Stop the fake 5* battle results with #checksum

Cannibals

Approved user
Joined
Aug 9, 2015
Messages
605
The battle result says they 5* your base, but the replay shows an impossible victory after a few seconds of combat by a handful of weak troops. This is annoying in MP but completely overturns the outcome of wars. This is not healthy for the game. Enough already!

Nexon could easily prevent this cheat by adding a digital fingerprint (a checksum hash) to the battle result. It is a small calculated value unique to the two players and the actual battle result that cannot be faked when properly implemented. I don’t understand why they don’t just do it.

#checksum
 

cakeden

Approved user
Joined
Apr 7, 2019
Messages
25
Yes, i face the same problem too, heres some proof.
 

Attachments

  • Screenshot_20190823-192311_DomiNations.jpg
    Screenshot_20190823-192311_DomiNations.jpg
    756.6 KB · Views: 51
  • Screenshot_20190823-192330_DomiNations.jpg
    Screenshot_20190823-192330_DomiNations.jpg
    663 KB · Views: 49

Cannibals

Approved user
Joined
Aug 9, 2015
Messages
605
Joe, adding security to battle results won’t harm anything even if it is just a bad replay. But it is hard to imagine that 5 Iron Age infantry actually defeated a space age base and the replay is just amiss. And that it has happened agains hundreds of players.

#checksum
 
Last edited:

Eegon Spengler

New member
Joined
Aug 18, 2019
Messages
12
No Title

Agreed that something has to be done. If the checksum approach is such a simple fix, why wasn't this used initially? Is this standard in other games?

In addition, I was hit twice by the same cheater in a few days which to me means he has some way of saving a player's base to attack it again repeatedly. How is this possible?

proof
 

Attachments

  • photo13452.jpg
    photo13452.jpg
    156.3 KB · Views: 49
  • photo13453.jpg
    photo13453.jpg
    152 KB · Views: 47

SirViper

Approved user
Joined
May 19, 2016
Messages
55
Very common at high levels. I’m assuming this is still the result of the matrix glitch that hasn’t been fully patched. I’ve been getting attacked by them constantly. It’s not a replay glitch. They drop infantry only and log says they 5 starred my max defense base. Not possible.
 

Cannibals

Approved user
Joined
Aug 9, 2015
Messages
605
This isn’t matrix. It’s unscrupulous players running an unsophisticated app that intercepts the battle result message and simply updates where it says 0* to instead say 5*. They wouldn’t be able to do it if there was a digital fingerprint on the message that would indicate when it had been tampered with.

#checksum
 

Cannibals

Approved user
Joined
Aug 9, 2015
Messages
605
That’s a different problem. In that case, they did actually get a 5* victory albeit through invalid means and the battle report matches the outcome. This fix would stop the cases were the outcome is tampered with before it gets reported to Nexon servers.

#checksum
 

Tsamu

Approved user
Joined
Apr 29, 2016
Messages
724
If it really is as simple as an app intercepting and changing the number of stars then a checksum will be a good counter measure. Until the developer works out how the checksum is calculated and builds it into the app. We also need an AI auditor of all battles to spot impossible results (like 6 infantry clearing a base the same age or higher) and dealing with the cheater. The punishment is probably a subject for a new topic though.
 

Cannibals

Approved user
Joined
Aug 9, 2015
Messages
605
AI auditor is a great idea, and it will work better if it audits battle results that have not been tampered with. There are readily-available hashes like SHA-1 that can be used as a checksum for unbreakable security of battle results so that hackers won’t be able to duplicate it. #checksum
 

Cannibals

Approved user
Joined
Aug 9, 2015
Messages
605
Sigh ... another loss to a handful of weak troops in just 6s. This is the biggest issue with the game today imo. #checksum
 

Persia

Approved user
Joined
Jan 31, 2017
Messages
274
It’s likely your medal range. Get high enough, and there are only a few bases to hit. Nobody can “save” a base to later hit them unless you get attacked by them, but I don’t think that’s the case here, since he had already attacked you.
 

No Angel

Approved user
Joined
May 1, 2017
Messages
1,386
I know it sounds silly to ask, from me.. 😅😆 but how does this checksum work?
Does it only work on developer server, or does it apply to our game and devices as well?
 

Cannibals

Approved user
Joined
Aug 9, 2015
Messages
605
The result of the battle would be run through a one-way algorithm on your device to calculate a unique number matching that result. The number would then be sent to Nexon along with the battle result. If the battle result is tampered with along the way, it won’t match against the unique number when it arrives at Nexon’s server. #checksum
 
Top