November 27, 2011
Posted by James W
Chronic Dev Team Releases Project To Crowdsource iOS Jailbreaking
The Chronic Dev Team, the group behind the Greenpois0n jailbreak of past devices, has released a solution to crowdsource the discovery of bugs used to exploit and jailbreak iOS on the iPhone, iPad, and iPod Touch, dubbed Chronic-Dev Crash Reporter. (more screenshots below)
After announcing that Chronic Dev Team was in possession of 5 userland exploits for the iOS 5 untethered jailbreak in September, the team was hit with a number of setbacks after Apple discovered and patched many of the exploits. It was the closing of these exploits that has thus far prevented the release of an untethered jailbreak for the iPad 2, iPhone 4, and iPhone 4S. Apple discovered the exploits with the help of crash reports automatically generated by the tens millions of iOS devices in use by consumers all around the world.
P0sixninja explains
Instead of allowing this vicious cycle to continue, we decided to write a new program to turn Apple’s own beast against its master, per se. All this program requires from you is to attach your iOS device to your computer and click a single button!
At this point, the program copies all the crash reports off your device (which, under normal circumstances, would be sent right back to Apple), and instead sends this data to a secure, private server hosted by your friendly Chronic Dev team. Next, our program proceeds to neuter your copy of iTunes, simply by changing your settings to prevent your computer from sending any further diagnostic information from your device to Apple.
The program, Chronic Dev Reporter, is designed to help the dev team match Apple’s prowess in discovering exploits in iOS. Apple has an army of iOS users whose phones automatically generate and send crash reports to Apple, tipping them off to exploits vital to the creation of a jailbreak. Sometimes, these crash reports even come from members of the dev team themselves inadvertently.
As you can imagine, while we’re working out all the kinks in the exploitation of a vulnerability, we may need to crash any particular program thousands & thousands of times.
It’s possible to change your iTunes settings to stop sending this diagnostic information back to Apple, and of course everyone in Chronic Dev has made this change on all our development machines. However, even this is not always 100% effective at preventing Apple from obtaining our data. For instance, if one of us is at a friend’s house and plugs our iPhone up to his or her computer (even just to charge it), it’s very likely that computer is set up to send all our valuable data & crash reports right back to Apple.
The new program will allow jailbreak users to send crash reports only to Chronic Dev Team, which should allow much faster discovery of exploits as the number of users helping find bugs jumps from a dozen to possibly tens of thousands. Perhaps more importantly though, it will “neuter” any copy of iTunes present on the user’s machine, and prevent any iOS device plugged in from automatically sending crash and diagnostic reports to Apple.
Using this agglomeration of your crash reports and our ninja skills, Chronic Dev will be able to quickly pinpoint vulnerabilities in various programs by using the same techniques Apple currently employs. At the very least, your data will help point us in the direction of which applications are the most vulnerable, so we can focus our time & energy on these with laser-like intensity. And, of course, this will also prevent Apple from accessing all your valuable data, just so they can then turn around and use it against you.
Chronic Dev Reporter is only in available as a beta for Mac OS X at this time, but a stable version for both OS X and Windows will be released shortly. Users who wish to contribute need only download the program, connect their iOS device to their computer with USB, and press a single button.
To download, simply follow the link below:
Chronic Dev Crash Reporter Beta for Mac OS X
Chronic Dev Crash Reporter for Windows
P0sixninja declined to provide information on the progress of the iOS 5 untethered jailbreak for the iPad 2, iPhone 4, and iPhone 4S, only saying they are continuing their diligent work on it and that it would be “coming soon,” as always, for free.
Screenshots:
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