using namespace System.Security.AccessControl;
using namespace System.Security.Principal;
using namespace Microsoft.Win32;

if([WindowsIdentity]::GetCurrent().Groups -notcontains 'S-1-5-32-544') { Start-Process -FilePath "$($MyInvocation.MyCommand.Path)" -Verb RunAs; exit }

$cdKey = '1234-5678-9abc-dddf' + (-join ((97..122) | Get-Random -Count 5 | % {[char]$_}))
Write-Host "Generated CD-Key: " -NoNewline
Write-Host $cdKey -ForegroundColor ([ConsoleColor]::Red)
$regPath = 'SOFTWARE\WOW6432Node\Illusion Softworks\Hidden & Dangerous 2'
$regKey = [Registry]::LocalMachine.OpenSubKey($regPath, [RegistryKeyPermissionCheck]::ReadWriteSubTree, [RegistryRights]::ChangePermissions)
$acl = $regKey.GetAccessControl()
$acr = New-Object System.Security.AccessControl.RegistryAccessRule([NTAccount]'BUILTIN\Administrators', [RegistryRights]'SetValue, Delete', [InheritanceFlags]::ContainerInherit, [PropagationFlags]::None, [AccessControlType]::Deny)
$acl.RemoveAccessRule($acr) | Out-Null
$regKey.SetAccessControl($acl)
Set-ItemProperty -Path ('HKLM:\\' + $regPath) -Name 'key' -Value $cdKey -Force
$acl.SetAccessRule($acr)
$regKey.SetAccessControl($acl)
pause