init commit

master
_xeroxz 4 years ago
parent b7db7c9c86
commit 09d0342da6

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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 16
VisualStudioVersion = 16.0.30907.101
MinimumVisualStudioVersion = 10.0.40219.1
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "xtils", "xtils\xtils.vcxproj", "{47343E59-10B7-4F29-B7A0-561B106F7D0B}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Release|x64 = Release|x64
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{47343E59-10B7-4F29-B7A0-561B106F7D0B}.Release|x64.ActiveCfg = Release|x64
{47343E59-10B7-4F29-B7A0-561B106F7D0B}.Release|x64.Build.0 = Release|x64
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {5FCE9B1F-FCF9-4D0A-9B5E-207C218B537E}
EndGlobalSection
EndGlobal

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#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <filesystem>
#include "xtils.hpp"
int __cdecl main(int argc, const char** argv)
{
auto utils = xtils::um_t::get_instance();
const auto explorer_pid =
utils->get_pid(L"explorer.exe");
const auto explorer_module_base =
utils->get_process_base(utils->get_handle(explorer_pid).get());
std::printf("> explorer pid = 0x%x, module base = 0x%p\n",
explorer_pid, explorer_module_base);
std::map<std::wstring, std::uintptr_t> modules;
if (!utils->get_modules(explorer_pid, modules))
{
std::printf("[!] failed to get modules...\n");
return -1;
}
std::printf("> user32.dll base = 0x%p\n",
modules[L"user32.dll"]);
const auto [notepad_handle, notepad_pid, notepad_base] =
utils->start_exec("C:\\Windows\\System32\\notepad.exe");
std::printf("> notepad handle = 0x%x, notepad pid = 0x%x, notepad_base = 0x%p\n",
notepad_handle, notepad_pid, notepad_base);
const auto module_base = utils->load_lib(notepad_handle,
(std::filesystem::current_path()
.string() + "\\hello-world-x64.dll").c_str());
std::printf("> module base = 0x%p\n", module_base);
auto km_utils = xtils::km_t::get_instance();
km_utils->each_module(
[](PRTL_PROCESS_MODULE_INFORMATION kmodule_info, const char* module_name) -> bool
{
std::printf("> module name = %s, module base = 0x%p\n",
module_name, kmodule_info->ImageBase);
return true;
}
);
std::printf("> ntoskrnl base = 0x%p\n", km_utils->get_base("ntoskrnl.exe"));
}

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#pragma once
#define _CRT_SECURE_NO_WARNINGS
#pragma comment(lib, "ntdll.lib")
#include <cstdint>
#include <string>
#include <map>
#include <memory>
#include <algorithm>
#include <functional>
#include <Windows.h>
#include <tlhelp32.h>
#include <psapi.h>
#include <winternl.h>
#include <ntstatus.h>
#define LOG_SIG "[xtils]"
#define LOG(...) \
{ \
char buff[256]; \
snprintf(buff, sizeof buff, LOG_SIG ## __VA_ARGS__); \
OutputDebugStringA(buff); \
}
#define NT_HEADER(x) reinterpret_cast<PIMAGE_NT_HEADERS>( uint64_t(x) + reinterpret_cast<PIMAGE_DOS_HEADER>(x)->e_lfanew )
typedef struct _RTL_PROCESS_MODULE_INFORMATION
{
HANDLE Section;
PVOID MappedBase;
PVOID ImageBase;
ULONG ImageSize;
ULONG Flags;
USHORT LoadOrderIndex;
USHORT InitOrderIndex;
USHORT LoadCount;
USHORT OffsetToFileName;
UCHAR FullPathName[256];
} RTL_PROCESS_MODULE_INFORMATION, * PRTL_PROCESS_MODULE_INFORMATION;
typedef struct _RTL_PROCESS_MODULES
{
ULONG NumberOfModules;
RTL_PROCESS_MODULE_INFORMATION Modules[1];
} RTL_PROCESS_MODULES, * PRTL_PROCESS_MODULES;
namespace xtils
{
using uq_handle = std::unique_ptr<void, decltype(&CloseHandle)>;
class um_t
{
using module_callback_t = std::function<bool(std::wstring, std::uintptr_t)>;
using module_map_t = std::map<std::wstring, std::uintptr_t>;
public:
static auto get_instance() -> um_t* { static um_t obj; return &obj; }
auto get_modules(std::uint32_t pid, module_map_t& module_map) -> bool
{
uq_handle snapshot = { CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, pid), &CloseHandle };
if (snapshot.get() == INVALID_HANDLE_VALUE)
return false;
MODULEENTRY32 module_info = { sizeof MODULEENTRY32 };
Module32First(snapshot.get(), &module_info);
// lowercase the module name...
std::for_each(module_info.szModule,
module_info.szModule + wcslen(module_info.szModule) * 2,
[](wchar_t& c) { c = ::towlower(c); });
module_map[module_info.szModule] = reinterpret_cast<std::uintptr_t>(module_info.modBaseAddr);
for (Module32First(snapshot.get(), &module_info); Module32Next(snapshot.get(), &module_info);)
{
// lowercase the module name...
std::for_each(module_info.szModule,
module_info.szModule + wcslen(module_info.szModule) * 2,
[](wchar_t& c) { c = ::towlower(c); });
module_map[module_info.szModule] =
reinterpret_cast<std::uintptr_t>(module_info.modBaseAddr);
}
return true;
}
void each_module(std::uint32_t pid, module_callback_t callback)
{
module_map_t module_map;
if (!get_modules(pid, module_map))
return;
for (auto& [module_name, module_base] : module_map)
if (!callback(module_name, module_base))
break;
}
// https://github.com/PierreCiholas/GetBaseAddress/blob/master/main.cpp#L7
auto get_process_base(HANDLE proc_handle)->std::uintptr_t
{
HMODULE lph_modules[1024];
DWORD needed = 0u;
if (!EnumProcessModules(proc_handle, lph_modules, sizeof(lph_modules), &needed))
return {};
TCHAR mod_name[MAX_PATH];
if (!GetModuleFileNameEx(proc_handle, lph_modules[0], mod_name, sizeof(mod_name) / sizeof(TCHAR)))
return {};
return reinterpret_cast<std::uintptr_t>(lph_modules[0]);
}
auto get_pid(const wchar_t* proc_name) -> std::uint32_t
{
uq_handle snapshot = { CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, NULL), &CloseHandle };
if (snapshot.get() == INVALID_HANDLE_VALUE)
return {};
PROCESSENTRY32W process_entry{ sizeof(PROCESSENTRY32W) };
Process32FirstW(snapshot.get(), &process_entry);
if (!std::wcscmp(proc_name, process_entry.szExeFile))
return process_entry.th32ProcessID;
for (Process32FirstW(snapshot.get(), &process_entry); Process32NextW(snapshot.get(), &process_entry); )
if (!std::wcscmp(proc_name, process_entry.szExeFile))
return process_entry.th32ProcessID;
return {};
}
auto get_handle(const wchar_t* proc_name, DWORD access = PROCESS_ALL_ACCESS) -> uq_handle
{
std::uint32_t pid = 0u;
if (!(pid = get_pid(proc_name)))
return { NULL, &CloseHandle };
return { OpenProcess(access, FALSE, pid), &CloseHandle };
}
auto get_handle(std::uint32_t pid, DWORD access = PROCESS_ALL_ACCESS)->uq_handle
{
if (!pid) return { NULL, &CloseHandle };
return { OpenProcess(access, FALSE, pid), &CloseHandle };
}
auto load_lib(HANDLE proc_handle, const char* dll_path) -> std::uintptr_t
{
const auto dll_path_page =
VirtualAllocEx(
proc_handle,
nullptr,
0x1000,
MEM_COMMIT | MEM_RESERVE,
PAGE_READWRITE
);
if (!dll_path_page)
return {};
SIZE_T handled_bytes;
if (!WriteProcessMemory(proc_handle, dll_path_page,
dll_path, strlen(dll_path), &handled_bytes))
return {};
// +6 for string address
// +16 for LoadLibrary address...
unsigned char jmp_code[] =
{
0x48, 0x83, 0xEC, 0x28, // sub rsp, 0x28
0x48, 0xB9, 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, // mov rcx, &dllpath
0x48, 0xB8, 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, // mov rax, &LoadLibraryA
0xFF, 0xD0, // call rax
0x48, 0x83, 0xC4, 0x28, // add rsp, 0x28
0x48, 0x89, 0x05, 0x01, 0x00, 0x00, 0x00, // mov [rip+1], rax
0xC3 // ret
};
*reinterpret_cast<std::uintptr_t*>(&jmp_code[6]) =
reinterpret_cast<std::uintptr_t>(dll_path_page);
*reinterpret_cast<std::uintptr_t*>(&jmp_code[16]) =
reinterpret_cast<std::uintptr_t>(&LoadLibraryA);
const auto jmp_code_page =
VirtualAllocEx(
proc_handle,
nullptr,
0x1000,
MEM_COMMIT | MEM_RESERVE,
PAGE_EXECUTE_READWRITE
);
if (!jmp_code_page)
return {};
if (!WriteProcessMemory(proc_handle,
jmp_code_page, jmp_code, sizeof jmp_code, &handled_bytes))
return {};
DWORD tid = 0u;
auto thandle = CreateRemoteThread(proc_handle, nullptr,
NULL, (LPTHREAD_START_ROUTINE)jmp_code_page, nullptr, NULL, &tid);
if (thandle == INVALID_HANDLE_VALUE)
return {};
WaitForSingleObject(thandle, INFINITE);
// read the base address out of the shellcode...
std::uintptr_t module_base = 0u;
if (!ReadProcessMemory(proc_handle, reinterpret_cast<void*>(
reinterpret_cast<std::uintptr_t>(jmp_code_page) + sizeof jmp_code),
&module_base, sizeof module_base, &handled_bytes))
return {};
return module_base;
}
auto start_exec(const char* image_path, char* cmdline = nullptr,
bool suspend = false) -> std::tuple<HANDLE, std::uint32_t, std::uintptr_t>
{
STARTUPINFOA info = { sizeof info };
PROCESS_INFORMATION proc_info;
if (!CreateProcessA(image_path, cmdline, nullptr,
nullptr, false,
suspend ? CREATE_SUSPENDED | CREATE_NEW_CONSOLE : CREATE_NEW_CONSOLE,
nullptr, nullptr, &info, &proc_info
))
return { {}, {}, {} };
Sleep(1); // sleep just for a tiny amount of time so that get_process_base works...
return { proc_info.hProcess, proc_info.dwProcessId, get_process_base(proc_info.hProcess) };
}
std::uintptr_t scan(std::uintptr_t base, std::uint32_t size, const char* pattern, const char* mask)
{
static const auto check_mask =
[&](const char* base, const char* pattern, const char* mask) -> bool
{
for (; *mask; ++base, ++pattern, ++mask)
if (*mask == 'x' && *base != *pattern)
return false;
return true;
};
size -= strlen(mask);
for (auto i = 0; i <= size; ++i)
{
void* addr = (void*)&(((char*)base)[i]);
if (check_mask((char*)addr, pattern, mask))
return reinterpret_cast<std::uintptr_t>(addr);
}
return {};
}
private:
explicit um_t() {}
};
class km_t
{
using kmodule_callback_t = std::function<bool(PRTL_PROCESS_MODULE_INFORMATION, const char*)>;
public:
static auto get_instance() -> km_t* { static km_t obj; return &obj; };
auto get_base(const char* drv_name)->std::uintptr_t
{
void* buffer = nullptr;
DWORD buffer_size = NULL;
auto status = NtQuerySystemInformation(
static_cast<SYSTEM_INFORMATION_CLASS>(0xB),
buffer, buffer_size, &buffer_size);
while (status == STATUS_INFO_LENGTH_MISMATCH)
{
VirtualFree(buffer, NULL, MEM_RELEASE);
buffer = VirtualAlloc(nullptr, buffer_size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
status = NtQuerySystemInformation(
static_cast<SYSTEM_INFORMATION_CLASS>(0xB),
buffer, buffer_size, &buffer_size);
}
if (!NT_SUCCESS(status))
{
VirtualFree(buffer, NULL, MEM_RELEASE);
return NULL;
}
const auto modules = static_cast<PRTL_PROCESS_MODULES>(buffer);
for (auto idx = 0u; idx < modules->NumberOfModules; ++idx)
{
const auto current_module_name =
std::string(reinterpret_cast<char*>(
modules->Modules[idx].FullPathName) +
modules->Modules[idx].OffsetToFileName);
if (!_stricmp(current_module_name.c_str(), drv_name))
{
const auto result =
reinterpret_cast<std::uint64_t>(
modules->Modules[idx].ImageBase);
VirtualFree(buffer, NULL, MEM_RELEASE);
return result;
}
}
VirtualFree(buffer, NULL, MEM_RELEASE);
return NULL;
}
void each_module(kmodule_callback_t callback)
{
void* buffer = nullptr;
DWORD buffer_size = NULL;
auto status = NtQuerySystemInformation(
static_cast<SYSTEM_INFORMATION_CLASS>(0xB),
buffer, buffer_size, &buffer_size);
while (status == STATUS_INFO_LENGTH_MISMATCH)
{
VirtualFree(buffer, NULL, MEM_RELEASE);
buffer = VirtualAlloc(nullptr, buffer_size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
status = NtQuerySystemInformation(
static_cast<SYSTEM_INFORMATION_CLASS>(0xB),
buffer, buffer_size, &buffer_size);
}
if (!NT_SUCCESS(status))
{
VirtualFree(buffer, NULL, MEM_RELEASE);
return;
}
const auto modules = static_cast<PRTL_PROCESS_MODULES>(buffer);
for (auto idx = 0u; idx < modules->NumberOfModules; ++idx)
{
auto full_path = std::string(
reinterpret_cast<char*>(
modules->Modules[idx].FullPathName));
if (full_path.find("\\SystemRoot\\") != std::string::npos)
full_path.replace(full_path.find("\\SystemRoot\\"),
sizeof("\\SystemRoot\\") - 1, std::string(getenv("SYSTEMROOT")).append("\\"));
else if (full_path.find("\\??\\") != std::string::npos)
full_path.replace(full_path.find("\\??\\"),
sizeof("\\??\\") - 1, "");
if (!callback(&modules->Modules[idx], full_path.c_str()))
{
VirtualFree(buffer, NULL, MEM_RELEASE);
return;
}
}
VirtualFree(buffer, NULL, MEM_RELEASE);
return;
}
auto get_export(const char* drv_name, const char* export_name)->std::uintptr_t
{
void* buffer = nullptr;
DWORD buffer_size = NULL;
NTSTATUS status = NtQuerySystemInformation(
static_cast<SYSTEM_INFORMATION_CLASS>(0xB),
buffer,
buffer_size,
&buffer_size
);
while (status == STATUS_INFO_LENGTH_MISMATCH)
{
VirtualFree(buffer, 0, MEM_RELEASE);
buffer = VirtualAlloc(nullptr, buffer_size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
status = NtQuerySystemInformation(
static_cast<SYSTEM_INFORMATION_CLASS>(0xB),
buffer,
buffer_size,
&buffer_size
);
}
if (!NT_SUCCESS(status))
{
VirtualFree(buffer, 0, MEM_RELEASE);
return NULL;
}
const auto modules = static_cast<PRTL_PROCESS_MODULES>(buffer);
for (auto idx = 0u; idx < modules->NumberOfModules; ++idx)
{
// find module and then load library it
const std::string current_module_name =
std::string(reinterpret_cast<char*>(
modules->Modules[idx].FullPathName) +
modules->Modules[idx].OffsetToFileName
);
if (!_stricmp(current_module_name.c_str(), drv_name))
{
auto full_path = std::string(
reinterpret_cast<char*>(
modules->Modules[idx].FullPathName));
full_path.replace(full_path.find("\\SystemRoot\\"),
sizeof("\\SystemRoot\\") - 1, std::string(getenv("SYSTEMROOT")).append("\\"));
const auto module_base =
LoadLibraryExA(
full_path.c_str(),
NULL,
DONT_RESOLVE_DLL_REFERENCES
);
const auto image_base =
reinterpret_cast<std::uintptr_t>(
modules->Modules[idx].ImageBase);
// free the RTL_PROCESS_MODULES buffer...
VirtualFree(buffer, NULL, MEM_RELEASE);
const auto rva =
reinterpret_cast<std::uintptr_t>(
GetProcAddress(module_base, export_name)) -
reinterpret_cast<std::uintptr_t>(module_base);
return image_base + rva;
}
}
VirtualFree(buffer, NULL, MEM_RELEASE);
return NULL;
}
private:
explicit km_t() {}
};
class pe_t
{
using section_callback_t = std::function<bool(PIMAGE_SECTION_HEADER, std::uintptr_t)>;
public:
static auto get_instance() -> pe_t* { static pe_t obj; return &obj; }
// returns an std::vector containing all of the bytes of the section
// and also the RVA from the image base to the beginning of the section...
auto get_section(std::uintptr_t module_base,
const char* section_name) -> std::pair<std::vector<std::uint8_t>, std::uint32_t>
{
const auto nt_headers = reinterpret_cast<PIMAGE_NT_HEADERS>(
reinterpret_cast<PIMAGE_DOS_HEADER>(module_base)->e_lfanew + module_base);
const auto section_header =
reinterpret_cast<PIMAGE_SECTION_HEADER>(
reinterpret_cast<std::uintptr_t>(nt_headers) + sizeof(DWORD)
+ sizeof(IMAGE_FILE_HEADER) + nt_headers->FileHeader.SizeOfOptionalHeader);
for (auto idx = 0u; idx < nt_headers->FileHeader.NumberOfSections; ++idx)
{
const auto _section_name =
reinterpret_cast<char*>(
section_header[idx].Name);
// sometimes section names are not null terminated...
if (!strncmp(_section_name, section_name, strlen(section_name) - 1))
{
const auto section_base =
reinterpret_cast<std::uint8_t*>(
module_base + section_header[idx].VirtualAddress);
const auto section_end =
reinterpret_cast<std::uint8_t*>(
section_base + section_header[idx].Misc.VirtualSize);
std::vector<std::uint8_t> section_bin(section_base, section_end);
return { section_bin, section_header[idx].VirtualAddress };
}
}
return { {}, {} };
}
void each_section(section_callback_t callback, std::uintptr_t module_base)
{
if (!module_base)
return;
const auto nt_headers = reinterpret_cast<PIMAGE_NT_HEADERS>(
reinterpret_cast<PIMAGE_DOS_HEADER>(module_base)->e_lfanew + module_base);
const auto section_header =
reinterpret_cast<PIMAGE_SECTION_HEADER>(
reinterpret_cast<std::uintptr_t>(nt_headers) + sizeof(DWORD)
+ sizeof(IMAGE_FILE_HEADER) + nt_headers->FileHeader.SizeOfOptionalHeader);
for (auto idx = 0u; idx < nt_headers->FileHeader.NumberOfSections; ++idx)
{
const auto _section_name =
reinterpret_cast<char*>(
section_header[idx].Name);
// keep looping until the callback returns false...
if (!callback(&section_header[idx], module_base))
return;
}
}
private:
explicit pe_t() {};
};
}

@ -0,0 +1,63 @@
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<Configuration>Release</Configuration>
<Platform>x64</Platform>
</ProjectConfiguration>
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<VCProjectVersion>16.0</VCProjectVersion>
<Keyword>Win32Proj</Keyword>
<ProjectGuid>{47343e59-10b7-4f29-b7a0-561b106f7d0b}</ProjectGuid>
<RootNamespace>xtils</RootNamespace>
<WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
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<ConformanceMode>true</ConformanceMode>
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<Optimization>Disabled</Optimization>
</ClCompile>
<Link>
<SubSystem>Console</SubSystem>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<OptimizeReferences>true</OptimizeReferences>
<GenerateDebugInformation>true</GenerateDebugInformation>
</Link>
</ItemDefinitionGroup>
<ItemGroup>
<ClCompile Include="main.cpp" />
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@ -0,0 +1,23 @@
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