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Bypassing Serverside Checks for Freelancer ?

 
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djexplosion
How do I cheat?
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Joined: 26 Feb 2008
Posts: 4

PostPosted: Tue Feb 26, 2008 7:03 pm    Post subject: Bypassing Serverside Checks for Freelancer ? Reply with quote

Goal: Change the money or value of items (make cheaper)

My knowledge is between basic and basic Razz.

I get the value, then access the "What writes to this adress"

This is what u get:
004C4D0F - 89 35 64 33 67 00 - mov [cdpserver::`vftable'+8d048],esi : 00018268 ----> I NOP THIS
004C4D15 - 5e - pop esi
004C4D16 - c3 - ret
004C4D17 - 8b 44 24 08 - mov eax,[esp+08]
004C4D1B - a3 64 33 67 00 - mov [cdpserver::`vftable'+8d048],eax : 00018268 ---> I NOP THIS
004C4D20 - 5e - pop esi
004C4D21 - c3 - ret

But when buying stuff the server Still detects i tempered with the money or items prices and kicks me away.

anyone interested in helping me out ?

Thanks in Advance

Vitesh
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Dark Byte
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PostPosted: Tue Feb 26, 2008 7:30 pm    Post subject: Reply with quote

ok. The server knows how much money you have, and every now and then the client tells the server how much money you have. The server checks that with that it had stored and then kick you when it's not the same.

Same for changing prices. The server knows how much something costs. So when you buy a item, the server decreases your money with the original price. And so, when your client tells the server the money you have, it sees it's not what it should be. and kicks you

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djexplosion
How do I cheat?
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Joined: 26 Feb 2008
Posts: 4

PostPosted: Tue Feb 26, 2008 7:44 pm    Post subject: Reply with quote

Ok , i understand that.

But in the past you could edit the data files on the clientside and it was no problem, even memory hacking was possible.

Now you have servergaurd software, (FLHOOK or IONCROSS)
I think its possible to bypass it because people still cheat in the game.

My knowledge though is to basic i think, do you have some guidance for me.
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inkofficejet
How do I cheat?
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PostPosted: Tue Feb 26, 2008 8:46 pm    Post subject: Reply with quote

From what i have read before. The client is responsible for subtracting money/value of something. In theory if you would find the routine of the client and study, then you can defeat server side. And also packet editing and encryption algorithm will be involved, I guess you have to study those things first if you don't know them yet.
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buzzah
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PostPosted: Wed Feb 27, 2008 5:37 am    Post subject: Reply with quote

djexplosion wrote:
Ok , i understand that.

But in the past you could edit the data files on the clientside and it was no problem, even memory hacking was possible.

Now you have servergaurd software, (FLHOOK or IONCROSS)
I think its possible to bypass it because people still cheat in the game.

My knowledge though is to basic i think, do you have some guidance for me.


The easiest way to do this is to find a way to bypass their hack protection softwere. It probably is gameguard so yeah, you do have a chance to bypass it.

I would probably use WPE PRO to do some packet editing, it would probably be the easiest way. That way you could also change some data like a crap sword to a massive one that costs $1,000,000,000 and it would cost you $0, there is ways to do this sort of stuff.

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djexplosion
How do I cheat?
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Joined: 26 Feb 2008
Posts: 4

PostPosted: Wed Feb 27, 2008 6:56 am    Post subject: Reply with quote

inkofficejet wrote:
From what i have read before. The client is responsible for subtracting money/value of something. In theory if you would find the routine of the client and study, then you can defeat server side. And also packet editing and encryption algorithm will be involved, I guess you have to study those things first if you don't know them yet.


uhm, i tried p-editing but its just like you said, i have to study packeting more before i can try to succeed in it.
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