Preloader.ps1
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# This file is automatically imported in the PowerShell session every time a cmdlet of this module is called, without requiring to manually use the Import-Module cmdlet # all the variables in here persist until PowerShell (session) is closed if (!$IsWindows) { Throw [System.PlatformNotSupportedException] 'The Harden Windows Security module only runs on Windows operation systems.' } # Create tamper resistant global variables (if they don't already exist) try { if ((Test-Path -Path 'Variable:\Requiredbuild') -eq $false) { New-Variable -Name 'Requiredbuild' -Value '22621.2428' -Option 'Constant' -Scope 'Script' -Description 'Minimum required OS build number' -Force } if ((Test-Path -Path 'Variable:\OSBuild') -eq $false) { New-Variable -Name 'OSBuild' -Value ([System.Environment]::OSVersion.Version.Build) -Option 'Constant' -Scope 'Script' -Description 'Current OS build version' -Force } if ((Test-Path -Path 'Variable:\UBR') -eq $false) { New-Variable -Name 'UBR' -Value (Get-ItemPropertyValue -Path 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion' -Name 'UBR') -Option 'Constant' -Scope 'Script' -Description 'Update Build Revision (UBR) number' -Force } if ((Test-Path -Path 'Variable:\FullOSBuild') -eq $false) { New-Variable -Name 'FullOSBuild' -Value "$OSBuild.$UBR" -Option 'Constant' -Scope 'Script' -Description 'Create full OS build number as seen in Windows Settings' -Force } if ((Test-Path -Path 'Variable:\HardeningModulePath') -eq $false) { New-Variable -Name 'HardeningModulePath' -Value ($PSScriptRoot) -Option 'Constant' -Scope 'Global' -Description 'Storing the value of $PSScriptRoot in a global constant variable to allow the internal functions to use it when navigating the module structure' -Force } } catch { Throw [System.InvalidOperationException] 'Could not set the required global variables.' } # Make sure the current OS build is equal or greater than the required build number if (-NOT ([System.Decimal]$FullOSBuild -ge [System.Decimal]$Requiredbuild)) { Throw [System.PlatformNotSupportedException] "You are not using the latest build of the Windows OS. A minimum build of $Requiredbuild is required but your OS build is $FullOSBuild`nPlease go to Windows Update to install the updates and then try again." } # check if user's OS is Windows Home edition if ((Get-CimInstance -ClassName Win32_OperatingSystem).OperatingSystemSKU -eq '101') { Throw [System.PlatformNotSupportedException] 'Windows Home edition detected, exiting...' } |