Connection Blocker

<# https://pastebin.com/kGhTXXA8

This script will add a network firewall rule which will block inbound and outbound traffic for either one or multiple applications.
You can call this script with the parameter $InputObject or just drag and drop the application(s) and/or folder(s) onto the script.

Note:

    - You need administration rights
    - Get-ChildItem is recursive
    - For drag and drop you need to change/add these registry values (https://stackoverflow.com/a/14051969/9248774):

        [HKEY_CLASSES_ROOT\Microsoft.PowerShellScript.1\ShellEx\DropHandler]
        @="{60254CA5-953B-11CF-8C96-00AA00B8708C}"

        [HKEY_CLASSES_ROOT\Microsoft.PowerShellScript.1\Shell\Open\Command]
        @="\"C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe\" -NoLogo -ExecutionPolicy Unrestricted -File \"%1\" %*"



ConnectionBlocker.ps1 [-InputObject] <String[]>

ConnectionBlocker.ps1 -InputObject 'C:\folder\application.exe'
ConnectionBlocker.ps1 -InputObject ('.\application1.exe', '.\application2.exe', '.\folder')

#>

Param (

    [Parameter(ValueFromRemainingArguments=$true)]
    [string[]] $InputObject

)

$Host.UI.RawUI.WindowTitle = 'Connection Blocker'

if (!(New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {

    $InputObject | ForEach-Object {

        [string]$ArgString += "'$_', "

    }

    Start-Process PowerShell -ArgumentList ('-NoExit & {0} -InputObject ' -f $PSCommandPath + $ArgString.TrimEnd(', ')) -Verb RunAs

    Stop-Process -Id $PID

}

if ($InputObject.Count -gt 1) {

    $InputObject | ForEach-Object {

        if ((Get-Item $_) -is [System.IO.DirectoryInfo]) {

            Get-ChildItem $_ -File -Recurse -Include *.exe | ForEach-Object {

                New-NetFirewallRule -DisplayName ($_.Name + ' (Blocked by script)') -Direction Inbound -Program $_ -Action Block >$null
                New-NetFirewallRule -DisplayName ($_.Name + ' (Blocked by script)') -Direction Outbound -Program $_ -Action Block >$null
                Write-Host "Blocked inbound and outbound traffic for '$_'!"

            }

        } elseif ((Get-Item $_) -is [System.IO.FileInfo]) {

            New-NetFirewallRule -DisplayName ($_.Name + ' (Blocked by script)') -Direction Inbound -Program $_ -Action Block >$null
            New-NetFirewallRule -DisplayName ($_.Name + ' (Blocked by script)') -Direction Outbound -Program $_ -Action Block >$null
            Write-Host "Blocked inbound and outbound traffic for '$_'!"

        }
    }

} elseif ((Get-Item ($InputObject -as [string])) -is [System.IO.DirectoryInfo]) {

    Get-ChildItem ($InputObject -as [string]) -File -Recurse -Include *.exe | ForEach-Object {

        New-NetFirewallRule -DisplayName ($_.Name + ' (Blocked by script)') -Direction Inbound -Program $_ -Action Block >$null
        New-NetFirewallRule -DisplayName ($_.Name + ' (Blocked by script)') -Direction Outbound -Program $_ -Action Block >$null
        Write-Host "Blocked inbound and outbound traffic for '$_'!"

    }

} elseif ((Get-Item ($InputObject -as [string])) -is [System.IO.FileInfo]) {

    New-NetFirewallRule -DisplayName ((Get-Item ($InputObject -as [string])).Name + ' (Blocked by script)') -Direction Inbound -Program ($InputObject -as [string]) -Action Block >$null
    New-NetFirewallRule -DisplayName ((Get-Item ($InputObject -as [string])).Name + ' (Blocked by script)') -Direction Outbound -Program ($InputObject -as [string]) -Action Block >$null
    Write-Host "Blocked inbound and outbound traffic for '$InputObject'!"

}

Write-Host -ForegroundColor Green "`nDone!"
Start-Sleep 3
Stop-Process -Id $PID