nasty.ps1

Import-Module WebAdministration; 

$ip = '0.0.0.0'
$port = 443
$sitename = ""
$certificate = ""


if((Test-Path IIS:\SslBindings\$ip!$port) -eq $true) {
    $site = Get-Website | Where-Object { $_.Name -eq "$sitename" }
    $certsAttachedToSite = Get-ChildItem IIS:\SSLBindings | ? { $site | Select-Object { $_ -contains $_.Sites.Value }} | % { $_.Thumbprint }
    $certificate = Get-ChildItem CERT:\LocalMachine\My | ? { $certsAttachedToSite -contains $_.Thumbprint} | Where-Object { $_.Thumbprint -eq "$certificate" }
    if ($certificate -ne $null ){
        Write-Host "Certificate needs changed"
    }
    else {
        "We have the correct  certificate"
    }
 } 
 else { 
    Write-Host "No Binding exists" 
 }