Wednesday, March 2, 2011

Brute force….

5 comments

Hi there!, It’s quite late to write a new post due to my heavily busy weeks . Anyway recently I firemasterwas able to break down a windows password(Of course it’s simple as ABC Winking smile ) but I thought it might helpful to discuss about brute force attacking method.

There are several password finding methods,

1.Common and most time consuming one is so called ‘ Brute Force’
2. The other one is ‘Dictionary Attack’

 

and there are more ways, but it’s up to you to find .

So what is Brute Force.

According to Wikipedia…..

a brute force attack or exhaustive key search is a strategy that can in theory be used against any encrypted data[1] by an attacker who is unable to take advantage of any weakness in an encryption system that would otherwise make his/her task easier. It involves systematically checking all possible keys until the correct key is found. In the worst case, this would involve traversing the entire search space.

but how it works ? That’s the question, Here’s how it works

lets see the password is “CDE”

We can write a simple program or a Script to input the password by key by key ,related to ASCII value.(This is a simple way)

First the program will try from  

AAA
BAA
CAA
DAA   and so forth . Open-mouthed smile

Until it finds the ‘CDE’ character set.

It’s pretty time consuming task but there is a special version of brute force attack called ‘Rainbow Tables’ .I’ll write about them later .And there are number of ways to overcome this. One way is to encrypt the codes by “One type pad” cryptographic method. .

other common ways are,

-Add more characters other than letters or numbers such as ‘*’ ,’@’,’#’
-Use a bit long password. (But remember the password!)
-Imposing a 30 second delay between failed authentication attempts
-Locking the account after 5 failed authentication attempts

Like these things to find a key by brute force attack will take time than attacker expected! .

Tuesday, January 4, 2011

Use Your Camera to Stitch the World!

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Hi folks!, Very Happy New year.This time I’m not going to explain a developing tool ;).

logo This is just a web app by Microsoft and this thing have some amazing capabilities . So what is this ? This tool called Microsoft Photosynth. This will allow you to virtually build an Environment with the help of your captured photos.

You didn’t get it right? Yes . OK Imagine you are in TajMahal(Hope you are not Shah Jahan!!) Now you have a Digital Camera.What will you do . Shooting ,Shooting like this is the end of the world!. Then what will you do just uploading those to FB or someplace.

Imagine If you can visualize a 3D map with the help of your photos of TAJ MAHAL ! Now this is the place where the Photosynth comes in.

Photosynth can Generate the map.This is a remarkable technology.Just give it a try.

To view those synthed images you need Silverlight .So Install them. And there is a Guide on how to Shoot photos for photosynth.

Here is an Example.

This is the Guide

Happy Synthing!!!

Saturday, November 27, 2010

F.A.Q s of Microsoft Student Champs….

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Hi there ! Microsoft Sri Lanka has initiated a student community called Microsoft Student Champs and I’ll tell what is this community and how it acts and so forth;39224_421115522434_503907434_4649536_1280945_n

1.What is Microsoft Student Champs.?

MSC is a Student Based community which was initiated by Microsoft Sri Lanka .This  is like Microsoft Student Partner Program in Other countries.

2.Is it just a technical community?

Nope.It’s not .For the Survival of IT related graduates they need more than something which they normally don’t get from their Universities .This community will provide those things for them.

3. What are the other things?

Well,You can improve your presentation skills,How to face for an Interview(Improve your Soft Skills.).Sharing the knowledge with Other university people and Industry professionals.And there are so many things that you can get from this.For this MSC Organizing a Non-Tech meeting too.

4.Well . How  I can join to this community?

Any University Student can join to this community.This Month is especially for the new comers!.We called it Networking Month.33439_443745192434_503907434_5148265_7741575_n

You can log in to the champs web or visit our Facebook Group for getting the latest Information on this community.

Saturday, November 13, 2010

Cool Tricks & Tips in VS 2010(Part I)

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Hi there after a few weeks ! . Anyway Microsoft Visual Studio 2010 has some remarkable features which you can never ever find from another IDE exists in the World!!!

So enough talking ,Lets find what are the Cool Features in this excellent IDE.

 

Arrange and Dock Feature.

VS 2010 has enhanced its docking feature of it’s sub windows.

They are ,

  • Tab-dock windows to the editing frame.

  • Dock tool windows to the edge of a frame in the IDE.

  • Float windows over or outside the IDE.

  • Minimize tool windows along the edge of the IDE.

  • Display windows on different monitors.

  • Tile windows in the editing frame.

  • Reset window placement to the default layout.

 

The following diagram shows the guide diamonds that appear when you drag a tool window or document window toward the center of the IDE. The diamond on the right edge only appears when you drag a tool window toward the edge of the IDE.

 

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To dock tool windows and document windows
  1. Click the tool window or document window you want to dock.

  2. Drag the window toward the middle of the IDE.

    A guide diamond appears. The four arrows of the diamond point toward the four sides of the editing pane. If the window is a tool window, an additional four arrows point to the four edges of the IDE.

  3. When the window you are dragging reaches the location where you want to dock it, move the pointer over the corresponding portion of the guide diamond. The designated area is shaded.

  4. To dock the window in the position indicated, release the mouse button.

 

Zoom

You can zoom in or out in any code or text editing window by pressing and holding the CTRL key and moving the scroll wheel on the mouse. The zoom feature does not work in other windows.

Box Selection

New VS 2010 has added the following new features to the IDE.(Previous versions of VS also had the Box Selection ,you could select a rectangular region of text by holding down the Alt key while selecting a region with the mouse. You could then copy or delete the selected text)

  • Text insertion: Type into a box selection to insert the new text on every selected line.

  • Paste: Paste the contents of one box selection into another.

  • Zero-length boxes: Make a vertical selection zero characters wide to create a multi-line insertion point for new or copied text.

Architecture Explorer

A cool addition in VS2010 is the Architecture Explorer (Click View->Architecture Explorer).This will provide visual interfaces for navigate through your solutions.

image_thumb31 image_thumb39

 

References:- Microsoft Developers Network,amazedsaint’s .net journal.

Saturday, October 9, 2010

.NET Workshop @ SUSL

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A two day .NET Workshop was organized at Sabaragmuwa University of Sri Lanka on 30th September and 1st of October and the Workshop was conducted by the Microsoft Student Champs Community.

The Opening Ceremony was started with a keynote speech which was conducted by Mr.Wellington Perera (Director –Developer Platform Evangelism,Microsoft Sri Lanka) and following speech was done by Dr C.P Udawatte (Dept Head-physical sciences,Faculty of Applied Sciences)

 

In this workshop there are several areas are covered with .NET technology such as,

  • C#.NET
  • OOP with C#
  • ADO.NET & SQL Server
  • Web Services
  • ASP.NET

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Behalf of the Champs community Several Students Ambassadors,

  • Madusha Nanayakkara
  • Chanaka Herath
  • Prageeth Sandakelum

and

Sachira Chintana as a Student champ came to the conduct the workshop

and Two Guest speakers,

  • Mr.Prabath Fonseka
  • Mr.Chandana Athauda

came to share the knowledge of them with the students.

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Wednesday, August 18, 2010

Greenfoot- Java Game Programming and Learning Programming made easy!

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greenfoot-64 Greenfoot is actually a Framework,It is very very helpful for Novice Programmers and this is mainly aimed for JAVA assignments which have two dimensional grids(Like burick! burick !! Games) :D.
Greenfoot has,
  • Framework for creating two dimensional grids in JAVA
  • Integrated Development Environment(class browser,editor,compiler,execution,etc)
Framework:-
Framework has two responsibilities,
  1. Make it easy to create graphical representations of objects.
  2. Control the execution (start, stop, step) of a simulation loop.

IDE of Greenfoot
The greenfoot environment contains the typical elements of a development environment:
  • A source code editor
  • A class browser
  • Compilation
  • Execution control
  • A debugger
    Who should use greenfoot?(Adopted from Authors)
    Greenfoot is aimed at programming at high school level or above (from age 13 up). It can be effectively used at school level, college and university, and even in advanced university courses. The students at high school levels might not be as commited to programming and we have tried to create an interesting program that should engage the student. In order to do this, we acknowledge that students have different opinions on what might be interesting. Hence, we sought to create a flexible environment that could be customised for the specific group of students. Furthermore, in the design of greenfoot we considered the different learning styles of students. you can  download this  from Greenfoot.org and it needs JDK also.

Friday, August 6, 2010

Windows Phone 7 Programming-Ebook

2 comments

Hi there Microsoft press has announced Giving an ebook about Programming Windows Phone 7 and this was written by Petzold(you know him right ? Programming windows ….etc ;) )And this Excerpt Edition has only 6 chapters but 11 to go!

Here are the contents of this Book,

Part I   The Basics8865.9780735643352f2_thumb_22FE659B

Chapter 1   Hello, Windows Phone 7

Chapter 2   Getting Oriented

Chapter 3   An Introduction to Touch

Chapter 4   Bitmaps, Also Known as Textures

Chapter 5   Sensors and Services

Chapter 6   Issues in Application Architecture

 

Part II   Silverlight

Chapter 7   XAML Power and Limitations

Chapter 8   Elements and Properties

Part III   XNA

Chapter 20   Principles of Movement

Chapter 21   Textures and Sprites

Chapter 22   Touch and Play

You Can download this from here.