> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/active-directory/kerberos/kerberos-user-enumeration.md). # User enumeration with Kerberos Active Directory security notes for User enumeration with Kerberos, covering enumeration, Kerberos, credentials, ACL abuse, lateral movement, exploitation workflow, and validation steps. ### Objective Kerberos can be used to check if users exist in the domain. This technique is useful because the KDC may respond differently depending on whether the user exists or not. {% embed url="" %} ### Creating a list of users We create a file: {% code overflow="wrap" %} ```bash user1 user2 test1 Administrator Administrador jordan carlos ``` {% endcode %} ### Enumeration with Kerbrute We use `kerbrute` to check valid users: {% code overflow="wrap" %} ```bash kerbrute userenum -d whoami.local --dc dc01.whoami.local usernames.txt ``` {% endcode %} Result in the lab: ``` user1 user2 Administrador ``` This means that these accounts exist in the domain.

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