private EncTicketPart RetrieveAndDecryptServiceTicket(KerberosFunctionalClient kerberosClient, out EncryptionKey serviceKey)
{
//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.");
BaseTestSite.Log.Add(LogEntryKind.TestStep, "Decrypt SMB2 Service Ticket");
serviceKey = keyManager.QueryKey(servicePrincipalName, TestConfig.DomainName, kerberosClient.Context.SelectedEType);
tgsResponse.DecryptTicket(serviceKey);
return(tgsResponse.TicketEncPart);
}
private void CrossRealm_Smb2_AccessFile(string localRealmName, string trustuedRealmName, User localUser, Computer localKDC, Computer trustedKDC, TransportType transportType, FileServer fileserverInTrustedRealm, string filePath, string fileName, bool expectAccessDeny)
{
base.Logging();
client = new KerberosTestClient(localRealmName,
localUser.Username,
localUser.Password,
KerberosAccountType.User,
localKDC.IPAddress,
localKDC.Port,
transportType,
testConfig.SupportedOid);
//Create and send AS request
KdcOptions options = KdcOptions.FORWARDABLE | KdcOptions.CANONICALIZE | KdcOptions.RENEWABLE;
client.SendAsRequest(options, null);
//Recieve preauthentication required error
METHOD_DATA methodData;
KerberosKrbError krbError = client.ExpectPreauthRequiredError(out methodData);
//Create sequence of PA data
string timeStamp = KerberosUtility.CurrentKerberosTime.Value;
PaEncTimeStamp paEncTimeStamp = new PaEncTimeStamp(timeStamp,
0,
this.client.Context.SelectedEType,
this.client.Context.CName.Password,
this.client.Context.CName.Salt);
PaPacRequest paPacRequest = new PaPacRequest(true);
Asn1SequenceOf <PA_DATA> seqOfPaData = new Asn1SequenceOf <PA_DATA>(new PA_DATA[] { paEncTimeStamp.Data, paPacRequest.Data });
//Create and send AS request
client.SendAsRequest(options, seqOfPaData);
KerberosAsResponse asResponse = client.ExpectAsResponse();
//Create and send TGS request
if (this.testConfig.TrustType == Adapter.TrustType.Forest)
{
client.SendTgsRequest(fileserverInTrustedRealm.Smb2ServiceName, options);
}
else if (this.testConfig.TrustType == Adapter.TrustType.Realm)
{
client.SendTgsRequest(trustedKDC.DefaultServiceName, options);
}
BaseTestSite.Log.Add(LogEntryKind.Comment, "Create and send TGS request");
KerberosTgsResponse tgsResponse = client.ExpectTgsResponse();
BaseTestSite.Log.Add(LogEntryKind.Comment, "Receive a referral TGS response.");
BaseTestSite.Assert.AreEqual(trustedKDC.DefaultServiceName,
KerberosUtility.PrincipalName2String(tgsResponse.Response.ticket.sname),
"The service principal name in referral ticket should match expected.");
BaseTestSite.Assert.AreEqual(localRealmName.ToLower(),
tgsResponse.Response.ticket.realm.Value.ToLower(),
"The realm name in referral ticket should match expected.");
//Change realm
client.ChangeRealm(trustuedRealmName,
trustedKDC.IPAddress,
trustedKDC.Port,
this.testConfig.TransportType);
//Create and send referral TGS request
client.SendTgsRequest(fileserverInTrustedRealm.Smb2ServiceName, options);
KerberosTgsResponse refTgsResponse = client.ExpectTgsResponse();
BaseTestSite.Assert.AreEqual(fileserverInTrustedRealm.Smb2ServiceName,
KerberosUtility.PrincipalName2String(refTgsResponse.Response.ticket.sname),
"The service principal name in service ticket should match expected.");
BaseTestSite.Assert.AreEqual(trustuedRealmName.ToLower(),
refTgsResponse.Response.ticket.realm.Value.ToLower(),
"The realm name in service ticket should match expected.");
EncryptionKey key = testConfig.QueryKey(fileserverInTrustedRealm.Smb2ServiceName, client.Context.Realm.ToString(), client.Context.SelectedEType);
refTgsResponse.DecryptTicket(key);
BaseTestSite.Assert.AreEqual(localRealmName.ToLower(),
refTgsResponse.TicketEncPart.crealm.Value.ToLower(),
"Realm name in service ticket encrypted part should match expected.");
BaseTestSite.Assert.AreEqual(localUser.Username.ToLower(),
KerberosUtility.PrincipalName2String(refTgsResponse.TicketEncPart.cname).ToLower(),
"User name in service ticket encrypted part should match expected.");
AuthorizationData data = null;
EncryptionKey subkey = KerberosUtility.GenerateKey(client.Context.SessionKey);
byte[] token = client.CreateGssApiToken(ApOptions.MutualRequired,
data,
subkey,
ChecksumFlags.GSS_C_MUTUAL_FLAG | ChecksumFlags.GSS_C_INTEG_FLAG);
BaseTestSite.Log.Add(LogEntryKind.Comment, "Logon to fileserver and Access File.");
AccessFile(filePath, fileName, fileserverInTrustedRealm, token, refTgsResponse.EncPart.key, expectAccessDeny);
}
private void DAC_Smb2_AccessFile(string RealmName, User user, Computer kdc, TransportType transportType, FileServer fileserver, string filePath, string fileName, bool expectAccessDeny)
{
base.Logging();
client = new KerberosTestClient(RealmName,
user.Username,
user.Password,
KerberosAccountType.User,
kdc.IPAddress,
kdc.Port,
transportType,
testConfig.SupportedOid);
//Create and send AS request
KdcOptions options = KdcOptions.FORWARDABLE | KdcOptions.CANONICALIZE | KdcOptions.RENEWABLE;
client.SendAsRequest(options, null);
//Recieve preauthentication required error
METHOD_DATA methodData;
KerberosKrbError krbError = client.ExpectPreauthRequiredError(out methodData);
//Create sequence of PA data
string timeStamp = KerberosUtility.CurrentKerberosTime.Value;
PaEncTimeStamp paEncTimeStamp = new PaEncTimeStamp(timeStamp,
0,
client.Context.SelectedEType,
this.client.Context.CName.Password,
this.client.Context.CName.Salt);
PaPacRequest paPacRequest = new PaPacRequest(true);
Asn1SequenceOf <PA_DATA> seqOfPaData = new Asn1SequenceOf <PA_DATA>(new PA_DATA[] { paEncTimeStamp.Data, paPacRequest.Data });
//Create and send AS request
client.SendAsRequest(options, seqOfPaData);
KerberosAsResponse asResponse = client.ExpectAsResponse();
BaseTestSite.Assert.IsNotNull(asResponse.Response.ticket, "AS response should contain a TGT.");
//Create and send TGS request
client.SendTgsRequest(fileserver.Smb2ServiceName, options);
KerberosTgsResponse tgsResponse = client.ExpectTgsResponse();
BaseTestSite.Assert.AreEqual(fileserver.Smb2ServiceName,
KerberosUtility.PrincipalName2String(tgsResponse.Response.ticket.sname),
"Service principal name in service ticket should match expected.");
EncryptionKey key = testConfig.QueryKey(fileserver.Smb2ServiceName, client.Context.Realm.ToString(), client.Context.SelectedEType);
tgsResponse.DecryptTicket(key);
BaseTestSite.Assert.AreEqual(RealmName.ToLower(),
tgsResponse.TicketEncPart.crealm.Value.ToLower(),
"Realm name in service ticket encrypted part should match expected.");
BaseTestSite.Assert.AreEqual(user.Username.ToLower(),
KerberosUtility.PrincipalName2String(tgsResponse.TicketEncPart.cname).ToLower(),
"User name in service ticket encrypted part should match expected.");
//Assert authorization data
if (this.testConfig.IsKileImplemented)
{
BaseTestSite.Assert.IsNotNull(tgsResponse.TicketEncPart.authorization_data, "The ticket contains Authorization data.");
AdWin2KPac adWin2kPac = FindOneInAuthData <AdWin2KPac>(tgsResponse.TicketEncPart.authorization_data.Elements);
BaseTestSite.Assert.IsNotNull(adWin2kPac, "The Authorization data contains AdWin2KPac.");
}
AuthorizationData data = null;
EncryptionKey subkey = KerberosUtility.GenerateKey(client.Context.SessionKey);
byte[] token = client.CreateGssApiToken(ApOptions.MutualRequired,
data,
subkey,
ChecksumFlags.GSS_C_MUTUAL_FLAG | ChecksumFlags.GSS_C_INTEG_FLAG);
BaseTestSite.Log.Add(LogEntryKind.Comment, "Logon to fileserver and Access File.");
AccessFile(filePath, fileName, fileserver, token, tgsResponse.EncPart.key, expectAccessDeny);
}
private void claimsTest_Kerberos_CrossRealm_ADSource_User_Only(bool ctaFromConfig)
{
client = new KerberosTestClient(this.testConfig.LocalRealm.RealmName,
this.testConfig.LocalRealm.User[2].Username,
this.testConfig.LocalRealm.User[2].Password,
KerberosAccountType.User,
testConfig.LocalRealm.KDC[0].IPAddress,
testConfig.LocalRealm.KDC[0].Port,
testConfig.TransportType,
testConfig.SupportedOid);
//Create and send AS request
KdcOptions options = KdcOptions.FORWARDABLE | KdcOptions.CANONICALIZE | KdcOptions.RENEWABLE;
client.SendAsRequest(options, null);
//Recieve preauthentication required error
METHOD_DATA methodData;
KerberosKrbError krbError = client.ExpectPreauthRequiredError(out methodData);
//Create sequence of PA data
string timeStamp = KerberosUtility.CurrentKerberosTime.Value;
PaEncTimeStamp paEncTimeStamp = new PaEncTimeStamp(timeStamp,
0,
this.client.Context.SelectedEType,
this.client.Context.CName.Password,
this.client.Context.CName.Salt);
PaPacRequest paPacRequest = new PaPacRequest(true);
PaPacOptions paPacOptions = new PaPacOptions(PacOptions.Claims | PacOptions.ForwardToFullDc);
Asn1SequenceOf <PA_DATA> seqOfPaData = new Asn1SequenceOf <PA_DATA>(new PA_DATA[] { paEncTimeStamp.Data, paPacRequest.Data, paPacOptions.Data });
//Create and send AS request
client.SendAsRequest(options, seqOfPaData);
KerberosAsResponse asResponse = client.ExpectAsResponse();
Asn1SequenceOf <PA_DATA> seqOfPaData2 = new Asn1SequenceOf <PA_DATA>(new PA_DATA[] { paEncTimeStamp.Data, paPacRequest.Data });
//Create and send TGS request
client.SendTgsRequest(this.testConfig.TrustedRealm.KDC[0].DefaultServiceName, options, seqOfPaData2);
BaseTestSite.Log.Add(LogEntryKind.Comment, "Create and send TGS request");
KerberosTgsResponse tgsResponse = client.ExpectTgsResponse();
BaseTestSite.Log.Add(LogEntryKind.Comment, "Receive a referral TGS response.");
BaseTestSite.Assert.AreEqual(this.testConfig.TrustedRealm.KDC[0].DefaultServiceName,
KerberosUtility.PrincipalName2String(tgsResponse.Response.ticket.sname),
"The service principal name in referral ticket should match expected.");
BaseTestSite.Assert.AreEqual(this.testConfig.LocalRealm.RealmName.ToLower(),
tgsResponse.Response.ticket.realm.Value.ToLower(),
"The realm name in referral ticket should match expected.");
EncryptionKey key = testConfig.QueryKey(this.testConfig.TrustedRealm.KDC[0].DefaultServiceName + "@" + this.testConfig.LocalRealm.RealmName, client.Context.Realm.ToString(), client.Context.SelectedEType);
tgsResponse.DecryptTicket(key);
CLAIMS_SET claims = new CLAIMS_SET();
AdWin2KPac adWin2kPac = FindOneInAuthData <AdWin2KPac>(tgsResponse.TicketEncPart.authorization_data.Elements);
bool foundClaims = false;
foreach (PacInfoBuffer buf in adWin2kPac.Pac.PacInfoBuffers)
{
if (buf.GetType() == typeof(ClientClaimsInfo))
{
claims = ((ClientClaimsInfo)buf).NativeClaimSet;
foundClaims = true;
}
}
BaseTestSite.Assert.IsTrue(foundClaims, "Found claims in referral TGS Ticket");
foundClaims = false;
#region genertaed transformed claims
Dictionary <string, string> expectedClaims = new Dictionary <string, string>();
if (!ctaFromConfig)
{
ClaimTransformer transformer = new ClaimTransformer(this.testConfig.TrustedRealm.KDC[0].IPAddress, this.testConfig.TrustedRealm.RealmName, this.testConfig.TrustedRealm.Admin.Username, this.testConfig.TrustedRealm.Admin.Password);
List <CLAIMS_ARRAY> transformed = null;
BaseTestSite.Assert.AreEqual <Win32ErrorCode_32>(Win32ErrorCode_32.ERROR_SUCCESS, transformer.TransformClaimsOnTrustTraversal(claims.ClaimsArrays, this.testConfig.LocalRealm.RealmName, true, out transformed), "should successfully transform claims");
foreach (CLAIMS_ARRAY array in transformed)
{
foreach (CLAIM_ENTRY entry in array.ClaimEntries)
{
string id = entry.Id;
string value = null;
switch (entry.Type)
{
case CLAIM_TYPE.CLAIM_TYPE_BOOLEAN:
value = entry.Values.Struct4.BooleanValues[0].ToString();
break;
case CLAIM_TYPE.CLAIM_TYPE_INT64:
value = entry.Values.Struct1.Int64Values[0].ToString();
break;
case CLAIM_TYPE.CLAIM_TYPE_STRING:
value = entry.Values.Struct3.StringValues[0].ToString();
break;
case CLAIM_TYPE.CLAIM_TYPE_UINT64:
value = entry.Values.Struct2.Uint64Values[0].ToString();
break;
default:
BaseTestSite.Assert.Fail("Found invalid claim type during transform, value:" + (int)entry.Type);
break;
}
expectedClaims.Add(id.ToLower(), value.ToLower());
}
}
}
else
{
string[] tmp = this.testConfig.LocalRealm.User[2].TransformedClaims.ToLower().Split(new string[] { ";" }, StringSplitOptions.RemoveEmptyEntries);
BaseTestSite.Assert.IsTrue(tmp != null && tmp.Length % 2 == 0, "Claim.Crossforest.TransformedClaims in PTFConfig should be valid and not empty");
for (int i = 0; i < tmp.Length; i += 2)
{
expectedClaims.Add(tmp[i], tmp[i + 1]);
}
}
#endregion
//Change realm
client.ChangeRealm(this.testConfig.TrustedRealm.RealmName,
this.testConfig.TrustedRealm.KDC[0].IPAddress,
this.testConfig.TrustedRealm.KDC[0].Port,
this.testConfig.TransportType);
//Create and send referal TGS request
client.SendTgsRequest(this.testConfig.TrustedRealm.FileServer[0].Smb2ServiceName, options);
KerberosTgsResponse refTgsResponse = client.ExpectTgsResponse();
BaseTestSite.Assert.AreEqual(this.testConfig.TrustedRealm.FileServer[0].Smb2ServiceName,
KerberosUtility.PrincipalName2String(refTgsResponse.Response.ticket.sname),
"The service principal name in service ticket should match expected.");
BaseTestSite.Assert.AreEqual(this.testConfig.TrustedRealm.RealmName.ToLower(),
refTgsResponse.Response.ticket.realm.Value.ToLower(),
"The realm name in service ticket should match expected.");
key = testConfig.QueryKey(this.testConfig.TrustedRealm.FileServer[0].Smb2ServiceName, client.Context.Realm.ToString(), client.Context.SelectedEType);
refTgsResponse.DecryptTicket(key);
BaseTestSite.Assert.AreEqual(this.testConfig.LocalRealm.RealmName.ToLower(),
refTgsResponse.TicketEncPart.crealm.Value.ToLower(),
"Realm name in service ticket encrypted part should match expected.");
BaseTestSite.Assert.AreEqual(this.testConfig.LocalRealm.User[2].Username,
KerberosUtility.PrincipalName2String(refTgsResponse.TicketEncPart.cname).ToLower(),
"User name in service ticket encrypted part should match expected.");
adWin2kPac = FindOneInAuthData <AdWin2KPac>(refTgsResponse.TicketEncPart.authorization_data.Elements);
foreach (PacInfoBuffer buf in adWin2kPac.Pac.PacInfoBuffers)
{
if (buf.GetType() == typeof(ClientClaimsInfo))
{
foundClaims = true;
claims = ((ClientClaimsInfo)buf).NativeClaimSet;
}
}
int errors = 0;
BaseTestSite.Assert.IsTrue(foundClaims, "Found claims in reference TGS Ticket");
for (int i = 0; i < claims.ClaimsArrays[0].ClaimEntries.Length; i++)
{
string claimvalue = null;
if (!expectedClaims.TryGetValue(claims.ClaimsArrays[0].ClaimEntries[i].Id.ToLower(), out claimvalue))
{
errors++;
BaseTestSite.Log.Add(LogEntryKind.CheckFailed, "Found unexpected claim with id: " + claims.ClaimsArrays[0].ClaimEntries[i].Id + " after transform");
}
else
{
if (claimvalue != claims.ClaimsArrays[0].ClaimEntries[i].Values.Struct3.StringValues[0].ToLower())
{
errors++;
BaseTestSite.Log.Add(
LogEntryKind.CheckFailed,
"Value of claim \"" + claims.ClaimsArrays[0].ClaimEntries[i].Id + "\" is not expected, expected: " + claimvalue + " ,actual: " + claims.ClaimsArrays[0].ClaimEntries[i].Values.Struct3.StringValues[0]);
}
expectedClaims.Remove(claims.ClaimsArrays[0].ClaimEntries[i].Id);
}
}
BaseTestSite.Assert.AreEqual(expectedClaims.Count, claims.ClaimsArrays[0].ClaimEntries.Count(), "Claims count should be equal.");
BaseTestSite.Assert.AreEqual <int>(0, errors, "Expect no error should be found when compare claims from reference TGS ticket");
}
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();
}