KDDI Contact Transfer app provides a backdoor for homebrewers

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KDDI has a pretty neat application in Marketplace which allows users to Migrate their contacts from their non-smartphone to a Windows Phone 7 handset.

To get this level of access to the Windows Phone 7 phone book of course requires system-level access, and Nanapho.jp found the app uses the Microsoft.Phone.InteropServices.dll to achieve this.

By exploiting this, as developers on other Windows Phone 7 handsets have, developers will be able to gain wide access to the root level of Windows Phone 7, although Tezawaly notes that this does not include the registry at present.

Read more about the discovery at Nanapho.jp here.

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