Tutorials/Reverse engineering embedded software using Radare2

From LCA2015 Delegate wiki
Revision as of 22:07, 9 January 2015 by Andrew McDonnell (Talk | contribs)

Jump to: navigation, search

Outline

We will try and get through all the following:

  • Introduction to Radare2 reverse engineering tool
  • The Radare2 utilities
  • Basics of using the Radare2 reverse engineering to with a binary you probably have on your laptop
  • Looking at an arduino binary
  • Introduction to MIPS architecture and assembly
  • Extracting firmware images

You might like to bring your own binary to play with as well instead!

Prerequisites

If you are planning to work through the examples and try your own thing during the session, you really want to get this sorted before the event.

Minimum requirements:

  • a C compiler and libraries needed to build radare2 - the "apt-gettable" version is out of date
  • xdot for viewing callgraphs.

Various other tools may be helpful, and indeed needed (e.g. an editor) to complete some of the examples

If you are using a Debian-derived distro, for example:

   sudo apt-get install build-essential xdot eog ghex binwalk vim gedit srecord

It should be possible to build radare2 on Linux, FreeBSD/NetBSD etc, Max OS/X and Windows and possibly on Android if you try hard enough (using a Debian root, for example)

However, the tutorial examples have only been tested using Debian Wheezy.

This page described preparation for Reverse engineering embedded software using Radare2

Clone & build radare2

Note, changing to the lca2015_tutorial branch is important, because the software is under active development there could be breakage in master upstream

   git clone http://github.com/pastcompute/radare2
   cd radare2
   git checkout tutorial_branch
   ./configure
   make -j
   sudo make symstall

Note, you can install as a normal user if you need to:

   ./configure --prefix=$HOME/path/to/wherever
   make -j
   sudo make symstall
   export PATH=$HOME/path/to/wherever:$PATH

Clone the examples repository

   cd
   git clone http://github/com/pastcompute/lca2015-radare2-tutorial

Troubleshooting

The tutorial is not until Tuesday Afternoon so if you need help with the above ping me on Twitter : @pastcompute