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Posted
On 7/14/2019 at 6:27 AM, fallton13 said:

@Zirak

That’s extremely similar to how the old FF game was hacked before it was taken down. How did you manage the weapon stat change? I’d like to try it. Does it actually manage to work with the boost or does it still act at the original level? And does it cause a bad battle key return if it’s used?

if it works it could be a step toward a possible high dmg hack.

Damage is reflected in game, but it results in a battle key validation error when the game won packet is sent.

Posted (edited)

I've ran some more tests and confirmed the game has server sided validation/damage computation (logic seems to be pretty good as well, as it seems to reliably know whether you should win or lose at the server level). It also explains how it can do quick battles in Arena and determine whether you should win/lose, seems like the determination is done by the server and leaves a small margin of error for RNG. This check doesn't apply if you fight your friends (from the friend list), but appears to be checked everywhere else...

 

So the best that this thing can do is if you have a team that has a 10% win rate (and the game server knows that team has a chance to win legit), you can potentially spoof the stats to guarantee a win and save time...

As a programmer I'm impressed with how they've pulled it out, since it means they need to simulate the game play (factoring in the time, and animation for each skill, DPS, skill stuns, etc.) and judge whether the team comp you picked with the gear is eligible for a win. I've tried spoofing one item on Shemira and have a fully loaded (legit) team try to clear 9-20, and was able to JUST barely clear it, and it would still fail with a battle_check_key error, so the logic to validate this must be really accurate.

Here's a video:

 

Updated by Zirak
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