Windows RT Jailbroken: Runs Unsigned Apps

By Prarthito Maity email: p.maity@mobilenapps.com | Jan 07, 2013 07:25 AM EST

Share This Story

  • Print
  • Email

Users of Android and iOS are well accustomed with rooting and jailbreaking their smartphones, respectively. Now it seems like Windows RT users will soon be joining them with their own jailbreak.

Follow us

Per reports, the Windows RT can now be jailbroken to install and run desired apps. The new jailbreak for Windows RT was brought into light by Nicaraguan security researcher clrokr, and will let interested users install unsigned, non-Windows-Store apps.

clrokr, in his attempt to jailbreak the Windows RT, managed to unlock the OS' kernel setting which prevents Windows RT devices from running unsigned code as found on desktop applications. He made use of a security vulnerability which exists in Windows 8 and, accordingly, is also present in Windows RT, and was also well aware of the fact that Microsoft already allows Remote Debuggers to attach to user processes.

"Ironically, a vulnerability in the Windows kernel that has existed for some time and got ported to ARM just like the rest of Windows made this possible. MSFT's artificial incompatibility does not work because Windows RT is not in any way reduced in functionality," clrokr wrote in his blog.

"It's a clean port, and a good one. But deep in the kernel, in a hashed and signed data section protected by UEFI's Secure Boot, lies a byte that represents the minimum signing level."

The process can be achieved by altering just a byte in the memory. The Microsoft-based platform refers to it in order to review what level of control it should enforce over permissible apps. Although, normally, Windows RT limits apps to those signed only by Microsoft, changing that value unlocks the system and allows the use of any compatible app that the users chooses.

However, it has also been stated that the hack will presumably not persist beyond a reboot, and the process of enabling also require a lot of expertise and work. Basically, someone with a sound knowledge of these things.

"clrokr argues that the discovery shows that there is no essential difference between Windows 8 and Windows RT, and that users should have the ability to run desktop apps. On the other hand he does not seem to appreciate the advantages of restricting users to metro apps in terms of security, simplicity and battery life," Microsoft-News.com states.

Get the Most Popular Mobile&Apps Stories in a Weekly Newsletter

© 2014 Mobile & Apps All rights reserved. Do not reproduce without permission.

Join Our Conversation

Smartphones
T-Mobile Samsung Gear S Samsung Gear S 3G smartwatch gets wearable-specific data plan on T-Mobile – Prices & options
‘World’s narrowest’ FHD smartphone display from LG is virtually bezel-free
Samsung Galaxy A3, Galaxy A5 break cover with full-metal unibody designs & more (VIDEO)
Droid Turbo global version launching on Nov. 5 as Moto Maxx?
Tablet / Laptop / PC
Dell Venue 7 and Venue 8 Dell unveils Venue 7 and Venue 8 Android 4.3 Jelly Bean tablets
Retina iPad Mini facing delays, may not launch until early next year
Refurbished 128GB iPad with Retina Display now available on the Apple Online Store
Samsung Galaxy Note 10.1 – 2014 Edition: Pricing and availability now official
Gadgets
Amazon Logo Amazon reportedly to launch ‘Firetube’ set-top box before 2013 holidays
Samsung Galaxy Note 3 and Galaxy Gear India launch: Pricing and availability
Samsung Galaxy Gear Android smartwatch now up for pre-order in Canada
Samsung Galaxy Gear 2 reportedly in the works already, may debut at CES or MWC 2014
OS / Software
HTC Logo HTC reportedly considering Android/Windows Phone dual-booting smartphone as Microsoft pushes for deeper Windows mobile integration
iOS 7 Chrome Incognito mode leaks private searches due to bug
Sprint HTC One Android 4.3 Jelly Bean already rolling out, AT&T, T-Mobile & Verizon to follow
Microsoft Windows 8.1 now available for pre-order
Internet / Social Media
Google Downtime Google blacks out for two minutes, causes 40 percent drop in world’s Internet traffic
Xbox Music web player is live and ready for Xbox Music Pass subscribers
Facebook Android app collected phone numbers even if users never logged in
Firefox 22 brings support for web video calls, 3D gaming, and Unreal Engine 3
What's App
Flipboard for Windows Phone Flipboard for Windows Phone finally available, but requires 1GB of RAM (VIDEO)
Vine gets major update, lets you upload previously-shot videos & more (VIDEO)
BlackBerry Messenger (BBM) finally hits Windows Phone – Available as a free download now
Instagram releases Bolt ephemeral messaging app in select markets to challenge Snapchat
Copyright © 2014 Mobile & Apps All rights reserved. mobilenapps
Real Time Analytics