Powershell script that interfaces with SCCM to wipe out faulty Sophos installs

nuke-sophos.ps1

# Nuke-Sophos
# obliterate all sophos installations in a specified SCCM device group
# Robin Universe [D]
# 02 . 14 . 25

param (
        [string]$collectionName,
        [string[]]$TestComputers
)

$Cred = Get-Credential -Message "Tech Credentials required for PSRemote Shell"

# Get all computer names in the sccm collection
function Get-SCCMCollection($collectionName) {
    $loc = Get-Location
    Set-Location "7DC:\\" 
    $collection = Get-CMCollectionMember -CollectionName $collectionName | Select-Object Name
    Set-Location $loc
    return $collection.Name
}

# Tries to get this party started by using SCCM to wakeup those computers
function Wake-Collection($collectionName) {
    $loc = Get-Location
    Set-Location "7DC:\\" 
    Invoke-CMClientAction -ActionType ClientNotificationWakeUpClientNow -CollectionName $collectionName
    Set-Location $loc
}


# Verifies we are indeed ready to party by checking which computers have woken up
Function Ping-Computer($com){
    $Online = Test-Connection $com -Count 1 -Quiet
    return $Online
}

# Check if a user is logged in so we dont accidentally restart a computer while someone is using it
function Get-LoggedInUser($comp) {
    try {
        $output = (Get-WmiObject -Class win32_computersystem -ComputerName $comp).UserName
    } catch {
        Write-Host " [ $comp ] FAILED TO DETECT USER     " -ForegroundColor Red 
        $output = $Null
    }
    if ($Null -ne $output) { $output = ($output).split("\")[1] }
    return $output
}

# Fuck it up
Function Nuke($OnlineComputers) {
    if ($Null -ne $TestComputers) { $OnlineComputers = $TestComputers }

    foreach ($com in $OnlineComputers){
        Write-Host "`r [ $com ] Checking if computer is online...     " -ForegroundColor Yellow -NoNewline
        
        if (Ping-Computer $com) {
            Write-Host "`r [ $com ] Checking for logged in user...     " -ForegroundColor Yellow -NoNewline
            $User = Get-LoggedInUser $com
            
            if ( $Null -ne $User ) { Write-Host "`r [ $com ] $User is currently logged in! skipping...     " -ForegroundColor Red }
            else {
                Write-Host "`r [ $com ] Attempting PSRemote Connection..." -ForegroundColor Yellow -NoNewline
                try {
                $session = New-PSSession -ComputerName $com -Credential $Cred 
                Invoke-Command -Session $session -ScriptBlock {
                    $ver = [System.Environment]::OSVersion.Version.Build
                    $com = $env:COMPUTERNAME
                    if ($ver -eq 19045){
                        Write-Host "`r [ $com ] VERSION MATCH!                        " -ForegroundColor Green -NoNewline; Start-Sleep 1
                        Write-Host "`r [ $com ] Attempting to run Uninstaller...      " -ForegroundColor Green -NoNewline; Start-Sleep 1
                        Start-Process "C:\Program Files\Sophos\Sophos Endpoint Agent\SophosUninstall.exe" -ArgumentList "--quiet" -Wait
                        Write-Host "`r [ $com ] Removing TaskSeq Flag...              " -ForegroundColor Green -NoNewline; Start-Sleep 1
                        if (Test-Path "C:\TaskSequenceRunning.flg") { Remove-Item -Path "C:\TaskSequenceRunning.flg" -Force }
                    } else {
                        Write-Host "`r [ $com ] VERSION MISMATCH ($ver)               " -ForegroundColor Red; Start-Sleep 1
                    }
                }
                Write-Host "`r [ $com ] Rebooting system and bailing...       " -ForegroundColor Green ; Start-Sleep 1
                Restart-Computer -ComputerName $com -Force -Credential $Cred
                Remove-PSSession -Session $session
                Wake-Collection $collectionName
                }
                catch {
                    Write-Host "`r [ $com ] CONNECTION FAILED. OFFLINE?               " -ForegroundColor Red
                }
            } 
               
            } else {  Write-Host "`r [ $com ] not online!                           " -ForegroundColor Red 
        }
    }
}

Write-Host " [ $collectionName ] Collecting all computer names in group from SCCM...    " -ForegroundColor Yellow
$sccmcollection = Get-SCCMCollection $collectionName
foreach ($com in $sccmcollection){ Write-Host "`r [ $com ]        " -ForegroundColor Green -NoNewline; Start-Sleep -Milliseconds 25}
Write-Host ( "`r [ $collectionName ] " + $sccmcollection.Count + " computers detected.  " )-ForegroundColor Green

Write-Host " [ $collectionName ] Invoking WoL on computer group...                      " -ForegroundColor Yellow
Wake-Collection $collectionName

$t = 0; while ($t -lt 60) {
    Write-Host "`r [ $t ] Waiting 1 Minute to let computers wake up... (press Q to skip)" -ForegroundColor Yellow -NoNewline; Start-Sleep 1; $t++
    if ([System.Console]::KeyAvailable) {$key = [System.Console]::ReadKey($true); if ($key.KeyChar -eq 'q'){$t=59}}
}

Write-Host "`n [ FLIGHT CHECK PASSED - LETS FUCK IT UP ] " -ForegroundColor Green; Start-Sleep 1

#foreach ($com in $sccmcollection) {$status = (Ping-Computer $com); Write-Host $com - Online? $status }

Nuke $sccmcollection