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#include "pch.h"
#pragma hdrstop
#include "bmcommon.h"
static GENERIC_MAPPING FileGenericMapping = { FILE_GENERIC_READ, FILE_GENERIC_WRITE, FILE_GENERIC_EXECUTE, FILE_ALL_ACCESS };
static PSECURITY_DESCRIPTOR pSD; static HANDLE hToken;
EXTERN_C DWORD InitNtAccessChecks() { DWORD dwError=NO_ERROR; BOOL b; PWCHAR szMsg=NULL; HANDLE hProcessToken=NULL; b = ConvertStringSecurityDescriptorToSecurityDescriptorW(g_szSd, SDDL_REVISION_1, &pSD, NULL);
if (!b) { szMsg = L"SDDL"; goto GetError; }
if ( !OpenProcessToken( GetCurrentProcess(), TOKEN_DUPLICATE, &hProcessToken ) ) { szMsg = L"OpenProcessToken"; goto GetError; }
if ( !DuplicateToken( hProcessToken, SecurityImpersonation, &hToken ) ) { szMsg = L"DuplicateToken"; goto GetError; }
if ( !SetThreadToken( NULL, hToken ) ) { szMsg = L"SetThreadToken"; goto GetError; } Cleanup:
if ( hProcessToken ) { CloseHandle( hProcessToken ); }
if ( szMsg ) { wprintf (L"InitNtAccessChecks: %s: %x\n", szMsg, dwError); }
return dwError;
GetError: dwError = GetLastError(); goto Cleanup; }
EXTERN_C DWORD DoNtAccessChecks( IN ULONG NumChecks, IN DWORD Flags ) { DWORD dwError=NO_ERROR; PWCHAR StringSD = L"O:BAG:BAD:(OA;;GA;;;WD)S:(AU;FASA;GA;;;WD)"; BOOL b; ULONG i; PRIVILEGE_SET Privs = { 0 }; DWORD dwPrivLength=20*sizeof(LUID_AND_ATTRIBUTES); BOOL fGenOnClose[100]; PWCHAR szMsg=NULL; HANDLE hObj= (HANDLE) 333444;
if ( Flags & BMF_GenerateAudit ) { if ( Flags & BMF_UseObjTypeList ) { for (i=0; i < NumChecks; i++) { if (!AccessCheckByTypeResultListAndAuditAlarm( L"supersystemwithaudit", hObj, L"Kernel speed test", L"sample operation", pSD, g_Sid1, DESIRED_ACCESS, AuditEventObjectAccess, 0, ObjectTypeList, ObjectTypeListLength, &FileGenericMapping, FALSE, dwNtGrantedAccess, fNtAccessCheckResult, fGenOnClose )) { szMsg = L"AccessCheck"; goto GetError; } } } else { for (i=0; i < NumChecks; i++) { if (!AccessCheckAndAuditAlarm( L"mysystem", hObj, L"File", L"file-object", pSD, DESIRED_ACCESS, &FileGenericMapping, FALSE, &dwNtGrantedAccess[0], &fNtAccessCheckResult[0], &fGenOnClose[0] )) { szMsg = L"AccessCheck"; goto GetError; } } } } else { if ( Flags & BMF_UseObjTypeList ) { for (i=0; i < NumChecks; i++) { if (!AccessCheckByTypeResultList( pSD, g_Sid1, hToken, DESIRED_ACCESS, ObjectTypeList, ObjectTypeListLength, &FileGenericMapping, &Privs, &dwPrivLength, dwNtGrantedAccess, fNtAccessCheckResult )) { szMsg = L"AccessCheck"; goto GetError; } } } else { for (i=0; i < NumChecks; i++) { if (!AccessCheck( pSD, hToken, DESIRED_ACCESS, &FileGenericMapping, &Privs, &dwPrivLength, &dwNtGrantedAccess[0], &fNtAccessCheckResult[0] )) { szMsg = L"AccessCheck"; goto GetError; } } } } Cleanup: if ( szMsg ) { wprintf (L"%s: %x\n", szMsg, dwError); }
return dwError;
GetError: dwError = GetLastError(); goto Cleanup; }
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