[AntiCheat] Add redundant code scanners

src/Components/Modules/AntiCheat.cpp

@@ -229,6 +229,46 @@ namespace Components
 		AntiCheat::Flags |= AntiCheat::IntergrityFlag::MEMORY_SCAN;
 	}
 
+	void AntiCheat::QuickCodeScanner_1()
+	{
+		static Utils::Time::Interval interval;
+		static Utils::Value<std::string> hashVal;
+
+		if (!interval.elapsed(11s)) return;
+		interval.update();
+
+		// Hash .text segment
+		// Add 1 to each value, so searching in memory doesn't reveal anything
+		size_t textSize = 0x2D5FFF;
+		uint8_t* textBase = reinterpret_cast<uint8_t*>(0x400FFF);
+		std::string hash = Utils::Cryptography::SHA256::Compute(textBase + 1, textSize + 1, false);
+
+		if (hashVal.isValid() && hash != hashVal.get())
+		{
+			Utils::Hook::Set<BYTE>(0x42A667, 0x90); // Crash
+		}
+
+		hashVal.set(hash);
+	}
+
+	void AntiCheat::QuickCodeScanner_2()
+	{
+		static Utils::Time::Interval interval;
+		static Utils::Value<std::string> hashVal;
+
+		if (!interval.elapsed(12s)) return;
+		interval.update();
+
+		// Hash .text segment
+		std::string hash = Utils::Cryptography::SHA1::Compute(reinterpret_cast<uint8_t*>(0x401000), 0x2D6000, false);
+		if (hashVal.isValid() && hash != hashVal.get())
+		{
+			Utils::Hook::Set<BYTE>(0x40797C, 0x90); // Crash
+		}
+
+		hashVal.set(hash);
+	}
+
 #ifdef DEBUG_LOAD_LIBRARY
 	HANDLE AntiCheat::LoadLibary(std::wstring library, HANDLE file, DWORD flags, void* callee)
 	{

src/Components/Modules/AntiCheat.hpp

@@ -31,6 +31,10 @@ namespace Components
 
 		static void VerifyThreadIntegrity();
 
+		static void QuickCodeScanner_1();
+		static void QuickCodeScanner_2();
+		static void QuickCodeScanner_3();
+
 	private:
 		enum IntergrityFlag
 		{

src/Components/Modules/Changelog.cpp

@@ -55,6 +55,10 @@ namespace Components
 
 		// Changelog
 		UIFeeder::Add(62.0f, Changelog::GetChangelogCount, Changelog::GetChangelogText, Changelog::SelectChangelog);
+
+#if !defined(DEBUG) && !defined(DISABLE_ANTICHEAT)
+		Scheduler::OnFrame(AntiCheat::QuickCodeScanner_1);
+#endif
 	}
 
 	Changelog::~Changelog()

src/Components/Modules/Menus.cpp

@@ -766,6 +766,10 @@ namespace Components
 			}
 		});
 
+#if !defined(DEBUG) && !defined(DISABLE_ANTICHEAT)
+		Scheduler::OnFrame(AntiCheat::QuickCodeScanner_2);
+#endif
+
 		Command::Add("mp_QuickMessage", [] (Command::Params*)
 		{
 			Command::Execute("openmenu quickmessage");