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You can see the source code from the exe file in .Net !!! - Page 2

post #11 of 55
Quote:
Originally Posted by Fantasy View Post

Quote:
Originally Posted by ixsis View Post

Nothing against the OP but is this really the first you have realized this? .NET is about 12 years old and has always been this way. The power of reflection is two fold... You can always compile it to native code (but you would loose the ability to reflect your own code and then its not really a .net assembly anymore is it?)

I have been using C# and .Net for about 3 months. I started programming 2 years ago.

So....

No problem. But yes, this has always been the case with most languages that require built-in reflection, like Java and C#. I used a reflection utility to view the source for XNA's math libraries so that I could understand the expense of the algorithms, so that I would know how it would affect my game engine by using them. Even Microsoft can't get around this limitation. But most programs aren't doing so something that is secretive enough for full obfuscation, and if they need to be then you'll either not want to use C# or you may want to do something like require an Internet connection and run part of the program on a server, like Diablo 3 does. Generally most professional programs doing something innovative is protected by its patents, so it wouldn't matter if someone else could see the source code.
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post #12 of 55
Thread Starter 
Quote:
Originally Posted by lordikon View Post

No problem. But yes, this has always been the case with most languages that require built-in reflection, like Java and C#. I used a reflection utility to view the source for XNA's math libraries so that I could understand the expense of the algorithms, so that I would know how it would affect my game engine by using them. Even Microsoft can't get around this limitation. But most programs aren't doing so something that is secretive enough for full obfuscation, and if they need to be then you'll either not want to use C# or you may want to do something like require an Internet connection and run part of the program on a server, like Diablo 3 does. Generally most professional programs doing something innovative is protected by its patents, so it wouldn't matter if someone else could see the source code.

ohh well.

thanks anyways smile.gif
    
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post #13 of 55
Yeah I haven't bothered obfuscating a single app of mine. DotFuscator is probably the best to use though if you want to do it.
Reverse engineering something like this is only a real problem if the source code contains sensitive data (which no programmer would include sensitive data directly embedded in the source now, would they?)
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post #14 of 55
Thread Starter 
Quote:
Originally Posted by tompsonn View Post

Yeah I haven't bothered obfuscating a single app of mine. DotFuscator is probably the best to use though if you want to do it.
Reverse engineering something like this is only a real problem if the source code contains sensitive data (which no programmer would include sensitive data directly embedded in the source now, would they?)

sensitive data like what? and if I would to include sensitive data where would I store them? SQL server perhaps?

I don't care if people look at my source code. My real problem is how do I prevent people from hacking a multiplayer game? If they can see the client and server source code then they can hack any game they want. They can increase gold, lower other players health, increase loot etc...
    
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post #15 of 55
Quote:
Originally Posted by Fantasy View Post

sensitive data like what? and if I would to include sensitive data where would I store them? SQL server perhaps?
I don't care if people look at my source code. My real problem is how do I prevent people from hacking a multiplayer game? If they can see the client and server source code then they can hack any game they want. They can increase gold, lower other players health, increase loot etc...

Passwords, connection strings... you know. Encryption keys... silly things like that.
I wouldn't bother really - there's plenty more ways to hack a game, even if you prevented this one single method.

You may look into digitally signing the client files and verifying them each time someone connects, that should stop client assembly modification.
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post #16 of 55
Thread Starter 
Quote:
Originally Posted by tompsonn View Post

Passwords, connection strings... you know. Encryption keys... silly things like that.
I wouldn't bother really - there's plenty more ways to hack a game, even if you prevented this one single method.
You may look into digitally signing the client files and verifying them each time someone connects, that should stop client assembly modification.

Ok i'm storing my database password in my source code. Where would I store the password?
    
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post #17 of 55
I honestly don't worry about it. If you're coding anything that has to be secure, try use a language that doesn't have built-in reflection.
I've Dotfuscated PSUCalcs source code, but you can understand it pretty easily if you felt like trying to decipher it.
Here's a dotfuscated function from the code:
Code:
// g
private void l(object A_0, EventArgs A_1)
{
        this.d.ForeColor = Color.Red;
        this.d.Text = "Working";
        this.Refresh();
        this.ae.Enabled = this.af.Checked;
        if (this.ah.SelectedItem != null && this.af.Checked && j.a(this.a5, this.ah.SelectedItem.ToString()))
        {
                this.ae.Enabled = false;
        }
        if (this.ah.SelectedItem != null && this.af.Checked && j.a(this.a4, this.ah.SelectedItem.ToString()))
        {
                this.ad.Enabled = true;
        }
        else
        {
                this.ad.Enabled = false;
        }
        this.d.ForeColor = Color.Green;
        this.d.Text = "Ready";
        this.Refresh();
}
Not too hard to understand what's going on really. Most of the processing is server-side with the latest builds of PSUCalc as it is easier for us to make changes to the math without having to release constant client updates.
Quote:
Originally Posted by Fantasy View Post

Ok i'm storing my database password in my source code. Where would I store the password?
Definitely not a good idea. Make a proxy to handle your requests (i.e. a PHP script on a web server that takes the query, makes sure it's fine and runs it, returning the result).
Edited by FiX - 11/18/12 at 10:56pm
    
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post #18 of 55
Quote:
Originally Posted by FiX View Post

I honestly don't worry about it. If you're coding anything that has to be secure, try use a language that doesn't have built-in reflection.
I've Dotfuscated PSUCalcs source code, but you can understand it pretty easily if you felt like trying to decipher it.
Here's a dotfuscated function from the code:
Code:
// g
private void l(object A_0, EventArgs A_1)
{
        this.d.ForeColor = Color.Red;
        this.d.Text = "Working";
        this.Refresh();
        this.ae.Enabled = this.af.Checked;
        if (this.ah.SelectedItem != null && this.af.Checked && j.a(this.a5, this.ah.SelectedItem.ToString()))
        {
                this.ae.Enabled = false;
        }
        if (this.ah.SelectedItem != null && this.af.Checked && j.a(this.a4, this.ah.SelectedItem.ToString()))
        {
                this.ad.Enabled = true;
        }
        else
        {
                this.ad.Enabled = false;
        }
        this.d.ForeColor = Color.Green;
        this.d.Text = "Ready";
        this.Refresh();
}
Not too hard to understand what's going on really. Most of the processing is server-side with the latest builds of PSUCalc as it is easier for us to make changes to the math without having to release constant client updates.
Definitely not a good idea. Make a proxy to handle your requests (i.e. a PHP script on a web server that takes the query, makes sure it's fine and runs it, returning the result).

That's not real DotFuscator though, just the free one with VS, isn't it?
Also are you suggesting using some PHP script to proxy a database password!?!??!
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post #19 of 55
Thread Starter 
Ok my head is really starting to hurt. This is just too much work for one person. confusedsmiley.png
Quote:
Originally Posted by FiX View Post

Make a proxy to handle your requests (i.e. a PHP script on a web server that takes the query, makes sure it's fine and runs it, returning the result).

I didn't understand you.
    
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post #20 of 55
Quote:
Originally Posted by Fantasy View Post

Ok my head is really starting to hurt. This is just too much work for one person. confusedsmiley.png
I didn't understand you.

This isn't a good idea for a password unless you put it over a secure connection ... even then I wouldn't recommend it.
Although I'm pretty sure he meant use a proxy to talk to the server from the client. If you do it this way, then you store the password on the server (for example, in app.config).

If you use something like WCF, you can do this fairly easily. You use the WCF service to communicate with the server from the client. The client never authenticates with the ACTUAL database.

Although without info on how your app actually works it is hard to give a proper recommendation.
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Ol' Sandy
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