From 09e37e6a93675c97ffed507a25579e7860374224 Mon Sep 17 00:00:00 2001 From: Emmanuel AYME Date: Tue, 18 Nov 2025 17:56:11 +0100 Subject: [PATCH] Add Little Nightmares --- LittleNightmares/dllmain.cpp | 437 +++++++++++++++++++++++++++++++++++ 1 file changed, 437 insertions(+) create mode 100644 LittleNightmares/dllmain.cpp diff --git a/LittleNightmares/dllmain.cpp b/LittleNightmares/dllmain.cpp new file mode 100644 index 0000000..9a0250f --- /dev/null +++ b/LittleNightmares/dllmain.cpp @@ -0,0 +1,437 @@ +#include "CommonHeaders.h" +#include "GameFixes.h" +#include "GameInformations.h" +#include "ObfuscateString.h" +#include "Memory.hpp" +#include "Maths.hpp" +#include "UEngine.hpp" +#include "SDK/Basic.hpp" +#include "SDK/Engine_classes.hpp" + +using namespace SDK; + +// Constants +const std::string PLUGIN_NAME = "LittleNightmares"; +const std::string PLUGIN_LOG = PLUGIN_NAME + ".log"; +const float baseAspect = 1.777778; + +// Logger +std::shared_ptr logger; + +// Screen informations +static int screenWidth = GetSystemMetrics(SM_CXSCREEN); +static int screenHeight = GetSystemMetrics(SM_CYSCREEN); +static float aspectRatio = (float)screenWidth / screenHeight; + +// Plugin states +static bool AOBScanDone = false; +static bool g_fix_enabled = false; +static bool g_fov_fix_enabled = false; +static bool g_FPS_fix_enabled = false; +static bool g_ultrawide_fix_enabled = false; +static bool g_DOF_fix_enabled = false; +static bool g_CA_fix_enabled = false; +static bool g_Vignetting_fix_enabled = false; +static bool g_Fog_fix_enabled = false; +static bool g_Console = false; +static int g_AdditionalFOVValue = 0; + +// Shared values +static float g_FOV_In = 70.f; +static float g_CompensatedFOV = 70.f; +static float g_FOV_Out = 70.f; +static bool g_Console_Enabled = false; + +// AOB Unreal Engine offsets addresses +static uint8_t* GObjectsaddress = nullptr; +static uint8_t* AppendStringaddress = nullptr; +static uint8_t* ProcessEventaddress = nullptr; + +// AOB Scan pointers +static uint8_t* FOVaddress = nullptr; +static uint8_t* DOFaddress = nullptr; +static uint8_t* CAaddress = nullptr; +static uint8_t* Vignettingaddress = nullptr; +static uint8_t* Fogaddress = nullptr; +static uint8_t* UltraWideaddress = nullptr; +static uint8_t* FPSaddress = nullptr; + +// Hooking +static SafetyHookMid FOVHook{}; +static SafetyHookMid FPSHook{}; +static SafetyHookMid VignettingHook{}; +static SafetyHookMid FogHook{}; + +// Prototypes +static void FOVFixEnabled(); +static void FPSFixEnabled(); +static void UltraWideFixEnabled(); +static void DOFFixEnabled(); +static void CAFixEnabled(); +static void VignettingFixEnabled(); +static void FogFixEnabled(); +static void EnableConsole(); + +extern "C" __declspec(dllexport) void SetFixEnabled(bool enabled, bool init) +{ + g_fix_enabled = enabled; + if (g_fix_enabled && !AOBScanDone) { + logger->info("--------------- AOB scan started ---------------"); + if (!FOVaddress) { + constexpr auto FOVStringObfuscated = make_obfuscated<0x4A>("74 ?? E8 ?? ?? ?? ?? 0F ?? ?? 48 8B ?? ?? ?? ?? ?? ?? 48 ?? ?? E8 ?? ?? ?? ?? 0F 28 ?? ?? ?? ?? ?? ?? 48 81 ?? ?? ?? ?? ?? C3"); + FOVaddress = Memory::AOBScan("", FOVStringObfuscated.decrypt(), PAGE_EXECUTE_READ, logger); + + if (!FOVaddress) + logger->warn("FOV signature not found. Maybe your game has been updated and is no more compatible with this plugin."); + else + logger->info("FOV found at address: 0x{:X}.", reinterpret_cast(FOVaddress)); + } + + if (!UltraWideaddress) { + constexpr auto AspectRatioAxisConstraintStringObfuscated = make_obfuscated<0x4A>("C7 80 ?? ?? ?? ?? 3B 8E E3 3F 48 8B"); + UltraWideaddress = Memory::AOBScan("", AspectRatioAxisConstraintStringObfuscated.decrypt(), PAGE_EXECUTE_READ); + + if (!UltraWideaddress) + logger->warn("Aspect ratio signature not found. Maybe your game has been updated and is no more compatible with this plugin."); + else + logger->info("Aspect ratio found at address: 0x{:X}.", reinterpret_cast(UltraWideaddress)); + } + + if (!DOFaddress) { + constexpr auto DOFStringObfuscated = make_obfuscated<0x4A>("8B ?? ?? E8 ?? ?? ?? ?? 8B ?? E8 ?? ?? ?? ?? 84 ?? 74 ?? 48"); + DOFaddress = Memory::AOBScan("", DOFStringObfuscated.decrypt(), PAGE_EXECUTE_READ); + + if (!DOFaddress) + logger->warn("DOF signature not found. Maybe your game has been updated and is no more compatible with this plugin."); + else + logger->info("DOF signature found at address: 0x{:X}.", reinterpret_cast(DOFaddress)); + } + + if (!CAaddress) { + constexpr auto CAStringObfuscated = make_obfuscated<0x4A>("7F ?? 89 AB ?? ?? ?? ?? 42 ?? ?? ?? 39 05 ?? ?? ?? ?? 7E"); + CAaddress = Memory::AOBScan("", CAStringObfuscated.decrypt(), PAGE_EXECUTE_READ); + + if (!CAaddress) + logger->warn("Chromatic aberrations signature not found. Maybe your game has been updated and is no more compatible with this plugin."); + else + logger->info("Chromatic aberrations signature found at address: 0x{:X}.", reinterpret_cast(CAaddress)); + } + + if (!Vignettingaddress) { // B1 01 + constexpr auto CAStringObfuscated = make_obfuscated<0x4A>("83 ?? ?? 7D ?? 89 AB ?? ?? ?? ?? 89 AB ?? ?? ?? ?? 89 AB ?? ?? ?? ?? 89"); + Vignettingaddress = Memory::AOBScan("", CAStringObfuscated.decrypt(), PAGE_EXECUTE_READ); + + if (!Vignettingaddress) + logger->warn("Vignetting signature not found. Maybe your game has been updated and is no more compatible with this plugin."); + else + logger->info("Vignetting signature found at address: 0x{:X}.", reinterpret_cast(Vignettingaddress)); + } + + if (!Fogaddress) { + constexpr auto FogStringObfuscated = make_obfuscated<0x4A>("83 ?? ?? ?? 75 ?? B3 ?? EB ?? 32 ?? 48 ?? ?? ?? ?? 48 ?? ?? 74"); + Fogaddress = Memory::AOBScan("", FogStringObfuscated.decrypt(), PAGE_EXECUTE_READ); + + if (!Fogaddress) + logger->warn("Fog signature not found. Maybe your game has been updated and is no more compatible with this plugin."); + else + logger->info("Fog signature found at address: 0x{:X}.", reinterpret_cast(Fogaddress)); + } + + if (!FPSaddress) { + constexpr auto FPSStringObfuscated = make_obfuscated<0x4A>("F3 0F ?? ?? ?? 80 BF ?? ?? ?? ?? ?? 48 8B ?? ?? ?? 48 8B"); + FPSaddress = Memory::AOBScan("", FPSStringObfuscated.decrypt(), PAGE_EXECUTE_READ); + + if (!FPSaddress) + logger->warn("Framerate signature not found. Maybe your game has been updated and is no more compatible with this plugin."); + else + logger->info("Framerate signature found at address: 0x{:X}.", reinterpret_cast(FPSaddress)); + } + + if (FOVaddress && DOFaddress && CAaddress && Vignettingaddress && Fogaddress && UltraWideaddress && FPSaddress) + logger->info("All AOB signatures found. Ready to patch..."); + + AOBScanDone = true; + + if (!GObjectsaddress || !AppendStringaddress || !ProcessEventaddress) { + logger->info("------------ UEngine offsets search ------------"); + uint8_t* baseModule = reinterpret_cast(GetModuleHandleA(nullptr)); // Get game base address + + constexpr auto GObjetcsStringObfuscated = make_obfuscated<0x4A>("48 8B ?? ?? ?? ?? ?? 48 8B ?? ?? 48 8D ?? ?? EB ?? 33"); + GObjectsaddress = Memory::AOBScan("", GObjetcsStringObfuscated.decrypt(), PAGE_EXECUTE_READ); + constexpr auto AppendStringStringObfuscated = make_obfuscated<0x4A>("48 89 ?? ?? ?? 48 89 ?? ?? ?? 57 48 ?? ?? ?? 8B ?? 48 ?? ?? 8B ?? 48 ?? ?? C1 ?? ?? 80 3D ?? ?? ?? ?? ?? 0F ?? ?? 89 ?? ?? ?? 89 ?? ?? ?? 74 ?? 4C 8D ?? ?? ?? ?? ?? EB ?? 48 8D ?? ?? ?? ?? ?? E8 ?? ?? ?? ?? 4C ?? ?? C6 05 ?? ?? ?? ?? ?? 48 8B ?? ?? ?? 48 ?? ?? 48 ?? ?? ?? 8D ?? ?? 49 ?? ?? ?? ?? E8 ?? ?? ?? ?? 83"); + AppendStringaddress = Memory::AOBScan("", AppendStringStringObfuscated.decrypt(), PAGE_EXECUTE_READ); + constexpr auto ProcessEventStringObfuscated = make_obfuscated<0x4A>("40 ?? 56 57 41 ?? 41 ?? 41 ?? 41 ?? 48 81 ?? ?? ?? ?? ?? 48 8D ?? ?? ?? 48 89 ?? ?? ?? ?? ?? 48 8B ?? ?? ?? ?? ?? 48 33 ?? 48 89 ?? ?? ?? ?? ?? 8B 41"); + ProcessEventaddress = Memory::AOBScan("", ProcessEventStringObfuscated.decrypt(), PAGE_EXECUTE_READ); + + if (!GObjectsaddress) + logger->warn("GObjects signature not found. Maybe your game has been updated and is no more compatible with this plugin."); + else { + uint32_t gObjectsOffset = static_cast(Memory::GetOffsetFromOpcode(GObjectsaddress + 0x3) - baseModule); + logger->info("GObjects offset is: 0x{:X}.", gObjectsOffset); + Offsets::GObjects = static_cast(gObjectsOffset); // Update GObjects offset + } + + if (!AppendStringaddress) + logger->warn("AppendString signature not found. Maybe your game has been updated and is no more compatible with this plugin."); + else { + std::optional gAppendStringOffsetOpt = UE::CalculateOffset("", AppendStringaddress); + uint32_t gAppendStringOffset = *gAppendStringOffsetOpt; + logger->info("AppendString offset is: 0x{:X}.", gAppendStringOffset); + Offsets::AppendString = static_cast(gAppendStringOffset);// Update AppendString offset + } + + if (!ProcessEventaddress) + logger->warn("Process Event signature not found. Maybe your game has been updated and is no more compatible with this plugin."); + else { + std::optional gProcessEventOffsetOpt = UE::CalculateOffset("", ProcessEventaddress); + uint32_t gProcessEventOffset = *gProcessEventOffsetOpt; + logger->info("Process Event offset is: 0x{:X}.", gProcessEventOffset); + Offsets::ProcessEvent = static_cast(gProcessEventOffset);// Update ProcessEvent offset + } + } + + logger->info("-------------- Fixes initialisation -------------"); + } + + if (!init && FOVaddress) FOVFixEnabled(); + if (!init && DOFaddress) DOFFixEnabled(); + if (!init && CAaddress) CAFixEnabled(); + if (!init && Vignettingaddress) VignettingFixEnabled(); + if (!init && Fogaddress) FogFixEnabled(); + if (!init && UltraWideaddress) UltraWideFixEnabled(); + if (!init && FPSaddress) FPSFixEnabled(); + if (!init) EnableConsole(); +} + +// Setters for Reshade addon call +extern "C" __declspec(dllexport) void SetFixesEnabled(GameFixes fix, bool enabled) +{ // Set each fix individually + if (fix == GameFixes::DevConsole) { g_Console = enabled; EnableConsole(); } + if (fix == GameFixes::FOV) { g_fov_fix_enabled = enabled; FOVFixEnabled(); } + if (fix == GameFixes::UltraWide) { g_ultrawide_fix_enabled = enabled; UltraWideFixEnabled(); } + if (fix == GameFixes::Framerate) { g_FPS_fix_enabled = enabled; FPSFixEnabled(); } + if (fix == GameFixes::DOF) { g_DOF_fix_enabled = enabled; DOFFixEnabled(); } + if (fix == GameFixes::ChromaticAberrations) { g_CA_fix_enabled = enabled; CAFixEnabled(); } + if (fix == GameFixes::Vignetting) { g_Vignetting_fix_enabled = enabled; VignettingFixEnabled(); } + if (fix == GameFixes::Fog) { g_Fog_fix_enabled = enabled; FogFixEnabled(); } +} + +extern "C" __declspec(dllexport) void SetFOV(int fov) +{ + g_AdditionalFOVValue = fov; +} + +// Getters for Reshade addon call +extern "C" __declspec(dllexport) void GetGameInfos(GameInfos* infos) { + if (!infos) return; + + infos->FOVIn = g_FOV_In; + infos->FOVOut = g_FOV_Out; + infos->CompensatedFOV = g_CompensatedFOV; + infos->consoleEnabled = g_Console_Enabled; +} + +// Code injection functions +static void FOVFixEnabled() { + if (g_fix_enabled && (g_fov_fix_enabled || g_ultrawide_fix_enabled) && FOVaddress) { + if (!FOVHook) { // Hook only once + FOVHook = safetyhook::create_mid(FOVaddress + 0x7, + [](SafetyHookContext& ctx) { + g_FOV_In = ctx.xmm6.f32[0]; + // FOV compensation when ultrawide is checked + if (aspectRatio > baseAspect && g_ultrawide_fix_enabled) + ctx.xmm6.f32[0] = Maths::CompensateHorizontalFOV(g_FOV_In, baseAspect, aspectRatio); + g_CompensatedFOV = ctx.xmm6.f32[0]; + // Additional FOV + ctx.xmm6.f32[0] += (g_fix_enabled && g_fov_fix_enabled ? g_AdditionalFOVValue : 0); + g_FOV_Out = ctx.xmm6.f32[0]; + }); + } + else FOVHook.enable(); + logger->info("FOV fix enabled"); + } + if (!(g_fix_enabled && (g_fov_fix_enabled || g_ultrawide_fix_enabled)) && FOVaddress) { + if (FOVHook) FOVHook.disable(); + logger->info("FOV fix disabled"); + } +} + +static void VignettingFixEnabled() { + if (g_fix_enabled && g_Vignetting_fix_enabled && Vignettingaddress) { + if (!VignettingHook) { // Hook only once + VignettingHook = safetyhook::create_mid(Vignettingaddress, + [](SafetyHookContext& ctx) { + ctx.rcx = 1; // Set low vignette r.Tonemapper.Quality=1 (0 is too bright) + }); + } + else VignettingHook.enable(); + logger->info("Vignetting fix enabled"); + } + if (!(g_fix_enabled && g_Vignetting_fix_enabled) && Vignettingaddress) { + if (VignettingHook) VignettingHook.disable(); + logger->info("Vignetting fix disabled"); + } +} + +static void FogFixEnabled() { + if (g_fix_enabled && g_Fog_fix_enabled && Fogaddress) { + if (!FogHook) { + FogHook = safetyhook::create_mid(Fogaddress, + [](SafetyHookContext& ctx) { + if (!ctx.rax) return; + uintptr_t* rax = reinterpret_cast(ctx.rax); + bool* bFog = reinterpret_cast(reinterpret_cast(rax) + 0x04); + *bFog = g_fix_enabled && g_Fog_fix_enabled ? false : true; + }); + } + logger->info("Fog fix enabled"); + } + if (!(g_fix_enabled && g_Fog_fix_enabled) && Fogaddress) + logger->info("Fog fix disabled"); +} + +static void FPSFixEnabled() { + if (g_fix_enabled && g_FPS_fix_enabled && FPSaddress) { + if (!FPSHook) { + FPSHook = safetyhook::create_mid(FPSaddress + 0x5, + [](SafetyHookContext& ctx) { + ctx.xmm6.f32[0] = 0; // Set unlimited framerate + }); + } + else FPSHook.enable(); + logger->info("Framerate fix enabled"); + } + if (!(g_fix_enabled && g_FPS_fix_enabled) && FPSaddress) { + if (FPSHook) FPSHook.disable(); + logger->info("Framerate fix disabled"); + } +} + +// Memory patch fixes +static void UltraWideFixEnabled() { + if (g_fix_enabled && g_ultrawide_fix_enabled && UltraWideaddress) { + const char* newAspectRatio = Memory::Float32ToHexBytes(aspectRatio); // Converts new apsect ratio in 4 char bytes + Memory::PatchBytes(UltraWideaddress + 0x6, newAspectRatio, 4); // mov [rax+00000208],3FE38E3B <= patched + logger->info("Ultrawide fix enabled"); + FOVFixEnabled(); + } + if (!(g_fix_enabled && g_ultrawide_fix_enabled) && UltraWideaddress) { + Memory::RestoreBytes(UltraWideaddress + 0x6); + logger->info("Ultrawide fix disabled"); + if (!g_fov_fix_enabled) + FOVFixEnabled(); + } +} + +static void DOFFixEnabled() { // Depth of field (bokeh) + if (g_fix_enabled && g_DOF_fix_enabled && DOFaddress) { + Memory::PatchBytes(DOFaddress, "\x31\xFF\x90", 3); // xor edi,edi r.DepthOfFieldQuality = 0 + logger->info("Depth of field fix enabled"); + } + if (!(g_fix_enabled && g_DOF_fix_enabled) && DOFaddress) { + Memory::RestoreBytes(DOFaddress); + logger->info("Depth of field fix disabled"); + } +} + +static void CAFixEnabled() { // Chromatic aberrations + if (g_fix_enabled && g_CA_fix_enabled && CAaddress) { + Memory::PatchBytes(CAaddress, "\x90\x90", 2); // NOP x 2 r.SceneColorFringeQuality = 0 + logger->info("Chromatics aberrations fix enabled"); + } + if (!(g_fix_enabled && g_CA_fix_enabled) && CAaddress) { + Memory::RestoreBytes(CAaddress); + logger->info("Chromatics aberrations fix disabled"); + } +} + +// UE Console creation +static void EnableConsole() +{ + if (!g_Console) { + logger->info("------------------ User inputs ------------------"); + return; + } + + logger->info("-------------- Console re-enabling --------------"); + if (!GObjectsaddress || !AppendStringaddress || !ProcessEventaddress) { + logger->warn("Could not re-enable console"); + logger->info("------------------ User inputs ------------------"); + return; + } + + std::thread([&]() { + auto start = std::chrono::high_resolution_clock::now(); // Measure the time to renable console + UEngine* Engine = nullptr; + + for (int i = 0; i < 100; ++i) { // gives 10 seconds to find UE Engine + std::this_thread::sleep_for(std::chrono::milliseconds(100)); + Engine = UEngine::GetEngine(); + if (Engine && Engine->ConsoleClass && Engine->GameViewport) + break; + } + + if (!Engine || !Engine->ConsoleClass || !Engine->GameViewport) { + logger->error("Console could not be found in engine."); + return; + } + logger->info("Console found in engine"); + + /* Creates a new UObject of class-type specified by Engine->ConsoleClass */ + UObject* NewObject = UGameplayStatics::SpawnObject(Engine->ConsoleClass, Engine->GameViewport); + if (NewObject) + { + logger->info("Successfully spawned console object"); + // Set the console viewport so that it will be displayed + Engine->GameViewport->ViewportConsole = static_cast(NewObject); + auto end = std::chrono::high_resolution_clock::now(); + std::chrono::duration elapsed = end - start; + + for (int i = 0; i < UInputSettings::GetDefaultObj()->ConsoleKeys.Num(); i++) + { + UInputSettings::GetDefaultObj()->ConsoleKeys[i].KeyName = UKismetStringLibrary::Conv_StringToName(L"F2"); + } + logger->info("Console fully reactivated in {:.3f}s and bound to key F2", elapsed.count()); + logger->info("------------------ User inputs ------------------"); + + g_Console_Enabled = true; + } + else { + logger->error("Could not spawn console object"); + } + }).detach(); +} + +static void InitializeLogger() +{ + try + { + std::filesystem::path log_path = std::filesystem::absolute(PLUGIN_LOG); + if (std::filesystem::exists(log_path)) + std::filesystem::remove(log_path); + logger = std::make_shared("Little Nightmares", std::make_shared(PLUGIN_LOG, 10 * 1024 * 1024, 1)); + logger->set_level(spdlog::level::debug); + logger->flush_on(spdlog::level::debug); // Flush automatically + } + catch (const spdlog::spdlog_ex& ex) + { + std::string plugin_error_message = "Could not open " + PLUGIN_LOG; + MessageBoxA(nullptr, plugin_error_message.c_str(), "Logger Error", MB_ICONERROR | MB_OK); + } +} + +// Standard dll entry +BOOL APIENTRY DllMain(HMODULE hModule, DWORD reason, LPVOID) +{ + if (reason == DLL_PROCESS_ATTACH) + { + InitializeLogger(); + logger->info("Plugin {} loaded.", PLUGIN_NAME); + } + else if (reason == DLL_PROCESS_DETACH) + { + logger->info("Plugin {} unloaded.", PLUGIN_NAME); + spdlog::drop_all(); + } + return TRUE; +} \ No newline at end of file