Is it possible to decrypt Server.dat in 5672+?

Hi,
I'm a french developper that aim to create its own private server. So I've followed the tutorial but I'm stuck on the login screen error, I've tried to change the Ip in csv3config.ini but no request are sent to my private server, I have to be able to crypt/decrypt the server.dat file. Ultimation if you want I can help you to bruteforce the key using cuda if you want.

Anyway I'll try to decrypt it or find another way to load the ip of my server.

Hi, i don't think brute forcing the private key is the way to go, Because its 2048, and would probably require years or alot of $$$ using amazons server cluster.

So my aim was to build my own conquer server, and my previous problem was to load a custom server.dat file,so I've finally found an older version without encrypted server.dat. So I will work on it instead of finding the rsa 2048 key. I'm gonna (re)implement the server using C++ instead of C#. So I surrender for the server.dat decryption.

If you want to know why I choose to change the programing language, it is because I've found a cheap server hosting, but thoses servers use ARM chip.

Good luck bro.

Quote:

Originally Posted by sushilesushi So my aim was to build my own conquer server, and my previous problem was to load a custom server.dat file,so I've finally found an older version without encrypted server.dat. So I will work on it instead of finding the rsa 2048 key. I'm gonna (re)implement the server using C++ instead of C#. So I surrender for the server.dat decryption. If you want to know why I choose to change the programing language, it is because I've found a cheap server hosting, but thoses servers use ARM chip. Good luck bro.

Why not just create your own loader so you can still target the client patch you desire, but csv3 should still work as far as I know. Just seems like a lot to change the entire patch you're targeting because of a minor issue, you don't need to be able to re-encrypt the server.dat

Quote:

Originally Posted by Ultimation the server.dat encryption key is 2048 bytes, i have wrote a program to decrypt, replace the public key in the client with a new keypair, and then i can encrypt using my own key pair. I think that is the closest anyone has bothered to go without the need of hooking.

I have done that years ago but I never released it to the public, I did use it in several paid projects though.

Oh and keep in mind that replacing the key affects not only the server.dat but several other .dat files as well. So you will end up having to re-encrypt them using the new key.

Quote:

Originally Posted by { Angelius } I have done that years ago but I never released it to the public, I did use it in several paid projects though. Oh and keep in mind that replacing the key affects not only the server.dat but several other .dat files as well. So you will end up having to re-encrypt them using the new key.

afaik in the later clients that key is only used for server.dat and suit.dat or something like that, everything else is using [Only registered and activated users can see links. Click Here To Register...]

Quote:

Originally Posted by Ultimation afaik in the later clients that key is only used for server.dat and suit.dat or something like that, everything else is using [Only registered and activated users can see links. Click Here To Register...]

Well it's been forever since I touched the client but here is a list of files that used to share the same key with server.dat.

1. MyAnimate.dat
2. MyAnimate800X600.dat
3. RaceTrackProp.dat
4. role.dat
5. Server.dat
6. showhandlayout.dat
7. showhandlayout800X600.dat
8. ShowHandTable.dat
9. suittype.dat

LOL did someone say they will decrypt 2048 RSA KEY!! Bro, it took me 100 usd and 9 hours to decrypt 512 bit key on EC2... 2048 will take you insane amount of time/money.

no one said such a thing, it was stated that it would take time and money todo... Something nobody is willing to invest in such an old game.

this program is able to decrypt server.dat, I do not know who created it, but I already have enough time

[Only registered and activated users can see links. Click Here To Register...]

[Only registered and activated users can see links. Click Here To Register...]

[Only registered and activated users can see links. Click Here To Register...]

[Only registered and activated users can see links. Click Here To Register...]

Quote:

Originally Posted by forgefor this program is able to decrypt server.dat, I do not know who created it, but I already have enough time

Decrypting isn't the problem. You can just rip the key from the client. The problem is re-encrypting it after you change it. It's worthless having a decryptor if the client doesn't understand it. As stated above, the client would need a patch - and that interferes with other files (apparently). All part of the patch (not a problem, but also not a problem that can be solved with a decryptor alone).

Quote:

Originally Posted by Spirited Decrypting isn't the problem. You can just rip the key from the client. The problem is re-encrypting it after you change it. It's worthless having a decryptor if the client doesn't understand it. As stated above, the client would need a patch - and that interferes with other files (apparently). All part of the patch (not a problem, but also not a problem that can be solved with a decryptor alone).

What he asked was if "Is it possible to decrypt Server.dat in 5672+?", I'm just giving the tool, able to do that!