Monday, June 1, 2015

HOW TO HACK A COMPUTER USING JUST AN IMAGE

Posted by Sabeer Nadir

















Next time when someone sends you a photo of a cute cat or a hot chick than be careful before you click on the image to view — it might hack your machine.



Yes, the normal looking images could hack your computers — thanks to a technique discovered by security researcher Saumil Shah from India.

Dubbed "Stegosploit," the technique lets hackers hide malicious code inside the pixels of an image, hiding a malware exploit in plain sight to infect target victims.
Just look at the image and you are HACKED!

Shah demonstrated the technique during a talk titled, "Stegosploit: Hacking With Pictures," he gave on Thursday at the Amsterdam hacking conference Hack In The Box.

According to Shah, "a good exploit is one that is delivered in style."

Keeping this in mind, Shah discovered a way to hide malicious code directly into an image, rather than hiding it in email attachments, PDFs or other type

s of files that are typically used to deliver and spread malicious exploits. -

To do so, Shah used Steganography — a technique of hiding messages and contents within a digital graphic image, making the messages impossible to spot with the naked eye.

Here's How to Hack digital pictures to send malicious exploits:

Until now Steganography is used to communicate secretly with each other by disguising a message in a way that anyone intercepting the communication will not realise it's true purpose.

Steganography is also being used by terrorist organisations to communicate securely with each other by sending messages to image and video files, due to which NSA officials are forced to watch Porn and much porn.

However in this case, instead of secret messages, the malicious code or exploit is encoded inside the image’s pixels, which is then decoded using an HTML 5 Canvas element that allows for dynamic, scriptable rendering of images.

The "Secret Sauce" behind Stegosploit — this is what Shah calls it.

The malicious code, dubbed IMAJS, is a combination of both image code as well as JavaScript hidden into a JPG or PNG image file. Shah hides the malicious code within the image’s pixels, and unless somebody zoom a lot into it, the image looks just fine from the outside.

The bottom line here is:

You should not presume the image files as "innocent" anymore, as they can hide malicious code deep inside its pixels that could infect your computers.

Therefore, always make sure before you click on one.
Shah has been working on the research [PDF] during his spare time for almost five years, but he has not tested his technique on popular image sharing websites like Dropbox or Imgur. He also admitted that his method might not work everywhere.

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