Enumeration

Enumerating Active Directory

Current Domain info

info like Forest, DomainControllers

[System.DirectoryServices.ActiveDirectory.Domain]::GetComputerDomain()

Enumeration Tools

Powerview - https://github.com/PowerShellMafia/PowerSploit/blob/master/Recon/PowerView.ps1

Microsoft AD Module - https://github.com/samratashok/ADModule https://docs.microsoft.com/en-us/powershell/module/addsadministration/?view=win10-ps import Microsoft.ActiveDirectory.Management.dll and ActiveDirectory.psd1

Here Upper command is PowerView Lower Command is AD Module

Domain

Get current domain

Get-NetDomain

Get-ADDomain

Get Object of another domain(if trusts)

Get-NetDomain –Domain moneycorp.local

Get-ADDomain -Identity moneycorp.local

Get domain SID for the current domain

Get-DomainSID

(Get-ADDomain).DomainSID

Policy

Get domain policy for the current domain 

Get-DomainPolicy
(Get-DomainPolicy)."System Access"
(Get-DomainPolicy)."Kerberos Policy"

Get domain policy for another domain

(Get-DomainPolicy –domain eurocorp.local)."system access"

Get domain controllers for the current domain and it's IP

Get-NetDomainController

Get-ADDomainController

Get domain controllers for another domain

Get-NetDomainController -Domain eurocorp.local

Get-ADDomainController -DomainName eurocorp.local -Discover

Users

Get a list of users in the current domain

Get-NetUser
Get-NetUser –Username student1

Get-ADUser -Filter * -Properties *
Get-ADUser -Identity student1 -Properties *

net user /domain
net user student82 /domain

Get List of all properties for users in the current domain

pwdlastset, badpwdcounts property helps in understanding if the account id honeypot or decoy account users have bad passwords and pwdlastset is very old for decoy accounts

Get-UserProperty
Get-UserProperty –Properties pwdlastset

Get-ADUser -Filter * -Properties * | select -First 1 | Get-Member -MemberType *Property | select Name
Get-ADUser -Filter * -Properties * | select name,@{expression={[datetime]::fromFileTime($_.pwdlastset)}}

Search for a particular string in a user's attributes:

Find-UserField -SearchField Description -SearchTerm "built"
Get-ADUser -Filter 'Description -like "*built*"' -Properties Description | select name,Description

Computers

Get a list of computers in the current domain

These could be actual computes or VMs Ping ICMP Request is used to detect if host is online . If ICMP packets are didabled in firewall it could give false positives that machine is offline

Get-NetComputer
Get-NetComputer –OperatingSystem "*Server 2016*"
Get-NetComputer -Ping
Get-NetComputer -FullData
Get-NetComputer -FullData | select operatingsystem

Get-ADComputer -Filter * | select Name
Get-ADComputer -Filter 'OperatingSystem -like "*Server 2016*"' -Properties OperatingSystem | select Name,OperatingSystem
Get-ADComputer -Filter * -Properties DNSHostName | %{Test-Connection -Count 1 -ComputerName $_.DNSHostName}
Get-ADComputer -Filter * -Properties *

Groups

Get all the groups in the current domain

Get-NetGroup
Get-NetGroup –Domain <targetdomain>
Get-NetGroup –FullData


Get-ADGroup -Filter * | select Name
Get-ADGroup -Filter * -Properties *

net group  /domain
net group "RDPUsers" /domain

Get all groups containing the word "admin" in group name

Get-NetGroup -GroupName *admin*
Get-NetGroup -GroupName *admin* -Domain eurocorp.local

Get-ADGroup -Filter 'Name -like "*admin*"' | select Name

Get all the members of the Domain Admins group

RID 500 denotes administrator

Get-NetGroupMember -GroupName "Domain Admins" -Recurse
Get-NetGroupMember -GroupName "Domain Admins" -Domain eurocorp.local

Get-ADGroupMember -Identity "Domain Admins" -Recursive

Get the group membership for a user:

RID 513 denotes a built-in group

Get-NetGroup –UserName "student1"

Get-ADPrincipalGroupMembership -Identity student1

List all the local groups on a machine (needs administrator privs on nondc machines)

Get-NetLocalGroup -ComputerName dcorp-dc.dollarcorp.moneycorp.local -ListGroups

show membership of administrator groups
Get-NetLocalGroup -ComputerName dcorp-dc.dollarcorp.moneycorp.local

Get members of all the local groups on a machine (needs administrator privs on non-dc machines) 

Get-NetLocalGroup -ComputerName dcorp-dc.dollarcorp.moneycorp.local -Recurse

Get actively logged users on a computer (needs local admin rights on the target)

Get-NetLoggedon -ComputerName dcorp-dc.dollarcorp.moneycorp.local -Verbose

Get locally logged users on a computer (needs remote registry on the target - started by-default on server OS)

Get-LoggedonLocal -ComputerName dcorp-dc.dollarcorp.moneycorp.local

Get the last logged user on a computer (needs administrative rights and remote registry on the target)

Get-LastLoggedOn –ComputerName <servername>

Shares

Find shares on hosts in current domain.

Invoke-ShareFinder –Verbose

Find sensitive files on computers in the domain 

Invoke-FileFinder –Verbose

Get all fileservers of the domain

enumerates high-value targets

Get-NetFileServer

GPO

Get list of GPO in current domain

Get-WindowsOptionalFeature -Online -FeatureName Enable-WindowsOptionalFeature -Online -FeatureName RSAT Install-WindowsFeature -Name GPMC Import-Module grouppolicy

Get-NetGPO
Get-NetGPO -ComputerName dcorpstudent1.dollarcorp.moneycorp.local

Get-GPO -All (GroupPolicy module)
Get-GPResultantSetOfPolicy -ReportType Html -Path
C:\Users\Administrator\report.html (Provides RSoP)

Get GPO(s) which use Restricted Groups or groups.xml for interesting users

List the restricted groups, if get access to one of the groups we can access all others as it might be pushed to all the machines

Get-NetGPOGroup

Get users which are in a local group of a machine using GPO

Find-GPOComputerAdmin –Computername dcorpstudent1.dollarcorp.moneycorp.local

Get machines where the given user is member of a specific group

Find-GPOLocation -UserName student1 -Verbose

Get OUs in a domain

Get-NetOU 
Get-NetOU -FullData

Get-ADOrganizationalUnit -Filter * -Properties *

Get GPO applied on an OU. Read GPOname from gplink attribute from Get-NetOU

gplink in get-netou is entered in -gponame

Get-NetGPO -GPOname "{AB306569-220D-43FF-B03B83E8F4EF8081}" 

Get-GPO -Guid AB306569-220D-43FF-B03B-83E8F4EF8081
(GroupPolicy module)

Get the ACLs associated with the specified object

Get-ObjectAcl -SamAccountName student82 -ResolveGUIDs

Get the ACLs associated with the specified prefix to be used for search

Get-ObjectAcl -ADSprefix 'CN=student82,CN=Users' -Verbose

We can also enumerate ACLs using ActiveDirectory module but without resolving GUIDs

Get the ACLs associated with the specified LDAP path to be used for search

Get-ObjectAcl -ADSpath "LDAP://CN=Domain Admins,CN=Users,DC=dollarcorp,DC=moneycorp,DC=local" -ResolveGUIDs -Verbose

Search for interesting ACEs

Invoke-ACLScanner -ResolveGUIDs

Get the ACLs associated with the specified path

Get-PathAcl -Path "\\dcorp-dc.dollarcorp.moneycorp.local\sysvol"

Trusts

Get a list of all domain trusts for the current domain

Get-NetDomainTrust
Get-NetDomainTrust -Domain eurocorp.local

Get-ADTrust
Get-ADTrust -Identity eurocorp.local

Get details about the current forest

Get-NetForest
Get-NetForest –Forest eurocorp.local

Get-ADForest
Get-ADForest –Identity eurocorp.local

Get all domains in the current forest

Get-NetForestDomain
Get-NetForestDomain –Forest eurocorp.local

(Get-ADForest).Domains

Get all global catalogs for the current forest

Get-NetForestCatalog
Get-NetForestCatalog –Forest eurocorp.local

Get-ADForest | select -ExpandProperty GlobalCatalogs

Map trusts of a forest

maps trust between forests, not domains or child entities.so no output

Get-NetForestTrust
Get-NetForestTrust –Forest eurocorp.local

Get-ADTrust -Filter 'msDS-TrustForestTrustInfo -ne "$null"'

Enumerating computers from the trustee domain

Map domain trust

Sessions

Find all machines on the current domain where the current user has local admin access

This function queries the DC of the current or provided domain for a list of computers (Get-NetComputer) and then use multi-threaded Invoke-CheckLocalAdminAccess on each machine.

 Find-LocalAdminAccess -Verbose

This can also be done with the help of remote administration tools like WMI and PowerShell remoting. Pretty useful in cases ports (RPC and SMB) used by Find-LocalAdminAccess are blocked.

Find local admins on all machines of the domain (needs administrator privs on non-dc machines).

This function queries the DC of the current or provided domain for a list of computers (Get-NetComputer) and then use multi-threaded GetNetLocalGroup on each machine.

Invoke-EnumerateLocalAdmin –Verbose

Find computers where a domain admin (or specified user/group) has sessions

This function queries the DC of the current or provided domain for members of the given group (Domain Admins by default) using Get-NetGroupMember, gets a list of computers (Get-NetComputer) and list sessions and logged on users (GetNetSession/Get-NetLoggedon) from each machine.

Invoke-UserHunter
Invoke-UserHunter -GroupName "RDPUsers"

to check admin access
Invoke-UserHunter -CheckAccess

Find computers where a domain admin is logged-in.

performs only on high valued targets

This option queries the DC of the current or provided domain for members of the given group (Domain Admins by default) using Get-NetGroupMember, gets a list only of high traffic servers (DC, File Servers and Distributed File servers) for less traffic generation and list sessions and logged on users (Get-NetSession/Get-NetLoggedon) from each machine.

Invoke-UserHunter -Stealth

Get actively logged users on a computer (needs local admin rights on the target)

Get-NetLoggedon -ComputerName dcorp-dc.dollarcorp.moneycorp.local -Verbose

Get locally logged users on a computer (needs remote registry on the target - started by-default on server OS)

Get-LoggedonLocal -ComputerName dcorp-dc.dollarcorp.moneycorp.local

Get the last logged user on a computer (needs administrative rights and remote registry on the target)

Get-LastLoggedOn –ComputerName <servername>

Defense

Netcease is a script which changes permissions on the NetSessionEnum method by removing permission for Authenticated Users group.

This fails many of the attacker's session enumeration and hence user hunting capabilities. .\NetCease.ps1 .\NetCease.ps1 -revert

Another interesting script from the same author is SAMRi10 which hardens Windows 10 and Server 2016 against enumeration which uses SAMR protocol (like net.exe) • https://gallery.technet.microsoft.com/SAMRi10-Hardening-Remote48d94b5b

find for sensitive texts like pass, password,etc in all files

search files in recycle bin also from shares

findstr.exe /spin "password" *.*

There are various ways of locally escalating privileges on Windows box: – Missing patches – Automated deployment and AutoLogon passwords in clear text – AlwaysInstallElevated (Any user can run MSI as SYSTEM) – Misconfigured Services – DLL Hijacking and more • We can use below tools for complete coverage – PowerUp: https://github.com/PowerShellMafia/PowerSploit/tree/master/Privesc – BeRoot: https://github.com/AlessandroZ/BeRoot .\beRoot.exe – Privesc: https://github.com/enjoiz/Privesc Invoke-PrivEsc – WinPEAS: https://github.com/carlospolop/privilege-escalation-awesome-scripts-suite/tree/master/winPEAS

Services Issues using PowerUp • Get services with unquoted paths and a space in their name. Invoke-AllChecks Get-ServiceUnquoted -Verbose • Get services where the current user can write to its binary path or change arguments to the binary Get-ModifiableServiceFile -Verbose • Get the services whose configuration current user can modify. Get-ModifiableService -Verbose

Feature Abuse

You can miss-use Enterprise applications like Jenkins which mostly have admin privileges and find a way to run commands

Without logging in we can list users

Bloodhound

Bloodhound represents AD entities and relationships in the form of GUI

bloodhound requires ne04j use suitable version v3 and v2 are incompatible to each other

upload zip files in bloodhound start mapping you can use built-in queries you can mark users as owned you can find paths,etc

Invoke-BloodHound -CollectionMethod All -Verbose
Invoke-BloodHound -CollectionMethod LoggedOn -Verbose

Invoke-BloodHound -CollectionMethod All -ExcludeDC    //less noisy

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