angr

angr is a platform-agnostic binary analysis framework developed by the Computer Security Lab at UC Santa Barbara and their associated CTF team, Shellphish.

What?

angr is a suite of python libraries that let you load a binary and do a lot of cool things to it:

• Disassembly and intermediate-representation lifting
• Program instrumentation
• Symbolic execution
• Control-flow analysis
• Data-dependency analysis
• Value-set analysis (VSA)

The most common angr operation is loading a binary: p = angr.Project('/bin/bash') If you do this in IPython, you can use tab-autocomplete to browse the top-level-accessible methods and their docstrings.

The short version of "how to install angr" is mkvirtualenv angr && pip install angr.

Example

angr does a lot of binary analysis stuff. To get you started, here's a simple example of using symbolic execution to get a flag in a CTF challenge.

import angr

project = angr.Project("angr-doc/examples/defcamp_r100/r100", auto_load_libs=False)

@project.hook(0x400844)
def print_flag(state):
    print "FLAG SHOULD BE:", state.posix.dump_fd(0)
    project.terminate_execution()

project.execute()

Quick Start

• Install Instructions
• Documentation as HTML and as a Github repository
• Dive right in: top-level-accessible methods
• Examples using angr to solve CTF challenges.
• API Reference