GBS 404 decompilation project

[ₖᵣₒz]

Hi~
I started to work on this project this last week.
The idea is to remake the GBS 404 client with 100% accuracy, updating to C++20, DX11 and VS22

So far what is done:

• Login & Server selection;
• Lobby;
• Buddy (online and offline);
• Avatar Shop (GP & Cash purchases, avatar preview, etc);
• Room Creation;
• Mobile & Item selection;
• Modes & Side selections;
• Poweruser;
• All 17 Mobiles working as the original;
• T1, T2 and SS;
• Movement, terrain destruction, damage, etc;
• Custom login screen (needs polishments with a better UI and design);
• Windows (DX11) and Linux (OpenGL 4.0) clients, 100% functional;

What needs to be done:

• Some UI polishments;
• Custom window mode resolutions;
• Ranking button, showing the paginated ranking in a window (GP and game mode);
• Make Connection and DB more robust and production-ready;

 

[jadsjdjf1]

Nice, whichever one of us finishes first has to go do S1/S2 WC!

 

[ₖᵣₒz]

Changes made:

• Accounts now use MD5 for password;
• Everything authentication-wise is now handled at the login form (incorrect password, banned account, invalid version, etc);
• Server list & buddy broker now use an authenticated token after the login flow is sent and validated;
• Protections agains syn flood and other attacks are now in place;

Pardon my shitty gameplay lmao
a little video to showcase some stuff that is ready

 

[Kimberly]

Consider using a more secure password encryption than MD5. MD5 nowadays is pretty much the same as plain passwords, if I got the names right. MD5 and SHA-1 to be exact. A lot of modern services and the MapleStory scene use B-Crypt nowadays, but i don't know how realistic that is to implement for gunbound

 

[Viserion]

Interesting, no PDB and just one week of work? Which LLM was used (ChatGPT, Claude, or another one)?

 

[ₖᵣₒz]

Interesting, no PDB and just one week of work? Which LLM was used (ChatGPT, Claude, or another one)?

Claude with opus 5.5

 

[jadsjdjf1]

Claude with opus 5.5

It would be interesting to see the code At first I tried to use Claude for some of the code gen too but it was pretty bad, like structured in a way no human would do and super hard to follow. So for me mostly Claude to help with testing and PR reviews making sure I didn't do anything stupid. I also do this (gamedev) for a fulltime job though so it's possible I'm just too "sensitive" to weird code.

 

[ₖᵣₒz]

The code definetly needs a refactor when it is 100% :v