WindowBreak Now Offering Easy WP7 Interop Unlock (Video)

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Last week, we heard whispers of the coming arrival of a new jailbreak for Windows Phone devices. All we knew at the time was that it was supposed to be an alternative to paying the $9 required for a Chevron Labs unlock. Today, details of the hack were announced, and while it won’t replace existing unlocks, it does provide an easy way to expand the usefulness of unlocked hardware.

The WindowBreak project has released a tool for conveniently performing an interop unlock on a handset already set up for development thanks to an AppHub or Chevron Labs unlock (Update: the author has clarified that the tool doesn’t require any previous unlock). The interop lock prevents unauthorized apps (including those you sideload on an unlocked phone) written in native code from accessing system drivers, preventing certain functionality required for homebrew apps like WP7 Root Tools.

The exploit takes advantage of directory-handling during the extraction of files from XAP containers. A properly-constructed XAP can be tailored to deliver its files to directories on your phone that should otherwise be out-of-reach. Then it’s just a short trip to the phone’s diagnostic tools to trigger the payload.

WindowBreak works fine on Samsung phones, but Nokia and HTC models have some extra protection in place that’s making things difficult. Work continues with the hope of bringing the tool to all Windows Phone hardware.



Source: XDA-Developers forum

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About The Author
Stephen Schenck
Stephen has been writing about electronics since 2008, which only serves to frustrate him that he waited so long to combine his love of gadgets and his degree in writing. In his spare time, he collects console and arcade game hardware, is a motorcycle enthusiast, and enjoys trapping blue crabs. Stephen's first mobile device was a 624 MHz Dell Axim X30, which he's convinced is still a viable platform. Stephen longs for a market where phones are sold independently of service, and bandwidth is cheap and plentiful; he's not holding his breath. In the meantime, he devours smartphone news and tries to sort out the juicy bitsRead more about Stephen Schenck!