Pro at assembly?

So since my game has no more offical servers that I cant sniff packets from, how else could I go about making a private server. One person posted that I would have to be pro at assembly to be able to make a private server. What does that mean, hypothetically speaking if I was pro at assembly would I have to RE the whole client? Im confused like what does it really mean to RE the whole client, I know you can open it into an assembler and look at the assembly code of the exe, but what would I have to do after that? Just trying to get a grip on Reverse Engineering.

-Dan

P.S.
And one last question how would I be able to make a pserver, lets say I reverse engineered the whole exe, how would I get the server code from that? Would I look at how it use to connect to the server?

Will you just buy the book already?

Amazon.com: Reversing: Secrets of Reverse Engineering (9780764574818): Eldad Eilam: Books

Answer in short, though: "Reverse-engineering the whole client" is done so that you'll learn what kind of data the client sends and expects to receive, and making minor adjustments so that you get it to connect to your own server rather than the official one. That's all. Once you know this, you can program your server. And I do believe it's easier to program the server from scratch than modify the client to work without a server. But then again I don't know how server-dependent the game is (was). That's some of the information you need to figure out from the client.

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Originally Posted by Negata

Answer in short, though: "Reverse-engineering the whole client" is done so that you'll learn what kind of data the client sends and expects to receive, and making minor adjustments so that you get it to connect to your own server rather than the official one. That's all. Once you know this, you can program your server. And I do believe it's easier to program the server from scratch than modify the client to work without a server. But then again I don't know how server-dependent the game is (was). That's some of the information you need to figure out from the client.

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Ok thanks!

---------- Post added at 07:02 AM ---------- Previous post was at 07:01 AM ----------

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Originally Posted by s-p-n

Will you just buy the book already?

Amazon.com: Reversing: Secrets of Reverse Engineering (9780764574818): Eldad Eilam: Books

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Ill have to check it out!

I higly recommend you
Lena's Reverse Engineering guide, helped me a lot !

Reversing for Newbies with Lena *
you can find them here ;p
Tuts 4 You: Downloads / Lenas Reversing for Newbies

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Originally Posted by PunkS7yle

Reversing for Newbies with Lena *
you can find them here ;p
Tuts 4 You: Downloads / Lenas Reversing for Newbies

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Thanks for these, I will check them out, any other good tutorials out there that you dont mind passing on to me?

-Dan

Hey..we've all learned from books and most of us learned from Lena..
It's a friendly tutorial ^^ There is nothing better, trust me..
You can go backwards, upwards..you have exe's to reverse engineer and so on in there, everything you need...
So why would you need something else?