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AdAudit.ps1
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<#
.NOTES
Author : phillips321.co.uk
Creation Date: 16/08/2018
Script Name : ADAudit.ps1
.SYNOPSIS
PowerShell Script to perform a quick AD audit
.DESCRIPTION
o Compatibility :
* PowerShell v2.0 (PowerShell 5.0 needed if you intend to use DSInternals PowerShell module)
* Tested on Windows Server 2008R2/2012/2012R2/2016/2019/2022
* All languages (you may need to adjust $AdministratorTranslation variable)
o Changelog :
[x] Version 5.8 - 27/03/2023
* Updated switches, users can now select functions, or run -all with exclusions
* Added LDAP security checks
[ ] Version 5.7 - 11/03/2023
* Added ACL Checks
[ ] Version 5.6 - 09/03/2023
* Added kerberoasting checks
* Added ASREProasting Checks
[ ] Version 5.5 - 08/03/2023
* ADCS vulnerabilities added, checks for ESC1,2,3,4 and 8.
[ ] Version 5.4 - 16/08/2022
* Added nessus output tags for LAPS
* Added nessus output for GPO issues
[ ] Version 5.3 - 07/03/2022
* Added SamAccountName to Get-PrivilegedGroupMembership output
* Swapped some write-host to write-both so it's captured in the consolelog.txt
[ ] Version 5.2 - 28/01/2022
* Enhanced Get-LAPSStatus
* Added news checks (AD services + Windows Update + NTP source + Computer/User container + RODC + Locked accounts + Password Quality + SYSVOL & NETLOGON share presence)
* Added support for WS 2022
* Fix OS version difference check for WS 2008
* Fix Write-Progress not disappearing when done
[ ] Version 5.1
* Added check for newly created users and groups
* Added check for replication mechanism
* Added check for Recycle Bin
* Fix ProtectedUsers for WS 2008
[ ] Version 5.0
* Make the script compatible with other language than English
* Fix the cpassword search in GPO
* Fix Get-ACL bad syntax error
* Fix Get-DNSZoneInsecure for WS 2008
[ ] Version 4.9
* Bug fix in checking password comlexity
[ ] Version 4.8
* Added checks for vista, win7 and 2008 old operating systems
* Added insecure DNS zone checks
[ ] Version 4.7
* Added powershel-v2 suport and fixed array issue
[ ] Version 4.6
* Fixed potential division by zero
[ ] Version 4.5
* PR to resolve count issue when count = 1
[ ] Version 4.4
* Reinstated nessus fix and put output in a list for findings
* Changed Get-AdminSDHolders with Get-PrivilegedGroupAccounts
[ ] Version 4.3
* Temp fix with nessus output
[ ] Version 4.2
* Bug fix on cpassword count
[ ] Version 4.1
* Loads of fixes
* Works with Powershellv2 again now
* Filtered out disabled accounts
* Improved domain trusts checking
* OUperms improvements and filtering
* Check for w2k
* Fixed typos/spelling and various other fixes
[ ] Version 4.0
* Added XML output for import to CheckSecCanopy
[ ] Version 3.5
* Added KB more references for internal use
[ ] Version 3.4
* Added KB references for internal use
[ ] Version 3.3
* Added a greater level of accuracy to Inactive Accounts (thanks exceedio)
[ ] Version 3.2
* Added search for DCs not owned by Domain Admins group
[ ] Version 3.1
* Added progress to functions that have count
* Added check for transitive trusts
[ ] Version 3.0
* Added ability to choose functions before runtime
* Cleaned up get-ouperms output
[ ] Version 2.5
* Bug fixes to version check for 2012R2 or greater specific checks
[ ] Version 2.4
* Forked project
* Added Get-OUPerms, Get-LAPSStatus, Get-AdminSDHolders, Get-ProtectedUsers and Get-AuthenticationPoliciesAndSilos functions
* Also added FineGrainedPasswordPolicies to Get-PasswordPolicy and changed order slightly
[ ] Version 2.3
* Added more useful user output to .txt files (Cheers DK)
[ ] Version 2.2
* Minor typo fix
[ ] Version 2.1
* Added check for null sessions
[ ] Version 2.0
* Multiple Additions and knocked off lots of the todo list
[ ] Version 1.9
* Fixed bug, that used Administrator account name instead of UID 500 and a bug with inactive accounts timespan
[ ] Version 1.8
* Added check for last time 'Administrator' account logged on
[ ] Version 1.6
* Added Get-FunctionalLevel and krbtgt password last changed check
[ ] Version 1.5
* Added Get-HostDetails to output simple info like username, hostname, etc...
[ ] Version 1.4
* Added Get-WinVersion version to assist with some checks (SMBv1 currently)
[ ] Version 1.3
* Added XML output for GPO (for offline processing using grouper https://github.com/l0ss/Grouper/blob/master/grouper.psm1)
[ ] Version 1.2
* Added check for modules
[ ] Version 1.1
* Fixed bug where SYSVOL research returns empty
[ ] Version 1.0
* First release
.EXAMPLE
PS> ADAudit.ps1 -installdeps -all
Install external features and launch all checks
.EXAMPLE
PS> ADAudit.ps1 -all
Launch all checks (but do not install external modules)
.EXAMPLE
PS> ADAudit.ps1 -installdeps
Installs optionnal features (DSInternals)
.EXAMPLE
PS> ADAudit.ps1 -hostdetails -domainaudit
Retrieves hostname and other useful audit info
Retrieves information about the AD such as functional level
#>
[CmdletBinding()]
Param (
[switch]$installdeps = $false,
[switch]$hostdetails = $false,
[switch]$domainaudit = $false,
[switch]$trusts = $false,
[switch]$accounts = $false,
[switch]$passwordpolicy = $false,
[switch]$ntds = $false,
[switch]$oldboxes = $false,
[switch]$gpo = $false,
[switch]$ouperms = $false,
[switch]$laps = $false,
[switch]$authpolsilos = $false,
[switch]$insecurednszone = $false,
[switch]$recentchanges = $false,
[switch]$adcs = $false,
[switch]$spn = $false,
[switch]$asrep = $false,
[switch]$acl = $false,
[switch]$ldapsecurity = $false,
[switch]$all = $false,
[string[]]$exclude = @(),
[string]$select
)
$selectedChecks = @()
if ($select) { $selectedChecks = $select.Split(',') }
$versionnum = "v5.8"
$AdministratorTranslation = @("Administrator", "Administrateur", "Administrador")#If missing put the default Administrator name for your own language here
Function Get-Variables() {
#Retrieve group names and OS version
$script:OSVersion = (Get-Itemproperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name ProductName).ProductName
$script:Administrators = (Get-ADGroup -Identity S-1-5-32-544).SamAccountName
$script:Users = (Get-ADGroup -Identity S-1-5-32-545).SamAccountName
$script:DomainAdminsSID = ((Get-ADDomain -Current LoggedOnUser).domainsid.value) + "-512"
$script:DomainUsersSID = ((Get-ADDomain -Current LoggedOnUser).domainsid.value) + "-513"
$script:DomainControllersSID = ((Get-ADDomain -Current LoggedOnUser).domainsid.value) + "-516"
$script:SchemaAdminsSID = ((Get-ADDomain -Current LoggedOnUser).domainsid.value) + "-518"
$script:EnterpriseAdminsSID = ((Get-ADDomain -Current LoggedOnUser).domainsid.value) + "-519"
$script:EveryOneSID = New-Object System.Security.Principal.SecurityIdentifier "S-1-1-0"
$script:EntrepriseDomainControllersSID = New-Object System.Security.Principal.SecurityIdentifier "S-1-5-9"
$script:AuthenticatedUsersSID = New-Object System.Security.Principal.SecurityIdentifier "S-1-5-11"
$script:SystemSID = New-Object System.Security.Principal.SecurityIdentifier "S-1-5-18"
$script:LocalServiceSID = New-Object System.Security.Principal.SecurityIdentifier "S-1-5-19"
$script:DomainAdmins = (Get-ADGroup -Identity $DomainAdminsSID).SamAccountName
$script:DomainUsers = (Get-ADGroup -Identity $DomainUsersSID).SamAccountName
$script:DomainControllers = (Get-ADGroup -Identity $DomainControllersSID).SamAccountName
$script:SchemaAdmins = (Get-ADGroup -Identity $SchemaAdminsSID).SamAccountName
$script:EnterpriseAdmins = (Get-ADGroup -Identity $EnterpriseAdminsSID).SamAccountName
$script:EveryOne = $EveryOneSID.Translate([System.Security.Principal.NTAccount]).Value
$script:EntrepriseDomainControllers = $EntrepriseDomainControllersSID.Translate([System.Security.Principal.NTAccount]).Value
$script:AuthenticatedUsers = $AuthenticatedUsersSID.Translate([System.Security.Principal.NTAccount]).Value
$script:System = $SystemSID.Translate([System.Security.Principal.NTAccount]).Value
$script:LocalService = $LocalServiceSID.Translate([System.Security.Principal.NTAccount]).Value
Write-Both " [+] Administrators : $Administrators"
Write-Both " [+] Users : $Users"
Write-Both " [+] Domain Admins : $DomainAdmins"
Write-Both " [+] Domain Users : $DomainUsers"
Write-Both " [+] Domain Controllers : $DomainControllers"
Write-Both " [+] Schema Admins : $SchemaAdmins"
Write-Both " [+] Enterprise Admins : $EnterpriseAdmins"
Write-Both " [+] Every One : $EveryOne"
Write-Both " [+] Entreprise Domain Controllers: $EntrepriseDomainControllers"
Write-Both " [+] Authenticated Users : $AuthenticatedUsers"
Write-Both " [+] System : $System"
Write-Both " [+] Local Service : $LocalService"
}
Function Write-Both() {
#Writes to console screen and output file
Write-Host "$args"
Add-Content -Path "$outputdir\consolelog.txt" -Value "$args"
}
Function Write-Nessus-Header() {
#Creates nessus XML file header
Add-Content -Path "$outputdir\adaudit.nessus" -Value "<?xml version=`"1.0`" ?><AdAudit>"
Add-Content -Path "$outputdir\adaudit.nessus" -Value "<Report name=`"$env:ComputerName`" xmlns:cm=`"http://www.nessus.org/cm`">"
Add-Content -Path "$outputdir\adaudit.nessus" -Value "<ReportHost name=`"$env:ComputerName`"><HostProperties></HostProperties>"
}
Function Write-Nessus-Finding( [string]$pluginname, [string]$pluginid, [string]$pluginexample) {
Add-Content -Path "$outputdir\adaudit.nessus" -Value "<ReportItem port=`"0`" svc_name=`"`" protocol=`"`" severity=`"0`" pluginID=`"ADAudit_$pluginid`" pluginName=`"$pluginname`" pluginFamily=`"Windows`">"
Add-Content -Path "$outputdir\adaudit.nessus" -Value "<description>There's an issue with $pluginname</description>"
Add-Content -Path "$outputdir\adaudit.nessus" -Value "<plugin_type>remote</plugin_type><risk_factor>Low</risk_factor>"
Add-Content -Path "$outputdir\adaudit.nessus" -Value "<solution>CCS Recommends fixing the issues with $pluginname on the host</solution>"
Add-Content -Path "$outputdir\adaudit.nessus" -Value "<synopsis>There's an issue with the $pluginname settings on the host</synopsis>"
Add-Content -Path "$outputdir\adaudit.nessus" -Value "<plugin_output>$pluginexample</plugin_output></ReportItem>"
}
Function Write-Nessus-Footer() {
Add-Content -Path "$outputdir\adaudit.nessus" -Value "</ReportHost></Report></AdAudit>"
}
Function Get-DNSZoneInsecure {
#Check DNS zones allowing insecure updates
if ($OSVersion -notlike "Windows Server 2008*") {
$count = 0
$progresscount = 0
$insecurezones = Get-DnsServerZone | Where-Object { $_.DynamicUpdate -like '*nonsecure*' }
$totalcount = ($insecurezones | Measure-Object | Select-Object Count).count
if ($totalcount -gt 0) {
foreach ($insecurezone in $insecurezones ) {
Add-Content -Path "$outputdir\insecure_dns_zones.txt" -Value "The DNS Zone $($insecurezone.ZoneName) allows insecure updates ($($insecurezone.DynamicUpdate))"
}
Write-Both " [!] There were $totalcount DNS zones configured to allow insecure updates (KB842)"
Write-Nessus-Finding "InsecureDNSZone" "KB842" ([System.IO.File]::ReadAllText("$outputdir\insecure_dns_zones.txt"))
}
}
else {
Write-Both " [-] Not Windows 2012 or above, skipping Get-DNSZoneInsecure check."
}
}
Function Get-OUPerms {
#Check for non-standard perms for authenticated users, domain users, users and everyone groups
$count = 0
$progresscount = 0
$objects = (Get-ADObject -Filter *)
$totalcount = ($objects | Measure-Object | Select-Object Count).count
foreach ($object in $objects) {
if ($totalcount -eq 0) { break }
$progresscount++
Write-Progress -Activity "Searching for non standard permissions for authenticated users..." -Status "Currently identifed $count" -PercentComplete ($progresscount / $totalcount * 100)
if ($OSVersion -like "Windows Server 2019*" -or $OSVersion -like "Windows Server 2022*") {
$output = (Get-Acl "Microsoft.ActiveDirectory.Management.dll\ActiveDirectory:://RootDSE/$object").Access | Where-Object { ($_.IdentityReference -eq "$AuthenticatedUsers") -or ($_.IdentityReference -eq "$EveryOne") -or ($_.IdentityReference -like "*\$DomainUsers") -or ($_.IdentityReference -eq "BUILTIN\$Users") } | Where-Object { ($_.ActiveDirectoryRights -ne 'GenericRead') -and ($_.ActiveDirectoryRights -ne 'GenericExecute') -and ($_.ActiveDirectoryRights -ne 'ExtendedRight') -and ($_.ActiveDirectoryRights -ne 'ReadControl') -and ($_.ActiveDirectoryRights -ne 'ReadProperty') -and ($_.ActiveDirectoryRights -ne 'ListObject') -and ($_.ActiveDirectoryRights -ne 'ListChildren') -and ($_.ActiveDirectoryRights -ne 'ListChildren, ReadProperty, ListObject') -and ($_.ActiveDirectoryRights -ne 'ReadProperty, GenericExecute') -and ($_.AccessControlType -ne 'Deny') }
}
else {
$output = (Get-Acl AD:$object).Access | Where-Object { ($_.IdentityReference -eq "$AuthenticatedUsers") -or ($_.IdentityReference -eq "$EveryOne") -or ($_.IdentityReference -like "*\$DomainUsers") -or ($_.IdentityReference -eq "BUILTIN\$Users") } | Where-Object { ($_.ActiveDirectoryRights -ne 'GenericRead') -and ($_.ActiveDirectoryRights -ne 'GenericExecute') -and ($_.ActiveDirectoryRights -ne 'ExtendedRight') -and ($_.ActiveDirectoryRights -ne 'ReadControl') -and ($_.ActiveDirectoryRights -ne 'ReadProperty') -and ($_.ActiveDirectoryRights -ne 'ListObject') -and ($_.ActiveDirectoryRights -ne 'ListChildren') -and ($_.ActiveDirectoryRights -ne 'ListChildren, ReadProperty, ListObject') -and ($_.ActiveDirectoryRights -ne 'ReadProperty, GenericExecute') -and ($_.AccessControlType -ne 'Deny') }
}
if ($output -ne $null) {
$count++
Add-Content -Path "$outputdir\ou_permissions.txt" -Value "OU: $object"
Add-Content -Path "$outputdir\ou_permissions.txt" -Value "[!] Rights: $($output.IdentityReference) $($output.ActiveDirectoryRights) $($output.AccessControlType)"
}
}
Write-Progress -Activity "Searching for non standard permissions for authenticated users..." -Status "Ready" -Completed
if ($count -gt 0) {
Write-Both " [!] Issue identified, see $outputdir\ou_permissions.txt"
Write-Nessus-Finding "OUPermissions" "KB551" ([System.IO.File]::ReadAllText("$outputdir\ou_permissions.txt"))
}
}
Function Get-LAPSStatus {
#Check for presence of LAPS in domain
try {
Get-ADObject "CN=ms-Mcs-AdmPwd,CN=Schema,CN=Configuration,$((Get-ADDomain).DistinguishedName)" -ErrorAction Stop | Out-Null
Write-Both " [+] LAPS Installed in domain"
}
catch {
Write-Both " [!] LAPS Not Installed in domain (KB258)"
Write-Nessus-Finding "LAPSMissing" "KB258" "LAPS Not Installed in domain"
}
if (Get-Module -ListAvailable -Name AdmPwd.PS) {
Import-Module AdmPwd.PS
$count = 0
$missingComputers = (Get-ADComputer -Filter { ms-Mcs-AdmPwd -notlike "*" }).Name
$totalcount = ($missingComputers | Measure-Object | Select-Object Count).count
if ($totalcount -gt 0) {
$missingComputers | Add-Content -Path $outputdir\laps_missing-computers.txt
Write-Both " [!] Some computers/servers don't have LAPS password set, see $outputdir\laps_missing-computers.txt"
Write-Nessus-Finding "LAPSMissingorExpired" "KB258" ([System.IO.File]::ReadAllText("$outputdir\laps_missing-computers.txt"))
}
$count = 0
$computersList = (Get-ADComputer -Filter { ms-Mcs-AdmPwdExpirationTime -like "*" } -Properties ms-Mcs-AdmPwdExpirationTime | select Name, ms-Mcs-AdmPwdExpirationTime)
foreach ($computer in $computersList ) {
$expiration = [datetime]::FromFileTime($computer.'ms-Mcs-AdmPwdExpirationTime')
$today = Get-Date
if ($expiration -lt $today) {
$count++
"$($computer.Name) password is expired since $expiration" | Add-Content -Path $outputdir\laps_expired-passwords.txt
}
}
if ($count -gt 0) {
Write-Both " [!] Some computers/servers have LAPS password expired, see $outputdir\laps_expired-passwords.txt"
Write-Nessus-Finding "LAPSMissingorExpired" "KB258" ([System.IO.File]::ReadAllText("$outputdir\laps_expired-passwords.txt"))
}
Get-ADOrganizationalUnit -Filter * | Find-AdmPwdExtendedRights -PipelineVariable OU | foreach {
$_.ExtendedRightHolders | foreach {
if ($_ -ne $System) {
"$_ can read password attribute of $($Ou.ObjectDN)" | Add-Content -Path $outputdir\laps_read-extendedrights.txt
}
}
}
Write-Both " [!] LAPS extended rights exported, see $outputdir\laps_read-extendedrights.txt"
Write-Nessus-Finding "LAPSMissingorExpired" "KB258" ([System.IO.File]::ReadAllText("$outputdir\laps_read-extendedrights.txt"))
}
else {
Write-Both " [!] LAPS PowerShell module is not installed, can't run LAPS checks on this DC"
}
}
Function Get-PrivilegedGroupAccounts {
#Lists users in Admininstrators, DA and EA groups
[array]$privilegedusers = @()
$privilegedusers += Get-ADGroupMember $Administrators -Recursive
$privilegedusers += Get-ADGroupMember $DomainAdmins -Recursive
$privilegedusers += Get-ADGroupMember $EnterpriseAdmins -Recursive
$privusersunique = $privilegedusers | Sort-Object -Unique
$count = 0
$totalcount = ($privilegedusers | Measure-Object | Select-Object Count).count
foreach ($account in $privusersunique) {
if ($totalcount -eq 0) { break }
Write-Progress -Activity "Searching for users who are in privileged groups..." -Status "Currently identifed $count" -PercentComplete ($count / $totalcount * 100)
Add-Content -Path "$outputdir\accounts_userPrivileged.txt" -Value "$($account.SamAccountName) ($($account.Name))"
$count++
}
Write-Progress -Activity "Searching for users who are in privileged groups..." -Status "Ready" -Completed
if ($count -gt 0) {
Write-Both " [!] There are $count accounts in privileged groups, see accounts_userPrivileged.txt (KB426)"
Write-Nessus-Finding "AdminSDHolders" "KB426" ([System.IO.File]::ReadAllText("$outputdir\accounts_userPrivileged.txt"))
}
}
Function Get-ProtectedUsers {
#Lists users in "Protected Users" group (2012R2 and above)
$DomainLevel = (Get-ADDomain).domainMode
if ($DomainLevel -eq "Windows2012Domain" -or $DomainLevel -eq "Windows2012R2Domain" -or $DomainLevel -eq "Windows2016Domain") {
#Checking for 2012 or above domain functional level
$ProtectedUsersSID = ((Get-ADDomain -Current LoggedOnUser).domainsid.value) + "-525"
$ProtectedUsers = (Get-ADGroup -Identity $ProtectedUsersSID).SamAccountName
$count = 0
$protectedaccounts = (Get-ADGroup $ProtectedUsers -Properties members).Members
$totalcount = ($protectedaccounts | Measure-Object | Select-Object Count).count
foreach ($members in $protectedaccounts) {
if ($totalcount -eq 0) { break }
Write-Progress -Activity "Searching for protected users..." -Status "Currently identifed $count" -PercentComplete ($count / $totalcount * 100)
$account = Get-ADObject $members -Properties SamAccountName
Add-Content -Path "$outputdir\accounts_protectedusers.txt" -Value "$($account.SamAccountName) ($($account.Name))"
$count++
}
Write-Progress -Activity "Searching for protected users..." -Status "Ready" -Completed
if ($count -gt 0) {
Write-Both " [!] There are $count accounts in the 'Protected Users' group, see accounts_protectedusers.txt"
Write-Nessus-Finding "ProtectedUsers" "KB549" ([System.IO.File]::ReadAllText("$outputdir\accounts_protectedusers.txt"))
}
}
else { Write-Both " [-] Not Windows 2012 Domain Functional level or above, skipping Get-ProtectedUsers check." }
}
Function Get-AuthenticationPoliciesAndSilos {
#Lists any authentication policies and silos (2012R2 and above)
if ([single](Get-WinVersion) -ge [single]6.3) {
#NT6.2 or greater detected so running this script
$count = 0
foreach ($policy in Get-ADAuthenticationPolicy -Filter *) {
Write-Both " [!] Found $policy Authentication Policy"
$count++
}
if ($count -lt 1) {
Write-Both " [!] There were no AD Authentication Policies found in the domain"
}
$count = 0
foreach ($policysilo in Get-ADAuthenticationPolicySilo -Filter *) {
Write-Both " [!] Found $policysilo Authentication Policy Silo"
$count++
}
if ($count -lt 1) {
Write-Both " [!] There were no AD Authentication Policy Silos found in the domain"
}
}
}
Function Get-MachineAccountQuota {
#Get number of machines a user can add to a domain
$MachineAccountQuota = (Get-ADDomain | select -ExpandProperty DistinguishedName | Get-ADObject -Property 'ms-DS-MachineAccountQuota' | select -ExpandProperty ms-DS-MachineAccountQuota)
if ($MachineAccountQuota -gt 0) {
Write-Both " [!] Domain users can add $MachineAccountQuota devices to the domain! (KB251)"
Write-Nessus-Finding "DomainAccountQuota" "KB251" "Domain users can add $MachineAccountQuota devices to the domain"
}
}
Function Get-PasswordPolicy {
Write-Both " [+] Checking default password policy"
if (!(Get-ADDefaultDomainPasswordPolicy).ComplexityEnabled) {
Write-Both " [!] Password Complexity not enabled (KB262)"
Write-Nessus-Finding "PasswordComplexity" "KB262" "Password Complexity not enabled"
}
if ((Get-ADDefaultDomainPasswordPolicy).LockoutThreshold -lt 5) {
Write-Both " [!] Lockout threshold is less than 5, currently set to $((Get-ADDefaultDomainPasswordPolicy).LockoutThreshold) (KB263)"
Write-Nessus-Finding "LockoutThreshold" "KB263" "Lockout threshold is less than 5, currently set to $((Get-ADDefaultDomainPasswordPolicy).LockoutThreshold)"
}
if ((Get-ADDefaultDomainPasswordPolicy).MinPasswordLength -lt 14) {
Write-Both " [!] Minimum password length is less than 14, currently set to $((Get-ADDefaultDomainPasswordPolicy).MinPasswordLength) (KB262)"
Write-Nessus-Finding "PasswordLength" "KB262" "Minimum password length is less than 14, currently set to $((Get-ADDefaultDomainPasswordPolicy).MinPasswordLength)"
}
if ((Get-ADDefaultDomainPasswordPolicy).ReversibleEncryptionEnabled) {
Write-Both " [!] Reversible encryption is enabled"
}
if ((Get-ADDefaultDomainPasswordPolicy).MaxPasswordAge -eq "00:00:00") {
Write-Both " [!] Passwords do not expire (KB254)"
Write-Nessus-Finding "PasswordsDoNotExpire" "KB254" "Passwords do not expire"
}
if ((Get-ADDefaultDomainPasswordPolicy).PasswordHistoryCount -lt 12) {
Write-Both " [!] Passwords history is less than 12, currently set to $((Get-ADDefaultDomainPasswordPolicy).PasswordHistoryCount) (KB262)"
Write-Nessus-Finding "PasswordHistory" "KB262" "Passwords history is less than 12, currently set to $((Get-ADDefaultDomainPasswordPolicy).PasswordHistoryCount)"
}
if ((Get-ItemProperty -Path HKLM:\SYSTEM\CurrentControlSet\Control\Lsa).NoLmHash -eq 0) {
Write-Both " [!] LM Hashes are stored! (KB510)"
Write-Nessus-Finding "LMHashesAreStored" "KB510" "LM Hashes are stored"
}
Write-Both " [-] Finished checking default password policy"
Write-Both " [+] Checking fine-grained password policies if they exist"
foreach ($finegrainedpolicy in Get-ADFineGrainedPasswordPolicy -Filter *) {
$finegrainedpolicyappliesto = $finegrainedpolicy.AppliesTo
Write-Both " [!] Policy: $finegrainedpolicy"
Write-Both " [!] AppliesTo: $($finegrainedpolicyappliesto)"
if (!($finegrainedpolicy).PasswordComplexity) {
Write-Both " [!] Password Complexity not enabled (KB262)"
Write-Nessus-Finding "PasswordComplexity" "KB262" "Password Complexity not enabled for $finegrainedpolicy"
}
if (($finegrainedpolicy).LockoutThreshold -lt 5) {
Write-Both " [!] Lockout threshold is less than 5, currently set to $($finegrainedpolicy).LockoutThreshold) (KB263)"
Write-Nessus-Finding "LockoutThreshold" "KB263" " Lockout threshold for $finegrainedpolicy is less than 5, currently set to $(($finegrainedpolicy).LockoutThreshold)"
}
if (($finegrainedpolicy).MinPasswordLength -lt 14) {
Write-Both " [!] Minimum password length is less than 14, currently set to $(($finegrainedpolicy).MinPasswordLength) (KB262)"
Write-Nessus-Finding "PasswordLength" "KB262" "Minimum password length for $finegrainedpolicy is less than 14, currently set to $(($finegrainedpolicy).MinPasswordLength)"
}
if (($finegrainedpolicy).ReversibleEncryptionEnabled) {
Write-Both " [!] Reversible encryption is enabled"
}
if (($finegrainedpolicy).MaxPasswordAge -eq "00:00:00") {
Write-Both " [!] Passwords do not expire (KB254)"
}
if (($finegrainedpolicy).PasswordHistoryCount -lt 12) {
Write-Both " [!] Passwords history is less than 12, currently set to $(($finegrainedpolicy).PasswordHistoryCount) (KB262)"
Write-Nessus-Finding "PasswordHistory" "KB262" "Passwords history for $finegrainedpolicy is less than 12, currently set to $(($finegrainedpolicy).PasswordHistoryCount)"
}
}
Write-Both " [-] Finished checking fine-grained password policy"
}
Function Get-NULLSessions {
if ((Get-ItemProperty -Path HKLM:\SYSTEM\CurrentControlSet\Control\Lsa).RestrictAnonymous -eq 0) {
Write-Both " [!] RestrictAnonymous is set to 0! (KB81)"
Write-Nessus-Finding "NullSessions" "KB81" " RestrictAnonymous is set to 0"
}
if ((Get-ItemProperty -Path HKLM:\SYSTEM\CurrentControlSet\Control\Lsa).RestrictAnonymousSam -eq 0) {
Write-Both " [!] RestrictAnonymousSam is set to 0! (KB81)"
Write-Nessus-Finding "NullSessions" "KB81" " RestrictAnonymous is set to 0"
}
if ((Get-ItemProperty -Path HKLM:\SYSTEM\CurrentControlSet\Control\Lsa).everyoneincludesanonymous -eq 1) {
Write-Both " [!] EveryoneIncludesAnonymous is set to 1! (KB81)"
Write-Nessus-Finding "NullSessions" "KB81" "EveryoneIncludesAnonymous is set to 1"
}
}
Function Get-DomainTrusts {
#Lists domain trusts if they are bad
foreach ($trust in (Get-ADObject -Filter { objectClass -eq "trustedDomain" } -Properties TrustPartner, TrustDirection, trustType, trustAttributes)) {
if ($trust.TrustDirection -eq 2) {
if ($trust.TrustAttributes -eq 1 -or $trust.TrustAttributes -eq 4) {
#1 means trust is non-transitive, 4 is external so we check for anything but that
Write-Both " [!] The domain $($trust.Name) is trusted by $env:UserDomain! (KB250)"
Write-Nessus-Finding "DomainTrusts" "KB250" "The domain $($trust.Name) is trusted by $env:UserDomain."
}
else {
Write-Both " [!] The domain $($trust.Name) is trusted by $env:UserDomain and it is Transitive! (KB250)"
Write-Nessus-Finding "DomainTrusts" "KB250" "The domain $($trust.Name) is trusted by $env:UserDomain and it is Transitive!"
}
}
if ($trust.TrustDirection -eq 3) {
if ($trust.TrustAttributes -eq 1 -or $trust.TrustAttributes -eq 4) {
#1 means trust is non-transitive, 4 is external so we check for anything but that
Write-Both " [!] The domain $($trust.Name) is trusted by $env:UserDomain! (KB250)"
Write-Nessus-Finding "DomainTrusts" "KB250" "The domain $($trust.Name) is trusted by $env:UserDomain."
}
else {
Write-Both " [!] The domain $($trust.Name) is trusted by $env:UserDomain and it is Transitive! (KB250)"
Write-Nessus-Finding "DomainTrusts" "KB250" "The domain $($trust.Name) is trusted by $env:UserDomain and it is Transitive!"
}
}
}
}
Function Get-WinVersion {
$WinVersion = [single]([string][environment]::OSVersion.Version.Major + "." + [string][environment]::OSVersion.Version.Minor)
return [single]$WinVersion
}
Function Get-SMB1Support {
#Check if server supports SMBv1
if ([single](Get-WinVersion) -le [single]6.1) {
#NT6.1 or less detected so checking reg key
if (!(Get-ItemProperty -Path HKLM:\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters).SMB1 -eq 0) {
Write-Both " [!] SMBv1 is not disabled (KB290)"
Write-Nessus-Finding "SMBv1Support" "KB290" "SMBv1 is enabled"
}
}
elseif ([single](Get-WinVersion) -ge [single]6.2) {
#NT6.2 or greater detected so using powershell function
if ((Get-SmbServerConfiguration).EnableSMB1Protocol) {
Write-Both " [!] SMBv1 is enabled! (KB290)"
Write-Nessus-Finding "SMBv1Support" "KB290" "SMBv1 is enabled"
}
}
}
Function Get-UserPasswordNotChangedRecently {
#Reports users that haven't changed passwords in more than 90 days
$count = 0
$DaysAgo = (Get-Date).AddDays(-90)
$accountsoldpasswords = Get-ADUser -Filter { PwdLastSet -lt $DaysAgo -and Enabled -eq "true" } -Properties PasswordLastSet
$totalcount = ($accountsoldpasswords | Measure-Object | Select-Object Count).count
foreach ($account in $accountsoldpasswords) {
if ($totalcount -eq 0) { break }
Write-Progress -Activity "Searching for passwords older than 90days..." -Status "Currently identifed $count" -PercentComplete ($count / $totalcount * 100)
if ($account.PasswordLastSet) {
$datelastchanged = $account.PasswordLastSet
}
else {
$datelastchanged = "Never"
}
Add-Content -Path "$outputdir\accounts_with_old_passwords.txt" -Value "User $($account.SamAccountName) ($($account.Name)) has not changed their password since $datelastchanged"
$count++
}
Write-Progress -Activity "Searching for passwords older than 90days..." -Status "Ready" -Completed
if ($count -gt 0) {
Write-Both " [!] $count accounts with passwords older than 90days, see accounts_with_old_passwords.txt (KB550)"
Write-Nessus-Finding "AccountsWithOldPasswords" "KB550" ([System.IO.File]::ReadAllText("$outputdir\accounts_with_old_passwords.txt"))
}
$krbtgtPasswordDate = (Get-ADUser -Filter { SamAccountName -eq "krbtgt" } -Properties PasswordLastSet).PasswordLastSet
if ($krbtgtPasswordDate -lt (Get-Date).AddDays(-180)) {
Write-Both " [!] krbtgt password not changed since $krbtgtPasswordDate! (KB253)"
Write-Nessus-Finding "krbtgtPasswordNotChanged" "KB253" "krbtgt password not changed since $krbtgtPasswordDate"
}
}
Function Get-GPOtoFile {
#Outputs complete GPO report
if (Test-Path "$outputdir\GPOReport.html") { Remove-Item "$outputdir\GPOReport.html" -Recurse }
Get-GPOReport -All -ReportType HTML -Path "$outputdir\GPOReport.html"
Write-Both " [+] GPO Report saved to GPOReport.html"
if (Test-Path "$outputdir\GPOReport.xml") { Remove-Item "$outputdir\GPOReport.xml" -Recurse }
Get-GPOReport -All -ReportType XML -Path "$outputdir\GPOReport.xml"
Write-Both " [+] GPO Report saved to GPOReport.xml, now run Grouper offline using the following command (KB499)"
Write-Both " [+] PS>Import-Module Grouper.psm1 ; Invoke-AuditGPOReport -Path C:\GPOReport.xml -Level 3"
}
Function Get-GPOsPerOU {
#Lists all OUs and which GPOs apply to them
$count = 0
$ousgpos = @(Get-ADOrganizationalUnit -Filter *)
$totalcount = ($ousgpos | Measure-Object | Select-Object Count).count
foreach ($ouobject in $ousgpos) {
if ($totalcount -eq 0) { break }
Write-Progress -Activity "Identifying which GPOs apply to which OUs..." -Status "Currently identifed $count OUs" -PercentComplete ($count / $totalcount * 100)
$combinedgpos = ($(((Get-GPInheritance -Target $ouobject).InheritedGpoLinks) | select DisplayName) | ForEach-Object { $_.DisplayName }) -join ','
Add-Content -Path "$outputdir\ous_inheritedGPOs.txt" -Value "$($ouobject.Name) Inherits these GPOs: $combinedgpos"
$count++
}
Write-Progress -Activity "Identifying which GPOs apply to which OUs..." -Status "Ready" -Completed
Write-Both " [+] Inherited GPOs saved to ous_inheritedGPOs.txt"
}
Function Get-NTDSdit {
#Dumps NTDS.dit, SYSTEM and SAM for password cracking
if (Test-Path "$outputdir\ntds.dit") { Remove-Item "$outputdir\ntds.dit" -Recurse }
$outputdirntds = '\"' + $outputdir + '\ntds.dit\"'
$command = "ntdsutil `"ac in ntds`" `"ifm`" `"cr fu $outputdirntds `" q q"
$hide = cmd.exe /c "$command" 2>&1
Write-Both " [+] NTDS.dit, SYSTEM & SAM saved to output folder"
Write-Both " [+] Use secretsdump.py -system registry/SYSTEM -ntds Active\ Directory/ntds.dit LOCAL -outputfile customer"
}
Function Get-SYSVOLXMLS {
#Finds XML files in SYSVOL (thanks --> https://github.com/PowerShellMafia/PowerSploit/blob/master/Exfiltration/Get-GPPPassword.ps1)
$XMLFiles = Get-ChildItem -Path "\\$Env:USERDNSDOMAIN\SYSVOL" -Recurse -ErrorAction SilentlyContinue -Include 'Groups.xml', 'Services.xml', 'Scheduledtasks.xml', 'DataSources.xml', 'Printers.xml', 'Drives.xml'
$count = 0
if ($XMLFiles) {
$progresscount = 0
$totalcount = ($XMLFiles | Measure-Object | Select-Object Count).count
foreach ($File in $XMLFiles) {
if ($totalcount -eq 0) { break }
$progresscount++
Write-Progress -Activity "Searching SYSVOL *.xmls for cpassword..." -Status "Currently searched through $count" -PercentComplete ($progresscount / $totalcount * 100)
$Filename = Split-Path $File -Leaf
$Distinguishedname = (Split-Path (Split-Path (Split-Path( Split-Path (Split-Path $File -Parent) -Parent ) -Parent ) -Parent) -Leaf).Substring(1).TrimEnd('}')
[xml]$Xml = Get-Content ($File)
if ($Xml.innerxml -like "*cpassword*" -and $Xml.innerxml -notlike '*cpassword=""*') {
if (!(Test-Path "$outputdir\sysvol")) { New-Item -ItemType Directory -Path "$outputdir\sysvol" | Out-Null }
Write-Both " [!] cpassword found in file, copying to output folder (KB329)"
Write-Both " $File"
Copy-Item -Path $File -Destination $outputdir\sysvol\$Distinguishedname.$Filename
$count++
}
}
Write-Progress -Activity "Searching SYSVOL *.xmls for cpassword..." -Status "Ready" -Completed
}
if ($count -eq 0) {
Write-Both " ...cpassword not found in the $($XMLFiles.count) XML files found."
}
else {
$GPOxml = (Get-Content "$outputdir\sysvol\*.xml" -ErrorAction SilentlyContinue)
$GPOxml = $GPOxml -Replace "<", "<"
$GPOxml = $GPOxml -Replace ">", ">"
Write-Nessus-Finding "GPOPasswordStorage" "KB329" "$GPOxml"
}
}
Function Get-InactiveAccounts {
#Lists accounts not used in past 180 days plus some checks for admin accounts
$count = 0
$progresscount = 0
$inactiveaccounts = Search-ADaccount -AccountInactive -Timespan (New-TimeSpan -Days 180) -UsersOnly | Where-Object { $_.Enabled -eq $true }
$totalcount = ($inactiveaccounts | Measure-Object | Select-Object Count).count
foreach ($account in $inactiveaccounts) {
if ($totalcount -eq 0) { break }
$progresscount++
Write-Progress -Activity "Searching for inactive users..." -Status "Currently identifed $count" -PercentComplete ($progresscount / $totalcount * 100)
if ($account.Enabled) {
if ($account.LastLogonDate) {
$userlastused = $account.LastLogonDate
}
else {
$userlastused = "Never"
}
Add-Content -Path "$outputdir\accounts_inactive.txt" -Value "User $($account.SamAccountName) ($($account.Name)) has not logged on since $userlastused"
$count++
}
}
Write-Progress -Activity "Searching for inactive users..." -Status "Ready" -Completed
if ($count -gt 0) {
Write-Both " [!] $count inactive user accounts(180days), see accounts_inactive.txt (KB500)"
Write-Nessus-Finding "InactiveAccounts" "KB500" ([System.IO.File]::ReadAllText("$outputdir\accounts_inactive.txt"))
}
}
Function Get-AdminAccountChecks {
#Checks if Administrator account has been renamed, replaced and is no longer used.
$AdministratorSID = ((Get-ADDomain -Current LoggedOnUser).domainsid.value) + "-500"
$AdministratorSAMAccountName = (Get-ADUser -Filter { SID -eq $AdministratorSID } -Properties SamAccountName).SamAccountName
$AdministratorName = (Get-ADUser -Filter { SID -eq $AdministratorSID } -Properties SamAccountName).Name
if ($AdministratorTranslation -contains $AdministratorSAMAccountName) {
Write-Both " [!] Local Administrator account (UID500) has not been renamed (KB309)"
Write-Nessus-Finding "AdminAccountRenamed" "KB309" "Local Administrator account (UID500) has not been renamed"
}
else {
$count = 0
foreach ($AdminName in $AdministratorTranslation) {
if ((Get-ADUser -Filter { SamAccountName -eq $AdminName })) { $count++ }
}
if ($count -eq 0) {
Write-Both " [!] Local Administrator account renamed to $AdministratorSAMAccountName ($($AdministratorName)), but a dummy account not made in it's place! (KB309)"
Write-Nessus-Finding "AdminAccountRenamed" "KB309" "Local Admin account renamed to $AdministratorSAMAccountName ($($AdministratorName)), but a dummy account not made in it's place"
}
}
$AdministratorLastLogonDate = (Get-ADUser -Filter { SID -eq $AdministratorSID } -Properties LastLogonDate).LastLogonDate
if ($AdministratorLastLogonDate -gt (Get-Date).AddDays(-180)) {
Write-Both " [!] UID500 (LocalAdministrator) account is still used, last used $AdministratorLastLogonDate! (KB309)"
Write-Nessus-Finding "AdminAccountRenamed" "KB309" "UID500 (LocalAdmini) account is still used, last used $AdministratorLastLogonDate"
}
}
Function Get-DisabledAccounts {
#Lists disabled accounts
$disabledaccounts = Search-ADaccount -AccountDisabled -UsersOnly
$count = 0
$totalcount = ($disabledaccounts | Measure-Object | Select-Object Count).count
foreach ($account in $disabledaccounts) {
if ($totalcount -eq 0) { break }
Write-Progress -Activity "Searching for disabled users..." -Status "Currently identifed $count" -PercentComplete ($count / $totalcount * 100)
Add-Content -Path "$outputdir\accounts_disabled.txt" -Value "Account $($account.SamAccountName) ($($account.Name)) is disabled"
$count++
}
Write-Progress -Activity "Searching for disabled users..." -Status "Ready" -Completed
if ($count -gt 0) {
Write-Both " [!] $count disabled user accounts, see accounts_disabled.txt (KB501)"
Write-Nessus-Finding "DisabledAccounts" "KB501" ([System.IO.File]::ReadAllText("$outputdir\accounts_disabled.txt"))
}
}
Function Get-LockedAccounts {
#Lists locked accounts
$lockedAccounts = Get-ADUser -Filter * -Properties LockedOut | Where-Object { $_.LockedOut -eq $true }
$count = 0
$totalcount = ($lockedAccounts | Measure-Object | Select-Object Count).Count
foreach ($account in $lockedAccounts) {
if ($totalcount -eq 0) { break }
Write-Progress -Activity "Searching for locked users..." -Status "Currently identifed $count" -PercentComplete ($count / $totalcount * 100)
Add-Content -Path "$outputdir\accounts_locked.txt" -Value "Account $($account.SamAccountName) ($($account.Name)) is locked"
$count++
}
Write-Progress -Activity "Searching for locked users..." -Status "Ready" -Completed
if ($count -gt 0) {
Write-Both " [!] $count locked user accounts, see accounts_locked.txt"
}
}
Function Get-AccountPassDontExpire {
#Lists accounts who's passwords dont expire
$count = 0
$nonexpiringpasswords = Search-ADAccount -PasswordNeverExpires -UsersOnly | Where-Object { $_.Enabled -eq $true }
$totalcount = ($nonexpiringpasswords | Measure-Object | Select-Object Count).count
foreach ($account in $nonexpiringpasswords) {
if ($totalcount -eq 0) { break }
Write-Progress -Activity "Searching for users with passwords that dont expire..." -Status "Currently identifed $count" -PercentComplete ($count / $totalcount * 100)
Add-Content -Path "$outputdir\accounts_passdontexpire.txt" -Value "$($account.SamAccountName) ($($account.Name))"
$count++
}
Write-Progress -Activity "Searching for users with passwords that dont expire..." -Status "Ready" -Completed
if ($count -gt 0) {
Write-Both " [!] There are $count accounts that don't expire, see accounts_passdontexpire.txt (KB254)"
Write-Nessus-Finding "AccountsThatDontExpire" "KB254" ([System.IO.File]::ReadAllText("$outputdir\accounts_passdontexpire.txt"))
}
}
Function Get-OldBoxes {
#Lists 2000/2003/XP/Vista/7/2008 machines
$count = 0
$oldboxes = Get-ADComputer -Filter { OperatingSystem -Like "*2003*" -and Enabled -eq "true" -or OperatingSystem -Like "*XP*" -and Enabled -eq "true" -or OperatingSystem -Like "*2000*" -and Enabled -eq "true" -or OperatingSystem -like '*Windows 7*' -and Enabled -eq "true" -or OperatingSystem -like '*vista*' -and Enabled -eq "true" -or OperatingSystem -like '*2008*' -and Enabled -eq "true" } -Property OperatingSystem
$totalcount = ($oldboxes | Measure-Object | Select-Object Count).count
foreach ($machine in $oldboxes) {
if ($totalcount -eq 0) { break }
Write-Progress -Activity "Searching for 2000/2003/XP/Vista/7/2008 devices joined to the domain..." -Status "Currently identifed $count" -PercentComplete ($count / $totalcount * 100)
Add-Content -Path "$outputdir\machines_old.txt" -Value "$($machine.Name), $($machine.OperatingSystem), $($machine.OperatingSystemServicePack), $($machine.OperatingSystemVersio), $($machine.IPv4Address)"
$count++
}
Write-Progress -Activity "Searching for 2000/2003/XP/Vista/7/2008 devices joined to the domain..." -Status "Ready" -Completed
if ($count -gt 0) {
Write-Both " [!] We found $count machines running 2000/2003/XP/Vista/7/2008! see machines_old.txt (KB3/37/38/KB259)"
Write-Nessus-Finding "OldBoxes" "KB259" ([System.IO.File]::ReadAllText("$outputdir\machines_old.txt"))
}
}
Function Get-DCsNotOwnedByDA {
#Searches for DC objects not owned by the Domain Admins group
$count = 0
$progresscount = 0
$domaincontrollers = Get-ADComputer -Filter { PrimaryGroupID -eq 516 -or PrimaryGroupID -eq 521 } -Property *
$totalcount = ($domaincontrollers | Measure-Object | Select-Object Count).count
if ($totalcount -gt 0) {
foreach ($machine in $domaincontrollers) {
$progresscount++
Write-Progress -Activity "Searching for DCs not owned by Domain Admins group..." -Status "Currently identifed $count" -PercentComplete ($progresscount / $totalcount * 100)
if ($machine.ntsecuritydescriptor.Owner -ne "$env:UserDomain\$DomainAdmins") {
Add-Content -Path "$outputdir\dcs_not_owned_by_da.txt" -Value "$($machine.Name), $($machine.OperatingSystem), $($machine.OperatingSystemServicePack), $($machine.OperatingSystemVersio), $($machine.IPv4Address), owned by $($machine.ntsecuritydescriptor.Owner)"
$count++
}
}
Write-Progress -Activity "Searching for DCs not owned by Domain Admins group..." -Status "Ready" -Completed
}
if ($count -gt 0) {
Write-Both " [!] We found $count DCs not owned by Domains Admins group! see dcs_not_owned_by_da.txt"
Write-Nessus-Finding "DCsNotByDA" "KB547" ([System.IO.File]::ReadAllText("$outputdir\dcs_not_owned_by_da.txt"))
}
}
Function Get-HostDetails {
#Gets basic information about the host
Write-Both " [+] Device Name: $env:ComputerName"
Write-Both " [+] Domain Name: $env:UserDomain"
Write-Both " [+] User Name : $env:UserName"
Write-Both " [+] NT Version : $(Get-WinVersion)"
$IPAddresses = [net.dns]::GetHostAddresses("") | select -ExpandProperty IP*
foreach ($ip in $IPAddresses) {
if ($ip -ne "::1") {
Write-Both " [+] IP Address : $ip"
}
}
}
Function Get-FunctionalLevel {
#Gets the functional level for domain and forest
$DomainLevel = (Get-ADDomain).domainMode
if ($DomainLevel -eq "Windows2000Domain" -and [single](Get-WinVersion) -gt 5.0) { Write-Both " [!] DomainLevel is reduced for backwards compatibility to $DomainLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "DomainLevel is reduced for backwards compatibility to $DomainLevel" }
if ($DomainLevel -eq "Windows2003InterimDomain" -and [single](Get-WinVersion) -gt 5.1) { Write-Both " [!] DomainLevel is reduced for backwards compatibility to $DomainLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "DomainLevel is reduced for backwards compatibility to $DomainLevel" }
if ($DomainLevel -eq "Windows2003Domain" -and [single](Get-WinVersion) -gt 5.2) { Write-Both " [!] DomainLevel is reduced for backwards compatibility to $DomainLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "DomainLevel is reduced for backwards compatibility to $DomainLevel" }
if ($DomainLevel -eq "Windows2008Domain" -and [single](Get-WinVersion) -gt 6.0) { Write-Both " [!] DomainLevel is reduced for backwards compatibility to $DomainLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "DomainLevel is reduced for backwards compatibility to $DomainLevel" }
if ($DomainLevel -eq "Windows2008R2Domain" -and [single](Get-WinVersion) -gt 6.1) { Write-Both " [!] DomainLevel is reduced for backwards compatibility to $DomainLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "DomainLevel is reduced for backwards compatibility to $DomainLevel" }
if ($DomainLevel -eq "Windows2012Domain" -and [single](Get-WinVersion) -gt 6.2) { Write-Both " [!] DomainLevel is reduced for backwards compatibility to $DomainLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "DomainLevel is reduced for backwards compatibility to $DomainLevel" }
if ($DomainLevel -eq "Windows2012R2Domain" -and [single](Get-WinVersion) -gt 6.3) { Write-Both " [!] DomainLevel is reduced for backwards compatibility to $DomainLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "DomainLevel is reduced for backwards compatibility to $DomainLevel" }
if ($DomainLevel -eq "Windows2016Domain" -and [single](Get-WinVersion) -gt 10.0) { Write-Both " [!] DomainLevel is reduced for backwards compatibility to $DomainLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "DomainLevel is reduced for backwards compatibility to $DomainLevel" }
$ForestLevel = (Get-ADForest).ForestMode
if ($ForestLevel -eq "Windows2000Forest" -and [single](Get-WinVersion) -gt 5.0) { Write-Both " [!] ForestLevel is reduced for backwards compatibility to $ForestLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "ForestLevel is reduced for backwards compatibility to $ForestLevel" }
if ($ForestLevel -eq "Windows2003InterimForest" -and [single](Get-WinVersion) -gt 5.1) { Write-Both " [!] ForestLevel is reduced for backwards compatibility to $ForestLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "ForestLevel is reduced for backwards compatibility to $ForestLevel" }
if ($ForestLevel -eq "Windows2003Forest" -and [single](Get-WinVersion) -gt 5.2) { Write-Both " [!] ForestLevel is reduced for backwards compatibility to $ForestLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "ForestLevel is reduced for backwards compatibility to $ForestLevel" }
if ($ForestLevel -eq "Windows2008Forest" -and [single](Get-WinVersion) -gt 6.0) { Write-Both " [!] ForestLevel is reduced for backwards compatibility to $ForestLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "ForestLevel is reduced for backwards compatibility to $ForestLevel" }
if ($ForestLevel -eq "Windows2008R2Forest" -and [single](Get-WinVersion) -gt 6.1) { Write-Both " [!] ForestLevel is reduced for backwards compatibility to $ForestLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "ForestLevel is reduced for backwards compatibility to $ForestLevel" }
if ($ForestLevel -eq "Windows2012Forest" -and [single](Get-WinVersion) -gt 6.2) { Write-Both " [!] ForestLevel is reduced for backwards compatibility to $ForestLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "ForestLevel is reduced for backwards compatibility to $ForestLevel" }
if ($ForestLevel -eq "Windows2012R2Forest" -and [single](Get-WinVersion) -gt 6.3) { Write-Both " [!] ForestLevel is reduced for backwards compatibility to $ForestLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "ForestLevel is reduced for backwards compatibility to $ForestLevel" }
if ($ForestLevel -eq "Windows2016Forest" -and [single](Get-WinVersion) -gt 10.0) { Write-Both " [!] ForestLevel is reduced for backwards compatibility to $ForestLevel!" ; Write-Nessus-Finding "FunctionalLevel" "KB546" "ForestLevel is reduced for backwards compatibility to $ForestLevel" }
}
Function Get-GPOEnum {
#Loops GPOs for some important domain-wide settings
$AllowedJoin = @()
$HardenNTLM = @()
$DenyNTLM = @()
$AuditNTLM = @()
$NTLMAuthExceptions = @()
$EncryptionTypesNotConfigured = $true
$AdminLocalLogonAllowed = $true
$AdminRPDLogonAllowed = $true
$AdminNetworkLogonAllowed = $true
$AllGPOs = Get-GPO -All | sort DisplayName
foreach ($GPO in $AllGPOs) {
$GPOreport = Get-GPOReport -Guid $GPO.Id -ReportType Xml
#Look for GPO that allows join PC to domain
$permissionindex = $GPOreport.IndexOf('<q1:Name>SeMachineAccountPrivilege</q1:Name>')
if ($permissionindex -gt 0) {
$xmlreport = [xml]$GPOreport
foreach ($member in (($xmlreport.GPO.Computer.ExtensionData.Extension.UserRightsAssignment | Where-Object { $_.Name -eq 'SeMachineAccountPrivilege' }).Member) ) {
$obj = New-Object -TypeName PSObject
$obj | Add-Member -MemberType NoteProperty -Name GPO -Value $GPO.DisplayName
$obj | Add-Member -MemberType NoteProperty -Name SID -Value $member.Sid.'#text'
$obj | Add-Member -MemberType NoteProperty -Name Name -Value $member.Name.'#text'
$AllowedJoin += $obj
}
}
#Look for GPO that hardens NTLM
$permissionindex = $GPOreport.IndexOf('NoLMHash</q1:KeyName>')
if ($permissionindex -gt 0) {
$xmlreport = [xml]$GPOreport
$value = $xmlreport.GPO.Computer.ExtensionData.Extension.SecurityOptions | Where-Object { $_.KeyName -Match 'NoLMHash' }
$obj = New-Object -TypeName PSObject
$obj | Add-Member -MemberType NoteProperty -Name GPO -Value $GPO.DisplayName
$obj | Add-Member -MemberType NoteProperty -Name Value -Value "NoLMHash $($value.Display.DisplayBoolean)"
$HardenNTLM += $obj
}
$permissionindex = $GPOreport.IndexOf('LmCompatibilityLevel</q1:KeyName>')
if ($permissionindex -gt 0) {
$xmlreport = [xml]$GPOreport
$value = $xmlreport.GPO.Computer.ExtensionData.Extension.SecurityOptions | Where-Object { $_.KeyName -Match 'LmCompatibilityLevel' }
$obj = New-Object -TypeName PSObject
$obj | Add-Member -MemberType NoteProperty -Name GPO -Value $GPO.DisplayName
$obj | Add-Member -MemberType NoteProperty -Name Value -Value "LmCompatibilityLevel $($value.Display.DisplayString)"
$HardenNTLM += $obj
}
#Look for GPO that denies NTLM
$permissionindex = $GPOreport.IndexOf('RestrictNTLMInDomain</q1:KeyName>')
if ($permissionindex -gt 0) {
$xmlreport = [xml]$GPOreport
$value = $xmlreport.GPO.Computer.ExtensionData.Extension.SecurityOptions | Where-Object { $_.KeyName -Match 'RestrictNTLMInDomain' }
$obj = New-Object -TypeName PSObject
$obj | Add-Member -MemberType NoteProperty -Name GPO -Value $GPO.DisplayName
$obj | Add-Member -MemberType NoteProperty -Name Value -Value "RestrictNTLMInDomain $($value.Display.DisplayString)"
$DenyNTLM += $obj
}
#Look for GPO that audits NTLM
$permissionindex = $GPOreport.IndexOf('AuditNTLMInDomain</q1:KeyName>')
if ($permissionindex -gt 0) {
$xmlreport = [xml]$GPOreport
$value = $xmlreport.GPO.Computer.ExtensionData.Extension.SecurityOptions | Where-Object { $_.KeyName -Match 'AuditNTLMInDomain' }
$obj = New-Object -TypeName PSObject
$obj | Add-Member -MemberType NoteProperty -Name GPO -Value $GPO.DisplayName
$obj | Add-Member -MemberType NoteProperty -Name Value -Value "AuditNTLMInDomain $($value.Display.DisplayString)"
$AuditNTLM += $obj
}
$permissionindex = $GPOreport.IndexOf('AuditReceivingNTLMTraffic</q1:KeyName>')
if ($permissionindex -gt 0) {
$xmlreport = [xml]$GPOreport
$value = $xmlreport.GPO.Computer.ExtensionData.Extension.SecurityOptions | Where-Object { $_.KeyName -Match 'AuditReceivingNTLMTraffic' }
$obj = New-Object -TypeName PSObject
$obj | Add-Member -MemberType NoteProperty -Name GPO -Value $GPO.DisplayName
$obj | Add-Member -MemberType NoteProperty -Name Value -Value "AuditReceivingNTLMTraffic $($value.Display.DisplayString)"
$AuditNTLM += $obj
}
#Look for GPO that allows NTLM exclusions
$permissionindex = $GPOreport.IndexOf('DCAllowedNTLMServers</q1:KeyName>')
if ($permissionindex -gt 0) {
$xmlreport = [xml]$GPOreport
foreach ($member in (($xmlreport.GPO.Computer.ExtensionData.Extension.SecurityOptions | Where-Object { $_.KeyName -Match 'DCAllowedNTLMServers' }).SettingStrings.Value) ) {
$NTLMAuthExceptions += $member
}
}
#Validate Kerberos Encryption algorythm
$permissionindex = $GPOreport.IndexOf('MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\Kerberos\Parameters\SupportedEncryptionTypes')
if ($permissionindex -gt 0) {
$EncryptionTypesNotConfigured = $false
$xmlreport = [xml]$GPOreport
$EncryptionTypes = $xmlreport.GPO.Computer.ExtensionData.Extension.SecurityOptions.Display.DisplayFields.Field
if (($EncryptionTypes | Where-Object { $_.Name -eq 'DES_CBC_CRC' } | select -ExpandProperty value) -eq 'true') { Write-Both " [!] GPO [$($GPO.DisplayName)] enabled DES_CBC_CRC for Kerberos!" }
elseif (($EncryptionTypes | Where-Object { $_.Name -eq 'DES_CBC_MD5' } | select -ExpandProperty value) -eq 'true') { Write-Both " [!] GPO [$($GPO.DisplayName)] enabled DES_CBC_MD5 for Kerberos!" }
elseif (($EncryptionTypes | Where-Object { $_.Name -eq 'RC4_HMAC_MD5' } | select -ExpandProperty value) -eq 'true') { Write-Both " [!] GPO [$($GPO.DisplayName)] enabled RC4_HMAC_MD5 for Kerberos!" }
elseif (($EncryptionTypes | Where-Object { $_.Name -eq 'AES128_HMAC_SHA1' } | select -ExpandProperty value) -eq 'false') { Write-Both " [!] AES128_HMAC_SHA1 not enabled for Kerberos!" }
elseif (($EncryptionTypes | Where-Object { $_.Name -eq 'AES256_HMAC_SHA1' } | select -ExpandProperty value) -eq 'false') { Write-Both " [!] AES256_HMAC_SHA1 not enabled for Kerberos!" }
elseif (($EncryptionTypes | Where-Object { $_.Name -eq 'Future encryption types' } | select -ExpandProperty value) -eq 'false') { Write-Both " [!] Future encryption types not enabled for Kerberos!" }
}
#Validates Admins local logon restrictions
$permissionindex = $GPOreport.IndexOf('SeDenyInteractiveLogonRight')
if ($permissionindex -gt 0) {
$xmlreport = [xml]$GPOreport
foreach ($member in (($xmlreport.GPO.Computer.ExtensionData.Extension.UserRightsAssignment | Where-Object { $_.Name -eq 'SeDenyInteractiveLogonRight' }).Member)) {
if ($member.Name.'#text' -match "$SchemaAdmins" -or $member.Name.'#text' -match "$DomainAdmins" -or $member.Name.'#text' -match "$EnterpriseAdmins") {
$AdminLocalLogonAllowed = $false
Add-Content -Path "$outputdir\admin_logon_restrictions.txt" -Value "$($GPO.DisplayName) SeDenyInteractiveLogonRight $($member.Name.'#text')"
}
}
}
#Validates Admins RDP logon restrictions
$permissionindex = $GPOreport.IndexOf('SeDenyRemoteInteractiveLogonRight')
if ($permissionindex -gt 0) {
$xmlreport = [xml]$GPOreport
foreach ($member in (($xmlreport.GPO.Computer.ExtensionData.Extension.UserRightsAssignment | Where-Object { $_.Name -eq 'SeDenyRemoteInteractiveLogonRight' }).Member)) {
if ($member.Name.'#text' -match "$SchemaAdmins" -or $member.Name.'#text' -match "$DomainAdmins" -or $member.Name.'#text' -match "$EnterpriseAdmins") {
$AdminRPDLogonAllowed = $false
Add-Content -Path "$outputdir\admin_logon_restrictions.txt" -Value "$($GPO.DisplayName) SeDenyRemoteInteractiveLogonRight $($member.Name.'#text')"
}
}
}
#Validates Admins network logon restrictions
$permissionindex = $GPOreport.IndexOf('SeDenyNetworkLogonRight')
if ($permissionindex -gt 0) {
$xmlreport = [xml]$GPOreport
foreach ($member in (($xmlreport.GPO.Computer.ExtensionData.Extension.UserRightsAssignment | Where-Object { $_.Name -eq 'SeDenyNetworkLogonRight' }).Member)) {
if ($member.Name.'#text' -match "$SchemaAdmins" -or $member.Name.'#text' -match "$DomainAdmins" -or $member.Name.'#text' -match "$EnterpriseAdmins") {
$AdminNetworkLogonAllowed = $false
Add-Content -Path "$outputdir\admin_logon_restrictions.txt" -Value "$($GPO.DisplayName) SeDenyNetworkLogonRight $($member.Name.'#text')"
}
}
}
}
#Output for join PC to domain
foreach ($record in $AllowedJoin) {
Write-Both " [+] GPO [$($record.GPO)] allows [$($record.Name)] to join computers to domain"
}
#Output for Admins local logon restrictions
if ($AdminLocalLogonAllowed) {
Write-Both " [!] No GPO restricts Domain, Schema and Enterprise local logon across domain!!!"
Write-Nessus-Finding "AdminLogon" "KB479" "No GPO restricts Domain, Schema and Enterprise local logon across domain!"
}
#Output for Admins RDP logon restrictions
if ($AdminRPDLogonAllowed) {
Write-Both " [!] No GPO restricts Domain, Schema and Enterprise RDP logon across domain!!!"
Write-Nessus-Finding "AdminLogon" "KB479" "No GPO restricts Domain, Schema and Enterprise RDP logon across domain!"
}
#Output for Admins network logon restrictions
if ($AdminNetworkLogonAllowed) {
Write-Both " [!] No GPO restricts Domain, Schema and Enterprise network logon across domain!!!"
Write-Nessus-Finding "AdminLogon" "KB479" "No GPO restricts Domain, Schema and Enterprise network logon across domain!"
}
#Output for Validate Kerberos Encryption algorythm
if ($EncryptionTypesNotConfigured) {
Write-Both " [!] RC4_HMAC_MD5 enabled for Kerberos across domain!!!"
Write-Nessus-Finding "WeakKerberosEncryption" "KB995" "RC4_HMAC_MD5 enabled for Kerberos across domain!"
}
#Output for deny NTLM
if ($DenyNTLM.count -eq 0) {
if ($HardenNTLM.count -eq 0) {
Write-Both " [!] No GPO denies NTLM authentication!"
Write-Both " [!] No GPO explicitely restricts LM or NTLMv1!"
}
else {
Write-Both " [+] NTLM authentication hardening implemented, but NTLM not denied"
foreach ($record in $HardenNTLM) {
Write-Both " [-] $($record.value)"
Add-Content -Path "$outputdir\ntlm_restrictions.txt" -Value "NTLM restricted by GPO [$($record.gpo)] with value [$($record.value)]"
}
}
}
else {
foreach ($record in $DenyNTLM) {
Add-Content -Path "$outputdir\ntlm_restrictions.txt" -Value "NTLM restricted by GPO [$($record.gpo)] with value [$($record.value)]"
}
}
#Output for NTLM exceptions
if ($NTLMAuthExceptions.count -ne 0) {
foreach ($record in $NTLMAuthExceptions) {
Add-Content -Path "$outputdir\ntlm_restrictions.txt" -Value "NTLM auth exceptions $($record)"
}
}
#Output for NTLM audit
if ($AuditNTLM.count -eq 0) {
Write-Both " [!] No GPO enables NTLM audit authentication!"
}
else {
foreach ($record in $DenyNTLM) {
Add-Content -Path "$outputdir\ntlm_restrictions.txt" -Value "NTLM audit GPO [$($record.gpo)] with value [$($record.value)]"
}
}
}
Function Get-PrivilegedGroupMembership {
#List Domain Admins, Enterprise Admins and Schema Admins members
$SchemaMembers = Get-ADGroup $SchemaAdmins | Get-ADGroupMember
$EnterpriseMembers = Get-ADGroup $EnterpriseAdmins | Get-ADGroupMember
$DomainAdminsMembers = Get-ADGroup $DomainAdmins | Get-ADGroupMember
if (($SchemaMembers | measure).count -ne 0) {
Write-Both " [!] Schema Admins not empty!!!"
foreach ($member in $SchemaMembers) {
Add-Content -Path "$outputdir\schema_admins.txt" -Value "$($member.objectClass) $($member.SamAccountName) $($member.Name)"
}
}
if (($EnterpriseMembers | measure).count -ne 0) {
Write-Both " [!] Enterprise Admins not empty!!!"
foreach ($member in $EnterpriseMembers) {
Add-Content -Path "$outputdir\enterprise_admins.txt" -Value "$($member.objectClass) $($member.SamAccountName) $($member.Name)"
}
}
foreach ($member in $DomainAdminsMembers) {
Add-Content -Path "$outputdir\domain_admins.txt" -Value "$($member.objectClass) $($member.SamAccountName) $($member.Name)"
}
}