Kindle 3.X updater for Kindle 2 and Kindle DX released

After a month and a half of testing thanks to the community of MobileRead, I can finally release the first stable version of the Kindle 3.X software updater (help me come up with a better name, please). If you haven’t read my last few Kindle-related posts (read them if you want more technical details of this script), you should know that this allows you to use all the cool new features of the Kindle 3 on a K2 or DX device. Installation is easy and is only three steps: 1) Use “prepare-kindle” script on old Kindle to back up and flash recovery kernel, 2) Copy generated files to Kindle 3 along with “create-updater” script and run it, 3) Copy generated update package back to old Kindle and restart. If that sounds confusing, don’t worry, the readme contains very detailed directions and even how to recover in case anything goes wrong. Speaking of recovery, a “side effect” of using this is that the custom kernel that you flash in order to run the update package allows recovering without a serial cable and the installation of unsigned recovery packages. Continue reading

Kindle 3.1 Jailbreak

I was bored one weekend and decided to jailbreak the new Kindle firmware. It was time consuming to find bugs, but not difficult. Unlike the iPhone, the Kindle doesn’t really have security. They have a verified FS and signed updates and that’s it, but I will still call my jailbreak an “exploit” just to piss you off. Previous Kindle 3 jailbreaks worked (AFAIK, I haven’t really looked into it) by tricking the Kindle into running a custom script by redirecting a signed script using a syslink. This worked because the updater scans only “files” that do not end with “.sig” (signature files to validate the file). They fixed this now by scanning all non-directorys that do no end with “.sig”. This is the first bug I’ve exploited. Part one is getting the files into the update, which I did by¬†conventionally¬†renaming them to “.sig” even though they’re not signature files. Part two is harder, getting the unsigned script to run. Continue reading

Google Apps User Registration Script

Here’s another one of my famous 3-hour-projects. I finally decided to cleanup my email. It’s too hard to “clean”, so I decided to start from scratch by making a new email account. So, I made a Google Apps account. Google Apps is a great product, but one thing missing is registration for users. (You must make an account manually for your user) So, I decided to make one myself. This PHP script acts as a proxy between you and Google Apps. It allows your users to create their own account with you and your Google Apps. It is composed of a backend and a frontend. The backend does the work of taking your admin credentials and form data from a user and creating an account for the user. The frontend hosts the GUI. I made sure to well-comment the code, so it should be easy to create your own frontend to match the style and code of your site. I’m probity won’t work on this project again, but because it’s released under GNU v3 (as all my projects), you can take it and add on to it.

Google Apps User Registration Script