WMI 101 for Pentesters

This is an article I wrote for The Ethical Hacker Network

WQL Injection

Generally in application security, the user input must be sanitized. When it comes to SQL injection the root cause most of the time is because the input not being sanitized properly. I was curious about Windows Management Instrumentation Query Language – WQL which is the SQL for WMI. Can we abuse WQL if the input is not sanitized?

I wrote a simple application in C++ which gets the service information from the Win32_Service class. It will display members such as Name, ProcessId, PathName, Description, etc.

This is the WQL Query.

As you can see I am using the IWbemServices::ExecQuery method to execute the query and enumerte its members using the IEnumWbemClassObject::Next method. (more…)