Remove-WDACConfig.psm1
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#requires -version 7.3.3 function Remove-WDACConfig { [CmdletBinding( DefaultParameterSetName = "set1", HelpURI = "https://github.com/HotCakeX/Harden-Windows-Security/wiki/WDACConfig", SupportsShouldProcess = $true, PositionalBinding = $false, ConfirmImpact = 'High' )] Param( [Parameter(Mandatory = $false, ParameterSetName = "set1", Position = 0, ValueFromPipeline = $true)][switch]$RemoveSignedPolicies, [Parameter(Mandatory = $false, ParameterSetName = "set2", Position = 0, ValueFromPipeline = $true)][switch]$RemovePolicies, [ValidatePattern('.*\.xml')] [parameter(Mandatory = $true, ParameterSetName = "set1", ValueFromPipelineByPropertyName = $true)][string[]]$PolicyPaths, [ValidatePattern('.*\.exe')] [parameter(Mandatory = $false, ParameterSetName = "set1", ValueFromPipelineByPropertyName = $true)][string]$SignToolPath, [ValidateScript({ try { # TryCatch to show a custom error message instead of saying input is null when personal store is empty ((Get-ChildItem -ErrorAction Stop -Path 'Cert:\CurrentUser\My').Subject.Substring(3)) -contains $_ } catch { Write-Error "A certificate with the provided common name doesn't exist in the personal store of the user certificates." } # this error msg is shown when cert CN is not available in the personal store of the user certs }, ErrorMessage = "A certificate with the provided common name doesn't exist in the personal store of the user certificates." )] [parameter(Mandatory = $true, ParameterSetName = "set1", ValueFromPipelineByPropertyName = $true)][string]$CertCN, [ValidateSet([PolicyIDz])][parameter(Mandatory = $false, ParameterSetName = "set2")][string[]]$PolicyIDs, [ValidateSet([PolicyNamez])][parameter(Mandatory = $false, ParameterSetName = "set2")][string[]]$PolicyNames, [Parameter(Mandatory = $false)][switch]$SkipVersionCheck ) begin { # Make sure the latest version of the module is installed and if not, automatically update it, clean up any old versions function Update-self { $currentversion = (Test-modulemanifest "$psscriptroot\WDACConfig.psd1").Version.ToString() try { $latestversion = Invoke-RestMethod -Uri "https://raw.githubusercontent.com/HotCakeX/Harden-Windows-Security/main/WDACConfig/version.txt" } catch { Write-Error "Couldn't verify if the latest version of the module is installed, please check your Internet connection. You can optionally bypass the online check by using -SkipVersionCheck parameter." break } if (-NOT ($currentversion -eq $latestversion)) { Write-Host "The currently installed module's version is $currentversion while the latest version is $latestversion - Auto Updating the module now and will run your command after that 💓" Remove-Module -Name WDACConfig -Force try { Uninstall-Module -Name WDACConfig -AllVersions -Force -ErrorAction Stop Install-Module -Name WDACConfig -RequiredVersion $latestversion -Force Import-Module -Name WDACConfig -RequiredVersion $latestversion -Force -Global } catch { Install-Module -Name WDACConfig -RequiredVersion $latestversion -Force Import-Module -Name WDACConfig -RequiredVersion $latestversion -Force -Global } } } # Test Admin privileges Function Test-IsAdmin { $identity = [Security.Principal.WindowsIdentity]::GetCurrent() $principal = New-Object Security.Principal.WindowsPrincipal $identity $principal.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator) } if (-NOT (Test-IsAdmin)) { write-host "Administrator privileges Required" -ForegroundColor Magenta break } $ErrorActionPreference = 'Stop' if (-NOT $SkipVersionCheck) { Update-self } # argument tab auto-completion and ValidateSet for Policy names Class PolicyNamez : System.Management.Automation.IValidateSetValuesGenerator { [string[]] GetValidValues() { $PolicyNamez = ((CiTool -lp -json | ConvertFrom-Json).Policies | Where-Object { $_.IsSystemPolicy -ne "True" }).Friendlyname return [string[]]$PolicyNamez } } # argument tab auto-completion and ValidateSet for Policy IDs Class PolicyIDz : System.Management.Automation.IValidateSetValuesGenerator { [string[]] GetValidValues() { $PolicyIDz = ((CiTool -lp -json | ConvertFrom-Json).Policies | Where-Object { $_.IsSystemPolicy -ne "True" }).policyID return [string[]]$PolicyIDz } } } process { if ($RemoveSignedPolicies) { foreach ($PolicyPath in $PolicyPaths) { # sanitize the policy file by removing SupplementalPolicySigners $xml = [xml](Get-Content $PolicyPath) $SuppSingerIDs = $xml.SiPolicy.SupplementalPolicySigners.SupplementalPolicySigner.SignerId $PolicyName = ($xml.SiPolicy.Settings.Setting | Where-Object { $_.provider -eq "PolicyInfo" -and $_.valuename -eq "Name" -and $_.key -eq "Information" }).value.string if ($SuppSingerIDs) { Write-host "`n$($SuppSingerIDs.count) SupplementalPolicySigners have been found in $PolicyName policy, removing them now..." -ForegroundColor Yellow $SuppSingerIDs | ForEach-Object { $PolContent = Get-Content -Raw -Path $PolicyPath $PolContent -match "<Signer ID=`"$_`"[\S\s]*</Signer>" | Out-Null $PolContent = $PolContent -replace $Matches[0], "" Set-Content -Value $PolContent -Path $PolicyPath } $PolContent -match "<SupplementalPolicySigners>[\S\s]*</SupplementalPolicySigners>" | Out-Null $PolContent = $PolContent -replace $Matches[0], "" Set-Content -Value $PolContent -Path $PolicyPath # remove empty lines from the entire policy file (Get-Content -Path $PolicyPath) | Where-Object { $_.trim() -ne "" } | set-content -Path $PolicyPath -Force Write-host "Policy successfully sanitized and all SupplementalPolicySigners have been removed." -ForegroundColor Green } else { Write-host "`nNo sanitization required because no SupplementalPolicySigners have been found in $PolicyName policy." -ForegroundColor Green } Set-RuleOption -FilePath $PolicyPath -Option 6 $PolicyID = $xml.SiPolicy.PolicyID ConvertFrom-CIPolicy $PolicyPath "$PolicyID.cip" | Out-Null if ($SignToolPath) { $SignToolPath = $SignToolPath } else { if ($Env:PROCESSOR_ARCHITECTURE -eq "AMD64") { if ( Test-Path -Path "C:\Program Files (x86)\Windows Kits\*\bin\*\x64\signtool.exe") { $SignToolPath = "C:\Program Files (x86)\Windows Kits\*\bin\*\x64\signtool.exe" } else { Write-Error "signtool.exe couldn't be found" break } } elseif ($Env:PROCESSOR_ARCHITECTURE -eq "ARM64") { if (Test-Path -Path "C:\Program Files (x86)\Windows Kits\*\bin\*\arm64\signtool.exe") { $SignToolPath = "C:\Program Files (x86)\Windows Kits\*\bin\*\arm64\signtool.exe" } else { Write-Error "signtool.exe couldn't be found" break } } } & $SignToolPath sign -v -n $CertCN -p7 . -p7co 1.3.6.1.4.1.311.79.1 -fd certHash ".\$PolicyID.cip" Remove-Item ".\$PolicyID.cip" -Force Rename-Item "$PolicyID.cip.p7" -NewName "$PolicyID.cip" -Force CiTool --update-policy ".\$PolicyID.cip" -json Write-host "`n`nPolicy with the following details has been Re-signed and Re-deployed in Unsigned mode:" -ForegroundColor Green Write-Output "PolicyName = $PolicyName" Write-Output "PolicyGUID = $PolicyID`n" } } if ($RemovePolicies) { foreach ($ID in $PolicyIDs ) { citool --remove-policy "{$ID}" } foreach ($PolicyName in $PolicyNames) { $NameID = ((CiTool -lp -json | ConvertFrom-Json).Policies | Where-Object { $_.FriendlyName -eq $PolicyName }).PolicyID citool --remove-policy "{$NameID}" } } } <# .SYNOPSIS Removes Signed and unsigned deployed WDAC policies (Windows Defender Application Control) .LINK https://github.com/HotCakeX/Harden-Windows-Security/wiki/WDACConfig .DESCRIPTION Using official Microsoft methods, Removes Signed and unsigned deployed WDAC policies (Windows Defender Application Control) .COMPONENT Windows Defender Application Control .FUNCTIONALITY Using official Microsoft methods, Removes Signed and unsigned deployed WDAC policies (Windows Defender Application Control) .PARAMETER RemoveSignedPolicies Remove Signed WDAC Policies .PARAMETER RemovePolicies Removes Unsigned deployed WDAC policies as well as Signed deployed Supplemental WDAC policies .PARAMETER SkipVersionCheck Can be used with any parameter to bypass the online version check - only to be used in rare cases #> } # Set PSReadline tab completion to complete menu for easier access to available parameters - Only for the current session Set-PSReadlineKeyHandler -Key Tab -Function MenuComplete # argument tab auto-completion for Certificate common name $ArgumentCompleterCertificateCN = { $var = certutil -asn $CertPath $cnFound = $false $count = 0 foreach ($line in $var -split "`n") { if ($line -match '\(cn\)') { if ($count -eq 0) { $count++ } elseif ($count -eq 1) { $cnFound = $true } continue } if ($cnFound -and $line -match '"(.+)"') { $regexString = $matches[1] break } } $CertStoreResults = (Get-ChildItem -Path 'Cert:\CurrentUser\My').Subject.Substring(3) foreach ($item in $CertStoreResults) { if ($item -eq $regexString) { $finalResult = $item } } if (-NOT $finalResult) { $finalResult = (Get-ChildItem -Path 'Cert:\CurrentUser\My').Subject.Substring(3) | Where-Object { $_ -NotLike "*, DC=*" } } return "`"$finalResult`"" } Register-ArgumentCompleter -CommandName "Remove-WDACConfig" -ParameterName "CertCN" -ScriptBlock $ArgumentCompleterCertificateCN # argument tab auto-completion for Policy Paths to show only .xml files and only base policies $ArgumentCompleterPolicyPaths = { Get-ChildItem | where-object { $_.extension -like '*.xml' } | ForEach-Object { $xmlitem = [xml](Get-Content $_) $PolicyType = $xmlitem.SiPolicy.PolicyType if ($PolicyType -eq "Base Policy") { $_ } } | foreach-object { return "`"$_`"" } } Register-ArgumentCompleter -CommandName "Remove-WDACConfig" -ParameterName "PolicyPaths" -ScriptBlock $ArgumentCompleterPolicyPaths # argument tab auto-completion for Certificate Path to show only .cer files $ArgumentCompleterCertPath = { Get-ChildItem | where-object { $_.extension -like '*.cer' } | foreach-object { return "`"$_`"" } } Register-ArgumentCompleter -CommandName "Remove-WDACConfig" -ParameterName "CertPath" -ScriptBlock $ArgumentCompleterCertPath # argument tab auto-completion for Certificate Path to show only .cer files $ArgumentCompleterSignToolPath = { Get-ChildItem | where-object { $_.extension -like '*.exe' } | foreach-object { return "`"$_`"" } } Register-ArgumentCompleter -CommandName "Remove-WDACConfig" -ParameterName "SignToolPath" -ScriptBlock $ArgumentCompleterSignToolPath |