Programming

Live Hidden Cam

I was researching about Android Malware and their features, compare them. I’ve found that most of them (actually all) do not support live video stream from Android camera, aka Spy Camera, and one that supports live camera, needs an activity. Therefore, I’ve started a hidden spy camera project to live stream video from Android camera to an Rtmp server without activity, named Live Hidden Camera.

Live Hidden Camera in Action
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K9

My Contribution in K9 Android Mail Client

My Contribution in K9 Android Mail Client

K-9 is an attractive, open-source email client for Android with support of IMAP, POP3, SMTP, and exchange protocols. Hence, this client does not support proxy feature. This problem is referenced in #704 #980 #2619. In this post I will talk about my contribution in K-9 project by adding SOCKs proxy feature, which can be used for connecting hidden mail services.

In previous post, I described about connecting Thunderbird, an open source email client for PC, to a hidden mail service. In this post I will talk about modifying K-9 mail and connecting Android client to the hidden mail service.

Continue reading Connecting to Hidden Mail Server using Android
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TorBird

In the previous post, I’ve talked about configuring a hidden email server using hMailServer. In this post I will talk about how to access this hidden Email server. I’m using ThunderBird as email client, tajbakhsh.fake as the fake domain of email server (and accounts), two users (saman@tajbakhsh.fake and test@tajbakhsh.fake).

During all the processes, I assume that the email server is configured as previous post and client has access to the TOR network.

Continue reading Connecting to Hidden Mail Server
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dino

I hardly play the dino game which is created by Google and is available in Chrome browser for playing while there is no Internet connection. But the game itself is popular and can be found in different platforms. Recently I’ve changed two of them and now cacti and birds are ineffective.

Simple JavaScript Running T-Rex Version

There are lots of free versions of the game. Take Running T-Rex for example. The java script code is pretty formatted and ready to be deactivated!

Dino 1

Dino 1

Medium Android Running T-Rex Version

I’ve faced with an Android version of the game. So started to find where the game finishes. Based on JADX decompiler, the following code was the main part of detecting game over.

Dino 2

Dino 2

Based on Smali Code Injection techniques, I’ve deactivated the functions. Now the Dino can run freely both in JavaScript and Android!

Dino JavaScript (Click to see the animated GIF version):

Dino JavaScript

Dino JavaScript

Dino Android (Click to see the animated GIF version):

Dino Android

Dino Android

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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!

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2

Recently I’ve interested in byte code structure of Java and Dalvik. I’ve found some useful tools for playing with them.

Destination Byte Code

Java byte codes are simple to reverse engineering because they compile in run time. i.e. JVM will execute the byte codes in run time, thus Java code is cross platform but executes with more delay than direct compiled machine codes (for example using C++ and gcc).

Continue reading Reversing Java: Part I

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