Add files

src/utils/hook.cpp

@@ -0,0 +1,193 @@
+#include "hook.hpp"
+#include "string.hpp"
+
+#include <MinHook.h>
+
+namespace utils::hook
+{
+	namespace
+	{
+		[[maybe_unused]] class _
+		{
+		public:
+			_()
+			{
+				if (MH_Initialize() != MH_OK)
+				{
+					throw std::runtime_error("Failed to initialize MinHook");
+				}
+			}
+
+			~_()
+			{
+				MH_Uninitialize();
+			}
+		} __;
+	}
+
+	detour::detour(const size_t place, void* target) : detour(reinterpret_cast<void*>(place), target)
+	{
+	}
+
+	detour::detour(void* place, void* target)
+	{
+		this->create(place, target);
+	}
+
+	detour::~detour()
+	{
+		this->clear();
+	}
+
+	void detour::enable() const
+	{
+		MH_EnableHook(this->place_);
+	}
+
+	void detour::disable() const
+	{
+		MH_DisableHook(this->place_);
+	}
+
+	void detour::create(void* place, void* target)
+	{
+		this->clear();
+		this->place_ = place;
+
+		if (MH_CreateHook(this->place_, target, &this->original_) != MH_OK)
+		{
+			throw std::runtime_error(string::va("Unable to create hook at location: %p", this->place_));
+		}
+
+		this->enable();
+	}
+
+	void detour::create(const size_t place, void* target)
+	{
+		this->create(reinterpret_cast<void*>(place), target);
+	}
+
+	void detour::clear()
+	{
+		if (this->place_)
+		{
+			MH_RemoveHook(this->place_);
+		}
+
+		this->place_ = nullptr;
+		this->original_ = nullptr;
+	}
+
+	void* detour::get_original() const
+	{
+		return this->original_;
+	}
+
+	void nop(void* place, const size_t length)
+	{
+		DWORD old_protect{};
+		VirtualProtect(place, length, PAGE_EXECUTE_READWRITE, &old_protect);
+
+		std::memset(place, 0x90, length);
+
+		VirtualProtect(place, length, old_protect, &old_protect);
+		FlushInstructionCache(GetCurrentProcess(), place, length);
+	}
+
+	void nop(const size_t place, const size_t length)
+	{
+		nop(reinterpret_cast<void*>(place), length);
+	}
+
+	void copy(void* place, const void* data, const size_t length)
+	{
+		DWORD old_protect{};
+		VirtualProtect(place, length, PAGE_EXECUTE_READWRITE, &old_protect);
+
+		std::memmove(place, data, length);
+
+		VirtualProtect(place, length, old_protect, &old_protect);
+		FlushInstructionCache(GetCurrentProcess(), place, length);
+	}
+
+	void copy(const size_t place, const void* data, const size_t length)
+	{
+		copy(reinterpret_cast<void*>(place), data, length);
+	}
+
+	bool is_relatively_far(const void* pointer, const void* data, const int offset)
+	{
+		const int64_t diff = size_t(data) - (size_t(pointer) + offset);
+		const auto small_diff = int32_t(diff);
+		return diff != int64_t(small_diff);
+	}
+
+	void call(void* pointer, void* data)
+	{
+		if (is_relatively_far(pointer, data))
+		{
+			throw std::runtime_error("Too far away to create 32bit relative branch");
+		}
+
+		auto* patch_pointer = PBYTE(pointer);
+		set<uint8_t>(patch_pointer, 0xE8);
+		set<int32_t>(patch_pointer + 1, int32_t(size_t(data) - (size_t(pointer) + 5)));
+	}
+
+	void call(const size_t pointer, void* data)
+	{
+		return call(reinterpret_cast<void*>(pointer), data);
+	}
+
+	void call(const size_t pointer, const size_t data)
+	{
+		return call(pointer, reinterpret_cast<void*>(data));
+	}
+
+	void set(std::uintptr_t address, std::vector<std::uint8_t>&& bytes)
+	{
+		DWORD oldProtect = 0;
+
+		auto* place = reinterpret_cast<void*>(address);
+		VirtualProtect(place, bytes.size(), PAGE_EXECUTE_READWRITE, &oldProtect);
+		memcpy(place, bytes.data(), bytes.size());
+		VirtualProtect(place, bytes.size(), oldProtect, &oldProtect);
+		FlushInstructionCache(GetCurrentProcess(), place, bytes.size());
+	}
+
+	void set(std::uintptr_t address, void* buffer, size_t size)
+	{
+		DWORD oldProtect = 0;
+
+		auto* place = reinterpret_cast<void*>(address);
+		VirtualProtect(place, size, PAGE_EXECUTE_READWRITE, &oldProtect);
+		memcpy(place, buffer, size);
+		VirtualProtect(place, size, oldProtect, &oldProtect);
+		FlushInstructionCache(GetCurrentProcess(), place, size);
+	}
+
+	void jump(std::uintptr_t address, void* destination)
+	{
+		if (!address) return;
+
+		std::uint8_t* bytes = new std::uint8_t[5];
+		*bytes = 0xE9;
+		*reinterpret_cast<std::uint32_t*>(bytes + 1) = CalculateRelativeJMPAddress(address, destination);
+
+		set(address, bytes, 5);
+
+		delete[] bytes;
+	}
+
+	void redirect_jump(void* pointer, void* data)
+	{
+		char* operand_ptr = static_cast<char*>(pointer) + 2;
+		int new_operand = reinterpret_cast<int>(data) - (reinterpret_cast<int>(pointer) + 6);
+		set<int>(operand_ptr, new_operand);
+	}
+
+	void redirect_jump(size_t pointer, void* data)
+	{
+		redirect_jump(reinterpret_cast<void*>(pointer), data);
+	}
+}

src/utils/hook.hpp

@@ -0,0 +1,120 @@
+#pragma once
+#include "signature.hpp"
+
+#define CalculateRelativeJMPAddress(X, Y) (((std::uintptr_t)Y - (std::uintptr_t)X) - 5)
+
+namespace utils::hook
+{
+	class detour
+	{
+	public:
+		detour() = default;
+		detour(void* place, void* target);
+		detour(size_t place, void* target);
+		~detour();
+
+		detour(detour&& other) noexcept
+		{
+			this->operator=(std::move(other));
+		}
+
+		detour& operator= (detour&& other) noexcept
+		{
+			if (this != &other)
+			{
+				this->~detour();
+
+				this->place_ = other.place_;
+				this->original_ = other.original_;
+
+				other.place_ = nullptr;
+				other.original_ = nullptr;
+			}
+
+			return *this;
+		}
+
+		detour(const detour&) = delete;
+		detour& operator= (const detour&) = delete;
+
+		void enable() const;
+		void disable() const;
+
+		void create(void* place, void* target);
+		void create(size_t place, void* target);
+		void clear();
+
+		template <typename T>
+		T* get() const
+		{
+			return static_cast<T*>(this->get_original());
+		}
+
+		template <typename T, typename... Args>
+		T invoke(Args... args)
+		{
+			return static_cast<T(*)(Args ...)>(this->get_original())(args...);
+		}
+
+		[[nodiscard]] void* get_original() const;
+
+	private:
+		void* place_{};
+		void* original_{};
+	};
+
+	void nop(void* place, size_t length);
+	void nop(size_t place, size_t length);
+
+	void copy(void* place, const void* data, size_t length);
+	void copy(size_t place, const void* data, size_t length);
+
+	bool is_relatively_far(const void* pointer, const void* data, int offset = 5);
+
+	void call(void* pointer, void* data);
+	void call(size_t pointer, void* data);
+	void call(size_t pointer, size_t data);
+
+	void jump(std::uintptr_t address, void* destination);
+
+	void redirect_jump(void* pointer, void* data);
+	void redirect_jump(size_t pointer, void* data);
+
+	template <typename T>
+	T extract(void* address)
+	{
+		const auto data = static_cast<uint8_t*>(address);
+		const auto offset = *reinterpret_cast<int32_t*>(data);
+		return reinterpret_cast<T>(data + offset + 4);
+	}
+
+	template <typename T>
+	static void set(void* place, T value)
+	{
+		DWORD old_protect;
+		VirtualProtect(place, sizeof(T), PAGE_EXECUTE_READWRITE, &old_protect);
+
+		*static_cast<T*>(place) = value;
+
+		VirtualProtect(place, sizeof(T), old_protect, &old_protect);
+		FlushInstructionCache(GetCurrentProcess(), place, sizeof(T));
+	}
+
+	template <typename T>
+	static void set(const size_t place, T value)
+	{
+		return set<T>(reinterpret_cast<void*>(place), value);
+	}
+
+	template <typename T, typename... Args>
+	static T invoke(size_t func, Args ... args)
+	{
+		return reinterpret_cast<T(*)(Args ...)>(func)(args...);
+	}
+
+	template <typename T, typename... Args>
+	static T invoke(void* func, Args ... args)
+	{
+		return static_cast<T(*)(Args ...)>(func)(args...);
+	}
+}

src/utils/memory.cpp

@@ -0,0 +1,165 @@
+#include "memory.hpp"
+#include "nt.hpp"
+
+namespace utils
+{
+	memory::allocator memory::mem_allocator_;
+
+	memory::allocator::~allocator()
+	{
+		this->clear();
+	}
+
+	void memory::allocator::clear()
+	{
+		std::lock_guard _(this->mutex_);
+
+		for (auto& data : this->pool_)
+		{
+			memory::free(data);
+		}
+
+		this->pool_.clear();
+	}
+
+	void memory::allocator::free(void* data)
+	{
+		std::lock_guard _(this->mutex_);
+
+		const auto j = std::find(this->pool_.begin(), this->pool_.end(), data);
+		if (j != this->pool_.end())
+		{
+			memory::free(data);
+			this->pool_.erase(j);
+		}
+	}
+
+	void memory::allocator::free(const void* data)
+	{
+		this->free(const_cast<void*>(data));
+	}
+
+	void* memory::allocator::allocate(const size_t length)
+	{
+		std::lock_guard _(this->mutex_);
+
+		const auto data = memory::allocate(length);
+		this->pool_.push_back(data);
+		return data;
+	}
+
+	bool memory::allocator::empty() const
+	{
+		return this->pool_.empty();
+	}
+
+	char* memory::allocator::duplicate_string(const std::string& string)
+	{
+		std::lock_guard _(this->mutex_);
+
+		const auto data = memory::duplicate_string(string);
+		this->pool_.push_back(data);
+		return data;
+	}
+
+	void* memory::allocate(const size_t length)
+	{
+		return calloc(length, 1);
+	}
+
+	char* memory::duplicate_string(const std::string& string)
+	{
+		const auto new_string = allocate_array<char>(string.size() + 1);
+		std::memcpy(new_string, string.data(), string.size());
+		return new_string;
+	}
+
+	void memory::free(void* data)
+	{
+		if (data)
+		{
+			::free(data);
+		}
+	}
+
+	void memory::free(const void* data)
+	{
+		free(const_cast<void*>(data));
+	}
+
+	bool memory::is_set(const void* mem, const char chr, const size_t length)
+	{
+		const auto mem_arr = static_cast<const char*>(mem);
+
+		for (size_t i = 0; i < length; ++i)
+		{
+			if (mem_arr[i] != chr)
+			{
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	bool memory::is_bad_read_ptr(const void* ptr)
+	{
+		MEMORY_BASIC_INFORMATION mbi = {};
+		if (VirtualQuery(ptr, &mbi, sizeof(mbi)))
+		{
+			const DWORD mask = (PAGE_READONLY | PAGE_READWRITE | PAGE_WRITECOPY | PAGE_EXECUTE_READ |
+				PAGE_EXECUTE_READWRITE | PAGE_EXECUTE_WRITECOPY);
+			auto b = !(mbi.Protect & mask);
+			// check the page is not a guard page
+			if (mbi.Protect & (PAGE_GUARD | PAGE_NOACCESS)) b = true;
+
+			return b;
+		}
+		return true;
+	}
+
+	bool memory::is_bad_code_ptr(const void* ptr)
+	{
+		MEMORY_BASIC_INFORMATION mbi = {};
+		if (VirtualQuery(ptr, &mbi, sizeof(mbi)))
+		{
+			const DWORD mask = (PAGE_EXECUTE_READ | PAGE_EXECUTE_READWRITE | PAGE_EXECUTE_WRITECOPY);
+			auto b = !(mbi.Protect & mask);
+			// check the page is not a guard page
+			if (mbi.Protect & (PAGE_GUARD | PAGE_NOACCESS)) b = true;
+
+			return b;
+		}
+		return true;
+	}
+
+	bool memory::is_rdata_ptr(void* pointer)
+	{
+		const std::string rdata = ".rdata";
+		const auto pointer_lib = utils::nt::library::get_by_address(pointer);
+
+		for (const auto& section : pointer_lib.get_section_headers())
+		{
+			const auto size = sizeof(section->Name);
+			char name[size + 1];
+			name[size] = 0;
+			std::memcpy(name, section->Name, size);
+
+			if (name == rdata)
+			{
+				const auto target = size_t(pointer);
+				const size_t source_start = size_t(pointer_lib.get_ptr()) + section->PointerToRawData;
+				const size_t source_end = source_start + section->SizeOfRawData;
+
+				return target >= source_start && target <= source_end;
+			}
+		}
+
+		return false;
+	}
+
+	memory::allocator* memory::get_allocator()
+	{
+		return &memory::mem_allocator_;
+	}
+}

src/utils/memory.hpp

@@ -0,0 +1,75 @@
+#pragma once
+
+#include <mutex>
+#include <vector>
+
+namespace utils
+{
+	class memory final
+	{
+	public:
+		class allocator final
+		{
+		public:
+			~allocator();
+
+			void clear();
+
+			void free(void* data);
+
+			void free(const void* data);
+
+			void* allocate(size_t length);
+
+			template <typename T>
+			inline T* allocate()
+			{
+				return this->allocate_array<T>(1);
+			}
+
+			template <typename T>
+			inline T* allocate_array(const size_t count = 1)
+			{
+				return static_cast<T*>(this->allocate(count * sizeof(T)));
+			}
+
+			bool empty() const;
+
+			char* duplicate_string(const std::string& string);
+
+		private:
+			std::mutex mutex_;
+			std::vector<void*> pool_;
+		};
+
+		static void* allocate(size_t length);
+
+		template <typename T>
+		static inline T* allocate()
+		{
+			return allocate_array<T>(1);
+		}
+
+		template <typename T>
+		static inline T* allocate_array(const size_t count = 1)
+		{
+			return static_cast<T*>(allocate(count * sizeof(T)));
+		}
+
+		static char* duplicate_string(const std::string& string);
+
+		static void free(void* data);
+		static void free(const void* data);
+
+		static bool is_set(const void* mem, char chr, size_t length);
+
+		static bool is_bad_read_ptr(const void* ptr);
+		static bool is_bad_code_ptr(const void* ptr);
+		static bool is_rdata_ptr(void* ptr);
+
+		static allocator* get_allocator();
+
+	private:
+		static allocator mem_allocator_;
+	};
+}

src/utils/nt.cpp

@@ -0,0 +1,254 @@
+#include "nt.hpp"
+
+namespace utils::nt
+{
+	library library::load(const std::string& name)
+	{
+		return library(LoadLibraryA(name.data()));
+	}
+
+	library library::load(const std::filesystem::path& path)
+	{
+		return library::load(path.generic_string());
+	}
+
+	library library::get_by_address(void* address)
+	{
+		HMODULE handle = nullptr;
+		GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS, static_cast<LPCSTR>(address), &handle);
+		return library(handle);
+	}
+
+	library::library()
+	{
+		this->module_ = GetModuleHandleA(nullptr);
+	}
+
+	library::library(const std::string& name)
+	{
+		this->module_ = GetModuleHandleA(name.data());
+	}
+
+	library::library(const HMODULE handle)
+	{
+		this->module_ = handle;
+	}
+
+	bool library::operator==(const library& obj) const
+	{
+		return this->module_ == obj.module_;
+	}
+
+	library::operator bool() const
+	{
+		return this->is_valid();
+	}
+
+	library::operator HMODULE() const
+	{
+		return this->get_handle();
+	}
+
+	PIMAGE_NT_HEADERS library::get_nt_headers() const
+	{
+		if (!this->is_valid()) return nullptr;
+		return reinterpret_cast<PIMAGE_NT_HEADERS>(this->get_ptr() + this->get_dos_header()->e_lfanew);
+	}
+
+	PIMAGE_DOS_HEADER library::get_dos_header() const
+	{
+		return reinterpret_cast<PIMAGE_DOS_HEADER>(this->get_ptr());
+	}
+
+	PIMAGE_OPTIONAL_HEADER library::get_optional_header() const
+	{
+		if (!this->is_valid()) return nullptr;
+		return &this->get_nt_headers()->OptionalHeader;
+	}
+
+	std::vector<PIMAGE_SECTION_HEADER> library::get_section_headers() const
+	{
+		std::vector<PIMAGE_SECTION_HEADER> headers;
+
+		auto nt_headers = this->get_nt_headers();
+		auto section = IMAGE_FIRST_SECTION(nt_headers);
+
+		for (uint16_t i = 0; i < nt_headers->FileHeader.NumberOfSections; ++i, ++section)
+		{
+			if (section) headers.push_back(section);
+			else OutputDebugStringA("There was an invalid section :O");
+		}
+
+		return headers;
+	}
+
+	std::uint8_t* library::get_ptr() const
+	{
+		return reinterpret_cast<std::uint8_t*>(this->module_);
+	}
+
+	void library::unprotect() const
+	{
+		if (!this->is_valid()) return;
+
+		DWORD protection;
+		VirtualProtect(this->get_ptr(), this->get_optional_header()->SizeOfImage, PAGE_EXECUTE_READWRITE,
+		               &protection);
+	}
+
+	size_t library::get_relative_entry_point() const
+	{
+		if (!this->is_valid()) return 0;
+		return this->get_nt_headers()->OptionalHeader.AddressOfEntryPoint;
+	}
+
+	void* library::get_entry_point() const
+	{
+		if (!this->is_valid()) return nullptr;
+		return this->get_ptr() + this->get_relative_entry_point();
+	}
+
+	bool library::is_valid() const
+	{
+		return this->module_ != nullptr && this->get_dos_header()->e_magic == IMAGE_DOS_SIGNATURE;
+	}
+
+	std::string library::get_name() const
+	{
+		if (!this->is_valid()) return "";
+
+		auto path = this->get_path();
+		const auto pos = path.find_last_of("/\\");
+		if (pos == std::string::npos) return path;
+
+		return path.substr(pos + 1);
+	}
+
+	std::string library::get_path() const
+	{
+		if (!this->is_valid()) return "";
+
+		char name[MAX_PATH] = {0};
+		GetModuleFileNameA(this->module_, name, sizeof name);
+
+		return name;
+	}
+
+	std::string library::get_folder() const
+	{
+		if (!this->is_valid()) return "";
+
+		const auto path = std::filesystem::path(this->get_path());
+		return path.parent_path().generic_string();
+	}
+
+	void library::free()
+	{
+		if (this->is_valid())
+		{
+			FreeLibrary(this->module_);
+			this->module_ = nullptr;
+		}
+	}
+
+	HMODULE library::get_handle() const
+	{
+		return this->module_;
+	}
+
+	void** library::get_iat_entry(const std::string& module_name, const std::string& proc_name) const
+	{
+		if (!this->is_valid()) return nullptr;
+
+		const library other_module(module_name);
+		if (!other_module.is_valid()) return nullptr;
+
+		auto* const target_function = other_module.get_proc<void*>(proc_name);
+		if (!target_function) return nullptr;
+
+		auto* header = this->get_optional_header();
+		if (!header) return nullptr;
+
+		auto* import_descriptor = reinterpret_cast<PIMAGE_IMPORT_DESCRIPTOR>(this->get_ptr() + header->DataDirectory
+			[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress);
+
+		while (import_descriptor->Name)
+		{
+			if (!_stricmp(reinterpret_cast<char*>(this->get_ptr() + import_descriptor->Name), module_name.data()))
+			{
+				auto* original_thunk_data = reinterpret_cast<PIMAGE_THUNK_DATA>(import_descriptor->
+					OriginalFirstThunk + this->get_ptr());
+				auto* thunk_data = reinterpret_cast<PIMAGE_THUNK_DATA>(import_descriptor->FirstThunk + this->
+					get_ptr());
+
+				while (original_thunk_data->u1.AddressOfData)
+				{
+					const size_t ordinal_number = original_thunk_data->u1.AddressOfData & 0xFFFFFFF;
+
+					if (ordinal_number > 0xFFFF) continue;
+
+					if (GetProcAddress(other_module.module_, reinterpret_cast<char*>(ordinal_number)) ==
+						target_function)
+					{
+						return reinterpret_cast<void**>(&thunk_data->u1.Function);
+					}
+
+					++original_thunk_data;
+					++thunk_data;
+				}
+
+				//break;
+			}
+
+			++import_descriptor;
+		}
+
+		return nullptr;
+	}
+
+	void raise_hard_exception()
+	{
+		int data = false;
+		const library ntdll("ntdll.dll");
+		ntdll.invoke_pascal<void>("RtlAdjustPrivilege", 19, true, false, &data);
+		ntdll.invoke_pascal<void>("NtRaiseHardError", 0xC000007B, 0, nullptr, nullptr, 6, &data);
+	}
+
+	std::string load_resource(const int id)
+	{
+		auto* const res = FindResource(library(), MAKEINTRESOURCE(id), RT_RCDATA);
+		if (!res) return {};
+
+		auto* const handle = LoadResource(nullptr, res);
+		if (!handle) return {};
+
+		return std::string(LPSTR(LockResource(handle)), SizeofResource(nullptr, res));
+	}
+
+	void relaunch_self()
+	{
+		const utils::nt::library self;
+
+		STARTUPINFOA startup_info;
+		PROCESS_INFORMATION process_info;
+
+		ZeroMemory(&startup_info, sizeof(startup_info));
+		ZeroMemory(&process_info, sizeof(process_info));
+		startup_info.cb = sizeof(startup_info);
+
+		char current_dir[MAX_PATH];
+		GetCurrentDirectoryA(sizeof(current_dir), current_dir);
+		auto* const command_line = GetCommandLineA();
+
+		CreateProcessA(self.get_path().data(), command_line, nullptr, nullptr, false, NULL, nullptr, current_dir,
+		               &startup_info, &process_info);
+
+		if (process_info.hThread && process_info.hThread != INVALID_HANDLE_VALUE) CloseHandle(process_info.hThread);
+		if (process_info.hProcess && process_info.hProcess != INVALID_HANDLE_VALUE) CloseHandle(process_info.hProcess);
+	}
+
+	void terminate(const uint32_t code)
+	{
+		TerminateProcess(GetCurrentProcess(), code);
+	}
+}

src/utils/nt.hpp

@@ -0,0 +1,110 @@
+#pragma once
+
+#define WIN32_LEAN_AND_MEAN
+#include <Windows.h>
+
+// min and max is required by gdi, therefore NOMINMAX won't work
+#ifdef max
+#undef max
+#endif
+
+#ifdef min
+#undef min
+#endif
+
+#include <string>
+#include <functional>
+#include <filesystem>
+
+namespace utils::nt
+{
+	class library final
+	{
+	public:
+		static library load(const std::string& name);
+		static library load(const std::filesystem::path& path);
+		static library get_by_address(void* address);
+
+		library();
+		explicit library(const std::string& name);
+		explicit library(HMODULE handle);
+
+		library(const library& a) : module_(a.module_)
+		{
+		}
+
+		bool operator!=(const library& obj) const { return !(*this == obj); };
+		bool operator==(const library& obj) const;
+
+		operator bool() const;
+		operator HMODULE() const;
+
+		void unprotect() const;
+		void* get_entry_point() const;
+		size_t get_relative_entry_point() const;
+
+		bool is_valid() const;
+		std::string get_name() const;
+		std::string get_path() const;
+		std::string get_folder() const;
+		std::uint8_t* get_ptr() const;
+		void free();
+
+		HMODULE get_handle() const;
+
+		template <typename T>
+		T get_proc(const std::string& process) const
+		{
+			if (!this->is_valid()) T{};
+			return reinterpret_cast<T>(GetProcAddress(this->module_, process.data()));
+		}
+
+		template <typename T>
+		std::function<T> get(const std::string& process) const
+		{
+			if (!this->is_valid()) return std::function<T>();
+			return static_cast<T*>(this->get_proc<void*>(process));
+		}
+
+		template <typename T, typename... Args>
+		T invoke(const std::string& process, Args ... args) const
+		{
+			auto method = this->get<T(__cdecl)(Args ...)>(process);
+			if (method) return method(args...);
+			return T();
+		}
+
+		template <typename T, typename... Args>
+		T invoke_pascal(const std::string& process, Args ... args) const
+		{
+			auto method = this->get<T(__stdcall)(Args ...)>(process);
+			if (method) return method(args...);
+			return T();
+		}
+
+		template <typename T, typename... Args>
+		T invoke_this(const std::string& process, void* this_ptr, Args ... args) const
+		{
+			auto method = this->get<T(__thiscall)(void*, Args ...)>(this_ptr, process);
+			if (method) return method(args...);
+			return T();
+		}
+
+		std::vector<PIMAGE_SECTION_HEADER> get_section_headers() const;
+
+		PIMAGE_NT_HEADERS get_nt_headers() const;
+		PIMAGE_DOS_HEADER get_dos_header() const;
+		PIMAGE_OPTIONAL_HEADER get_optional_header() const;
+
+		void** get_iat_entry(const std::string& module_name, const std::string& proc_name) const;
+
+	private:
+		HMODULE module_;
+	};
+
+	__declspec(noreturn) void raise_hard_exception();
+	std::string load_resource(int id);
+
+	void relaunch_self();
+	__declspec(noreturn) void terminate(uint32_t code = 0);
+}

src/utils/signature.cpp

@@ -0,0 +1,212 @@
+#include "signature.hpp"
+#include <thread>
+#include <mutex>
+
+#include <intrin.h>
+
+namespace utils::hook
+{
+	void signature::load_pattern(const std::string& pattern)
+	{
+		this->mask_.clear();
+		this->pattern_.clear();
+
+		uint8_t nibble = 0;
+		auto has_nibble = false;
+
+		for (auto val : pattern)
+		{
+			if (val == ' ') continue;
+			if (val == '?')
+			{
+				this->mask_.push_back(val);
+				this->pattern_.push_back(0);
+			}
+			else
+			{
+				if ((val < '0' || val > '9') && (val < 'A' || val > 'F') && (val < 'a' || val > 'f'))
+				{
+					throw std::runtime_error("Invalid pattern");
+				}
+
+				char str[] = {val, 0};
+				const auto current_nibble = static_cast<uint8_t>(strtol(str, nullptr, 16));
+
+				if (!has_nibble)
+				{
+					has_nibble = true;
+					nibble = current_nibble;
+				}
+				else
+				{
+					has_nibble = false;
+					const uint8_t byte = current_nibble | (nibble << 4);
+
+					this->mask_.push_back('x');
+					this->pattern_.push_back(byte);
+				}
+			}
+		}
+
+		while (!this->mask_.empty() && this->mask_.back() == '?')
+		{
+			this->mask_.pop_back();
+			this->pattern_.pop_back();
+		}
+
+		if (this->has_sse_support())
+		{
+			while (this->pattern_.size() < 16)
+			{
+				this->pattern_.push_back(0);
+			}
+		}
+
+		if (has_nibble)
+		{
+			throw std::runtime_error("Invalid pattern");
+		}
+	}
+
+	std::vector<size_t> signature::process_range(uint8_t* start, const size_t length) const
+	{
+		if (this->has_sse_support()) return this->process_range_vectorized(start, length);
+		return this->process_range_linear(start, length);
+	}
+
+	std::vector<size_t> signature::process_range_linear(uint8_t* start, const size_t length) const
+	{
+		std::vector<size_t> result;
+
+		for (size_t i = 0; i < length; ++i)
+		{
+			const auto address = start + i;
+
+			size_t j = 0;
+			for (; j < this->mask_.size(); ++j)
+			{
+				if (this->mask_[j] != '?' && this->pattern_[j] != address[j])
+				{
+					break;
+				}
+			}
+
+			if (j == this->mask_.size())
+			{
+				result.push_back(size_t(address));
+			}
+		}
+
+		return result;
+	}
+
+	std::vector<size_t> signature::process_range_vectorized(uint8_t* start, const size_t length) const
+	{
+		std::vector<size_t> result;
+		__declspec(align(16)) char desired_mask[16] = {0};
+
+		for (size_t i = 0; i < this->mask_.size(); i++)
+		{
+			desired_mask[i / 8] |= (this->mask_[i] == '?' ? 0 : 1) << i % 8;
+		}
+
+		const auto mask = _mm_load_si128(reinterpret_cast<const __m128i*>(desired_mask));
+		const auto comparand = _mm_loadu_si128(reinterpret_cast<const __m128i*>(this->pattern_.data()));
+
+		for (size_t i = 0; i < length; ++i)
+		{
+			const auto address = start + i;
+			const auto value = _mm_loadu_si128(reinterpret_cast<const __m128i*>(address));
+			const auto comparison = _mm_cmpestrm(value, 16, comparand, static_cast<int>(this->mask_.size()),
+			                                     _SIDD_CMP_EQUAL_EACH);
+
+			const auto matches = _mm_and_si128(mask, comparison);
+			const auto equivalence = _mm_xor_si128(mask, matches);
+
+			if (_mm_test_all_zeros(equivalence, equivalence))
+			{
+				result.push_back(size_t(address));
+			}
+		}
+
+		return result;
+	}
+
+	signature::signature_result signature::process() const
+	{
+		const auto range = this->length_ - this->mask_.size();
+		const auto cores = std::max(1u, std::thread::hardware_concurrency());
+
+		if (range <= cores * 10ull) return this->process_serial();
+		return this->process_parallel();
+	}
+
+	signature::signature_result signature::process_serial() const
+	{
+		const auto sub = this->has_sse_support() ? 16 : this->mask_.size();
+		return {this->process_range(this->start_, this->length_ - sub)};
+	}
+
+	signature::signature_result signature::process_parallel() const
+	{
+		const auto sub = this->has_sse_support() ? 16 : this->mask_.size();
+		const auto range = this->length_ - sub;
+		const auto cores = std::max(1u, std::thread::hardware_concurrency() / 2);
+		// Only use half of the available cores
+		const auto grid = range / cores;
+
+		std::mutex mutex;
+		std::vector<size_t> result;
+		std::vector<std::thread> threads;
+
+		for (auto i = 0u; i < cores; ++i)
+		{
+			const auto start = this->start_ + (grid * i);
+			const auto length = (i + 1 == cores) ? (this->start_ + this->length_ - sub) - start : grid;
+			threads.emplace_back([&, start, length]()
+			{
+				auto local_result = this->process_range(start, length);
+				if (local_result.empty()) return;
+
+				std::lock_guard _(mutex);
+				for (const auto& address : local_result)
+				{
+					result.push_back(address);
+				}
+			});
+		}
+
+		for (auto& t : threads)
+		{
+			if (t.joinable())
+			{
+				t.join();
+			}
+		}
+
+		std::sort(result.begin(), result.end());
+		return {std::move(result)};
+	}
+
+	bool signature::has_sse_support() const
+	{
+		if (this->mask_.size() <= 16)
+		{
+			int cpu_id[4];
+			__cpuid(cpu_id, 0);
+
+			if (cpu_id[0] >= 1)
+			{
+				__cpuidex(cpu_id, 1, 0);
+				return (cpu_id[2] & (1 << 20)) != 0;
+			}
+		}
+
+		return false;
+	}
+}
+
+utils::hook::signature::signature_result operator"" _sig(const char* str, const size_t len)
+{
+	return utils::hook::signature(std::string(str, len)).process();
+}

src/utils/signature.hpp

@@ -0,0 +1,73 @@
+#pragma once
+#include "nt.hpp"
+#include <cstdint>
+
+namespace utils::hook
+{
+	class signature final
+	{
+	public:
+		class signature_result
+		{
+		public:
+			signature_result(std::vector<size_t>&& matches) : matches_(std::move(matches))
+			{
+			}
+
+			[[nodiscard]] uint8_t* get(const size_t index) const
+			{
+				if (index >= this->count())
+				{
+					throw std::runtime_error("Invalid index");
+				}
+
+				return reinterpret_cast<uint8_t*>(this->matches_[index]);
+			}
+
+			[[nodiscard]] size_t count() const
+			{
+				return this->matches_.size();
+			}
+
+		private:
+			std::vector<size_t> matches_;
+		};
+
+		explicit signature(const std::string& pattern, const nt::library library = {})
+			: signature(pattern, library.get_ptr(), library.get_optional_header()->SizeOfImage)
+		{
+		}
+
+		signature(const std::string& pattern, void* start, void* end)
+			: signature(pattern, start, size_t(end) - size_t(start))
+		{
+		}
+
+		signature(const std::string& pattern, void* start, const size_t length)
+			: start_(static_cast<uint8_t*>(start)), length_(length)
+		{
+			this->load_pattern(pattern);
+		}
+
+		signature_result process() const;
+
+	private:
+		std::string mask_;
+		std::basic_string<uint8_t> pattern_;
+
+		uint8_t* start_;
+		size_t length_;
+
+		void load_pattern(const std::string& pattern);
+
+		signature_result process_parallel() const;
+		signature_result process_serial() const;
+		std::vector<size_t> process_range(uint8_t* start, size_t length) const;
+		std::vector<size_t> process_range_linear(uint8_t* start, size_t length) const;
+		std::vector<size_t> process_range_vectorized(uint8_t* start, size_t length) const;
+
+		bool has_sse_support() const;
+	};
+}
+
+utils::hook::signature::signature_result operator"" _sig(const char* str, size_t len);

src/utils/string.cpp

@@ -0,0 +1,184 @@
+#include "string.hpp"
+#include <sstream>
+#include <cstdarg>
+#include <algorithm>
+
+#include "nt.hpp"
+
+namespace utils::string
+{
+	const char* va(const char* fmt, ...)
+	{
+		static thread_local va_provider<8, 256> provider;
+
+		va_list ap;
+		va_start(ap, fmt);
+
+		const char* result = provider.get(fmt, ap);
+
+		va_end(ap);
+		return result;
+	}
+
+	std::vector<std::string> split(const std::string& s, const char delim)
+	{
+		std::stringstream ss(s);
+		std::string item;
+		std::vector<std::string> elems;
+
+		while (std::getline(ss, item, delim))
+		{
+			elems.push_back(item); // elems.push_back(std::move(item)); // if C++11 (based on comment from @mchiasson)
+		}
+
+		return elems;
+	}
+
+	std::string to_lower(std::string text)
+	{
+		std::transform(text.begin(), text.end(), text.begin(), [](const char input)
+		{
+			return static_cast<char>(tolower(input));
+		});
+
+		return text;
+	}
+
+	std::string to_upper(std::string text)
+	{
+		std::transform(text.begin(), text.end(), text.begin(), [](const char input)
+		{
+			return static_cast<char>(toupper(input));
+		});
+
+		return text;
+	}
+
+	bool starts_with(const std::string& text, const std::string& substring)
+	{
+		return text.find(substring) == 0;
+	}
+
+	bool ends_with(const std::string& text, const std::string& substring)
+	{
+		if (substring.size() > text.size()) return false;
+		return std::equal(substring.rbegin(), substring.rend(), text.rbegin());
+	}
+
+	std::string dump_hex(const std::string& data, const std::string& separator)
+	{
+		std::string result;
+
+		for (unsigned int i = 0; i < data.size(); ++i)
+		{
+			if (i > 0)
+			{
+				result.append(separator);
+			}
+
+			result.append(va("%02X", data[i] & 0xFF));
+		}
+
+		return result;
+	}
+
+	std::string get_clipboard_data()
+	{
+		if (OpenClipboard(nullptr))
+		{
+			std::string data;
+
+			auto* const clipboard_data = GetClipboardData(1u);
+			if (clipboard_data)
+			{
+				auto* const cliptext = static_cast<char*>(GlobalLock(clipboard_data));
+				if (cliptext)
+				{
+					data.append(cliptext);
+					GlobalUnlock(clipboard_data);
+				}
+			}
+			CloseClipboard();
+
+			return data;
+		}
+		return {};
+	}
+
+	void strip(const char* in, char* out, int max)
+	{
+		if (!in || !out) return;
+
+		max--;
+		auto current = 0;
+		while (*in != 0 && current < max)
+		{
+			const auto color_index = (*(in + 1) - 48) >= 0xC ? 7 : (*(in + 1) - 48);
+
+			if (*in == '^' && (color_index != 7 || *(in + 1) == '7'))
+			{
+				++in;
+			}
+			else
+			{
+				*out = *in;
+				++out;
+				++current;
+			}
+
+			++in;
+		}
+		*out = '\0';
+	}
+
+#pragma warning(push)
+#pragma warning(disable: 4100)
+	std::string convert(const std::wstring& wstr)
+	{
+		std::string result;
+		result.reserve(wstr.size());
+
+		for (const auto& chr : wstr)
+		{
+			result.push_back(static_cast<char>(chr));
+		}
+
+		return result;
+	}
+
+	std::wstring convert(const std::string& str)
+	{
+		std::wstring result;
+		result.reserve(str.size());
+
+		for (const auto& chr : str)
+		{
+			result.push_back(static_cast<wchar_t>(chr));
+		}
+
+		return result;
+	}
+#pragma warning(pop)
+
+	std::string replace(std::string str, const std::string& from, const std::string& to)
+	{
+		if (from.empty())
+		{
+			return str;
+		}
+
+		size_t start_pos = 0;
+		while ((start_pos = str.find(from, start_pos)) != std::string::npos)
+		{
+			str.replace(start_pos, from.length(), to);
+			start_pos += to.length();
+		}
+
+		return str;
+	}
+
+	bool contains(const std::string& str1, const std::string& str2)
+	{
+		return str1.find(str2) != std::string::npos;
+	}
+}

src/utils/string.hpp

@@ -0,0 +1,102 @@
+#pragma once
+#include "memory.hpp"
+#include <cstdint>
+
+#ifndef ARRAYSIZE
+template <class Type, size_t n>
+size_t ARRAYSIZE(Type (&)[n]) { return n; }
+#endif
+
+namespace utils::string
+{
+	template <size_t Buffers, size_t MinBufferSize>
+	class va_provider final
+	{
+	public:
+		static_assert(Buffers != 0 && MinBufferSize != 0, "Buffers and MinBufferSize mustn't be 0");
+
+		va_provider() : current_buffer_(0)
+		{
+		}
+
+		char* get(const char* format, const va_list ap)
+		{
+			++this->current_buffer_ %= ARRAYSIZE(this->string_pool_);
+			auto entry = &this->string_pool_[this->current_buffer_];
+
+			if (!entry->size || !entry->buffer)
+			{
+				throw std::runtime_error("String pool not initialized");
+			}
+
+			while (true)
+			{
+				const int res = vsnprintf_s(entry->buffer, entry->size, _TRUNCATE, format, ap);
+				if (res > 0) break; // Success
+				if (res == 0) return nullptr; // Error
+
+				entry->double_size();
+			}
+
+			return entry->buffer;
+		}
+
+	private:
+		class entry final
+		{
+		public:
+			explicit entry(const size_t _size = MinBufferSize) : size(_size), buffer(nullptr)
+			{
+				if (this->size < MinBufferSize) this->size = MinBufferSize;
+				this->allocate();
+			}
+
+			~entry()
+			{
+				if (this->buffer) memory::get_allocator()->free(this->buffer);
+				this->size = 0;
+				this->buffer = nullptr;
+			}
+
+			void allocate()
+			{
+				if (this->buffer) memory::get_allocator()->free(this->buffer);
+				this->buffer = memory::get_allocator()->allocate_array<char>(this->size + 1);
+			}
+
+			void double_size()
+			{
+				this->size *= 2;
+				this->allocate();
+			}
+
+			size_t size;
+			char* buffer;
+		};
+
+		size_t current_buffer_;
+		entry string_pool_[Buffers];
+	};
+
+	const char* va(const char* fmt, ...);
+
+	std::vector<std::string> split(const std::string& s, char delim);
+
+	std::string to_lower(std::string text);
+	std::string to_upper(std::string text);
+	bool starts_with(const std::string& text, const std::string& substring);
+	bool ends_with(const std::string& text, const std::string& substring);
+
+	std::string dump_hex(const std::string& data, const std::string& separator = " ");
+
+	std::string get_clipboard_data();
+
+	void strip(const char* in, char* out, int max);
+
+	std::string convert(const std::wstring& wstr);
+	std::wstring convert(const std::string& str);
+
+	std::string replace(std::string str, const std::string& from, const std::string& to);
+
+	bool contains(const std::string& str1, const std::string& str2);
+}