xiphosresearch / phuzz

Find exploitable PHP files by parameter fuzzing and function call tracing

PHP Hardening Phuzzer

It uses feedback from xdebug and strace to generate random and arbitrary input parameters to a PHP script and find code paths which lead to exploitation. Primarily it's designed to scan for vulnerabilities in PHP scripts which are web accessible but not meant to be run directly.

Features

• Detect input parameters, _GET, _POST, _REQUEST, _COOKIE and _FILES
• Generate random input parameters
• Find unique code paths
• systemcall tracing with strace and dtruss, tested on Linux & OSX
• PHP function call tracing, using Xdebug

TODO

• Make it suck less
• Analysis of collected Phuzz cases/traces, automatic exploit generation
• dtrace and systemtap support

Example

The first request is made to analyse which inputs the script uses.

[Thu Sep  8 17:36:00 2016] 127.0.0.1:36996 [200]: /rce1.php

It then generates random values for the required parameters, and finds all the PHP and system calls that.

[Thu Sep  8 17:36:00 2016] 127.0.0.1:36998 [200]: /rce1.php?cmd=SWGAGI55
<webroot>/rce1.php
	 system ( 'SWGAGI55' )

syscalls:
	 stat ( "/usr/local/sbin/SWGAGI55", 0x7ffff9f76140 )
	 stat ( "/usr/local/bin/SWGAGI55", 0x7ffff9f76140 )
	 stat ( "/usr/sbin/SWGAGI55", 0x7ffff9f76140 )
	 stat ( "/usr/bin/SWGAGI55", 0x7ffff9f76140 )
	 stat ( "/sbin/SWGAGI55", 0x7ffff9f76140 )
	 stat ( "/bin/SWGAGI55", 0x7ffff9f76140 )
	 stat ( "/usr/games/SWGAGI55", 0x7ffff9f76140 )
	 stat ( "/usr/local/games/SWGAGI55", 0x7ffff9f76140 )

Installation

Debian / Ubuntu

sudo apt-get install php5.6-cli php-xdebug
pip install -r requirements.txt

sudo sh -c 'echo 0 > /proc/sys/kernel/yama/ptrace_scope' python -mphuzz

OSX

brew install php56 php56-xdebug
pip install -r requirements.txt
python -mphuzz

Microsoft Windows (XP or above)

• Click on Start button (bottom left hand corner of screen)
• Click My Computer
• Navigate to C:\Program Files (Intel X86 Architecture)\Microsoft Internet Explorer Professional Edition 2016\
• Locate iexplore.exe, you may have to use the scroll bars
• Click on it... twice, quickly!
• Wait until new window opens up
• Find the white bar with http://worldwideweb.msn.com/en-US/infestedmalwaresmegma.exe in it
• Click the text, just once!
• Press the Ctrl and A buttons on your keyboard, together, at the same time.
• Type in www.google.com
• Wait until your computer starts responding again
• Type in Self immolation techniques for beginners
• Press the Search button
• Follow instructions until warm throughout

TL;DR any ideas on porting this to Win32 API?