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physmeme/physmeme-lib/map_driver.cpp

84 lines
1.7 KiB

#include <windows.h>
#include <iostream>
#include <fstream>
#include "kernel_ctx/kernel_ctx.h"
#include "drv_image/drv_image.h"
namespace physmeme
{
bool __cdecl map_driver(std::vector<std::uint8_t>& raw_driver)
{
physmeme::drv_image image(raw_driver);
physmeme::kernel_ctx ctx;
//
// we dont need the driver loaded anymore
//
physmeme::unload_drv();
//
// lambdas used for fixing driver image
//
const auto _get_module = [&](std::string_view name)
{
return util::get_module_base(name.data());
};
const auto _get_export_name = [&](const char* base, const char* name)
{
return reinterpret_cast<std::uintptr_t>(util::get_module_export(base, name));
};
//
// fix the driver image
//
image.fix_imports(_get_module, _get_export_name);
image.map();
//
// allocate memory in the kernel for the driver
//
const auto pool_base =
ctx.allocate_pool(
image.size(),
NonPagedPool
);
if (!pool_base)
return -1;
image.relocate(pool_base);
//
// copy driver into the kernel
//
ctx.write_kernel(pool_base, image.data(), image.size());
//
// driver entry
//
auto entry_point = reinterpret_cast<std::uintptr_t>(pool_base) + image.entry_point();
//
// call driver entry
//
auto result = ctx.syscall<DRIVER_INITIALIZE>(
reinterpret_cast<void*>(entry_point),
reinterpret_cast<std::uintptr_t>(pool_base),
image.size()
);
//
// zero driver headers
//
ctx.zero_kernel_memory(pool_base, image.header_size());
return !result; // 0x0 means STATUS_SUCCESS
}
bool __cdecl map_driver(std::uint8_t * image, std::size_t size)
{
auto data = std::vector<std::uint8_t>(image, image + size);
return map_driver(data);
}
}