public static NtChallengeResponseFields CreateNtChallengeResponseFields(ChallengeMessage challengeMessage, string strUserName, byte[] passwordNTHash, ref uint payloadPointer)
{
var np = NTLMV2Response.CreateNTLMV2Response(challengeMessage, strUserName, passwordNTHash);
var t = new NtChallengeResponseFields(payloadPointer, np);
payloadPointer += t.NtChallengeResponseLen;
return(t);
}
public AuthenticateMessage(
MetaDataPayloadHex lmChallengeResponseField,
NtChallengeResponseFields ntChallengeResponseField,
MetaDataPayloadString domainNameField,
MetaDataPayloadString userNameField,
MetaDataPayloadString workstationField,
MetaDataPayloadString encryptedRandomSessionKeyField,
NegotiateFlags negotiateFlag,
Versions version
)
{
LmChallengeResponseField = lmChallengeResponseField;
NtChallengeResponseField = ntChallengeResponseField;
DomainNameField = domainNameField;
UserNameField = userNameField;
WorkstationField = workstationField;
EncryptedRandomSessionKeyField = encryptedRandomSessionKeyField;
NegotiateFlag = negotiateFlag;
Version = version;
}
static public AuthenticateMessage CreateAuthenticateMessage(ChallengeMessage challengeMessage, string strUserName, byte[] passwordNTHash)
{
uint payloadPointer = 88 - 16;
MetaDataPayloadHex lcrf = new MetaDataPayloadHex(payloadPointer, new byte[24]);
payloadPointer += lcrf.Len;
NtChallengeResponseFields ncrf = NtChallengeResponseFields.CreateNtChallengeResponseFields(challengeMessage, strUserName, passwordNTHash, ref payloadPointer);
MetaDataPayloadString domainNameField = new MetaDataPayloadString(payloadPointer, challengeMessage.TargetNameField.Buffer);
payloadPointer += domainNameField.Len;
var userNames = Encoding.Unicode.GetBytes(strUserName);
var len = (ushort)userNames.Length;
MetaDataPayloadString userNameField = new MetaDataPayloadString(payloadPointer, userNames);
payloadPointer += userNameField.Len;
MetaDataPayloadString workstationField = new MetaDataPayloadString(payloadPointer, challengeMessage.TargetNameField.Buffer);
payloadPointer += workstationField.Len;
byte[] t = new byte[16];
if (challengeMessage.NegotiateFlag.HasFlag(NegotiateFlags.NEGOTIATE_KEY_EXCH))
{
// EncryptedRandomSessionKey=MasterKey RC4-encrypts SecondaryMasterKey
throw new NotImplementedException();
}
MetaDataPayloadString EncryptedRandomSessionKeyField = new MetaDataPayloadString(payloadPointer, t);
payloadPointer += EncryptedRandomSessionKeyField.Len;
return(new AuthenticateMessage(lcrf, ncrf, domainNameField, userNameField, workstationField,
EncryptedRandomSessionKeyField,
challengeMessage.NegotiateFlag,
new Versions()
));
}