Meltdown and Spectre. Oh My!
Fri, 05 Jan 2018

There have been a lot of new terms floating around the internet these last few days: Meltdown, Spectre, etc... What does it all mean? In this post, I will explain the high-level pieces, what systems are affected by this, and what you can do to better protect yourself against it.

Android 7 Cellular MiTM
Tue, 24 Oct 2017

Performing security assessments of complex systems sometimes requires some technical gymnastics to "man-in-the-middle" (MITM) communications between components. MITM techniques are essential for observing and manipulating communications in ways that a developer may not have anticipated. As system defenses improve the task of setting up a MITM environment for a system …

MiTM using Golang, meet Timmy
Tue, 08 Nov 2016

This post is an introduction to Timmy (Tiny evil man in the middle). There are a lot of MiTM tools used to assess software that communicates via TCP/IP. They all have a few basic ingredients, but often differ stylistically or in their intended use cases. Burp can do invisible …

Wear's the MITM?
Wed, 19 Oct 2016

Recently, we needed to man-in-the-middle TLS traffic coming from an Android Wear application. On a regular Android app, this would be an easy thing to do, but we started to run into trouble pretty quickly on the only Android watch that we had at our disposal, the 1st generation LG …

pin2pwn: How to Root an Embedded Linux Box with a Sewing Needle
Sat, 06 Aug 2016

One of the most critical issues that we look for when we assess an embedded/IoT device is secrets that are shared across the device population. Usually, finding these secrets involves gaining full access to our own device in order to find out how other devices may be affected. For example, an LTE router may have a service account hard-coded into its firmware to allow for remote support. If we can recover the account credentials and method of access, we can "service" any device that is accessible to us. This post is about one of the methods we use to ...

Welcome to IooT: Innovations on old Technology
Sat, 07 Nov 2015

Carve has been researching security trends in the IoT space for the last two years. The results are sobering.

IoT Hacking: Peeking in IPSEC tunnels with Wireshark
Fri, 30 Oct 2015

IPSEC locked the door? Use xt_TEE to inspect IPSEC traffic before encryption.

Patching BL/BLX instructions in ARM
Thu, 15 Oct 2015

Have you ever found yourself wanting to patch an ARM binary to change a BL instruction? If so, read on!