c# - How to use Windows API AuditEnumerateCategories function in PowerShell? -


i want current advanced security audit policy using powershell. use auditpol.exe, ouput different per os language, makes difficult parse.

the settings stored in reg_none value in hkey_local_machine\security\policy\poladtev. try parse value of that unofficial structure table. preffered approach, however, use windows api function auditquerysystempolicy of advapi32.dll.

with great of this article, created type in powershell follows. 

$memberdefinition = @' [dllimport("advapi32.dll", setlasterror = true)]     public static extern bool auditenumeratecategories(         out intptr ppauditcategoriesarray,          out uint pcountreturned);  [dllimport("advapi32.dll", setlasterror = true)]     public static extern bool auditlookupcategoryname(         ref guid pauditcategoryguid,          out stringbuilder ppszcategoryname);  [dllimport("advapi32.dll", setlasterror = true)]     private static extern bool auditenumeratesubcategories(         ref guid pauditcategoryguid,          bool bretrieveallsubcategories,          out intptr ppauditsubcategoriesarray,          out uint pcountreturned);  [dllimport("advapi32.dll", setlasterror = true)]     public static extern bool auditlookupsubcategoryname(         ref guid pauditsubcategoryguid,          out stringbuilder ppszsubcategoryname);  [dllimport("advapi32.dll")]     public static extern void auditfree(         intptr buffer);  [dllimport("advapi32.dll", setlasterror = true)]     public static extern bool auditquerysystempolicy(         guid psubcategoryguids,          uint policycount,          out intptr ppauditpolicy); '@  $advapi32 = add-type -memberdefinition $memberdefinition -name 'advapi32' -namespace 'win32' -usingnamespace system.text -passthru

the type created successfuly, fail first step - guids of audit categories. have issues different types. tried example 

$guid = [guid].makebyreftype() $count = [intptr]::zero [win32.advapi32]::auditenumeratecategories([ref]$guid, [ref]$count) # exception calling "auditenumeratecategories" 2 arguments: "the value "system.guid&" of type "system.runtimetype" cannot coverted "system.intptr".

i tried change auditenumeratecategories definition output intptr guid. output of ppauditcategoriesarray

a pointer single buffer contains both array of pointers guid structures , structures themselves.

unfortunately have no idea how handle in powershell.


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