FirefoxOS Hacking Part 1

Just when I though I had to clone back my blog and set it up again, it so happened that I have a backup on my PC. Yey! I can write a blog post! This time, it's a quick guide on setting up a FirefoxOS phone for hacking. For this post, I'll be on Windows and the victim is a Cherry Mobile Ace. So hang tight, this will be a quickie!


Setting up

Prepping Your Device

  • Disable sleep via Settings -> Display -> Screen timeout
  • Disable screen lock via Settings -> Screen lock -> Lock screen
  • In Settings -> Device Information -> More Information -> Developer Settings
    • Check "Developer Menu"
    • Set "Remote Debugging" to "ADB and Devtools"
    • Check "Console enabled"

Connecting Your Device

  • Plug in your device.
  • Press WIN + R and type cmd.
  • In the cmd, type adb devices. If your device was detected by your PC, the result should be:

    List of devices attached
    xxxxxxxx        device
    
  • Open Firefox Aurora, and press SHIFT+F8 to open WebIDE

  • On WebIDE is a dropdown labelled as "Select Runtime". Click and select your phone from the list.

Creating Your First App

  • On the top left of WebIDE, go to Project -> New App.
  • Select the "Hello World App" and enter a project name.
  • Select a save location for the project.
  • Once done, you'll be presented with an IDE with files on the sidebar, and an editor.

Development Workflow

  • To run the app, just click on the "Play" button (sidewards triangle icon) on top.
  • While running, clicking on the wrench will open the very familiar Firefox Dev Tools.
  • Clicking the "Stop" (the square icon) will kill the app.

Why Another Blog Post?

Originally there was this blog post which was the only guide I found. It was misleading at first, thinking that it was just a review of the phone. At the bottom of the post was a link to the driver and setup information. Unfortunately, the driver won't install on Windows 8. I once VM'ed the setup on XP but this wasn't a healthy routine, both for development and my machine.

Up next...

Making the phone do some intensive stuff. Spoiler: I won't be rooting the devices or modifying the ROM (though I'm really itching to do so). This is so that I'm sure it would work on the devices out of the box.

firefox os mobile open source

© Joseph Descalzota