April 23, 2017

Apache + Yarn + Spark: Play with Twitter data!

In this tutorial I want to write about using Apache Spark on Ubuntu machines where you can develop big data analysis apps with it.

First of all, I want to write a small and quick introduction to Hadoop + Spark environment. Hadoop makes it possible to work with lots of computers in a cluster. Work can be: storing files in cluster (HDFS – Hadoop Distributed File System), storing database in cluster (Apache HBase), or run software in cluster (MapReduce, Spark).

Continue reading Apache + Yarn + Spark: Play with Twitter data!

March 30, 2017

Smali Code Injection: Playing with 2048!

I’ve met 2048 game many years ago. It is an addictive game witch takes lots of time from the player. 🙁

So what should I do if I want to have high score and save time? Here is where Smali takes part. 🙂

In this post I will describe how to inject into Android 2048 game and change the score! Continue reading Smali Code Injection: Playing with 2048!

March 23, 2017

Java Script Based Holy Quran

Personal

I was working on my PhD. thesis and calculating the semantic similarities of words which is very heavy and take hours to response!
Recently I was interested to have a pocket size Quran. I have used Zekr before, but it is not so pocket size!
Continue reading Java Script Based Holy Quran

February 20, 2017

Encrypting Emails using PGP/GPG

PGP (Pretty Good Privacy) is a protocol for encryption and authentication of files and emails. In this tutorial I want to show how to create encrypted and signed emails using GPG (GnuPG), Thunderbird (Email Client), and Enigmail (Connector). I used windows as test case which the steps are same for *nix systems. Continue reading Encrypting Emails using PGP/GPG

February 2, 2017

Secure Programming Sessions – Urmia University CETR

In the next weeks, two sessions about web application vulnerabilities and Android Analysis and Code Injection will be held at Urmia University CERT.

You may register to the event through its registration link HERE.

Continue reading Secure Programming Sessions – Urmia University CETR

December 18, 2016

Smali Code Injection

In this post I wanted to demonstrate a simple code injection example in Android. As indicated in previous posts about reversing java, the method of code execution is same in Android. Whereas Java, the BYTE CODE are SMALI codes here and the executor is Dalvik (recently ART) in Android (not JVM). Here in this post, I will describe shortly how to reverse and inject code in SMALI.

Continue reading Smali Code Injection

November 30, 2016

Installing Kali Linux on USB with VirtualBox

I like to play with VirtualBox. So in this post I will show you how to install Kali Linux on a USB disk with VirtualBox which can be run both on VirtualBox and directly bootable.

Every change you made with VirtualBox (or direct access) will be stored on USB and can be accessed with Direct Access (or VirtualBox). It is awesome to use VirtualBox when you want to work beside another OS. And also awesome when you want to boot directly from Physical Computer.

Continue reading Installing Kali Linux on USB with VirtualBox

November 20, 2016

Lots of IT and Computer Ebooks

Library and Book management is one of my favorite hobbies. I like to categorize (e)books, Albums, and Movies. It is more better if the contents are in my profession, IT!

Recently I and two of my students, have managed lots of IT Ebooks which I am going to tell it’s story.

Continue reading Lots of IT and Computer Ebooks

November 6, 2016

Configuring LATEX for Xepersian and TexStudio

You may sometimes get bored with MS Word of (rarely) LibreOffice Writer. There is another document editor which is more likely to programming! LATEX!

In this tutorial I will show how to install LATEX in windows with TexStudio editor, step by step with pictures.

Continue reading Configuring LATEX for Xepersian and TexStudio

October 16, 2016

How to turn your TV to Media Center

You may be like to collect and watch movies, TV series, or music archives. Then you have to store them in your storage ([External] Hard drives, NAS, …) and use some software to manage them.

However the scenario sounds good but there are other great ways to turn your home network to a full capable media center. Read more to learn how to configure and change your home network to media center.