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physmeme/physmeme-lib/map_driver.cpp

95 lines
2.3 KiB

#include "map_driver.hpp"
namespace physmeme
{
/*
Author: xerox
Date: 4/19/2020
*/
bool __cdecl map_driver(std::vector<std::uint8_t>& raw_driver)
{
physmeme::drv_image image(raw_driver);
physmeme::kernel_ctx ctx;
//
// 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));
};
//
// allocate memory in the kernel for the driver
//
std::uintptr_t pool_base = reinterpret_cast<std::uintptr_t>(ctx.allocate_pool(image.size(), NonPagedPool));
#if PHYSMEME_DEBUGGING true
std::cout << "[+] allocated " << std::hex << std::showbase << image.size() << " at: " << std::hex << std::showbase << pool_base << std::endl;
#endif
//
// fix the driver image
//
image.fix_imports(_get_module, _get_export_name);
#if PHYSMEME_DEBUGGING true
std::cout << "[+] fixed imports" << std::endl;
#endif
image.map();
#if PHYSMEME_DEBUGGING true
std::cout << "[+] sections mapped in memory" << std::endl;
#endif
image.relocate(pool_base);
#if PHYSMEME_DEBUGGING true
std::cout << "[+] relocations fixed" << std::endl;
#endif
//
// copy driver into the kernel
// this might blue screen if the image takes too long to copy
//
ctx.write_kernel(pool_base, image.data(), image.size());
//
// driver entry params
//
auto entry_point = pool_base + image.entry_point();
auto size = image.size();
//
// call driver entry
//
auto result = ctx.syscall<DRIVER_INITIALIZE>(reinterpret_cast<void*>(entry_point), pool_base, image.size());
#if PHYSMEME_DEBUGGING true
std::cout << "[+] driver entry returned: " << std::hex << result << std::endl;
#endif
//
// zero header of driver
//
ctx.zero_kernel_memory(pool_base, image.header_size());
#if PHYSMEME_DEBUGGING true
std::cout << "[+] zero'ed driver's pe header" << std::endl;
#endif
//
// close and unload vuln drivers
//
#if PHYSMEME_DEBUGGING true
std::cout << "[=] press enter to close" << std::endl;
#endif
physmeme::unload_drv();
std::cin.get();
}
bool __cdecl map_driver(std::uint8_t * image, std::size_t size)
{
auto data = std::vector<std::uint8_t>(image, image + size);
map_driver(data);
}
}