WriteOwner

The WriteOwner permission allows a user to change the ownership of an object to a different user or principal, including one controlled by an attacker. By exploiting this permission, an attacker can take ownership of a target object.

Once the attacker successfully changes the ownership of the object to a principal under their control, they gain the ability to fully manipulate the object. This includes modifying permissions to grant themselves or others full control over the object. For example, the attacker could grant “Full Control” permissions, allowing unrestricted access to read, write, or delete the object.

• WriteOwner permissions on a group allow granting the right to add members to that group.

• WriteOwner permissions on a user allow granting full control over the user object.

• WriteOwner permissions on a computer object allow granting full control over the computer object.

• WriteOwner permissions on a domain object allow granting the ability to perform a DCSync operation.

UNIX-like

From UNIX-like systems, we can change the owner of an object using owneredit.py (Python)

owneredit.py -new-owner $ControlledUser -target $TargetRessource -action write $DOMAIN/$ControlledUser:$Password -dc-ip $DC_IP

The owner can now take full control of the object he owns using dacledit.py (Python)

dacledit.py -rights FullControl -principal $ControlledUser -target $TargetRessource -action write $DOMAIN/$ControlledUser:$Password -dc-ip $DC_IP

Windows

Resources

Abusing AD-DACL: WriteOwnerHacking Articles