Reset-KerberosKeys.ps1

<#
.SYNOPSIS
This cmdlet is used to reset kerberos keys used by an online Exchange environement.

.DESCRIPTION
This cmdlet was created for sysadmins and does not require any switches. Best used if run automatically using Windows Task Scheduler.

.NOTES
Author: Robert H. Osborne
Alias: tobor
Contact: rosborne@osbornepro.com


.LINK
https://osbornepro.com
https://writeups.osbornepro.com
https://btpssecpack.osbornepro.com
https://github.com/tobor88
https://gitlab.com/tobor88
https://www.powershellgallery.com/profiles/tobor
https://www.linkedin.com/in/roberthosborne/
https://www.credly.com/users/roberthosborne/badges
https://www.hackthebox.eu/profile/52286

.EXAMPLE
Reset-KerbKeys -Verbose

#>
Function Reset-KerbKeys {
    [CmdletBinding()]
        param()

  BEGIN {

      $Email = alert.email@osbornepro.com
      $SmtpServer = smtp.derp.com

      $User = "Robo.username@osbornepro.com"
      $PasswordFile = "C:\Users\Public\Documents\Keys\passwordfile.txt"
      $KeyFile = "C:\Users\Public\Documents\Keys\passwordkeyfile.txt"
      $key = Get-Content -Path $KeyFile
      $cred1 = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList $User, (Get-Content -Path $PasswordFile | ConvertTo-SecureString -Key $key)

      Install-Module AzureAD -Credential $cred2 -Force
      Write-Verbose "Discovering location of AzureADSSO.psd1"

      $AzureFile = (Get-ChildItem -Path "C:\" -Filter "AzureADSSO.psd1" -Recurse -Force -ErrorAction SilentlyContinue).FullName

  } # End Begin
  PROCESS {

  # USER1 needs to be a global administrator

      Write-Verbose "Importing AzureADSSO.psd1 from directory $AzureFile"
      Import-Module "$AzureFile" -Force
      New-AzureADSSOAuthenticationContext -CloudCredentials $cred1
      Write-Verbose 'Checking for errors.'
      Update-AzureADSSOForest -OnPremCredentials $cred1

  } # End Process
  END {

      $Status = Get-AzureADSSOStatus
      Send-MailMessage -To $Email -From $Email -Subject "Kerberos Keys Rotated" -Body "$Satus" -SmtpServer $SmtpServer -Priority Normal

   } # End End

} # End Function Reset-KerbKeys