svc_mssql


Checking for privileges of the svc_mssql account after making the Nagoya

PS C:\Windows\system32> whoami /ALL
whoami /ALL
 
USER INFORMATION
----------------
 
User Name            SID                                           
==================== ==============================================
nagoya-ind\svc_mssql S-1-5-21-1969309164-1513403977-1686805993-1136
 
 
GROUP INFORMATION
-----------------
 
Group Name                                 Type             SID                                                             Attributes                                        
========================================== ================ =============================================================== ==================================================
Everyone                                   Well-known group S-1-1-0                                                         Mandatory group, Enabled by default, Enabled group
BUILTIN\Users                              Alias            S-1-5-32-545                                                    Mandatory group, Enabled by default, Enabled group
BUILTIN\Pre-Windows 2000 Compatible Access Alias            S-1-5-32-554                                                    Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\SERVICE                       Well-known group S-1-5-6                                                         Mandatory group, Enabled by default, Enabled group
CONSOLE LOGON                              Well-known group S-1-2-1                                                         Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\Authenticated Users           Well-known group S-1-5-11                                                        Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\This Organization             Well-known group S-1-5-15                                                        Mandatory group, Enabled by default, Enabled group
NT SERVICE\MSSQL$SQLEXPRESS                Well-known group S-1-5-80-3880006512-4290199581-1648723128-3569869737-3631323133 Enabled by default, Enabled group, Group owner    
LOCAL                                      Well-known group S-1-2-0                                                         Mandatory group, Enabled by default, Enabled group
Authentication authority asserted identity Well-known group S-1-18-1                                                        Mandatory group, Enabled by default, Enabled group
Mandatory Label\High Mandatory Level       Label            S-1-16-12288                                                                                                      
 
 
PRIVILEGES INFORMATION
----------------------
 
Privilege Name                Description                               State   
============================= ========================================= ========
SeAssignPrimaryTokenPrivilege Replace a process level token             Disabled
SeIncreaseQuotaPrivilege      Adjust memory quotas for a process        Disabled
SeMachineAccountPrivilege     Add workstations to domain                Disabled
SeChangeNotifyPrivilege       Bypass traverse checking                  Enabled 
SeManageVolumePrivilege       Perform volume maintenance tasks          Enabled 
SeImpersonatePrivilege        Impersonate a client after authentication Enabled 
SeCreateGlobalPrivilege       Create global objects                     Enabled 
SeIncreaseWorkingSetPrivilege Increase a process working set            Disabled
 
 
USER CLAIMS INFORMATION
-----------------------
 
User claims unknown.
 
Kerberos support for Dynamic Access Control on this device has been disabled.

The svc_mssql account is a service account with SeAssignPrimaryTokenPrivilege, SeMachineAccountPrivilege, SeManageVolumePrivilege, SeImpersonatePrivilege privileges. This calls for potato exploit. Moving on to the Privilege Escalation phase