private static IEnumerable <SecurityIdentifier> ParseAttributes(NdrBinaryReader pacStream, int count, int pointer)
{
var attributes = new List <SecurityIdentifier>();
if (pointer == 0)
{
return(attributes);
}
int realCount = pacStream.ReadInt();
if (realCount != count)
{
throw new InvalidDataException($"Expected count {count} doesn't match actual count {realCount}");
}
for (int i = 0; i < count; i++)
{
pacStream.Align(4);
var sid = pacStream.ReadRid();
attributes.Add(new SecurityIdentifier(sid, (SidAttributes)pacStream.ReadInt()));
}
return(attributes);
}
private void ReadValues(NdrBinaryReader Stream)
{
values = new object[Count];
for (var i = 0; i < Count; i++)
{
switch (Type)
{
case ClaimType.CLAIM_TYPE_BOOLEAN:
values[i] = Convert.ToBoolean(Stream.ReadLong());
break;
case ClaimType.CLAIM_TYPE_INT64:
values[i] = Stream.ReadLong();
break;
case ClaimType.CLAIM_TYPE_UINT64:
values[i] = (ulong)Stream.ReadLong();
break;
case ClaimType.CLAIM_TYPE_STRING:
values[i] = Stream.ReadString();
break;
}
}
}
public PacSignature(byte[] infoBuffer, ref byte[] signatureData)
{
var pacStream = new NdrBinaryReader(infoBuffer);
Type = (ChecksumType)pacStream.ReadUnsignedInt();
SignaturePosition = (int)pacStream.Position;
switch (Type)
{
case ChecksumType.KERB_CHECKSUM_HMAC_MD5:
Signature = pacStream.Read(16);
Validator = new HmacMd5PacValidator(Signature, ref signatureData);
break;
case ChecksumType.HMAC_SHA1_96_AES128:
Signature = pacStream.Read(12);
Validator = new HmacAes128PacValidator(Signature, ref signatureData);
break;
case ChecksumType.HMAC_SHA1_96_AES256:
Signature = pacStream.Read(12);
Validator = new HmacAes256PacValidator(Signature, ref signatureData);
break;
}
if (pacStream.Position < pacStream.Length)
{
RODCIdentifier = pacStream.ReadShort();
}
}
internal void ReadValue(NdrBinaryReader stream)
{
Id = stream.ReadString();
stream.Align(4);
var count = stream.ReadInt();
if (count != Count)
{
throw new InvalidDataException($"ValueCount {Count} doesn't match actual count {count} for claim {Id}.");
}
if (Type == ClaimType.CLAIM_TYPE_STRING)
{
var ptr = stream.ReadInt();
if (count > 1 && ptr != 0)
{
stream.Seek(8);
}
}
ReadValues(stream);
}
private void ReadCommonHeader(NdrBinaryReader pacStream)
{
Version = pacStream.Read(1)[0];
if (Version != NdrConstants.PROTOCOL_VERSION)
{
throw new InvalidDataException($"Unknown Protocol version {Version}");
}
var headerBits = pacStream.Read(1)[0];
var endian = headerBits >> 4 & 0x0F;
if (endian != 0 && endian != 1)
{
throw new InvalidDataException($"Unknown endianness {endian}");
}
Endian = Convert.ToBoolean(endian);
Encoding = (byte)(headerBits & 0x0F);
if (Encoding != 0 && Encoding != 1)
{
throw new InvalidDataException($"Unknown encoding {Encoding}");
}
Length = pacStream.ReadShort();
if (Length != NdrConstants.COMMON_HEADER_BYTES)
{
throw new InvalidDataException($"Unknown common header length {Length}");
}
}
public ClaimsArray(NdrBinaryReader stream)
: base(stream)
{
ClaimSource = (ClaimSourceType)Stream.ReadInt();
Count = Stream.ReadUnsignedInt();
var claims = new List <ClaimEntry>();
Stream.Seek(4);
var count = Stream.ReadInt();
if (Count != count)
{
throw new InvalidDataException($"Claims count {Count} doesn't match actual count {count}");
}
for (var i = 0; i < Count; i++)
{
claims.Add(new ClaimEntry(Stream));
}
foreach (var entry in claims)
{
entry.ReadValue(Stream);
}
ClaimEntries = claims;
}
public RpcHeader(NdrBinaryReader pacStream)
{
ReadCommonHeader(pacStream);
pacStream.Read(4);
pacStream.Read(8);
pacStream.Read(4);
}
public ClaimEntry(NdrBinaryReader pacStream)
{
pacStream.Seek(4);
Type = (ClaimType)pacStream.ReadShort();
pacStream.Align(4);
Count = pacStream.ReadUnsignedInt();
pacStream.Seek(4);
}
public ClaimEntry(NdrBinaryReader stream)
: base(stream)
{
Stream.Seek(4);
Type = (ClaimType)Stream.ReadShort();
Stream.Align(4);
Count = Stream.ReadUnsignedInt();
Stream.Seek(4);
}
public string ReadString(NdrBinaryReader reader)
{
if (pointer == 0)
{
return(null);
}
var result = reader.ReadString(maxLength);
int expected = Length / 2;
if (result.Length != expected)
{
throw new InvalidDataException($"Read length {result.Length} doesn't match expected length {expected}");
}
return(result);
}
private IEnumerable <ClaimsArray> ReadClaimsArray(NdrBinaryReader pacStream)
{
var count = pacStream.ReadInt();
if (count != Count)
{
throw new InvalidDataException($"Array count {Count} doesn't match actual count {count}");
}
var claims = new List <ClaimsArray>();
for (var i = 0; i < Count; i++)
{
claims.Add(new ClaimsArray(pacStream));
}
return(claims);
}
public ClaimsSet(byte[] claims)
{
var pacStream = new NdrBinaryReader(claims);
Header = new RpcHeader(pacStream);
Count = pacStream.ReadInt();
pacStream.Seek(4);
ReservedType = pacStream.ReadShort();
ReservedFieldSize = pacStream.ReadInt();
ReservedField = pacStream.Read(ReservedFieldSize);
pacStream.Align(8);
ClaimsArray = ReadClaimsArray(pacStream);
}
private static SecurityIdentifier[] ParseExtraSids(NdrBinaryReader pacStream, int extraSidCount, int extraSidPointer)
{
if (extraSidPointer == 0)
{
return(new SecurityIdentifier[0]);
}
int realExtraSidCount = pacStream.ReadInt();
if (realExtraSidCount != extraSidCount)
{
throw new InvalidDataException($"Expected Sid count {extraSidCount} doesn't match actual sid count {realExtraSidCount}");
}
var extraSidAtts = new SecurityIdentifier[extraSidCount];
var pointers = new int[extraSidCount];
var attributes = new SidAttributes[extraSidCount];
for (int i = 0; i < extraSidCount; i++)
{
pointers[i] = pacStream.ReadInt();
attributes[i] = (SidAttributes)pacStream.ReadUnsignedInt();
}
for (int i = 0; i < extraSidCount; i++)
{
SecurityIdentifier sid = null;
if (pointers[i] != 0)
{
sid = new SecurityIdentifier(pacStream.ReadSid(), attributes[i]);
}
extraSidAtts[i] = sid;
}
return(extraSidAtts);
}
public PacLogonInfo(byte[] node)
{
var pacStream = new NdrBinaryReader(node);
Header = new RpcHeader(pacStream);
LogonTime = pacStream.ReadFiletime();
LogoffTime = pacStream.ReadFiletime();
KickOffTime = pacStream.ReadFiletime();
PwdLastChangeTime = pacStream.ReadFiletime();
PwdCanChangeTime = pacStream.ReadFiletime();
PwdMustChangeTime = pacStream.ReadFiletime();
var userName = pacStream.ReadRPCUnicodeString();
var userDisplayName = pacStream.ReadRPCUnicodeString();
var logonScript = pacStream.ReadRPCUnicodeString();
var profilePath = pacStream.ReadRPCUnicodeString();
var homeDirectory = pacStream.ReadRPCUnicodeString();
var homeDrive = pacStream.ReadRPCUnicodeString();
LogonCount = pacStream.ReadShort();
BadPasswordCount = pacStream.ReadShort();
var userSid = pacStream.ReadRid();
var groupSid = pacStream.ReadRid();
// Groups information
var groupCount = pacStream.ReadInt();
var groupPointer = pacStream.ReadInt();
UserFlags = (UserFlags)pacStream.ReadInt();
// sessionKey
pacStream.Read(new byte[16]);
var serverNameString = pacStream.ReadRPCUnicodeString();
var domainNameString = pacStream.ReadRPCUnicodeString();
var domainIdPointer = pacStream.ReadInt();
// reserved1
pacStream.Read(new byte[8]);
UserAccountControl = (UserAccountControlFlags)pacStream.ReadInt();
SubAuthStatus = pacStream.ReadInt();
LastSuccessfulILogon = pacStream.ReadFiletime();
LastFailedILogon = pacStream.ReadFiletime();
FailedILogonCount = pacStream.ReadInt();
// reserved3
pacStream.ReadInt();
// Extra SIDs information
var extraSidCount = pacStream.ReadInt();
var extraSidPointer = pacStream.ReadInt();
var resourceDomainIdPointer = pacStream.ReadInt();
var resourceGroupCount = pacStream.ReadInt();
var resourceGroupPointer = pacStream.ReadInt();
UserName = userName.ReadString(pacStream);
UserDisplayName = userDisplayName.ReadString(pacStream);
LogonScript = logonScript.ReadString(pacStream);
ProfilePath = profilePath.ReadString(pacStream);
HomeDirectory = homeDirectory.ReadString(pacStream);
HomeDrive = homeDrive.ReadString(pacStream);
// Groups data
var groupSids = ParseAttributes(pacStream, groupCount, groupPointer);
// Server related strings
ServerName = serverNameString.ReadString(pacStream);
DomainName = domainNameString.ReadString(pacStream);
if (domainIdPointer != 0)
{
DomainSid = pacStream.ReadSid();
}
UserSid = userSid.AppendTo(DomainSid);
GroupSid = groupSid.AppendTo(DomainSid);
GroupSids = groupSids.Select(g => g.AppendTo(DomainSid)).ToList();
if (UserFlags.HasFlag(UserFlags.LOGON_EXTRA_SIDS))
{
ExtraSids = ParseExtraSids(pacStream, extraSidCount, extraSidPointer).Select(e => e.AppendTo(DomainSid)).ToList();
}
if (resourceDomainIdPointer != 0)
{
ResourceDomainSid = pacStream.ReadSid();
}
if (UserFlags.HasFlag(UserFlags.LOGON_RESOURCE_GROUPS))
{
ResourceGroups = ParseAttributes(
pacStream,
resourceGroupCount,
resourceGroupPointer
).Select(g => g.AppendTo(DomainSid)).ToList();
}
}
