GCH
62 lines
2.0 KiB
PowerShell
62 lines
2.0 KiB
PowerShell
# ============================================================
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# CHANGELOG
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# v1.1 - Added -AllUsers switch to check certificate and signed
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# RDP files across all user desktops instead of only the
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# public desktop.
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# Added Get-DesktopPaths helper function.
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# v1.0 - Initial version, checks public desktop only.
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# ============================================================
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param(
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[switch]$AllUsers
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)
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function Get-DesktopPaths {
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if ($AllUsers) {
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Get-ChildItem "$env:SystemDrive\Users" -Directory | ForEach-Object {
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$path = Join-Path $_.FullName "Desktop"
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if (Test-Path $path) { $path }
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}
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} else {
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[Environment]::GetFolderPath("CommonDesktopDirectory")
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}
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}
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$certSubject = "CN=RDPSign"
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# Check certificate exists in all three stores
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$certInMy = Get-ChildItem Cert:\LocalMachine\My | Where-Object { $_.Subject -eq $certSubject }
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$certInRoot = Get-ChildItem Cert:\LocalMachine\Root | Where-Object { $_.Subject -eq $certSubject }
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$certInPub = Get-ChildItem Cert:\LocalMachine\TrustedPublisher | Where-Object { $_.Subject -eq $certSubject }
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if (-not $certInMy -or -not $certInRoot -or -not $certInPub) {
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exit 1
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}
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# Check registry thumbprint
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$gpoPath = "HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services"
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$thumbprintValue = (Get-ItemProperty -Path $gpoPath -Name "TrustedCertThumbprints" -ErrorAction SilentlyContinue).TrustedCertThumbprints
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if ([string]::IsNullOrWhiteSpace($thumbprintValue)) {
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exit 1
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}
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# Check that all RDP files on desktop(s) are signed
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foreach ($desktopPath in (Get-DesktopPaths)) {
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$rdpFiles = Get-ChildItem -Path $desktopPath -Filter "*.rdp" -ErrorAction SilentlyContinue
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if ($rdpFiles.Count -eq 0) {
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exit 1
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}
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foreach ($file in $rdpFiles) {
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$content = Get-Content $file.FullName -ErrorAction SilentlyContinue
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$hasSig = $content | Where-Object { $_ -match "^signature:s:" }
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if (-not $hasSig) {
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exit 1
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}
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}
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}
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Write-Host "Detected"
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exit 0
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