arxan class [skip ci]

src/client/component/arxan.cpp

@@ -0,0 +1,164 @@
+#include <std_include.hpp>
+#include "loader/component_loader.hpp"
+#include "scheduler.hpp"
+#include "game/game.hpp"
+
+#include <utils/hook.hpp>
+
+namespace arxan
+{
+	namespace
+	{
+		utils::hook::detour nt_close_hook;
+		utils::hook::detour nt_query_information_process_hook;
+
+		NTSTATUS WINAPI nt_query_information_process_stub(const HANDLE handle, const PROCESSINFOCLASS info_class,
+			const PVOID info,
+			const ULONG info_length, const PULONG ret_length)
+		{
+			auto* orig = static_cast<decltype(NtQueryInformationProcess)*>(nt_query_information_process_hook.
+				get_original());
+			const auto status = orig(handle, info_class, info, info_length, ret_length);
+
+			if (NT_SUCCESS(status))
+			{
+				if (info_class == ProcessBasicInformation)
+				{
+					static DWORD explorer_pid = 0;
+					if (!explorer_pid)
+					{
+						auto* const shell_window = GetShellWindow();
+						GetWindowThreadProcessId(shell_window, &explorer_pid);
+					}
+
+					static_cast<PPROCESS_BASIC_INFORMATION>(info)->Reserved3 = PVOID(DWORD64(explorer_pid));
+				}
+				else if (info_class == 30) // ProcessDebugObjectHandle
+				{
+					*static_cast<HANDLE*>(info) = nullptr;
+
+					return 0xC0000353;
+				}
+				else if (info_class == 7) // ProcessDebugPort
+				{
+					*static_cast<HANDLE*>(info) = nullptr;
+				}
+				else if (info_class == 31)
+				{
+					*static_cast<ULONG*>(info) = 1;
+				}
+			}
+
+			return status;
+		}
+
+		NTSTATUS NTAPI nt_close_stub(const HANDLE handle)
+		{
+			char info[16];
+			if (NtQueryObject(handle, OBJECT_INFORMATION_CLASS(4), &info, 2, nullptr) >= 0 && size_t(handle) != 0x12345)
+			{
+				auto* orig = static_cast<decltype(NtClose)*>(nt_close_hook.get_original());
+				return orig(handle);
+			}
+
+			return STATUS_INVALID_HANDLE;
+		}
+
+		LONG WINAPI exception_filter(const LPEXCEPTION_POINTERS info)
+		{
+			if (info->ExceptionRecord->ExceptionCode == STATUS_INVALID_HANDLE)
+			{
+				return EXCEPTION_CONTINUE_EXECUTION;
+			}
+
+			return EXCEPTION_CONTINUE_SEARCH;
+		}
+
+		void hide_being_debugged()
+		{
+			auto* const peb = PPEB(__readgsqword(0x60));
+			peb->BeingDebugged = false;
+			*reinterpret_cast<PDWORD>(LPSTR(peb) + 0xBC) &= ~0x70;
+		}
+
+		void remove_hardware_breakpoints()
+		{
+			CONTEXT context;
+			ZeroMemory(&context, sizeof(context));
+			context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
+
+			auto* const thread = GetCurrentThread();
+			GetThreadContext(thread, &context);
+
+			context.Dr0 = 0;
+			context.Dr1 = 0;
+			context.Dr2 = 0;
+			context.Dr3 = 0;
+			context.Dr6 = 0;
+			context.Dr7 = 0;
+
+			SetThreadContext(thread, &context);
+		}
+
+		BOOL WINAPI set_thread_context_stub(const HANDLE thread, CONTEXT* context)
+		{
+			if (!game::environment::is_sp()
+				&& game::dwGetLogOnStatus() == game::DW_LIVE_CONNECTED
+				&& context->ContextFlags == CONTEXT_DEBUG_REGISTERS)
+			{
+				return TRUE;
+			}
+
+			return SetThreadContext(thread, context);
+		}
+	}
+
+	int just_return()
+	{
+		return 1;
+	}
+
+	class component final : public component_interface
+	{
+	public:
+		void* load_import(const std::string& library, const std::string& function) override
+		{
+			if (function == "SetThreadContext")
+			{
+				//return set_thread_context_stub;
+			}
+
+			if (function == "LoadStringA" || function == "LoadStringW")
+			{
+				return just_return;
+			}
+
+			return nullptr;
+		}
+
+		void post_load() override
+		{
+			hide_being_debugged();
+			scheduler::loop(hide_being_debugged, scheduler::pipeline::async);
+
+			const utils::nt::library ntdll("ntdll.dll");
+			nt_close_hook.create(ntdll.get_proc<void*>("NtClose"), nt_close_stub);
+			nt_query_information_process_hook.create(ntdll.get_proc<void*>("NtQueryInformationProcess"),
+				nt_query_information_process_stub);
+
+			AddVectoredExceptionHandler(1, exception_filter);
+		}
+
+		void post_unpack() override
+		{
+			// cba to implement sp, not sure if it's even needed
+			if (game::environment::is_sp()) return;
+
+			// some of arxan crashes
+			utils::hook::nop(0x14CDEFCAA, 6);
+			utils::hook::call(0x1405BCAD1, &just_return);
+		}
+	};
+}
+
+REGISTER_COMPONENT(arxan::component)

src/client/main.cpp

@@ -51,7 +51,7 @@ launcher::mode detect_mode_from_arguments()
 }
 
 
-FARPROC load_binary(const launcher::mode mode)
+FARPROC load_binary(const launcher::mode mode, uint64_t* base_address)
 {
 	loader loader;
 	utils::nt::library self;
@@ -97,11 +97,11 @@ FARPROC load_binary(const launcher::mode mode)
 	if (!utils::io::read_file(binary, &data))
 	{
 		throw std::runtime_error(utils::string::va(
-			"Failed to read game binary (%s)!\nPlease copy the h1-mod.exe into your Call of Duty: Modern Warfare Remastered installation folder and run it from there.",
+			"Failed to read game binary (%s)!\nPlease copy the h1x.exe into your Call of Duty: Modern Warfare Remastered installation folder and run it from there.",
 			binary.data()));
 	}
 
-	return loader.load_library(binary);
+	return loader.load_library(binary, base_address);
 }
 
 void remove_crash_file()
@@ -111,7 +111,7 @@ void remove_crash_file()
 
 void enable_dpi_awareness()
 {
-	const utils::nt::library user32{"user32.dll"};
+	const utils::nt::library user32{ "user32.dll" };
 	const auto set_dpi = user32
 		? user32.get_proc<BOOL(WINAPI*)(DPI_AWARENESS_CONTEXT)>("SetProcessDpiAwarenessContext")
 		: nullptr;
@@ -149,14 +149,15 @@ void limit_parallel_dll_loading()
 
 int main()
 {
+	ShowWindow(GetConsoleWindow(), SW_HIDE);
+
 	FARPROC entry_point;
 	enable_dpi_awareness();
 
-	// This requires admin privilege, but I suppose many
-	// people will start with admin rights if it crashes.
 	limit_parallel_dll_loading();
 
 	srand(uint32_t(time(nullptr)));
+	remove_crash_file();
 
 	{
 		auto premature_shutdown = true;
@@ -170,27 +171,38 @@ int main()
 
 		try
 		{
-			remove_crash_file();
+			if (!component_loader::post_start())
-
+			{
-			if (!component_loader::post_start()) return 0;
+				return 0;
+			}
 
 			auto mode = detect_mode_from_arguments();
 			if (mode == launcher::mode::none)
 			{
 				const launcher launcher;
 				mode = launcher.run();
-				if (mode == launcher::mode::none) return 0;
+				if (mode == launcher::mode::none)
+				{
+					return 0;
+				}
 			}
 
 			game::environment::set_mode(mode);
 
-			entry_point = load_binary(mode);
+			uint64_t base_address{};
+			entry_point = load_binary(mode, &base_address);
 			if (!entry_point)
 			{
 				throw std::runtime_error("Unable to load binary into memory");
 			}
 
-			if (!component_loader::post_load()) return 0;
+			game::base_address = base_address;
+			//verify_version();
+
+			if (!component_loader::post_load())
+			{
+				return 0;
+			}
 
 			premature_shutdown = false;
 		}