Solved

Is signing an assembly protection against cracking?

Posted on 2007-04-03
3
240 Views
Last Modified: 2013-11-26
For a .NET 2.0 winform app, is using SN.EXE along with obsfucation enough to discourage most crackers?  

How can even the most determined crackers get around those two techniques?
0
Comment
Question by:brettr
3 Comments
 
LVL 16

Assisted Solution

by:AlexNek
AlexNek earned 200 total points
ID: 18845660
>Is signing an assembly protection against cracking.
With signing it is not so easy to modify the code.
With obsfucation it is not so easy to understand "reassembled" code.

Here is good article about signing, I think.
http://www.codeguru.com/columns/experts/article.php/c4643/

I personally don't know how to change signed assembly now but I believe it is possible to crack an application with digitally signed assembly.
0
 
LVL 35

Accepted Solution

by:
mrichmon earned 300 total points
ID: 18846421
>>For a .NET 2.0 winform app, is using SN.EXE along with obsfucation enough to discourage most crackers

No.  If someone wants to crack your code it is not going to do it.  In fact, they could use a free reflector and see your code in a much easier to read manner if they chose.

Signing just means that they could not modify your code then reupload it to your server, without some other changes.  It doesn't mean they can't change it.   They would just be unable to re-sign it with your key - unless they stole that somehow.  Of course if they can upload code to your server you have bigger problems than whether or not your code is signed...
0

Featured Post

Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This document covers how to connect to SQL Server and browse its contents.  It is meant for those new to Visual Studio and/or working with Microsoft SQL Server.  It is not a guide to building SQL Server database connections in your code.  This is mo…
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

832 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question