Detect SMB1 version via powershell for all OSes - powershell

Question

My workflow:
check if server is pingable
find if they are domain connected or not and perform a task accordingly. if Operating system 2012 and/or R2 ,2016 or 2019 newer OSes then I will run Get-SmbServerConfiguration cmdlet. if machine is not a part of default domain then else block will run.
if Operating system 2003 or 2008 oldest OSes then I will run Get-Wmi cmdlet. if machine is not a part of default domain then else block will run.
Finally , I will concentanate $results variable.
My question is :
1- How can we get remotely regedit value for 2003 or 2008 oldest OSes IS NOT a part of default domain insie else block?
Also , Condition will be like below.
if SMB1 value is "0" then result will be `false`
if SMB1 value is "1" then result will be `true`
if SMB1 value is not exist then result will be `not exist value`
2- How can I create object properties $SMBAudit variable ? because , I will concentanate all outputs inside $results variable.
$reg = [wmiclass]"\\$computer\root\default:StdRegProv"
$SMBAudit = $reg.GetStringValue($basekey, $subkey, $value).sValue
My desired output :
Computername,SMB1Enabled
Host01,True
Host02,False
I will write so far a script like below. but I am stucking somethings.
Script :
# Computer List
$allComputers = Get-Content .\path\to\computers.txt
read-host -assecurestring | convertfrom-securestring | out-file C:\mysecurestring_domain.txt
read-host -assecurestring | convertfrom-securestring | out-file C:\mysecurestring_local.txt
# Create empty array of results
$Results = #()
# Loop through computers
foreach($computer in $allComputers) {
# check if server is pingable before running the query on the server
if (Test-Connection $computer -Count 1 -Quiet) {
Write-Host "`n`n$computer is online!" -BackgroundColor Green -ForegroundColor Black
}
if(Get-ADComputer -Filter {Name -eq $computer -and OperatingSystem -notlike '*Windows*Server*2003*' -and OperatingSystem -notlike '*Windows*Server*2008*'})
{
#"machine $_ is a part of default domain"
# The command we want to run
$username = "domain01\admin01"
$password = Get-Content 'C:\mysecurestring_domain.txt' | ConvertTo-SecureString
$cred = new-object -typename System.Management.Automation.PSCredential -argumentlist $username, $password
$SMB = Invoke-Command -ComputerName $computer -Credential $cred -ScriptBlock {Get-SmbServerConfiguration | Select EnableSMB1Protocol }
# Create properties
$Properties = #{
# Populate the properties "Computername" and "SMB1Enabled" with variables
Computername = $Computer
SMB1Enabled = $SMB.EnableSMB1Protocol
}
# Add the properties to the result for each object
$Results += New-Object psobject -Property $Properties
}
else
{
#"machine $_ IS NOT a part of default domain"
$username = "localadmin01"
$password = Get-Content 'C:\mysecurestring_local.txt' | ConvertTo-SecureString
$cred = new-object -typename System.Management.Automation.PSCredential -argumentlist $username, $password
$SMB = Invoke-Command -ComputerName $computer -Credential $cred -ScriptBlock {Get-SmbServerConfiguration | Select EnableSMB1Protocol }
# Create properties
$Properties = #{
# Populate the properties "Computername" and "SMB1Enabled" with variables
Computername = $Computer
SMB1Enabled = $SMB.EnableSMB1Protocol
}
# Add the properties to the result for each object
$Results += New-Object psobject -Property $Properties
}
# Oldest OSes
if(Get-ADComputer -Filter {Name -eq $computer -and OperatingSystem -notlike '*Windows*Server*2012*' -and OperatingSystem -notlike '*Windows*Server*2016*' -and OperatingSystem -notlike '*Windows*Server*2019*'})
{
#"machine $_ is a part of default domain"
# The command we want to run
<# HKEY_CLASSES_ROOT (2147483648 (0x80000000))
HKEY_CURRENT_USER (2147483649 (0x80000001))
HKEY_LOCAL_MACHINE (2147483650 (0x80000002))
HKEY_USERS (2147483651 (0x80000003))
HKEY_CURRENT_CONFIG (2147483653 (0x80000005))
#>
$basekey = [uint32]'0x80000002'
$subkey = 'SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters'
$value = 'SMB1'
$reg = [wmiclass]"\\$computer\root\default:StdRegProv"
$SMBAudit = $reg.GetStringValue($basekey, $subkey, $value).sValue
}
else
{
#"machine $_ IS NOT a part of default domain"
}
# Output
$Results | Select-Object Computername, SMB1Enabled | Out-File -Filepath c:\temp\smb1-computers.txt

Answer 1

I think you are over complicating this and although not tested by me, you could try this:
# Computer List
$allComputers = Get-Content '.\path\to\computers.txt'
# get credentials for domain-joined machines and for local machines
$domainCred = Get-Credential -UserName "domain01\admin01" -Message "Please enter the DOMAIN password"
$localCred = Get-Credential -UserName "localadmin01" -Message "Please enter the LOCAL password"
# loop through the list of computers and collect output in variable $Results
$Results = foreach($computer in $allComputers) {
# check if server is pingable before running the query on the server
if (Test-Connection -ComputerName $computer -Count 1 -Quiet) {
Write-Host "$computer is online!" -BackgroundColor Green -ForegroundColor Black
$server = Get-ADComputer -Filter "Name -eq '$computer'" -Properties OperatingSystem -ErrorAction SilentlyContinue
# if domain joined, use $domainCred, otherwise $localCred
if ($server) {
$cred = $domainCred
$version = ([regex]'Windows Server (\d+)').Match($server.OperatingSystem).Groups[1].Value
}
else {
$cred = $localCred
$info = Get-WmiObject -ComputerName $computer -Credential $cred -Class Win32_OperatingSystem
$version = ([regex]'Windows Server (\d+)').Match($info.Caption).Groups[1].Value
}
if ($version -eq '2003') {
# try reading the registry
try {
$RegBase = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $Computer)
$RegKey = $RegBase.OpenSubKey("SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters")
$SMB = $RegKey.GetValue("SMB1")
[PsCustomObject]#{ ComputerName = $computer; SMB1Enabled = ($null -eq $SMB -or [int]$SMB -eq 1) }
}
catch {
[PsCustomObject]#{ ComputerName = $computer; SMB1Enabled = 'Could not read Remote Registry' }
}
finally {
if ($RegBase) { $RegBase.Close() }
if ($RegKey) { $RegKey.Close() }
}
}
elseif ($version -eq '2008') {
# Older OS
try {
# try via WinRM
$SMB = Invoke-Command -ComputerName $computer -Credential $cred -ScriptBlock {
Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters' -Name SMB1
} -ErrorAction Stop
# output an object
[PsCustomObject]#{ ComputerName = $computer; SMB1Enabled = ($null -eq $SMB -or [int]$SMB -eq 1) }
}
catch {
# try reading the registry
try {
$RegBase = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $Computer)
$RegKey = $RegBase.OpenSubKey("SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters")
$SMB = $RegKey.GetValue("SMB1")
[PsCustomObject]#{ ComputerName = $computer; SMB1Enabled = ($null -eq $SMB -or [int]$SMB -eq 1) }
}
catch {
[PsCustomObject]#{ ComputerName = $computer; SMB1Enabled = 'Could not read Remote Registry' }
}
finally {
if ($RegBase) { $RegBase.Close() }
if ($RegKey) { $RegKey.Close() }
}
}
}
else {
# Newer OS
$SMB = Invoke-Command -ComputerName $computer -Credential $cred -ScriptBlock { Get-SmbServerConfiguration | Select-Object EnableSMB1Protocol }
# output an object
[PsCustomObject]#{ ComputerName = $computer; SMB1Enabled = $SMB.EnableSMB1Protocol }
}
}
else {
Write-Warning "Computer $computer is off-line"
# output an object anyway, so that in the CSV it is known that the computer didn't ping
[PsCustomObject]#{ ComputerName = $computer; SMB1Enabled = 'Off-Line' }
}
}
# Output on screen
$Results | Format-Table -AutoSize
# Output to CSV file
$Results | Export-Csv -Path 'c:\temp\smb1-computers.csv' -NoTypeInformation -UseCulture