public KileApRequest CreateApRequest(
ApOptions apOptions,
ChecksumType checksumType,
int seqNumber,
ChecksumFlags flag,
EncryptionKey subkey,
AuthorizationData authorizationData)
{
var request = new KileApRequest(context);
request.Authenticator = CreateAuthenticator(
checksumType,
seqNumber,
flag,
subkey,
authorizationData,
context.ApSessionKey,
null);
request.Request.ap_options = new APOptions(KerberosUtility.ConvertInt2Flags((int)apOptions));
request.Request.msg_type = new Asn1Integer((int)MsgType.KRB_AP_REQ);
request.Request.pvno = new Asn1Integer(ConstValue.KERBEROSV5);
request.Request.ticket = context.ApTicket;
return(request);
}
/// <summary>
/// Construct PA_TGS_REQ for TGS request.
/// </summary>
/// <param name="cRealm">This field contains the name of the realm in which the client is registered and in
/// which initial authentication took place.</param>
/// <param name="cName">This field contains the name part of the client's principal identifier.</param>
/// <param name="checksumType">The checksum type in Authenticator.</param>
/// <param name="checksumBody">The data to compute checksum.</param>
/// <returns>The constructed PaData.</returns>
private PA_DATA ConstructTgsPaData(ChecksumType checksumType, byte[] checksumBody)
{
var request = new AP_REQ();
KerbAuthDataTokenRestrictions adRestriction =
ConstructKerbAuthDataTokenRestrictions(0,
(uint)LSAP_TOKEN_INFO_INTEGRITY_Flags.FULL_TOKEN,
(uint)LSAP_TOKEN_INFO_INTEGRITY_TokenIL.Medium,
new Guid().ToString());
AuthorizationData authData = ConstructAuthorizationData(adRestriction);
// create and encrypt authenticator
Authenticator authenticator = CreateAuthenticator(
checksumType,
0,
0,
null,
authData,
context.TgsSessionKey,
checksumBody);
var asnBuffPlainAuthenticator = new Asn1BerEncodingBuffer();
authenticator.BerEncode(asnBuffPlainAuthenticator, true);
byte[] encAsnEncodedAuth =
KerberosUtility.Encrypt((EncryptionType)context.TgsSessionKey.keytype.Value,
context.TgsSessionKey.keyvalue.ByteArrayValue,
asnBuffPlainAuthenticator.Data,
(int)KeyUsageNumber.TG_REQ_PA_TGS_REQ_padataOR_AP_REQ_Authenticator);
request.authenticator = new EncryptedData();
request.authenticator.etype = new Microsoft.Protocols.TestTools.StackSdk.Security.KerberosLib.KerbInt32(context.TgsSessionKey.keytype.Value);
request.authenticator.cipher = new Asn1OctetString(encAsnEncodedAuth);
// create AP request
request.ap_options = new APOptions(KerberosUtility.ConvertInt2Flags((int)ApOptions.None));
request.msg_type = new Asn1Integer((int)MsgType.KRB_AP_REQ);
request.pvno = new Asn1Integer(ConstValue.KERBEROSV5);
request.ticket = context.TgsTicket;
var apBerBuffer = new Asn1BerEncodingBuffer();
request.BerEncode(apBerBuffer, true);
return(new PA_DATA(new KerbInt32((int)PaDataType.PA_TGS_REQ), new Asn1OctetString(apBerBuffer.Data)));
}
/// <summary>
/// Initialize the context from a token.
/// </summary>
/// <param name="inToken">The token used to initialize.</param>
/// <exception cref="System.NotSupportedException">Thrown when the ContextAttribute contains a flag that not be
/// supported.</exception>
/// <exception cref="System.InvalidOperationException">Thrown when an error is returned.</exception>
public override void Initialize(byte[] inToken)
{
if (inToken == null || inToken.Length == 0)
{
KilePdu response = null;
string sname = ConstValue.KERBEROS_SNAME;
KileAsRequest asRequest;
EncryptionKey subkey = null;
// Create and send AS request for pre-authentication
KdcOptions options = KdcOptions.FORWARDABLE | KdcOptions.RENEWABLE
| KdcOptions.CANONICALIZE | KdcOptions.RENEWABLEOK;
KDCOptions flags = new KDCOptions(KerberosUtility.ConvertInt2Flags((int)options));
// Create and send AS request for pre-authentication
asRequest = client.CreateAsRequest(sname, flags, null, this.GetClientSupportedEtype());
client.SendPdu(asRequest);
response = client.ExpectPdu(ConstValue.TIMEOUT_DEFAULT);
KileKrbError preAuthError = response as KileKrbError;
if ((preAuthError == null) || (!preAuthError.ErrorCode.Equals(KRB_ERROR_CODE.KDC_ERR_PREAUTH_REQUIRED)))
{
throw new InvalidOperationException("The Error code should be KDC_ERR_PREAUTH_REQUIRED");
}
// Create and send AS request for TGT
var defualtEncryptType = (client.ClientContext.TgsSessionKey == null) ? EncryptionType.RC4_HMAC : (EncryptionType)client.ClientContext.TgsSessionKey.keytype.Value;
PaEncTimeStamp timestamp = client.ConstructPaEncTimeStamp(defualtEncryptType);
PaPacRequest pacRequest = client.ConstructPaPacRequest(true);
Asn1SequenceOf <PA_DATA> paData = client.ConstructPaData(timestamp, pacRequest);
if ((contextAttribute & ClientSecurityContextAttribute.DceStyle) == ClientSecurityContextAttribute.DceStyle)
{
asRequest = client.CreateAsRequest(sname, flags, paData, this.GetClientSupportedEtype());
//subkey = new EncryptionKey((int)EncryptionType.AES256_CTS_HMAC_SHA1_96,
// KileUtility.GenerateRandomBytes(ConstValue.AES_KEY_LENGTH));
var key = KeyGenerator.MakeKey(EncryptionType.AES256_CTS_HMAC_SHA1_96, client.ClientContext.Password, client.ClientContext.Salt);
subkey = new EncryptionKey(new KerbInt32((long)EncryptionType.AES256_CTS_HMAC_SHA1_96), new Asn1OctetString(key));
}
else
{
asRequest = client.CreateAsRequest(sname, flags, paData, this.GetClientSupportedEtype());
}
client.SendPdu(asRequest);
response = client.ExpectPdu(ConstValue.TIMEOUT_DEFAULT);
if (response.GetType() == typeof(KileKrbError))
{
throw new InvalidOperationException("Received Kerberos Error response: " + ((KileKrbError)response).ErrorCode);
}
KileAsResponse asResponse = (KileAsResponse)response;
// Create and send TGS request
// for example: "KERB.COMldapsut02.kerb.com"
client.ClientContext.Salt = domain.ToUpper();
string[] nameList = userLogonName.Split('/');
foreach (string name in nameList)
{
client.ClientContext.Salt += name;
}
KileTgsRequest tgsRequest = client.CreateTgsRequest(this.serverName,
flags,
null,
ChecksumType.hmac_md5_string,
null,
null);
client.SendPdu(tgsRequest);
response = client.ExpectPdu(ConstValue.TIMEOUT_DEFAULT);
if (response.GetType() == typeof(KileKrbError))
{
throw new InvalidOperationException("Received Kerberos Error response: " + ((KileKrbError)response).ErrorCode);
}
KileTgsResponse tgsResponse = (KileTgsResponse)response;
ApOptions apOption;
ChecksumFlags checksumFlag;
GetFlagsByContextAttribute(out apOption, out checksumFlag);
KerbAuthDataTokenRestrictions adRestriction =
client.ConstructKerbAuthDataTokenRestrictions(0,
(uint)LSAP_TOKEN_INFO_INTEGRITY_Flags.FULL_TOKEN,
(uint)LSAP_TOKEN_INFO_INTEGRITY_TokenIL.Medium,
new Guid().ToString());
AdAuthDataApOptions adApOptions = client.ConstructAdAuthDataApOptions(ConstValue.KERB_AP_OPTIONS_CBT);
AuthorizationData authData = client.ConstructAuthorizationData(adRestriction, adApOptions);
KileApRequest apRequest = client.CreateApRequest(apOption,
ChecksumType.ap_authenticator_8003,
ConstValue.SEQUENCE_NUMBER_DEFAULT,
checksumFlag,
subkey,
authData);
token = apRequest.ToBytes();
bool isMutualAuth = (contextAttribute & ClientSecurityContextAttribute.MutualAuth)
== ClientSecurityContextAttribute.MutualAuth;
bool isDceStyle = (contextAttribute & ClientSecurityContextAttribute.DceStyle)
== ClientSecurityContextAttribute.DceStyle;
if (isMutualAuth || isDceStyle)
{
continueProcess = true; // SEC_I_CONTINUE_NEEDED;
}
else
{
continueProcess = false; // SEC_E_OK;
}
}
else // mutual authentication
{
KileApResponse apResponse = client.ParseApResponse(inToken);
token = null;
if ((contextAttribute & ClientSecurityContextAttribute.DceStyle)
== ClientSecurityContextAttribute.DceStyle)
{
KileApResponse apResponseSend = client.CreateApResponse(null);
token = apResponseSend.ToBytes();
}
this.continueProcess = false; // SEC_E_OK;
}
}
private void Smb2KerberosAuthentication(CaseVariant variant)
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Initialize Kerberos Functional Client");
KerberosFunctionalClient kerberosClient = new KerberosFunctionalClient(
TestConfig.DomainName,
TestConfig.UserName,
TestConfig.UserPassword,
KerberosAccountType.User,
KDCIP,
KDCPort,
TransportType.TCP,
OidPkt,
BaseTestSite);
#region Service Ticket
EncryptionKey serviceKey;
EncTicketPart encTicketPart = RetrieveAndDecryptServiceTicket(kerberosClient, out serviceKey);
Ticket serviceTicket = kerberosClient.Context.Ticket.Ticket;
Realm crealm = serviceTicket.realm;
BaseTestSite.Assert.AreEqual(TestConfig.DomainName.ToLower(),
encTicketPart.crealm.Value.ToLower(),
"Realm name in service ticket encrypted part should match as expected, case insensitive");
BaseTestSite.Assert.AreEqual(TestConfig.UserName.ToLower(),
KerberosUtility.PrincipalName2String(encTicketPart.cname).ToLower(),
"User name in service ticket encrypted part should match as expected, case insensitive.");
if (variant.HasFlag(CaseVariant.AUTHDATA_UNKNOWN_TYPE_IN_TKT))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Add a type-unknown AuthorizationData to the ticket");
AuthorizationDataElement unknownElement = GenerateUnKnownAuthorizationDataElement();
AppendNewAuthDataElement(encTicketPart.authorization_data, unknownElement);
}
if (variant.HasFlag(CaseVariant.AUTHDATA_UNKNOWN_TYPE_IN_TKT_OPTIONAL))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Add a type-unknown AuthorizationData which is inside AD_IF_RELEVANT to the ticket");
AuthorizationDataElement unknownElement = GenerateUnKnownAuthorizationDataElement();
AD_IF_RELEVANT ifRelavantElement =
new AD_IF_RELEVANT(new[] { unknownElement });
var dataBuffer = new Asn1BerEncodingBuffer();
ifRelavantElement.BerEncode(dataBuffer);
AuthorizationDataElement unknownElementOptional =
new AuthorizationDataElement(new KerbInt32((long)AuthorizationData_elementType.AD_IF_RELEVANT), new Asn1OctetString(dataBuffer.Data));
AppendNewAuthDataElement(encTicketPart.authorization_data, unknownElementOptional);
}
if (variant.HasFlag(CaseVariant.TICKET_NOT_VALID))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Change the Ticket start time to tomorrow");
DateTime tomorrow = DateTime.Now.AddDays(1);
string kerbTimeString = tomorrow.ToUniversalTime().ToString("yyyyMMddhhmmssZ");
encTicketPart.starttime = new KerberosTime(kerbTimeString, true);
}
if (variant.HasFlag(CaseVariant.TICKET_EXPIRED))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Change the Ticket end time to yesterday");
DateTime yesterday = DateTime.Now.AddDays(-1);
string kerbTimeString = yesterday.ToUniversalTime().ToString("yyyyMMddhhmmssZ");
encTicketPart.endtime = new KerberosTime(kerbTimeString, true);
}
if (variant.HasFlag(CaseVariant.TICKET_WRONG_ENC_KEY))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Modify the Ticket, making it encrypted with wrong key");
serviceKey = KerberosUtility.GenerateKey(serviceKey);
}
EncryptedData data = EncryptTicket(encTicketPart, serviceKey);
serviceTicket.enc_part = data;
if (variant.HasFlag(CaseVariant.TICKET_WRONG_REALM))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Change the Realm in the Ticket to an unknown realm");
serviceTicket.realm = new Realm("kerb.com");
}
if (variant.HasFlag(CaseVariant.TICKET_WRONG_SNAME))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Change the SNAME in the Ticket to an unknown service name");
serviceTicket.sname = new PrincipalName(new KerbInt32((long)PrincipalType.NT_SRV_INST),
KerberosUtility.String2SeqKerbString("UnknownService", TestConfig.DomainName));
}
if (variant.HasFlag(CaseVariant.TICKET_WRONG_KVNO))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep,
"Change the KVNO in the Ticket to an invalid Key Version Number (Int32.MaxValue)");
const int invalidKvno = System.Int32.MaxValue;
serviceTicket.enc_part.kvno = new KerbInt32(invalidKvno);
}
#endregion
#region Authenticator
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Create Authenticator");
EncryptionKey subkey = KerberosUtility.GenerateKey(kerberosClient.Context.SessionKey);
PrincipalName cname;
if (variant.HasFlag(CaseVariant.AUTHENTICATOR_CNAME_NOT_MATCH))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Use wrong cname in the Authenticator");
cname = new PrincipalName(new KerbInt32((long)PrincipalType.NT_PRINCIPAL),
KerberosUtility.String2SeqKerbString(TestConfig.NonAdminUserName, TestConfig.DomainName));
}
else
{
cname = kerberosClient.Context.CName.Name;
}
Authenticator authenticator = CreateAuthenticator(cname, crealm, subkey);
if (variant.HasFlag(CaseVariant.AUTHENTICATOR_CREALM_NOT_MATCH))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Use wrong crealm in the Authenticator");
authenticator.crealm = new Realm("kerb.com");
}
if (variant.HasFlag(CaseVariant.AUTHENTICATOR_EXCEED_TIME_SKEW))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Change the ctime in the Authenticator to one hour later");
DateTime oneHourLater = DateTime.Now.AddHours(1);
string kerbTimeString = oneHourLater.ToUniversalTime().ToString("yyyyMMddhhmmssZ");
authenticator.ctime = new KerberosTime(kerbTimeString, true);
}
if (variant.HasFlag(CaseVariant.AUTHDATA_UNKNOWN_TYPE_IN_AUTHENTICATOR))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Add a type-unknown AuthorizationData to the Authenticator");
AuthorizationDataElement unknownElement = GenerateUnKnownAuthorizationDataElement();
authenticator.authorization_data = new AuthorizationData(new[] { unknownElement });
}
if (variant.HasFlag(CaseVariant.AUTHDATA_UNKNOWN_TYPE_IN_AUTHENTICATOR_OPTIONAL))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep,
"Add a type-unknown AuthorizationData which is inside AD_IF_RELEVANT to the Authenticator");
AuthorizationDataElement unknownElement = GenerateUnKnownAuthorizationDataElement();
AD_IF_RELEVANT ifRelavantElement =
new AD_IF_RELEVANT(new[] { unknownElement });
var dataBuffer = new Asn1BerEncodingBuffer();
ifRelavantElement.BerEncode(dataBuffer);
AuthorizationDataElement unknownElementOptional =
new AuthorizationDataElement(new KerbInt32((long)AuthorizationData_elementType.AD_IF_RELEVANT), new Asn1OctetString(dataBuffer.Data));
authenticator.authorization_data = new AuthorizationData(new[] { unknownElementOptional });
}
#endregion
#region AP Request
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Create AP Request");
if (variant.HasFlag(CaseVariant.AUTHENTICATOR_WRONG_ENC_KEY))
{
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Use wrong key to encrypt the Authenticator");
kerberosClient.Context.Ticket.SessionKey = KerberosUtility.GenerateKey(kerberosClient.Context.Ticket.SessionKey);
}
KerberosApRequest request = new KerberosApRequest(
kerberosClient.Context.Pvno,
new APOptions(KerberosUtility.ConvertInt2Flags((int)ApOptions.MutualRequired)),
kerberosClient.Context.Ticket,
authenticator,
KeyUsageNumber.AP_REQ_Authenticator
);
#endregion
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Create GSS Token");
byte[] token = KerberosUtility.AddGssApiTokenHeader(request, OidPkt, GssToken);
Smb2FunctionalClientForKerbAuth smb2Client = new Smb2FunctionalClientForKerbAuth(TestConfig.Timeout, TestConfig, BaseTestSite);
smb2Client.ConnectToServer(TestConfig.UnderlyingTransport, TestConfig.SutComputerName, TestConfig.SutIPAddress);
#region Check the result
byte[] repToken;
uint status = DoSessionSetupWithGssToken(smb2Client, token, out repToken);
if (variant.HasFlag(CaseVariant.AUTHENTICATOR_CNAME_NOT_MATCH) || variant.HasFlag(CaseVariant.AUTHENTICATOR_CREALM_NOT_MATCH))
{
BaseTestSite.Assert.AreNotEqual(Smb2Status.STATUS_SUCCESS, status,
"Session Setup should fail because the cname or crealm in the authenticator does not match the same field in the Ticket");
if (TestConfig.IsWindowsPlatform)
{
KerberosKrbError krbError = kerberosClient.GetKrbErrorFromToken(repToken);
BaseTestSite.Assert.AreEqual(KRB_ERROR_CODE.KRB_AP_ERR_BADMATCH, krbError.ErrorCode,
"SMB Server should return {0}", KRB_ERROR_CODE.KRB_AP_ERR_BADMATCH);
}
smb2Client.Disconnect();
return;
}
if (variant.HasFlag(CaseVariant.AUTHENTICATOR_WRONG_ENC_KEY) || variant.HasFlag(CaseVariant.TICKET_WRONG_ENC_KEY))
{
BaseTestSite.Assert.AreNotEqual(Smb2Status.STATUS_SUCCESS, status,
"Session Setup should fail because Ticket or Authenticator cannot be correctly decrypted");
if (TestConfig.IsWindowsPlatform)
{
KerberosKrbError krbError = kerberosClient.GetKrbErrorFromToken(repToken);
BaseTestSite.Assert.AreEqual(KRB_ERROR_CODE.KRB_AP_ERR_MODIFIED, krbError.ErrorCode,
"SMB Server should return {0}", KRB_ERROR_CODE.KRB_AP_ERR_MODIFIED);
}
smb2Client.Disconnect();
return;
}
if (variant.HasFlag(CaseVariant.AUTHENTICATOR_EXCEED_TIME_SKEW))
{
BaseTestSite.Assert.AreNotEqual(Smb2Status.STATUS_SUCCESS, status,
"Session Setup should fail because the server time and the client time " +
"in the Authenticator differ by (1 hour) more than the allowable clock skew");
if (TestConfig.IsWindowsPlatform)
{
KerberosKrbError krbError = kerberosClient.GetKrbErrorFromToken(repToken);
BaseTestSite.Assert.AreEqual(KRB_ERROR_CODE.KRB_AP_ERR_SKEW, krbError.ErrorCode,
"SMB Server should return {0}", KRB_ERROR_CODE.KRB_AP_ERR_SKEW);
}
smb2Client.Disconnect();
return;
}
if (variant.HasFlag(CaseVariant.TICKET_WRONG_KVNO) ||
variant.HasFlag(CaseVariant.TICKET_WRONG_REALM) ||
variant.HasFlag(CaseVariant.TICKET_WRONG_SNAME))
{
BaseTestSite.Log.Add(LogEntryKind.Comment, "If decryption fails, server would try other keys");
}
if (variant.HasFlag(CaseVariant.TICKET_NOT_VALID))
{
BaseTestSite.Assert.AreNotEqual(Smb2Status.STATUS_SUCCESS, status,
"Session Setup should fail because the starttime (tomorrow) in the Ticket " +
"is later than the current time by more than the allowable clock skew");
if (TestConfig.IsWindowsPlatform)
{
KerberosKrbError krbError = kerberosClient.GetKrbErrorFromToken(repToken);
BaseTestSite.Assert.AreEqual(KRB_ERROR_CODE.KRB_AP_ERR_TKT_NYV, krbError.ErrorCode,
"SMB Server should return {0}", KRB_ERROR_CODE.KRB_AP_ERR_TKT_NYV);
}
smb2Client.Disconnect();
return;
}
if (variant.HasFlag(CaseVariant.TICKET_EXPIRED))
{
BaseTestSite.Assert.AreNotEqual(Smb2Status.STATUS_SUCCESS, status,
"Session Setup should fail because the current time is later than the endtime (yesterday)" +
" in the Ticket by more than the allowable clock skew");
if (TestConfig.IsWindowsPlatform)
{
KerberosKrbError krbError = kerberosClient.GetKrbErrorFromToken(repToken);
BaseTestSite.Assert.AreEqual(KRB_ERROR_CODE.KRB_AP_ERR_TKT_EXPIRED, krbError.ErrorCode,
"SMB Server should return {0}", KRB_ERROR_CODE.KRB_AP_ERR_TKT_EXPIRED);
}
smb2Client.Disconnect();
return;
}
if (variant.HasFlag(CaseVariant.AUTHDATA_UNKNOWN_TYPE_IN_TKT))
{
BaseTestSite.Assert.AreNotEqual(Smb2Status.STATUS_SUCCESS, status,
"Session Setup should fail because of the unknown AutherizationData in the ticket");
smb2Client.Disconnect();
return;
}
if (variant.HasFlag(CaseVariant.AUTHDATA_UNKNOWN_TYPE_IN_AUTHENTICATOR))
{
BaseTestSite.Log.Add(LogEntryKind.Comment,
"Unknown AuthorizationData in the Authenticator should not fail the request");
}
if (variant.HasFlag(CaseVariant.AUTHDATA_UNKNOWN_TYPE_IN_TKT_OPTIONAL) ||
variant.HasFlag(CaseVariant.AUTHDATA_UNKNOWN_TYPE_IN_AUTHENTICATOR_OPTIONAL))
{
BaseTestSite.Log.Add(LogEntryKind.Comment, "Unknown AuthorizationData in AD_IF_RELEVANT is optional. " +
"Server should not fail the request.");
}
KerberosApResponse apRep = kerberosClient.GetApResponseFromToken(repToken, GssToken);
// Get subkey from AP response, which used for signing in smb2
apRep.Decrypt(kerberosClient.Context.Ticket.SessionKey.keyvalue.ByteArrayValue);
smb2Client.SetSessionSigningAndEncryption(true, false, apRep.ApEncPart.subkey.keyvalue.ByteArrayValue);
string path = Smb2Utility.GetUncPath(TestConfig.SutComputerName, TestConfig.BasicFileShare);
AccessFile(smb2Client, path);
#endregion
smb2Client.LogOff();
smb2Client.Disconnect();
}
public void KerbAuth_Replay()
{
#region Get Service Ticket
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Initialize Kerberos Functional Client");
KerberosFunctionalClient kerberosClient = new KerberosFunctionalClient(
TestConfig.DomainName,
TestConfig.UserName,
TestConfig.UserPassword,
KerberosAccountType.User,
KDCIP,
KDCPort,
TransportType.TCP,
OidPkt,
BaseTestSite);
//Create and send AS request
const KdcOptions options = KdcOptions.FORWARDABLE | KdcOptions.CANONICALIZE | KdcOptions.RENEWABLE;
kerberosClient.SendAsRequest(options, null);
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Kerberos Functional Client expects Kerberos Error from KDC");
//Receive preauthentication required error
METHOD_DATA methodData;
KerberosKrbError krbError = kerberosClient.ExpectPreauthRequiredError(out methodData);
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Kerberos Functional Client sends AS request with PA-DATA set");
//Create sequence of PA data
string timeStamp = KerberosUtility.CurrentKerberosTime.Value;
PaEncTimeStamp paEncTimeStamp = new PaEncTimeStamp(timeStamp,
0,
kerberosClient.Context.SelectedEType,
kerberosClient.Context.CName.Password,
kerberosClient.Context.CName.Salt);
PaPacRequest paPacRequest = new PaPacRequest(true);
Asn1SequenceOf <PA_DATA> seqOfPaData = new Asn1SequenceOf <PA_DATA>(new[] { paEncTimeStamp.Data, paPacRequest.Data });
//Create and send AS request
kerberosClient.SendAsRequest(options, seqOfPaData);
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Kerberos Functional Client expects AS response from KDC");
KerberosAsResponse asResponse = kerberosClient.ExpectAsResponse();
BaseTestSite.Assert.IsNotNull(asResponse.Response.ticket, "AS response should contain a TGT.");
//Create and send TGS request
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Kerberos Functional Client sends TGS request to KDC");
kerberosClient.SendTgsRequest(servicePrincipalName, options);
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Kerberos Functional Client expects TGS response from KDC");
KerberosTgsResponse tgsResponse = kerberosClient.ExpectTgsResponse();
BaseTestSite.Assert.AreEqual(servicePrincipalName,
KerberosUtility.PrincipalName2String(tgsResponse.Response.ticket.sname),
"Service principal name in service ticket should match expected.");
#endregion
#region Create AP request
Ticket serviceTicket = kerberosClient.Context.Ticket.Ticket;
Realm crealm = serviceTicket.realm;
EncryptionKey subkey = KerberosUtility.GenerateKey(kerberosClient.Context.SessionKey);
PrincipalName cname = kerberosClient.Context.CName.Name;
Authenticator authenticator = CreateAuthenticator(cname, crealm, subkey);
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Create AP Request");
KerberosApRequest request = new KerberosApRequest(
kerberosClient.Context.Pvno,
new APOptions(KerberosUtility.ConvertInt2Flags((int)ApOptions.MutualRequired)),
kerberosClient.Context.Ticket,
authenticator,
KeyUsageNumber.AP_REQ_Authenticator
);
#endregion
#region Create GSS token and send session setup request
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Create GSS Token");
byte[] token = KerberosUtility.AddGssApiTokenHeader(request, OidPkt, GssToken);
Smb2FunctionalClientForKerbAuth smb2Client = new Smb2FunctionalClientForKerbAuth(TestConfig.Timeout, TestConfig, BaseTestSite);
smb2Client.ConnectToServer(TestConfig.UnderlyingTransport, TestConfig.SutComputerName, TestConfig.SutIPAddress);
byte[] repToken;
uint status = DoSessionSetupWithGssToken(smb2Client, token, out repToken);
KerberosApResponse apRep = kerberosClient.GetApResponseFromToken(repToken, GssToken);
// Get subkey from AP response, which used for signing in smb2
apRep.Decrypt(kerberosClient.Context.Ticket.SessionKey.keyvalue.ByteArrayValue);
smb2Client.SetSessionSigningAndEncryption(true, false, apRep.ApEncPart.subkey.keyvalue.ByteArrayValue);
#endregion
#region Second client
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Replay the request from another client");
Smb2FunctionalClientForKerbAuth smb2Client2 = new Smb2FunctionalClientForKerbAuth(TestConfig.Timeout, TestConfig, BaseTestSite);
smb2Client2.ConnectToServer(TestConfig.UnderlyingTransport, TestConfig.SutComputerName, TestConfig.SutIPAddress);
status = DoSessionSetupWithGssToken(smb2Client2, token, out repToken);
BaseTestSite.Assert.AreNotEqual(Smb2Status.STATUS_SUCCESS, status,
"Session Setup should fail because it uses a Replay of KRB_AP_REQ");
if (TestConfig.IsWindowsPlatform)
{
krbError = kerberosClient.GetKrbErrorFromToken(repToken);
BaseTestSite.Assert.AreEqual(KRB_ERROR_CODE.KRB_AP_ERR_REPEAT, krbError.ErrorCode,
"SMB Server should return {0}", KRB_ERROR_CODE.KRB_AP_ERR_REPEAT);
}
smb2Client2.Disconnect();
#endregion
string path = Smb2Utility.GetUncPath(TestConfig.SutComputerName, TestConfig.BasicFileShare);
AccessFile(smb2Client, path);
smb2Client.LogOff();
smb2Client.Disconnect();
}
/// <summary>
/// Convert uint to Asn.1 formatted ContextFlags
/// </summary>
/// <param name="attributes">Security context attributes</param>
/// <returns>the converted ContextFlags</returns>
public static ContextFlags ConvertUintToContextFlags(uint attributes)
{
ContextFlags options = new ContextFlags(KerberosUtility.ConvertInt2Flags((int)attributes));
return(options);
}
public KileTgsResponse CreateTgsResponse(
KileConnection kileConnection,
Asn1SequenceOf <PA_DATA> seqOfPaData,
EncTicketFlags encTicketFlags,
EncryptionKey ticketEncryptKey,
AuthorizationData ticketAuthorizationData)
{
KileServerContext serverContext = GetServerContextByKileConnection(kileConnection);
if (ticketEncryptKey == null)
{
throw new ArgumentNullException(nameof(ticketEncryptKey));
}
else
{
serverContext.TicketEncryptKey = ticketEncryptKey;
}
var response = new KileTgsResponse(serverContext);
// Construct a Ticket
var ticket = new Ticket();
ticket.tkt_vno = new Asn1Integer(ConstValue.KERBEROSV5);
ticket.realm = new Realm(domain);
ticket.sname = serverContext.SName;
// Set EncTicketPart
var encTicketPart = new EncTicketPart();
EncryptionType encryptionType = (EncryptionType)serverContext.EncryptType.Elements[0].Value;
encTicketPart.key = new EncryptionKey(new KerbInt32((int)encryptionType), new Asn1OctetString(GetEncryptionKeyByType(encryptionType)));
encTicketPart.flags = new TicketFlags(KerberosUtility.ConvertInt2Flags((int)encTicketFlags));
encTicketPart.crealm = serverContext.TgsTicket.crealm;
encTicketPart.cname = serverContext.TgsTicket.cname;
encTicketPart.transited = serverContext.TgsTicket.transited;
encTicketPart.authtime = KerberosUtility.CurrentKerberosTime;
encTicketPart.starttime = KerberosUtility.CurrentKerberosTime;
encTicketPart.endtime = serverContext.TgsTicket.endtime;
encTicketPart.renew_till = serverContext.TgsTicket.renew_till;
encTicketPart.caddr = serverContext.Addresses;
encTicketPart.authorization_data = ticketAuthorizationData;
response.TicketEncPart = encTicketPart;
// Set AS_REP
response.Response.pvno = new Asn1Integer(ConstValue.KERBEROSV5);
response.Response.msg_type = new Asn1Integer((int)MsgType.KRB_TGS_RESP);
response.Response.padata = seqOfPaData;
response.Response.crealm = serverContext.UserRealm;
response.Response.cname = serverContext.UserName;
response.Response.ticket = ticket;
// Set EncASRepPart
var encTGSRepPart = new EncTGSRepPart();
encTGSRepPart.key = encTicketPart.key;
var element = new LastReqElement(new KerbInt32(0), KerberosUtility.CurrentKerberosTime);
encTGSRepPart.last_req = new LastReq(new LastReqElement[] { element });
encTGSRepPart.nonce = serverContext.Nonce;
encTGSRepPart.flags = encTicketPart.flags;
encTGSRepPart.authtime = encTicketPart.authtime;
encTGSRepPart.starttime = encTicketPart.starttime;
encTGSRepPart.endtime = encTicketPart.endtime;
encTGSRepPart.renew_till = encTicketPart.renew_till;
encTGSRepPart.srealm = ticket.realm;
encTGSRepPart.sname = ticket.sname;
encTGSRepPart.caddr = encTicketPart.caddr;
response.EncPart = encTGSRepPart;
return(response);
}
public KileAsResponse CreateAsResponse(
KileConnection kileConnection,
KileAccountType accountType,
string password,
Asn1SequenceOf <PA_DATA> SeqofPaData,
EncTicketFlags encTicketFlags,
AuthorizationData ticketAuthorizationData)
{
KileServerContext serverContext = GetServerContextByKileConnection(kileConnection);
string cName = serverContext.UserName.name_string.Elements[0].Value;
string cRealm = serverContext.UserRealm.Value;
serverContext.Salt = GenerateSalt(cRealm, cName, accountType);
serverContext.TicketEncryptKey = new EncryptionKey(new KerbInt32((int)EncryptionType.RC4_HMAC),
new Asn1OctetString(GetEncryptionKeyByType(EncryptionType.RC4_HMAC)));
if (password == null)
{
throw new ArgumentNullException(nameof(password));
}
else
{
serverContext.Password = password;
}
KileAsResponse response = new KileAsResponse(serverContext);
// Construct a Ticket
var ticket = new Ticket();
ticket.tkt_vno = new Asn1Integer(ConstValue.KERBEROSV5);
ticket.realm = new Realm(domain);
ticket.sname = serverContext.SName;
// Set EncTicketPart
var encTicketPart = new EncTicketPart();
EncryptionType encryptionType = (EncryptionType)serverContext.EncryptType.Elements[0].Value;
encTicketPart.key = new EncryptionKey(new KerbInt32((int)encryptionType), new Asn1OctetString(GetEncryptionKeyByType(encryptionType)));
encTicketPart.flags = new TicketFlags(KerberosUtility.ConvertInt2Flags((int)encTicketFlags));
encTicketPart.crealm = serverContext.UserRealm;
encTicketPart.cname = serverContext.UserName;
encTicketPart.transited = new TransitedEncoding(new KerbInt32(4), null);
encTicketPart.authtime = KerberosUtility.CurrentKerberosTime;
encTicketPart.starttime = KerberosUtility.CurrentKerberosTime;
encTicketPart.endtime = serverContext.endTime;
encTicketPart.renew_till = serverContext.rtime ?? encTicketPart.endtime;
encTicketPart.caddr = serverContext.Addresses;
encTicketPart.authorization_data = ticketAuthorizationData;
response.TicketEncPart = encTicketPart;
// Set AS_REP
response.Response.pvno = new Asn1Integer(ConstValue.KERBEROSV5);
response.Response.msg_type = new Asn1Integer((int)MsgType.KRB_AS_RESP);
response.Response.padata = SeqofPaData;
response.Response.crealm = serverContext.UserRealm;
response.Response.cname = serverContext.UserName;
response.Response.ticket = ticket;
// Set EncASRepPart
var encASRepPart = new EncASRepPart();
encASRepPart.key = encTicketPart.key;
var element = new LastReqElement(new KerbInt32(0), KerberosUtility.CurrentKerberosTime);
encASRepPart.last_req = new LastReq(new LastReqElement[] { element });
encASRepPart.nonce = serverContext.Nonce;
encASRepPart.flags = encTicketPart.flags;
encASRepPart.authtime = encTicketPart.authtime;
encASRepPart.starttime = encTicketPart.starttime;
encASRepPart.endtime = encTicketPart.endtime;
encASRepPart.renew_till = encTicketPart.renew_till;
encASRepPart.srealm = ticket.realm;
encASRepPart.sname = ticket.sname;
encASRepPart.caddr = encTicketPart.caddr;
response.EncPart = encASRepPart;
return(response);
}