Mobile-Security

On most unrooted, stock, Android phones, enabling tethering will run a “Provisioning Check” with your wireless provider to ensure that your data plan allows tethering. This post documents Tethr, a way to bypass the provisioning check on Android devices prior to version 7.1.2. After discovering this method I reported it to the Android bug bounty fixing the issue and receiving CVE-2017-0554. Background The ability to tether is controlled by your device’s build.prop file, usually located at /system/build.prop. The default is to require the provisioning check before enabling tethering, but it can by bypassed by adding the following line: ...

A while ago I wondered how well modern cellphones could handle a flood of text messages. So I created a simple python program to test just that. The program works by sending emails to a SMS Gateway which will forward the message to the phone in the form of a text message. I tested my program on two devices, my modern HTC Incredible running Android and my aging LG Chocolate dumb-phone. The results where surprising! After starting the program my HTC Incredible froze after receiving the first 20 messages. A battery pull was required to get it to respond. The second it finished booting it froze again! I was only able to make it respond by stopping my program and rebooting the phone. After it boot it froze again while catching up on all the messages that where sent. ...

Have you ever wanted to give a friend access to a wireless network you are on but don’t want to go find the key? WIFI Key Recovery will find the key on your device and allow you to share it via a message or QR Code. Additionally WIFI Key Recovery will allow you to backup/restore your current WIFI configuration to your SD card! If this app does not work on your rooted phone email me I will try to add support. ...