a simple, small, header-only library for vmt hooking, written in c++17
only one .data section patch is applied to original process memory. the entire original vtable is copied over to a new instance, where hooked functions are pointer-swapped.
drag and drop the header file into your project, include it and you're almost set!
// include tinyvmt into your project
#include <tinyvmt.hh>
// one class instance should be created per object
tinyvmt::c_vmt instance;
// hook a function
instance.create( pointer_to_object_with_vtable );
instance.hook( index_of_hooked_function, reinterpret_cast<void*>(&hooked_fn) );
// unhook a function
instance.unhook( index_of_hooked_function );
// restore original vtable pointer
instance.restore( );
// inside the hooked function
void __thiscall hooked_fn( void* thisptr ) {
// your code goes here...
// call original function
instance.get_old_function< decltype ( &hooked_fn ) > ( index_of_hooked_function ) ( thisptr );
}if you think i missed anything or have any questions, feel free to open an issue. if you'd like to contribute, pull requests are always welcome.