Cross-domain enumeration
Domain trusts explained
Active Directory Domain Services (AD DS) provides security across multiple domains or forests through domain and forest trust relationships. Before authentication can occur across trusts, Windows must first check if the domain being requested by a user, computer, or service has a trust relationship with the domain of the requesting account.
Enumerating domain trust
Need PowerView.ps1 for this:
Enumerate from one to another domain
If you have a valid account for the child/parent domain and there is a trust between the domains, you can enumerate the other domain using the authentication of the compromised domain.
A great tool can me powershell empire, but you will need to do all enumeration from the compromised DC and run powershell empire. This can trigger AV. A better way is to use BloodyAD. BloodyAD is a remote tool that uses LDAP to enumerate the domain.
Get all domain users
Get all writable objects
More Bloody-AD examples:
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