How to hack into GTA Games?

[Jaysds1]

Hi,

How to hack any GTA Game to make a multiplayer based program? like MTA V? or MTA Orange?

[Towncivilian]

BOOL WINAPI DllMain ( HMODULE hModule, DWORD ul_reason_for_call, PVOID lpvReserved ) 
{ 
    switch ( ul_reason_for_call ) 
    { 
    case DLL_PROCESS_ATTACH: 
        // DO STUFF HERE 
        break; 
    case DLL_THREAD_ATTACH: 
        break; 
    case DLL_THREAD_DETACH: 
        break; 
    case DLL_PROCESS_DETACH: 
        break; 
    } 
    return TRUE; 
} 

[SugarD-x]

On top of Towncivilian's hilarious troll, you can study other open-source GTA multiplayer mods and their source codes to get a basic understanding of how they work, and how the games work, so you can make your own, either based on one of their's, or entirely of your own creation.

[Jaysds1]

I searched MODDB for any Multiplayer, but the only one I kept finding is MTA ,

Do you have any suggestions?

[SugarD-x]

There are some now-dead ones like Vice-Players, the original VC:MP 0.1c source code is also public, and of course, MTA:SA is out there, just to get you started.

[Towncivilian]

The code snippet I posted is actually a viable method of injecting code into GTA. Compile, then rename to *.asi and drop it into the root GTA folder (3, VC, or SA) and it will be executed at runtime. It's how I was able to sideload my own SCMs for MTA 0.5r2 and apply some memory patches to disable/alter various GTA properties.

TSearch, OllyDbg, and IDA Pro will get you a long way in terms of reverse engineering. There's also:

• Memory Addresses (SA), Documenting GTA:SA memory addresses, and of course MTA:SA as reference
  
• Memory Addresses (VC), Function Memory Addresses (VC), Documenting GTA3/VC memory addresses, a couple decent gta-vc.exe IDBs (disassembled gta-vc.exes) - acquire IDA Pro yourself, vice-players sauce (based on VC-MP)

Good luck.

[Jaysds1]

Thanks, but I'll take my time

[Cadu12]

I found it for you:

http://www.mediafire.com/?oyizy3om2yt

It is VC:MC and Open Source, but still old

[Jaysds1]

Thanks

[Jaysds1]

acquire IDA Pro yourself

Is this a IDA?

http://www.hex-rays.com/products/ida/index.shtml

[Towncivilian]

Yep, but the free version is several versions older than current. It'll still do the job okay though.

[Cadu12]

I have no idea, how do I hack Starcraft2 to create Multiplayer for free? I can't find "connect" server to change.

[SugarD-x]

I have no idea, how do I hack Starcraft2 to create Multiplayer for free? I can't find "connect" server to change.

StarCraft 2 already offers free multiplayer so long as you legally own the game. Piracy won't be discussed here, so please don't talk about it.

[Cadu12]

If it is free, then I can't play in custom map =/ .

[SugarD-x]

1. StarCraft 2 is not free. It's multiplayer is.

2. Custom made maps still exist. They are called "UMS" or "Use Map Settings" games.

3. You can make custom maps with the Map Editor.

4. Everything you have described works in StarCraft and StarCraft: Brood War too.

5. Piracy is not allowed in this community.

[Cadu12]

Im sorry.

[SugarD-x]

It's alright. Just want to keep you out of trouble.

[Jaysds1]

BOOL WINAPI DllMain ( HMODULE hModule, DWORD ul_reason_for_call, PVOID lpvReserved ) 
{ 
    switch ( ul_reason_for_call ) 
    { 
    case DLL_PROCESS_ATTACH: 
        // DO STUFF HERE 
        break; 
    case DLL_THREAD_ATTACH: 
        break; 
    case DLL_THREAD_DETACH: 
        break; 
    case DLL_PROCESS_DETACH: 
        break; 
    } 
    return TRUE; 
} 

Sorry, i get an error for this...

I changed "//Do Stuff HERE" to my code and it says there's an error on the first line.

[Towncivilian]

Paste code and the error at Pastebin.

[Jaysds1]

actually, nvm, I was missing the opening "{" and had to add another bit of code, thnx though

[Anderl]

Wow, these information in the topic will help me a lot learning C++.

[Orange_]

BOOL WINAPI DllMain ( HMODULE hModule, DWORD ul_reason_for_call, PVOID lpvReserved ) 
{ 
    switch ( ul_reason_for_call ) 
    { 
    case DLL_PROCESS_ATTACH: 
        // DO STUFF HERE 
        break; 
    case DLL_THREAD_ATTACH: 
        break; 
    case DLL_THREAD_DETACH: 
        break; 
    case DLL_PROCESS_DETACH: 
        break; 
    } 
    return TRUE; 
} 

[qaisjp]

Lol Jay, good luck, you will most definitely need it.

[Jaysds1]

Lol Jay, good luck, you will most definitely need it.

Thanks, but I gave up on it longtime ago

[Anderl]

Lol Jay, good luck, you will most definitely need it.

Thanks, but I gave up on it longtime ago

Why dahell?