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hDNSRecord.cs
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hDNSRecord.cs
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using System;
using System.Runtime.InteropServices;
using System.Net;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace SOAPHound
{
class hDNSRecord
{
// https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-dnsp/f97756c9-3783-428b-9451-b376f877319a
[StructLayout(LayoutKind.Sequential)]
public struct DnssrvRpcRecord
{
public UInt16 wDataLength;
public UInt16 wType;
public UInt32 dwFlags;
public UInt32 dwSerial;
public UInt32 dwTtlSeconds;
public UInt32 dwTimeStamp;
public UInt32 dwReserved;
}
public static void ReadDNSObject(Byte[] arrObj)
{
try
{
IntPtr pObject = Marshal.AllocHGlobal(arrObj.Length);
Marshal.Copy(arrObj, 0, pObject, arrObj.Length);
DnssrvRpcRecord oRecord = (DnssrvRpcRecord)Marshal.PtrToStructure(pObject, typeof(DnssrvRpcRecord));
IntPtr pData = (IntPtr)(pObject.ToInt64() + 24);
if (oRecord.wType == 0)
{
Int64 iMSTS = (Marshal.ReadInt64(pData) / 10) / 1000;
Console.WriteLine(" |_ DNS_RPC_RECORD_TS : " + (new DateTime(1601, 1, 1)).AddMilliseconds(iMSTS));
}
else if (oRecord.wType == 1)
{
byte[] bytes = BitConverter.GetBytes(Marshal.ReadInt32(pData));
Console.WriteLine(" |_ DNS_RPC_RECORD_A : " + new IPAddress(bytes).ToString());
}
else if (oRecord.wType == 2 || oRecord.wType == 5 || oRecord.wType == 12)
{
Int16 iLen = Marshal.ReadByte(pData);
Int16 iSeg = Marshal.ReadByte((IntPtr)(pData.ToInt64() + 1));
IntPtr pDataPtr = (IntPtr)(pData.ToInt64() + 2);
String sRecord = String.Empty;
for (int i = 0; i < iSeg; i++)
{
Int16 iSegLen = Marshal.ReadByte(pDataPtr);
sRecord += Marshal.PtrToStringAnsi((IntPtr)(pDataPtr.ToInt64() + 1), iSegLen);
if (i != (iSeg - 1))
{
sRecord += ".";
}
pDataPtr = (IntPtr)(pDataPtr.ToInt64() + iSegLen + 1);
}
Console.WriteLine(" |_ DNS_RPC_RECORD_NODE_NAME : " + sRecord);
}
else if (oRecord.wType == 33)
{
Int16 iPrio = getInt16ToBigEndian(Marshal.ReadInt16(pData));
Int16 iWeight = getInt16ToBigEndian(Marshal.ReadInt16((IntPtr)(pData.ToInt64() + 2)));
Int16 iPort = getInt16ToBigEndian(Marshal.ReadInt16((IntPtr)(pData.ToInt64() + 4)));
Int16 iSeg = Marshal.ReadByte((IntPtr)(pData.ToInt64() + 7));
IntPtr pDataPtr = (IntPtr)(pData.ToInt64() + 8);
String sRecord = String.Empty;
for (int i = 0; i < iSeg; i++)
{
Int16 iSegLen = Marshal.ReadByte(pDataPtr);
sRecord += Marshal.PtrToStringAnsi((IntPtr)(pDataPtr.ToInt64() + 1), iSegLen);
if (i != (iSeg - 1))
{
sRecord += ".";
}
pDataPtr = (IntPtr)(pDataPtr.ToInt64() + iSegLen + 1);
}
Console.WriteLine(" |_ DNS_RPC_RECORD_SRV");
Console.WriteLine(" |_ Priority : " + iPrio);
Console.WriteLine(" |_ Weight : " + iWeight);
Console.WriteLine(" |_ Port : " + iPort);
Console.WriteLine(" |_ Name : " + sRecord);
}
else if (oRecord.wType == 6)
{
Int32 iSerial = getInt32ToBigEndian(Marshal.ReadInt32(pData));
Int32 iRefresh = getInt32ToBigEndian(Marshal.ReadInt32((IntPtr)(pData.ToInt64() + 4)));
Int32 iRetry = getInt32ToBigEndian(Marshal.ReadInt32((IntPtr)(pData.ToInt64() + 8)));
Int32 iExpire = getInt32ToBigEndian(Marshal.ReadInt32((IntPtr)(pData.ToInt64() + 12)));
Int32 iMinimumTtl = getInt32ToBigEndian(Marshal.ReadInt32((IntPtr)(pData.ToInt64() + 16)));
Int16 iLen = Marshal.ReadByte((IntPtr)(pData.ToInt64() + 20));
Int16 iSeg = Marshal.ReadByte((IntPtr)(pData.ToInt64() + 21));
IntPtr pDataPtr = (IntPtr)(pData.ToInt64() + 22);
String sNamePrimaryServer = String.Empty;
for (int i = 0; i < iSeg; i++)
{
Int16 iSegLen = Marshal.ReadByte(pDataPtr);
sNamePrimaryServer += Marshal.PtrToStringAnsi((IntPtr)(pDataPtr.ToInt64() + 1), iSegLen);
if (i != (iSeg - 1))
{
sNamePrimaryServer += ".";
}
pDataPtr = (IntPtr)(pDataPtr.ToInt64() + iSegLen + 1);
}
iSeg = Marshal.ReadByte((IntPtr)(pData.ToInt64() + 21 + iLen));
pDataPtr = (IntPtr)(pData.ToInt64() + 22 + iLen);
String sZoneAdminEmail = String.Empty;
for (int i = 0; i < iSeg; i++)
{
Int16 iSegLen = Marshal.ReadByte(pDataPtr);
sZoneAdminEmail += Marshal.PtrToStringAnsi((IntPtr)(pDataPtr.ToInt64() + 1), iSegLen);
if (i != (iSeg - 1))
{
sZoneAdminEmail += ".";
}
pDataPtr = (IntPtr)(pDataPtr.ToInt64() + iSegLen + 1);
}
Console.WriteLine(" |_ DNS_RPC_RECORD_SOA");
Console.WriteLine(" |_ SerialNo : " + iSerial);
Console.WriteLine(" |_ Refresh : " + iRefresh);
Console.WriteLine(" |_ Retry : " + iRetry);
Console.WriteLine(" |_ Expire : " + iExpire);
Console.WriteLine(" |_ MinimumTtl : " + iMinimumTtl);
Console.WriteLine(" |_ PrimaryServer : " + sNamePrimaryServer);
Console.WriteLine(" |_ AdminEmail : " + sZoneAdminEmail);
}
else if (oRecord.wType == 28)
{
Byte[] bIPV6 = new byte[16];
Marshal.Copy(pData, bIPV6, 0, 16);
Console.WriteLine(" |_ DNS_RPC_RECORD_AAAA : " + new IPAddress(bIPV6).ToString());
}
else
{
Console.WriteLine(" |_ Unimplemented DNS Record Type ---> " + oRecord.wType);
Console.WriteLine(" |_ DEBUG : " + BitConverter.ToString(arrObj).Replace("-", " "));
}
Marshal.FreeHGlobal(pObject);
}
catch (Exception ex)
{
Console.WriteLine(" |_ Failed to parse DNS entry..");
if (ex.InnerException != null)
{
Console.WriteLine(" |_ " + ex.InnerException.Message);
}
else
{
Console.WriteLine(" |_ " + ex.Message);
}
}
}
public static void ReadandOutputDNSObject(Byte[] arrObj, string filepath)
{
try
{
IntPtr pObject = Marshal.AllocHGlobal(arrObj.Length);
Marshal.Copy(arrObj, 0, pObject, arrObj.Length);
DnssrvRpcRecord oRecord = (DnssrvRpcRecord)Marshal.PtrToStructure(pObject, typeof(DnssrvRpcRecord));
IntPtr pData = (IntPtr)(pObject.ToInt64() + 24);
if (oRecord.wType == 0)
{
Int64 iMSTS = (Marshal.ReadInt64(pData) / 10) / 1000;
File.AppendAllText(filepath, "\r\n |_ DNS_RPC_RECORD_TS : " + (new DateTime(1601, 1, 1)).AddMilliseconds(iMSTS));
}
else if (oRecord.wType == 1)
{
byte[] bytes = BitConverter.GetBytes(Marshal.ReadInt32(pData));
File.AppendAllText(filepath, "\r\n |_ DNS_RPC_RECORD_A : " + new IPAddress(bytes).ToString());
}
else if (oRecord.wType == 2 || oRecord.wType == 5 || oRecord.wType == 12)
{
Int16 iLen = Marshal.ReadByte(pData);
Int16 iSeg = Marshal.ReadByte((IntPtr)(pData.ToInt64() + 1));
IntPtr pDataPtr = (IntPtr)(pData.ToInt64() + 2);
String sRecord = String.Empty;
for (int i = 0; i < iSeg; i++)
{
Int16 iSegLen = Marshal.ReadByte(pDataPtr);
sRecord += Marshal.PtrToStringAnsi((IntPtr)(pDataPtr.ToInt64() + 1), iSegLen);
if (i != (iSeg - 1))
{
sRecord += ".";
}
pDataPtr = (IntPtr)(pDataPtr.ToInt64() + iSegLen + 1);
}
File.AppendAllText(filepath, "\r\n |_ DNS_RPC_RECORD_NODE_NAME : " + sRecord);
}
else if (oRecord.wType == 33)
{
Int16 iPrio = getInt16ToBigEndian(Marshal.ReadInt16(pData));
Int16 iWeight = getInt16ToBigEndian(Marshal.ReadInt16((IntPtr)(pData.ToInt64() + 2)));
Int16 iPort = getInt16ToBigEndian(Marshal.ReadInt16((IntPtr)(pData.ToInt64() + 4)));
Int16 iSeg = Marshal.ReadByte((IntPtr)(pData.ToInt64() + 7));
IntPtr pDataPtr = (IntPtr)(pData.ToInt64() + 8);
String sRecord = String.Empty;
for (int i = 0; i < iSeg; i++)
{
Int16 iSegLen = Marshal.ReadByte(pDataPtr);
sRecord += Marshal.PtrToStringAnsi((IntPtr)(pDataPtr.ToInt64() + 1), iSegLen);
if (i != (iSeg - 1))
{
sRecord += ".";
}
pDataPtr = (IntPtr)(pDataPtr.ToInt64() + iSegLen + 1);
}
File.AppendAllText(filepath, "\r\n |_ DNS_RPC_RECORD_SRV");
File.AppendAllText(filepath, "\r\n |_ Priority : " + iPrio);
File.AppendAllText(filepath, "\r\n |_ Weight : " + iWeight);
File.AppendAllText(filepath, "\r\n |_ Port : " + iPort);
File.AppendAllText(filepath, "\r\n |_ Name : " + sRecord);
}
else if (oRecord.wType == 6)
{
Int32 iSerial = getInt32ToBigEndian(Marshal.ReadInt32(pData));
Int32 iRefresh = getInt32ToBigEndian(Marshal.ReadInt32((IntPtr)(pData.ToInt64() + 4)));
Int32 iRetry = getInt32ToBigEndian(Marshal.ReadInt32((IntPtr)(pData.ToInt64() + 8)));
Int32 iExpire = getInt32ToBigEndian(Marshal.ReadInt32((IntPtr)(pData.ToInt64() + 12)));
Int32 iMinimumTtl = getInt32ToBigEndian(Marshal.ReadInt32((IntPtr)(pData.ToInt64() + 16)));
Int16 iLen = Marshal.ReadByte((IntPtr)(pData.ToInt64() + 20));
Int16 iSeg = Marshal.ReadByte((IntPtr)(pData.ToInt64() + 21));
IntPtr pDataPtr = (IntPtr)(pData.ToInt64() + 22);
String sNamePrimaryServer = String.Empty;
for (int i = 0; i < iSeg; i++)
{
Int16 iSegLen = Marshal.ReadByte(pDataPtr);
sNamePrimaryServer += Marshal.PtrToStringAnsi((IntPtr)(pDataPtr.ToInt64() + 1), iSegLen);
if (i != (iSeg - 1))
{
sNamePrimaryServer += ".";
}
pDataPtr = (IntPtr)(pDataPtr.ToInt64() + iSegLen + 1);
}
iSeg = Marshal.ReadByte((IntPtr)(pData.ToInt64() + 21 + iLen));
pDataPtr = (IntPtr)(pData.ToInt64() + 22 + iLen);
String sZoneAdminEmail = String.Empty;
for (int i = 0; i < iSeg; i++)
{
Int16 iSegLen = Marshal.ReadByte(pDataPtr);
sZoneAdminEmail += Marshal.PtrToStringAnsi((IntPtr)(pDataPtr.ToInt64() + 1), iSegLen);
if (i != (iSeg - 1))
{
sZoneAdminEmail += ".";
}
pDataPtr = (IntPtr)(pDataPtr.ToInt64() + iSegLen + 1);
}
File.AppendAllText(filepath, "\r\n |_ DNS_RPC_RECORD_SOA");
File.AppendAllText(filepath, "\r\n |_ SerialNo : " + iSerial);
File.AppendAllText(filepath, "\r\n |_ Refresh : " + iRefresh);
File.AppendAllText(filepath, "\r\n |_ Retry : " + iRetry);
File.AppendAllText(filepath, "\r\n |_ Expire : " + iExpire);
File.AppendAllText(filepath, "\r\n |_ MinimumTtl : " + iMinimumTtl);
File.AppendAllText(filepath, "\r\n |_ PrimaryServer : " + sNamePrimaryServer);
File.AppendAllText(filepath, "\r\n |_ AdminEmail : " + sZoneAdminEmail);
}
else if (oRecord.wType == 28)
{
Byte[] bIPV6 = new byte[16];
Marshal.Copy(pData, bIPV6, 0, 16);
File.AppendAllText(filepath, "\r\n |_ DNS_RPC_RECORD_AAAA : " + new IPAddress(bIPV6).ToString());
}
else
{
File.AppendAllText(filepath, "\r\n |_ Unimplemented DNS Record Type ---> " + oRecord.wType);
File.AppendAllText(filepath, "\r\n |_ DEBUG : " + BitConverter.ToString(arrObj).Replace("-", " "));
}
Marshal.FreeHGlobal(pObject);
}
catch (Exception ex)
{
File.AppendAllText(filepath, "\r\n |_ Failed to parse DNS entry..");
if (ex.InnerException != null)
{
File.AppendAllText(filepath, "\r\n |_ " + ex.InnerException.Message);
}
else
{
File.AppendAllText(filepath, "\r\n |_ " + ex.Message);
}
}
}
public static Int16 getInt16ToBigEndian(Int16 iInput)
{
byte[] aBytes = BitConverter.GetBytes(iInput);
Array.Reverse(aBytes);
return BitConverter.ToInt16(aBytes, 0);
}
public static Int32 getInt32ToBigEndian(Int32 iInput)
{
byte[] aBytes = BitConverter.GetBytes(iInput);
Array.Reverse(aBytes);
return BitConverter.ToInt32(aBytes, 0);
}
}
}