private KerberosApRequest CreateApRequest(APOptions option, KerberosTicket ticket, EncryptionKey subKey, AuthorizationData data, KeyUsageNumber keyUsageNumber, ChecksumType checksumType, byte[] checksumBody)
{
Authenticator authenticator = CreateAuthenticator(ticket, data, subKey, checksumType, checksumBody);
KerberosApRequest apRequest = new KerberosApRequest(Context.Pvno, option, ticket, authenticator, keyUsageNumber);
return(apRequest);
}
/// <summary>
/// Create AP request and encode to GSSAPI token
/// </summary>
/// <param name="apOptions">AP options</param>
/// <param name="data">Authorization data</param>
/// <param name="subkey">Sub-session key in authenticator</param>
/// <param name="checksumFlags">Checksum flags</param>
/// <returns></returns>
private byte[] CreateGssApiToken(ApOptions apOptions, AuthorizationData data, EncryptionKey subkey, ChecksumFlags checksumFlags, KerberosConstValue.GSSToken gssToken = KerberosConstValue.GSSToken.GSSSPNG)
{
APOptions options = new APOptions(KerberosUtility.ConvertInt2Flags((int)apOptions));
Authenticator authenticator = CreateAuthenticator(Context.Ticket, data, subkey, checksumFlags);
this.ApRequestAuthenticator = authenticator;
KerberosApRequest request = new KerberosApRequest(
Context.Pvno,
options,
Context.Ticket,
authenticator,
KeyUsageNumber.AP_REQ_Authenticator
);
this.client.UpdateContext(request);
if ((this.Context.ChecksumFlag & ChecksumFlags.GSS_C_DCE_STYLE) == ChecksumFlags.GSS_C_DCE_STYLE)
{
return(request.ToBytes());
}
else
{
return(KerberosUtility.AddGssApiTokenHeader(request, this.client.OidPkt, gssToken));
}
}
private PA_DATA CreatePaTgsReqest(ChecksumType checksumType, byte[] checksumBody, AuthorizationData data)
{
APOptions option = new APOptions(KerberosUtility.ConvertInt2Flags((int)ApOptions.None));
EncryptionKey key = Context.SessionKey;
KerberosApRequest apRequest = CreateApRequest(option, Context.Ticket, null, data, KeyUsageNumber.TG_REQ_PA_TGS_REQ_padataOR_AP_REQ_Authenticator, checksumType, checksumBody);
PaTgsReq paTgsReq = new PaTgsReq(apRequest.Request);
return(paTgsReq.Data);
}
public static byte[] AddGssApiTokenHeader(KerberosApRequest request,
KerberosConstValue.OidPkt oidPkt = KerberosConstValue.OidPkt.KerberosToken,
KerberosConstValue.GSSToken gssToken = KerberosConstValue.GSSToken.GSSSPNG)
{
byte[] encoded = request.ToBytes();
byte[] token = KerberosUtility.AddGssApiTokenHeader(ArrayUtility.ConcatenateArrays(
BitConverter.GetBytes(KerberosUtility.ConvertEndian((ushort)TOK_ID.KRB_AP_REQ)), encoded), oidPkt, gssToken);
return(token);
}
/// <summary>
/// Create an instance.
/// </summary>
public KpasswordRequest(KerberosTicket ticket, Authenticator authenticator, string newPwd, bool isAuthErrorRequired = false)
{
//Create KerberosApRequest
long pvno = KerberosConstValue.KERBEROSV5;
APOptions option = new APOptions(KerberosUtility.ConvertInt2Flags((int)ApOptions.None));
KerberosApRequest ap_req = new KerberosApRequest(pvno, option, ticket, authenticator, KeyUsageNumber.AP_REQ_Authenticator);
//Create KRB_PRIV
ChangePasswdData pwd_data = new ChangePasswdData(new Asn1OctetString(newPwd), null, null);
priv_enc_part = new EncKrbPrivPart();
priv_enc_part.user_data = pwd_data.newpasswd;
priv_enc_part.usec = authenticator.cusec;
priv_enc_part.seq_number = authenticator.seq_number;
priv_enc_part.s_address = new HostAddress(new KerbInt32((int)AddressType.NetBios), new Asn1OctetString(Encoding.ASCII.GetBytes(System.Net.Dns.GetHostName())));
Asn1BerEncodingBuffer asnBuffPriv = new Asn1BerEncodingBuffer();
priv_enc_part.BerEncode(asnBuffPriv, true);
byte[] encAsnEncodedPriv = null;
if (!isAuthErrorRequired)
{
encAsnEncodedPriv = KerberosUtility.Encrypt((EncryptionType)authenticator.subkey.keytype.Value,
authenticator.subkey.keyvalue.ByteArrayValue,
asnBuffPriv.Data,
(int)KeyUsageNumber.KRB_PRIV_EncPart);
}
else
{
encAsnEncodedPriv = KerberosUtility.Encrypt((EncryptionType)authenticator.subkey.keytype.Value,
authenticator.subkey.keyvalue.ByteArrayValue,
asnBuffPriv.Data,
(int)KeyUsageNumber.None);
}
var encrypted = new EncryptedData();
encrypted.etype = new KerbInt32(authenticator.subkey.keytype.Value);
encrypted.cipher = new Asn1OctetString(encAsnEncodedPriv);
KRB_PRIV krb_priv = new KRB_PRIV(new Asn1Integer(pvno), new Asn1Integer((long)MsgType.KRB_PRIV), encrypted);
//Calculate the msg_length and ap_req_length
krb_priv.BerEncode(privBuffer, true);
ap_req.Request.BerEncode(apBuffer, true);
version = 0x0001;
ap_req_length = (ushort)apBuffer.Data.Length;
msg_length = (ushort)(ap_req_length + privBuffer.Data.Length + 3 * sizeof(ushort));
//Convert Endian
version = KerberosUtility.ConvertEndian(version);
ap_req_length = KerberosUtility.ConvertEndian(ap_req_length);
msg_length = KerberosUtility.ConvertEndian(msg_length);
}
/// <summary>
/// Create an instance.
/// </summary>
public KpasswordRequest(KerberosTicket ticket, Authenticator authenticator, string newPwd, bool isAuthErrorRequired = false)
{
//Create KerberosApRequest
long pvno = KerberosConstValue.KERBEROSV5;
APOptions option = new APOptions(KerberosUtility.ConvertInt2Flags((int)ApOptions.None));
KerberosApRequest ap_req = new KerberosApRequest(pvno, option, ticket, authenticator, KeyUsageNumber.AP_REQ_Authenticator);
//Create KRB_PRIV
ChangePasswdData pwd_data = new ChangePasswdData(new Asn1OctetString(newPwd), null, null);
priv_enc_part = new EncKrbPrivPart();
priv_enc_part.user_data = pwd_data.newpasswd;
priv_enc_part.usec = authenticator.cusec;
priv_enc_part.seq_number = authenticator.seq_number;
priv_enc_part.s_address = new HostAddress(new KerbInt32((int)AddressType.NetBios), new Asn1OctetString(Encoding.ASCII.GetBytes(System.Net.Dns.GetHostName())));
Asn1BerEncodingBuffer asnBuffPriv = new Asn1BerEncodingBuffer();
priv_enc_part.BerEncode(asnBuffPriv, true);
byte[] encAsnEncodedPriv = null;
if (!isAuthErrorRequired)
{
encAsnEncodedPriv = KerberosUtility.Encrypt((EncryptionType)authenticator.subkey.keytype.Value,
authenticator.subkey.keyvalue.ByteArrayValue,
asnBuffPriv.Data,
(int)KeyUsageNumber.KRB_PRIV_EncPart);
}
else
{
encAsnEncodedPriv = KerberosUtility.Encrypt((EncryptionType)authenticator.subkey.keytype.Value,
authenticator.subkey.keyvalue.ByteArrayValue,
asnBuffPriv.Data,
(int)KeyUsageNumber.None);
}
var encrypted = new EncryptedData();
encrypted.etype = new KerbInt32(authenticator.subkey.keytype.Value);
encrypted.cipher = new Asn1OctetString(encAsnEncodedPriv);
KRB_PRIV krb_priv = new KRB_PRIV(new Asn1Integer(pvno), new Asn1Integer((long)MsgType.KRB_PRIV), encrypted);
//Calculate the msg_length and ap_req_length
krb_priv.BerEncode(privBuffer, true);
ap_req.Request.BerEncode(apBuffer, true);
version = 0x0001;
ap_req_length = (ushort)apBuffer.Data.Length;
msg_length = (ushort)(ap_req_length + privBuffer.Data.Length + 3 * sizeof(ushort));
//Convert Endian
version = KerberosUtility.ConvertEndian(version);
ap_req_length = KerberosUtility.ConvertEndian(ap_req_length);
msg_length = KerberosUtility.ConvertEndian(msg_length);
}
/// <summary>
/// Updated context based on Kerberos pdu
/// </summary>
/// <param name="pdu">Kerberos pdu</param>
public override void UpdateContext(KerberosPdu pdu)
{
if (pdu is KerberosAsRequest)
{
KerberosAsRequest request = (KerberosAsRequest)pdu;
UpdateContext(request);
}
if (pdu is KerberosKrbError)
{
KerberosKrbError error = (KerberosKrbError)pdu;
UpdateContext(error);
}
if (pdu is KerberosAsResponse)
{
KerberosAsResponse response = (KerberosAsResponse)pdu;
UpdateContext(response);
}
if (pdu is KerberosTgsRequest)
{
KerberosTgsRequest request = pdu as KerberosTgsRequest;
UpdateContext(request);
}
if (pdu is KerberosTgsResponse)
{
KerberosTgsResponse response = pdu as KerberosTgsResponse;
UpdateContext(response);
}
if (pdu is KerberosApRequest)
{
KerberosApRequest request = pdu as KerberosApRequest;
UpdateContext(request);
}
if (pdu is KerberosApResponse)
{
KerberosApResponse response = pdu as KerberosApResponse;
UpdateContext(response);
}
this.expectedPduType = null;
}
private void UpdateContext(KerberosApRequest request)
{
this.Context.Time = request.Authenticator.ctime;
this.Context.Cusec = request.Authenticator.cusec;
if (request.Authenticator.cksum != null)
{
int flag = BitConverter.ToInt32(request.Authenticator.cksum.checksum.ByteArrayValue,
KerberosConstValue.AUTHENTICATOR_CHECKSUM_LENGTH + sizeof(ChecksumFlags));
this.Context.ChecksumFlag = (ChecksumFlags)flag;
}
this.Context.ApSubKey = request.Authenticator.subkey;
if (request.Authenticator.seq_number != null)
{
this.Context.currentLocalSequenceNumber = (uint)request.Authenticator.seq_number.Value;
this.Context.CurrentRemoteSequenceNumber = this.Context.currentLocalSequenceNumber;
}
}
public KpasswordRequest()
: base()
{
ap_req = new KerberosApRequest();
krb_priv = new KRB_PRIV();
}
private KerberosApRequest CreateApRequest(APOptions option, KerberosTicket ticket, EncryptionKey subkey, AuthorizationData data, KeyUsageNumber keyUsageNumber, ChecksumType checksumType, byte[] checksumBody)
{
Authenticator authenticator = CreateAuthenticator(ticket, data, subkey, checksumType, checksumBody);
KerberosApRequest apReq = new KerberosApRequest(Context.Pvno, option, ticket, authenticator, keyUsageNumber);
return apReq;
}
/// <summary>
/// Create and send FAST TGS request
/// </summary>
/// <param name="sName">Service principal name</param>
/// <param name="kdcOptions">KDC options</param>
/// <param name="innerSeqPaData">A sequence of preauthentication data in FAST request</param>
/// <param name="outerSeqPaData">A sequence of preauthentication data</param>
/// <param name="subKey">Sub-session key for authenticator in FAST armor field</param>
/// <param name="fastOptions">FAST options</param>
/// <param name="apOptions">AP options in FAST armor field</param>
/// <param name="data">Authorization data</param>
public void SendTgsRequestWithExplicitFast(
string sName,
KdcOptions kdcOptions,
Asn1SequenceOf<PA_DATA> innerSeqPaData,
Asn1SequenceOf<PA_DATA> outerSeqPaData,
EncryptionKey subKey,
FastOptions fastOptions,
ApOptions apOptions,
AuthorizationData data = null)
{
Context.Subkey = subKey;
Context.ReplyKey = subKey;
string domain = this.Context.Realm.Value;
PrincipalName sname = new PrincipalName(new KerbInt32((int)PrincipalType.NT_SRV_INST),
KerberosUtility.String2SeqKerbString(sName.Split('/')));
KDC_REQ_BODY kdcReqBody = CreateKdcRequestBody(kdcOptions, sname, data);
Asn1BerEncodingBuffer bodyBuffer = new Asn1BerEncodingBuffer();
kdcReqBody.BerEncode(bodyBuffer);
//Create PA-TGS-REQ
APOptions option = new APOptions(KerberosUtility.ConvertInt2Flags((int)ApOptions.None));
ChecksumType checksumType = KerberosUtility.GetChecksumType(Context.SelectedEType);
KerberosApRequest apRequest = CreateApRequest(
option,
Context.Ticket,
subKey,
data,
KeyUsageNumber.TG_REQ_PA_TGS_REQ_padataOR_AP_REQ_Authenticator,
checksumType,
bodyBuffer.Data);
PaTgsReq paTgsReq = new PaTgsReq(apRequest.Request);
Asn1SequenceOf<PA_DATA> tempPaData = null;
if (outerSeqPaData == null || outerSeqPaData.Elements == null || outerSeqPaData.Elements.Length == 0)
{
tempPaData = new Asn1SequenceOf<PA_DATA>(new PA_DATA[] { paTgsReq.Data });
}
else
{
tempPaData.Elements = new PA_DATA[outerSeqPaData.Elements.Length + 1];
Array.Copy(outerSeqPaData.Elements, tempPaData.Elements, outerSeqPaData.Elements.Length);
tempPaData.Elements[outerSeqPaData.Elements.Length] = paTgsReq.Data;
}
//Create explicit FAST armor
EncryptionKey explicitSubkey = KerberosUtility.MakeKey(
Context.SelectedEType,
"Password04!",
"This is a salt");
Authenticator plaintextAuthenticator = CreateAuthenticator(Context.ArmorTicket, null, explicitSubkey);
KerberosApRequest apReq = new KerberosApRequest(Context.Pvno,
new APOptions(KerberosUtility.ConvertInt2Flags((int)apOptions)),
Context.ArmorTicket,
plaintextAuthenticator,
KeyUsageNumber.AP_REQ_Authenticator);
FastArmorApRequest explicitArmor = new FastArmorApRequest(apReq.Request);
//Create armor key
var armorKey = GetArmorKey(Context.ArmorSessionKey, subKey, explicitSubkey);
Context.FastArmorkey = armorKey;
//Create PA-FX-FAST
var pafxfast = CreateTgsPaFxFast(armorKey, Context.ArmorTicket, fastOptions, apOptions, tempPaData, sName, paTgsReq.Data.padata_value.ByteArrayValue, explicitArmor);
PA_DATA[] elements;
if (outerSeqPaData != null && outerSeqPaData.Elements.Length > 0)
{
elements = new PA_DATA[outerSeqPaData.Elements.Length + 1];
Array.Copy(outerSeqPaData.Elements, elements, outerSeqPaData.Elements.Length);
elements[outerSeqPaData.Elements.Length] = pafxfast.Data;
elements[outerSeqPaData.Elements.Length + 1] = paTgsReq.Data;
}
else
{
elements = new PA_DATA[] { pafxfast.Data, paTgsReq.Data };
}
Asn1SequenceOf<PA_DATA> seqPaData = new Asn1SequenceOf<PA_DATA>();
KerberosTgsRequest tgsRequest = new KerberosTgsRequest(KerberosConstValue.KERBEROSV5, kdcReqBody, new Asn1SequenceOf<PA_DATA>(elements), Context.TransportType);
this.SendPdu(tgsRequest);
this.testSite.Log.Add(LogEntryKind.Debug, "Send FAST TGS request.");
}
/// <summary>
/// Create AP request and encode to GSSAPI token
/// </summary>
/// <param name="apOptions">AP options</param>
/// <param name="data">Authorization data</param>
/// <param name="subkey">Sub-session key in authenticator</param>
/// <param name="checksumFlags">Checksum flags</param>
/// <returns></returns>
public byte[] CreateGssApiToken(ApOptions apOptions, AuthorizationData data, EncryptionKey subkey, ChecksumFlags checksumFlags,
Microsoft.Protocols.TestTools.StackSdk.Security.KerberosLib.KerberosConstValue.GSSToken gssToken = KerberosConstValue.GSSToken.GSSSPNG)
{
APOptions options = new APOptions(KerberosUtility.ConvertInt2Flags((int)apOptions));
Authenticator authenticator = CreateAuthenticator(Context.Ticket, data, subkey, checksumFlags);
KerberosApRequest request = new KerberosApRequest(
Context.Pvno,
options,
Context.Ticket,
authenticator,
KeyUsageNumber.AP_REQ_Authenticator
);
return KerberosUtility.AddGssApiTokenHeader(request, this.oidPkt, gssToken);
}
public PaFxFastReq CreateAsPaFxFast(
EncryptionKey subKey,
FastOptions fastOptions,
ApOptions apOptions,
Asn1SequenceOf<PA_DATA> seqPaData,
string sName,
KDC_REQ_BODY kdcReqBody,
KrbFastArmorType armorType
)
{
string domain = this.Context.Realm.Value;
PrincipalName sname =
new PrincipalName(new KerbInt32((int)PrincipalType.NT_SRV_INST), KerberosUtility.String2SeqKerbString(sName, domain));
var armorKey = KerberosUtility.MakeArmorKey(
Context.SelectedEType,
subKey.keyvalue.ByteArrayValue,
Context.ArmorSessionKey.keyvalue.ByteArrayValue);
Context.FastArmorkey = new EncryptionKey(new KerbInt32((long)Context.SelectedEType), new Asn1OctetString(armorKey));
Asn1BerEncodingBuffer encodebuf = new Asn1BerEncodingBuffer();
kdcReqBody.BerEncode(encodebuf);
var checksumType = KerberosUtility.GetChecksumType(Context.SelectedEType);
var chksum = KerberosUtility.GetChecksum(
armorKey,
encodebuf.Data,
(int)KeyUsageNumber.FAST_REQ_CHECKSUM,
checksumType);
Checksum checkSum = new Checksum(new KerbInt32((int)checksumType), new Asn1OctetString(chksum));
Authenticator plaintextAuthenticator = CreateAuthenticator(Context.ArmorTicket, null, subKey);
KerberosApRequest apReq = new KerberosApRequest(Context.Pvno,
new APOptions(KerberosUtility.ConvertInt2Flags((int)apOptions)),
Context.ArmorTicket,
plaintextAuthenticator,
KeyUsageNumber.AP_REQ_Authenticator);
KDC_REQ_BODY innerKdcReqBody = CreateKdcRequestBody(KdcOptions.CANONICALIZE | KdcOptions.FORWARDABLE | KdcOptions.RENEWABLE, sname);
KerberosFastRequest fastReq = new KerberosFastRequest(fastOptions, seqPaData, innerKdcReqBody);
FastArmorApRequest fastArmor = new FastArmorApRequest(apReq.Request);
fastArmor.armorType = armorType;
KerberosArmoredRequest armoredReq
= new KerberosArmoredRequest(fastArmor, checkSum, (long)Context.SelectedEType, armorKey, fastReq);
PA_FX_FAST_REQUEST paFxFastReq = new PA_FX_FAST_REQUEST();
paFxFastReq.SetData(PA_FX_FAST_REQUEST.armored_data, armoredReq.FastArmoredReq);
PaFxFastReq paFxfast = new PaFxFastReq(paFxFastReq);
return paFxfast;
}
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();
}
public KpasswordRequest()
: base()
{
ap_req = new KerberosApRequest();
krb_priv = new KRB_PRIV();
}