added Endermanch's "MS-DOS Mode" (PoC)

Author: khanhmuy

library/GeneralFunctions.psm1

@@ -31,8 +31,8 @@ function Info {
     Write-Output "- Disable ShellExperienceHost"
     Write-Output "- Disable SearchUI `n"
     Write-Output "Things that break (or doesn't work on) Windows 11 (will be fixed):"
-    Write-Output "- Disabling telemetry (Disables updates. See #7) `n`n"
-    Write-Output "- Remove user folders under This PC"
+    Write-Output "- Disabling telemetry (Disables updates. See #7)"
+    Write-Output "- Remove user folders under This PC  `n`n"
     Read-Host "Press Enter to continue"
 }
 
@@ -60,3 +60,35 @@ function InstallHyperV {
     }
     else { Install-WindowsFeature -Name "Hyper-V" -IncludeManagementTools -WarningAction SilentlyContinue }
 }
+
+function MSDOSMode {
+    Write-Output '"MS-DOS Mode" for Windows 10 (PoC, made by Endermanch)'
+    Write-Output "This is provided WITHOUT WARRANTY OF ANY KIND and is only a Proof of Concept."
+    Write-Output "Big thanks to Endermanch for this and his discovery of the BCPE exploit. `n`n"
+    
+    $conflocation = "$env:APPDATA\WindowsToolbox\"
+    $windowsdos = "https://dl.malwarewatch.org/multipurpose/Windows10DOS.zip"
+    
+    Write-Output "Downloading"
+    Invoke-WebRequest -Uri $windowsdos -OutFile $conflocation\Windows10DOS.zip
+    
+    Write-Output "Installing 7Zip4PowerShell (sorry, Expand-Archive does not support passwords)"
+    Install-Module 7Zip4PowerShell -Scope CurrentUser -Force -Verbose
+    Clear-Host
+    Write-Output "Extracting..."
+    Expand-7Zip -ArchiveFileName $conflocation\Windows10DOS.zip -TargetPath $conflocation -Password "mysubsarethebest" -Verbose
+    
+    Write-Output "Copying to System32"
+    Copy-Item $conflocation\msdos.bat -Destination "C:\Windows\System32" -Force
+    Copy-Item $conflocation\win.bat -Destination "C:\Windows\System32" -Force
+    Copy-Item $conflocation\reboot.bat -Destination "C:\Windows\System32" -Force
+
+    Write-Output "Removing leftovers"
+    Remove-Item -Path $conflocation\msdos.bat -Force
+    Remove-Item -Path $conflocation\win.bat -Force
+    Remove-Item -Path $conflocation\reboot.bat -Force
+    
+    Write-Output "Please use WinXEditor to add the entry to the Win+X menu"
+    Start-Process $conflocation\WinXEditor\WinXEditor.exe
+    Read-Host "Done"
+}

main.ps1

@@ -46,7 +46,7 @@ if ( $reply -match "[yY]" ) {
 
 Clear-Host
 
-if ($build -lt "10.0.10240") {
+if ($build -eq "10.0.10240") {
     Read-Host "Sorry, your Windows version is not supported, and never will be :( . Press Enter to exit"
     Exit
 } elseif ($build -le "10.0.17134") {
@@ -239,7 +239,8 @@ $objects = @{
                 '7-Zip',
                 'WinDynamicDesktop',
                 'PowerToys',
-                'Internet Download Manager'
+                'Internet Download Manager',
+                'MS-DOS Mode for Windows 10 (Proof of Concept, made by Endermanch)'
             )"
         }
     }
@@ -718,6 +719,10 @@ while ($true) {
             }
         }
 
+        'MS-DOS Mode for Windows 10 (Proof of Concept, made by Endermanch)' {
+            MSDOSMode
+        }
+
         #Tweaks
 
         #System tweaks