/*!
 * @brief
 *  load library into memory
 *
 * @param Buffer
 *  buffer context to load library
 *  either a wide string or a buffer pointer 
 *  the to PE file to map (LIBRARYEX_BUFFER)
 *
 * @param Library
 *  loaded library pointer
 *
 * @param Flags
 *  flags
 *
 * @return
 *  status of function
 */
NTSTATUS LdrLibrary(
    _In_  PVOID  Buffer,
    _Out_ PVOID* Library,
    _In_  ULONG  Flags
);

PVOID Module = { 0 };
ULONG Flags  = { 0 };

//
// mapping flags to be used by the library
//
Flags = LIBRARYEX_NONE; 

//
// map file into memory
//
if ( ! NT_SUCCESS( Status = LdrLibrary( L"advapi32.dll", &Module, Flags ) ) ) {
    printf( "[-] LdrLibraryEx Failed: %p\n", Status );
    return; 
}

printf( "[*] Module @ %p\n", Module );

PVOID Module = { 0 };
ULONG Flags  = { 0 };

//
// mapping flags to be used by the library
//
Flags = LIBRARYEX_NONE  | 
        LIBRARYEX_BUFFER; 

//
// read file on disk into memory
//
if ( ! ( Image = ReadFileBuffer( L"C:\\Windows\\System32\\advapi32.dll", NULL ) ) ) {
    puts( "[-] ReadFileBuffer Failed" );
    return;
}

//
// map file into memory
//
if ( ! NT_SUCCESS( Status = LdrLibrary( Image, &Module, Flags ) ) ) {
    printf( "[-] LdrLibraryEx Failed: %p\n", Status );
    return;
}

printf( "[*] Module @ %p\n", Module );

//
// map file into memory
//
if ( ! NT_SUCCESS( Status = LdrLibrary( L"api-ms-win-base-util-l1-1-0.dll", &Module, Flags ) ) ) {
    printf( "[-] LdrLibraryEx Failed: %p\n", Status );
    return;
}

printf( "[*] Module @ %p\n",  );

//
// mapping flags to be used by the library
// and insert the loaded module into Peb
//
Flags = LIBRARYEX_BYPASS_LOAD_CALLBACK |
        LIBRARYEX_NO_ENTRY;

//
// init LibraryEx context
//
if ( ! NT_SUCCESS( Status = LdrLibraryCtx( &Ctx, Flags ) ) ) {
    printf( "[-] LdrLibraryCtx Failed: %d\n", Status );
    goto END;
}

//
// hook function
//
Ctx.LdrLoadDll = C_PTR( HookLdrLoadDll );

//
// map file into memory
//
if ( ! NT_SUCCESS( Status = LdrLibraryEx( &Ctx, L"cryptsp.dll", &Module, Flags ) ) ) {
    printf( "[-] LdrLibraryEx Failed: %p\n", Status );
    return; 
}