internal static SMB1Command GetSessionSetupResponse(SMB1Header header, SessionSetupAndXRequest request, GSSProvider securityProvider, SMB1ConnectionState state)
{
SessionSetupAndXResponse response = new SessionSetupAndXResponse();
// The PrimaryDomain field in the request is used to determine with domain controller should authenticate the user credentials,
// However, the domain controller itself does not use this field.
// See: http://msdn.microsoft.com/en-us/library/windows/desktop/aa378749%28v=vs.85%29.aspx
AuthenticateMessage message = CreateAuthenticateMessage(request.AccountName, request.OEMPassword, request.UnicodePassword);
header.Status = securityProvider.NTLMAuthenticate(state.AuthenticationContext, message);
if (header.Status != NTStatus.STATUS_SUCCESS)
{
state.LogToServer(Severity.Information, "Session Setup: User '{0}' failed authentication (Domain: '{1}', OS: '{2}'), NTStatus: {3}", request.AccountName, request.PrimaryDomain, request.NativeOS, header.Status);
return(new ErrorResponse(request.CommandName));
}
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?;
SMB1Session session;
if (!isGuest.HasValue || !isGuest.Value)
{
state.LogToServer(Severity.Information, "Session Setup: User '{0}' authenticated successfully (Domain: '{1}', Workstation: '{2}', OS version: '{3}').", message.UserName, message.DomainName, message.WorkStation, osVersion);
session = state.CreateSession(message.UserName, message.WorkStation, sessionKey, accessToken);
}
else
{
state.LogToServer(Severity.Information, "Session Setup: User '{0}' failed authentication (Domain: '{1}', Workstation: '{2}', OS version: '{3}'), logged in as guest.", message.UserName, message.DomainName, message.WorkStation, osVersion);
session = state.CreateSession("Guest", message.WorkStation, sessionKey, accessToken);
response.Action = SessionSetupAction.SetupGuest;
}
if (session == null)
{
header.Status = NTStatus.STATUS_TOO_MANY_SESSIONS;
return(new ErrorResponse(request.CommandName));
}
header.UID = session.UserID;
response.PrimaryDomain = request.PrimaryDomain;
if ((request.Capabilities & ServerCapabilities.LargeRead) > 0)
{
state.LargeRead = true;
}
if ((request.Capabilities & ServerCapabilities.LargeWrite) > 0)
{
state.LargeWrite = true;
}
response.NativeOS = String.Empty; // "Windows Server 2003 3790 Service Pack 2"
response.NativeLanMan = String.Empty; // "Windows Server 2003 5.2"
return(response);
}
internal static SMB1Command GetSessionSetupResponseExtended(SMB1Header header, SessionSetupAndXRequestExtended request, GSSProvider securityProvider, SMB1ConnectionState state)
{
SessionSetupAndXResponseExtended response = new SessionSetupAndXResponseExtended();
// [MS-SMB] The Windows GSS implementation supports raw Kerberos / NTLM messages in the SecurityBlob
byte[] outputToken;
NTStatus status = securityProvider.AcceptSecurityContext(ref state.AuthenticationContext, request.SecurityBlob, 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);
header.Status = status;
return(new ErrorResponse(request.CommandName));
}
if (outputToken != null)
{
response.SecurityBlob = outputToken;
}
// According to [MS-SMB] 3.3.5.3, a UID MUST be allocated if the server returns STATUS_MORE_PROCESSING_REQUIRED
if (header.UID == 0)
{
ushort?userID = state.AllocateUserID();
if (!userID.HasValue)
{
header.Status = NTStatus.STATUS_TOO_MANY_SESSIONS;
return(new ErrorResponse(request.CommandName));
}
header.UID = userID.Value;
}
if (status == NTStatus.SEC_I_CONTINUE_NEEDED)
{
header.Status = NTStatus.STATUS_MORE_PROCESSING_REQUIRED;
}
else // header.Status == NTStatus.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);
state.CreateSession(header.UID, userName, machineName, sessionKey, accessToken);
}
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(header.UID, "Guest", machineName, sessionKey, accessToken);
response.Action = SessionSetupAction.SetupGuest;
}
}
response.NativeOS = String.Empty; // "Windows Server 2003 3790 Service Pack 2"
response.NativeLanMan = String.Empty; // "Windows Server 2003 5.2"
return(response);
}
