feat: Data hash spoofing. (#364)

* feat: Add data hash spoofing.

feat: LogCurrentSessionInfo
To be deleted.

* chore: Remove logcurrentsessioninfo.

* chore(PackOrderHook): Move to SpoofDataHash.

* chore: Update getDLCHashPtrn to support new version.

* chore: Update to 889.15.

I hope this is correct...

* chore: Remove unused include.

* chore: Update data hash to latest.

---------

Co-authored-by: tupoy-ya <tupoy-ya@users.noreply.github.com>

Author: tupoy-ya

src/core/hooking/Hooking.cpp

@@ -40,6 +40,7 @@ namespace YimMenu
 		BaseHook::Add<Hooks::Spoofing::WriteSyncTree>(new DetourHook("WriteSyncTree", Pointers.WriteSyncTree, Hooks::Spoofing::WriteSyncTree));
 
 		BaseHook::Add<Hooks::Network::GetPoolType>(new DetourHook("GetPoolType", Pointers.GetPoolType, Hooks::Network::GetPoolType));
+		BaseHook::Add<Hooks::Network::GetDLCHash>(new DetourHook("GetDLCHash", Pointers.GetDLCHash, Hooks::Network::GetDLCHash));
 
 		BaseHook::Add<Hooks::Matchmaking::MatchmakingAdvertise>(new DetourHook("MatchmakingAdvertise", Pointers.MatchmakingAdvertise, Hooks::Matchmaking::MatchmakingAdvertise));
 		BaseHook::Add<Hooks::Matchmaking::MatchmakingSessionDetailSendResponse>(new DetourHook("MatchmakingSessionDetailSendResponse", Pointers.MatchmakingSessionDetailSendResponse, Hooks::Matchmaking::MatchmakingSessionDetailSendResponse));

src/game/backend/AnticheatBypass.cpp

@@ -7,7 +7,6 @@
 #include "game/gta/Natives.hpp"
 #include "types/rage/gameSkeleton.hpp"
 #include "types/anticheat/CAnticheatContext.hpp"
-#include "types/game_files/CGameDataHash.hpp"
 
 using FnGetVersion = int (*)();
 using FnLocalSaves = bool (*)();

src/game/features/network/SpoofDataHash.cpp

@@ -0,0 +1,100 @@
+#include "core/commands/BoolCommand.hpp"
+#include "core/hooking/DetourHook.hpp"
+#include "game/backend/NativeHooks.hpp"
+#include "game/gta/Natives.hpp"
+#include "game/hooks/Hooks.hpp"
+#include "game/pointers/Pointers.hpp"
+#include "types/game_files/CGameDataHash.hpp"
+
+namespace YimMenu::Features
+{
+	class DumpDataHash : public Command
+	{
+		using Command::Command;
+
+		virtual void OnCall() override
+		{
+			auto log = LOG(VERBOSE);
+			log << "DLC Hash: "
+			    << BaseHook::Get<Hooks::Network::GetDLCHash, DetourHook<decltype(&Hooks::Network::GetDLCHash)>>()->Original()(
+			           *Pointers.DLCManager,
+			           0)
+			    << "\n";
+			if (auto hashes = Pointers.GameDataHash)
+			{
+				log << "validHashes = {" << "\n";
+				for (int i = 0; i < hashes->m_Data.size(); i++)
+					log << hashes->m_Data[i].getData() << ", // " << i << "\n";
+				log << "};";
+			}
+		}
+	};
+	static DumpDataHash _DumpDataHash{"dumpdatahash", "Dump Data Hash", "Dumps the current data hash into the console"};
+
+	static void PackOrderHook(rage::scrNativeCallContext* ctx);
+	class SpoofDataHash : public BoolCommand
+	{
+		using BoolCommand::BoolCommand;
+
+		std::array<std::uint32_t, 16> origHashes;
+
+		virtual void OnEnable() override
+		{
+			NativeHooks::AddHook(NativeHooks::ALL_SCRIPTS, NativeIndex::GET_EVER_HAD_BAD_PACK_ORDER, &PackOrderHook);
+
+			constexpr std::array<std::uint32_t, 16> validHashes = {
+			    1222354255, // 0
+			    1017,       // 1
+			    2008403316, // 2
+			    472,        // 3
+			    0,          // 4
+			    0,          // 5
+			    1061472380, // 6
+			    0,          // 7
+			    0,          // 8
+			    1731098795, // 9
+			    234493012,  // 10
+			    19919,      // 11
+			    4002619495, // 12
+			    307143837,  // 13
+			    2941593772, // 14
+			    200299391,  // 15
+			};
+			if (auto hashes = Pointers.GameDataHash)
+			{
+				for (int i = 0; i < hashes->m_Data.size(); i++)
+					origHashes[i] = hashes->m_Data[i];
+
+				for (int i = 0; i < validHashes.size(); i++)
+					hashes->m_Data[i] = validHashes[i];
+			}
+		}
+
+		virtual void OnDisable() override
+		{
+			if (auto hashes = Pointers.GameDataHash)
+			{
+				for (int i = 0; i < origHashes.size(); i++)
+					hashes->m_Data[i] = origHashes[i];
+			}
+		}
+	};
+
+	static SpoofDataHash _SpoofDataHash{"spoofdatahash", "Spoof Data Hash", "Allows you to join players with rpf mods (or a half installed game)."};
+
+	static void PackOrderHook(rage::scrNativeCallContext* ctx)
+	{
+		return ctx->SetReturnValue(FALSE);
+	}
+}
+
+namespace YimMenu::Hooks
+{
+	uint32_t Network::GetDLCHash(void* manager, uint32_t seed)
+	{
+		if (YimMenu::Features::_SpoofDataHash.GetState())
+			return 2784221708;
+
+		return BaseHook::Get<Network::GetDLCHash, DetourHook<decltype(&Network::GetDLCHash)>>()->Original()(manager, seed);
+	}
+}

src/game/frontend/submenus/Debug/Misc.cpp

@@ -58,6 +58,8 @@ namespace YimMenu::Submenus
 			}
 		}));
 
+		misc->AddItem(std::make_shared<CommandItem>("dumpdatahash"_J));
+
 		return misc;
 	}
 }

src/game/frontend/submenus/Network.cpp

@@ -3,8 +3,8 @@
 #include "core/frontend/Notifications.hpp"
 #include "game/frontend/items/Items.hpp"
 #include "game/frontend/submenus/Network/SavedPlayers.hpp"
-#include "game/gta/Network.hpp"
 #include "game/frontend/submenus/Network/RandomEvents.hpp"
+#include "game/gta/Network.hpp"
 
 namespace YimMenu::Submenus
 {
@@ -111,6 +111,7 @@ namespace YimMenu::Submenus
 		spoofMMRegion->AddItem(std::make_shared<BoolCommandItem>("spoofmmregion"_J, "Spoof Region"));
 		spoofMMRegion->AddItem(std::make_shared<ConditionalItem>("spoofmmregion"_J, std::make_shared<ListCommandItem>("mmregion"_J, "##mmregion")));
 		matchmakingGroup->AddItem(std::make_shared<ConditionalItem>("cheaterpool"_J, spoofMMRegion, true));
+		matchmakingGroup->AddItem(std::make_shared<BoolCommandItem>("spoofdatahash"_J));
 		spoofing->AddItem(matchmakingGroup);
 
 		auto matchmakingSrvGroup = std::make_shared<Group>("Matchmaking (Server)");

src/game/hooks/Hooks.hpp

@@ -87,6 +87,7 @@ namespace YimMenu::Hooks
 		extern void ReceiveNetMessage(void* a1, rage::netConnectionManager* mgr, rage::netEvent* event);
 		extern void ReceiveNetGameEvent(Player player, uint16_t event_id, uint32_t event_index, uint32_t event_handled_bits, rage::datBitBuffer& buffer);
 		extern bool HandleScriptedGameEvent(Player player, CScriptedGameEvent& event);
+		extern uint32_t GetDLCHash(void* manager, uint32_t seed);
 		extern int GetPoolType();
 	}
 

src/game/pointers/Pointers.cpp

@@ -4,6 +4,7 @@
 #include "core/memory/ModuleMgr.hpp"
 #include "core/memory/PatternScanner.hpp"
 #include "core/util/Joaat.hpp"
+#include "types/network/rlSessionInfo.hpp"
 #include "types/rage/atArray.hpp"
 
 namespace YimMenu
@@ -389,6 +390,17 @@ namespace YimMenu
 			BattlEyeServerProcessPlayerJoin = ptr.Sub(4).Rip().As<PVOID*>()[1];
 		});
 
+		constexpr auto gameDataHashPtrn = Pattern<"48 8D 3D ? ? ? ? 69 C9">("GameDataHash");
+		scanner.Add(gameDataHashPtrn, [this](PointerCalculator ptr) {
+			GameDataHash = ptr.Add(3).Rip().As<CGameDataHash*>();
+		});
+
+		constexpr auto getDLCHashPtrn = Pattern<"31 D2 E8 ? ? ? ? 3B 84">("GetDLCHash&DLCManager");
+		scanner.Add(getDLCHashPtrn, [this](PointerCalculator ptr) {
+			DLCManager = ptr.Sub(4).Rip().As<void**>();
+			GetDLCHash = ptr.Add(3).Rip().As<PVOID>();
+		});
+
 		constexpr auto assistedAimShouldReleaseEntityPtrn = Pattern<"80 7F 28 04 75 6A">("AssistedAimShouldReleaseEntity");
 		scanner.Add(assistedAimShouldReleaseEntityPtrn, [this](PointerCalculator ptr) {
 			AssistedAimShouldReleaseEntity = ptr.Sub(0xF).As<PVOID>();

src/game/pointers/Pointers.hpp

@@ -42,6 +42,7 @@ class PoolEncryption;
 class CStatsMgr;
 class CNetShopTransaction;
 class CNetworkSession;
+class CGameDataHash;
 class CStatsMpCharacterMappingData;
 class CAnticheatContext;
 
@@ -154,6 +155,9 @@ namespace YimMenu
 		CStatsMpCharacterMappingData* StatsMpCharacterMappingData;
 		int* HasGTAPlus;
 		PVOID BattlEyeServerProcessPlayerJoin;
+		CGameDataHash* GameDataHash;
+		void** DLCManager;
+		PVOID GetDLCHash;
 		PVOID AssistedAimShouldReleaseEntity;
 		Functions::AssistedAimFindNewTarget AssistedAimFindNewTarget;
 		rage::gameSkeleton* GameSkeleton;

src/types/game_files/CGameDataHash.hpp

@@ -10,4 +10,4 @@ class CGameDataHash
 	std::array<rage::Obf32, 16> m_Data;
 };
 static_assert(sizeof(CGameDataHash) == 0x104);
-#pragma pack(pop)
+#pragma pack(pop)