INVALID_TOKEN);
}
SessionSetupRequest request = new SessionSetupRequest();
request.SecurityMode = SecurityMode.SigningEnabled;
request.SecurityBuffer = negotiateMessage;
TrySendCommand(request);
SMB2Command response = WaitForCommand(SMB2CommandName.SessionSetup);
if (response != null)
{
if (response.Header.Status == NTStatus.STATUS_MORE_PROCESSING_REQUIRED && response is SessionSetupResponse)
{
byte[] authenticateMessage = NTLMAuthenticationHelper.GetAuthenticateMessage(((SessionSetupResponse)response).SecurityBuffer, domainName, userName, password, authenticationMethod, out m_sessionKey);
if (authenticateMessage == null)
{
return(NTStatus.SEC_E_INVALID_TOKEN);
}
m_sessionID = response.Header.SessionID;
request = new SessionSetupRequest();
request.SecurityMode = SecurityMode.SigningEnabled;
request.SecurityBuffer = authenticateMessage;
TrySendCommand(request);
response = WaitForCommand(SMB2CommandName.SessionSetup);
if (response != null)
{
m_isLoggedIn = (response.Header.Status == NTStatus.STATUS_SUCCESS);
if (m_isLoggedIn)
{
m_signingKey = SMB2Cryptography.GenerateSigningKey(m_sessionKey, m_dialect, null);
if (m_dialect == SMB2Dialect.SMB300)
{
m_encryptSessionData = (((SessionSetupResponse)response).SessionFlags & SessionFlags.EncryptData) > 0;
m_encryptionKey = SMB2Cryptography.GenerateClientEncryptionKey(m_sessionKey, SMB2Dialect.SMB300, null);
m_decryptionKey = SMB2Cryptography.GenerateClientDecryptionKey(m_sessionKey, SMB2Dialect.SMB300, null);
}
}
return(response.Header.Status);
}
}
else
{
return(response.Header.Status);
}
}
return(NTStatus.STATUS_INVALID_SMB);
}
public void TestSMB300SignatureCalculation()
{
byte[] exportedSessionKey = new byte[] { 0x35, 0x40, 0x24, 0xCB, 0xCA, 0x4F, 0x94, 0xAA, 0x51, 0xD4, 0x03, 0x3E, 0x6E, 0x9B, 0x2F, 0x98 };
byte[] signingKey = SMB2Cryptography.GenerateSigningKey(exportedSessionKey, SMB2Dialect.SMB300, null);
byte[] message = new byte[] { 0xFE, 0x53, 0x4D, 0x42, 0x40, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00,
0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4D, 0x00, 0x00, 0x20, 0x00, 0x70, 0x00, 0x00,
0x73, 0xF2, 0xCC, 0x56, 0x09, 0x3E, 0xD2, 0xB5, 0xD7, 0x10, 0x66, 0x6C, 0xE4, 0x28, 0x2D, 0xD1,
0x09, 0x00, 0x00, 0x00, 0x48, 0x00, 0x09, 0x00, 0xA1, 0x07, 0x30, 0x05, 0xA0, 0x03, 0x0A, 0x01, 0x00 };
ByteWriter.WriteBytes(message, 48, new byte[16]);
byte[] signature = SMB2Cryptography.CalculateSignature(signingKey, SMB2Dialect.SMB300, message, 0, message.Length);
signature = ByteReader.ReadBytes(signature, 0, 16);
byte[] expected = new byte[] { 0x73, 0xF2, 0xCC, 0x56, 0x09, 0x3E, 0xD2, 0xB5, 0xD7, 0x10, 0x66, 0x6C, 0xE4, 0x28, 0x2D, 0xD1 };
Assert.True(ByteUtils.AreByteArraysEqual(signature, expected));
}
internal static SMB2Command GetSessionSetupResponse(SessionSetupRequest request, GSSProvider securityProvider, SMB2ConnectionState state)
{
// [MS-SMB2] Windows [..] will also accept raw Kerberos messages and implicit NTLM messages as part of GSS authentication.
SessionSetupResponse response = new SessionSetupResponse();
byte[] outputToken;
NTStatus status = securityProvider.AcceptSecurityContext(ref state.AuthenticationContext, request.SecurityBuffer, out outputToken);
if (status != NTStatus.STATUS_SUCCESS && status != NTStatus.SEC_I_CONTINUE_NEEDED)
{
string userName = securityProvider.GetContextAttribute(state.AuthenticationContext, GSSAttributeName.UserName) as string;
string domainName = securityProvider.GetContextAttribute(state.AuthenticationContext, GSSAttributeName.DomainName) as string;
string machineName = securityProvider.GetContextAttribute(state.AuthenticationContext, GSSAttributeName.MachineName) as string;
string osVersion = securityProvider.GetContextAttribute(state.AuthenticationContext, GSSAttributeName.OSVersion) as string;
state.LogToServer(Severity.Information, "Session Setup: User '{0}' failed authentication (Domain: '{1}', Workstation: '{2}', OS version: '{3}'), NTStatus: {4}", userName, domainName, machineName, osVersion, status);
return(new ErrorResponse(request.CommandName, status));
}
if (outputToken != null)
{
response.SecurityBuffer = outputToken;
}
// According to [MS-SMB2] 3.3.5.5.3, response.Header.SessionID must be allocated if the server returns STATUS_MORE_PROCESSING_REQUIRED
if (request.Header.SessionID == 0)
{
ulong?sessionID = state.AllocateSessionID();
if (!sessionID.HasValue)
{
return(new ErrorResponse(request.CommandName, NTStatus.STATUS_TOO_MANY_SESSIONS));
}
response.Header.SessionID = sessionID.Value;
}
if (status == NTStatus.SEC_I_CONTINUE_NEEDED)
{
response.Header.Status = NTStatus.STATUS_MORE_PROCESSING_REQUIRED;
}
else // status == STATUS_SUCCESS
{
string userName = securityProvider.GetContextAttribute(state.AuthenticationContext, GSSAttributeName.UserName) as string;
string domainName = securityProvider.GetContextAttribute(state.AuthenticationContext, GSSAttributeName.DomainName) as string;
string machineName = securityProvider.GetContextAttribute(state.AuthenticationContext, GSSAttributeName.MachineName) as string;
string osVersion = securityProvider.GetContextAttribute(state.AuthenticationContext, GSSAttributeName.OSVersion) as string;
byte[] sessionKey = securityProvider.GetContextAttribute(state.AuthenticationContext, GSSAttributeName.SessionKey) as byte[];
object accessToken = securityProvider.GetContextAttribute(state.AuthenticationContext, GSSAttributeName.AccessToken);
bool? isGuest = securityProvider.GetContextAttribute(state.AuthenticationContext, GSSAttributeName.IsGuest) as bool?;
if (!isGuest.HasValue || !isGuest.Value)
{
state.LogToServer(Severity.Information, "Session Setup: User '{0}' authenticated successfully (Domain: '{1}', Workstation: '{2}', OS version: '{3}').", userName, domainName, machineName, osVersion);
bool signingRequired = (request.SecurityMode & SecurityMode.SigningRequired) > 0;
SMB2Dialect smb2Dialect = SMBServer.ToSMB2Dialect(state.Dialect);
byte[] signingKey = SMB2Cryptography.GenerateSigningKey(sessionKey, smb2Dialect, null);
state.CreateSession(request.Header.SessionID, userName, machineName, sessionKey, accessToken, signingRequired, signingKey);
}
else
{
state.LogToServer(Severity.Information, "Session Setup: User '{0}' failed authentication (Domain: '{1}', Workstation: '{2}', OS version: '{3}'), logged in as guest.", userName, domainName, machineName, osVersion);
state.CreateSession(request.Header.SessionID, "Guest", machineName, sessionKey, accessToken, false, null);
response.SessionFlags = SessionFlags.IsGuest;
}
}
return(response);
}
