Tag Archives: google play

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Steps Toward Weaponizing the Android Platform

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(4/16/2015) – NOTE: THIS SOLUTION HAS BEEN KIND OF SUPERSEDED BY https://www.kali.org/kali-linux-nethunter/ , if nethunter doesn’t work for you then continue on with this post:

The mobile and tablet market have been flooded by millions upon millions of Android based devices. I wonder if Ken Thompson or Dennis Ritchie would have ever imagined that their invention from nearly 44 years ago would have influenced the likes of the Linux kernel,  Google, Apple, and beyond. We are now in a sea of Unix-like devices that now can easily fit in individuals pockets, which have multiple core processing power and can easily access SCADA systems with a few keystrokes.  It has never been a better time for pocket sized penetration testing devices.

In this article I will be covering ways that one can turn their Android based device into a powerful pocket sized penetration testing tool. If you’re looking to do wireless sniffing or packet injection with your Android based device, this article will be of little help. (If interested please see this, this, this, this, and this.) To do so, one needs a specific Android device that supports OTG, with a custom ROM, and you’ll most likely need an external USB wireless adapter. (Honestly, if you’re looking for a device for cracking WEP keys without any external USB wireless adapters, then I highly still recommend the Nokia N900.)

(NOTE: If you’re strictly looking to do wireless sniffing,  there is AndroidPCAP which I have tested with my Nexus 7 and a RTL8187 based wireless USB adapter.)

Firstly, before progressing on towards the weaponizing of your Android device, please take the time to back up any vital information. Have a look at this.  Reason being, is that you’ll need to root your Android based device. Depending on your device and the method of rooting, rooting your device and unlocking the bootloader can wipe your device.

Setting up Kali Linux ARM Chroot on your rooted Android based device that has about 6GB of free space

1.) Install BusyBox
2.) Install Terminal Emulator
3.) I created a Kali Linux ARM IMG that one can easily mount and it can be downloaded here:
http://goo.gl/qmGle
https://archive.org/details/Kali.nogui.armel.zitstif.chroot.482013

kali.nogui.armel.zitstif.chroot.482013.7z

md5: d60c5a52bcea35834daecb860bd8a5c7
sha1: f62c2633d214de9edad1842c9209f443bcea385d

kali.img

MD5: be61799f8eb2d98ff8874daaf572a1d5
SHA-1: f9c6a820349530350bbb902d17ae6b4a5173937c

NOTE: This image gives you about 2GB of free space in the environment to play with so use with care.

4.) Extract the 7z file and make sure that there’s a folder in this following location: /sdcard/kali
5.) In this folder you should have shell script named ‘kali’ and the ‘kali.img’ image file.
6.) To mount the kali.img file as root do this: sh /sdcard/kali/kali

Optional: If you want Terminal Emulator to open up and go directly to the chroot environment do as follows:
1.) Open up Terminal Emulator
2.) Go to preferences
3.) Tap on Initial Command
4.) Enter this: su -c “cd /sdcard/kali && sh kali”

Now if you tap on Terminal Emulator, you’ll go directly to your Kali chroot environment. If you want to leave the environment and back to the Android command line, simply type exit.

Optional: If you want to access files from /sdcard/ from your Kali chroot envrionment, one way is to have an Openssh server on your Android device that listens on all interfaces. Then under your chroot envrionment do: mkdir /media/sdcard/ and then connect to your ssh server on your loopback interface to store the ssh key. Then you could use a script like this in your chroot environment (or even edit your .bashrc file to run it automatically):

http://zitstif.no-ip.org/mountsdcard.py #You’ll need to edit the username and password appropriately for your situation.

I should warn you that this Kali image is not setup with the idea of using a window manager or really any GUI tools. In my humble opinion to take advantage of Kali Linux, you don’t need a GUI. Using the terminal to access tools like nmap, netcat, w3af_console, sqlmap, xsser, and metasploit will be sufficient to get one started on their penetration test.

Once you’re in the Kali Linux chroot environment, please do the following:

apt-get update && apt-get upgrade && msfupdate

In addition to setting up the Kali Linux chroot environment, here are a list of other tools and a quick description of each that I recommend you to install:

2X Client – Remote desktop client
AndFTP – ftp/sftp client
androidVNC – vnc viewer client
AndSMB – Android Samba client
AnyTAG NFC Launcher – Automate your phone by scanning NFC tags
APG – OpenGPG for Android
CardTest –  Test your NFC enabled credit cards
Checksum –  basically a GUI tool for md5sum and shasum tools
ConnectBot – powerful ssh client
DNS Lookup – perform DNS and WHOIS lookups
Dolphin Browser – a browser that easily allows you to change your UserAgent
DroidSQLi – automated MySQL injection tool
dSploit – Android Network Penetration Suite
Electronic Pickpocket –  wirelessly read NFC enabled cards
Exif Viewer – shows exif data from photos and can remove this information
Fast notepad – simple but useful notepad application
Find My Router’s Password – title explains it all (mostly for default passwords)
Fing – very similar to Look@LAN tool for Windows
Goomanager –  see link for more information
Hacker’s Keyboard –  Miss the easily accessible CTRL key? This app is for you
HashPass – translate text into hashes
Hex Editor –  a very usable hex editor for Android
inSSIDer – wireless network scanner
intercepter-NG – multi-function network tool, sniffer, cookie intercepter, arp poisoner
IP info Detective – find out all sorts of info on an IP address
IP Webcam – turn your Android device into an IP security camera
Network Signal Info – basically a graphical tool for iwconfig
NFC Reader – used for reading various NFC technologies including some keycards
NFC ReTAG – Re-use/recycle write protected NFC Tags such as hotel key-cards, access badges, etc
NFC TagInfo -another NFC reader
OpenVPN Connect – open vpn client
Orbot – tor on Android
Packet Injection – poorman’s GUI version of scapy
ProxyDroid – use your socks5 proxy with this application
Root Browser – great file manager for Android
Routerpwn – test how secure your router is
SandroProxy – kind of like Webscarab
Secret Letter – a  poorman’s stegonagraphy tool
SSHDroid – openssh server for android
Supersu – manage what programs access root functions
Teamviewer – remotely control Windows, OSX, and Linux based systems
Terminal Emulator – no explanation needed
tPacketCapture – packet sniffer that doesn’t require root
VirusTotal Uploader – test your malicious payloads
Voodoo OTA RootKeeper – maintain root access even after updates
Wifi File Transfer – access files on your phone from a web browser via an http server
WifiFinder – simple wireless scanner
WiGLE Wifi wardriving – wardriving/warwalking application

Of course this is probably not complete, but I believe this is a very good suite of tools to get one started. If you can think of any more tools or if you have any suggestions, please feel free to leave a comment below.

Posts

Weaponizing the Nokia N900 – Part 4.0 – A Three Year Anniversary!

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“Remember that the most valuable antiques are dear old friends.” H. Jackson Brown, Jr.

I felt that this was an appropriate quote for my aging Nokia N900. What should I do with this phone? Should I throw it in the “Electronic Wasteland” in China and should I become just another Android user? Hell, I can even run Backtrack 5 on Android now! There are even reports that hackers have been able to get monitor mode and packet injection to work on Android devices!

However, what if I want to run a wide array of Linux based programs locally using my phone’s operating system without depending upon a chroot environment? What if I want a phone/device that has been known to be able to do packet injection, monitor mode, hostmode and not have to sign up for any large corporation’s software market like “Google Play” or Apple’s “App Store” to install software? Maybe I just want to use apt-get to install my programs for Christ’s sake! What if I just want to whip a device out of my pocket that I can quickly run mtr from to troubleshoot a client’s wireless network issues?

It is also nice to have a phone/device that has a physical keyboard versus a touch screen since in my humble opinion, I believe that touchscreen devices are meant for consuming than being productive.

I still believe the best phone for hackers is the Nokia N900 and it is a shame that Nokia decided to go the way of Microsoft. I personally believe that Nokia should have gone the route of an Android/Linux hybrid mobile operating system, but that’s just my opinion. We will have to see how well the Firefox OS or the Sailfish OS take off.

Android is a great mobile operating system but to me it is kind of a bastard version of the Linux operating system. Another problem with the Android platform is the sheer vast amount of different hardware manufactures there are. So by the time independent developers are able to get features like monitor mode working on one phone, chances are there are a dozen of other phones that have been released while the phone that the developers were able to get monitor mode working on will be given hardly much credence to.

Part of the beauty of the Nokia N900 is that it has ‘staying power’. This phone was released over 3 years go to this date. I still receive e-mails asking for support or giving me compliments on my work for the N900 which I appreciate dearly. There still is an active, smart and driven community around the world who develop applications and provide support for this phone, which I am very thankful for.

So what am I to do with this beloved device? A device that can be overclocked to 1.0GHZ, can run the OSX , can run Backtrack 5, do myriad of other tasks and is available for about $200.

Sadly, my Nokia N900 will no longer be used as a phone but as an MP3/Multimedia player that I can use for penetration testing! With about 32GB of internal storage and a MicroSD slot that can be use to extend the storage of the N900 from 32GB to 48GB, DLNA client/server support, a FM Transmitter, and Pandora client support, why would I want to shell out the extra cash for a new MP3 player that most likely won’t be able to run Metasploit locally and an OpenSSH Server?

This is why for the three year anniversary of the Nokia N900, I have written a bash shell script that helps automate weaponizing the Nokia N900 to save myself and I’m hoping many other individuals time for weaponizing the Nokia N900.

Before you download and run the this shell script, please read the following:

Firstly, I am not responsible if this program bricks/damages your N900 (but I can assure you as long as you follow my instructions you SHOULD be safe). For best results make sure you have flashed your N900 firmware to version pr1.3 (also for best results my shell script works BEST on freshly flashed N900s). I was not able to get my shell script to work properly with the pr1.2 firmware.

Plug your wall charger into your N900. Make sure you also have strong signal strength to your wireless network.

Once you have your N900 flashed, please root your N900 and install bash4. Then pull up the terminal on your N900 and as root do this:

ln -s /bin/bash4 /bin/bash

Next download this following script to your N900:

http://zitstif.no-ip.org/weaponizen900.tar

(sha1sum: c3699aea31c8ac91684e89bfdda7901bcc7f042e  weaponzenizen900.tar)

(Source code for main script is publicly viewable here: http://pastebin.com/4UXmAEQx )

Extract it via:

tar -xvf weaponizen900.tar

Then cd into the newly created folder called “n900project” and run as root:

bash weapoinzen900.sh

MAKE SURE TO FOLLOW AND PAY CLOSE ATTENTION TO ALL THE PROMPTS FROM THIS PROGRAM! Installation typically for me took about 2 hours. If your Internet connection drops out for whatever reason, for the most part it is safe to run this program again!

For a list of tools that weaponizen900.sh installs for native use, please see this: http://zitstif.no-ip.org/listweapons.txt. You can also list the installed tools by typing on your N900 ‘listweapons’. It also installs this following kernel: http://talk.maemo.org/showthread.php?t=85665. With this kernel you can do monitor mode, packet injection, and hostmode with the N900. With hostmode on the Nokia N900, you can use an OTG cable and do forensics with your N900 with tools like testdisk!

PLEASE DO NOT USE THE GUI TO UPDATE YOUR N900! Do this at your own risk! TO SAFELY UPDATE YOUR N900 PLEASE USE A SCRIPT I CREATED CALLED “update”. To update programs that have been installed by your package manager run as root:

update modded

To update programs that have been installed by your package manager and programs like Metasploit, SET, Nikto, and etc run as root:

update modded scripts

I hope this script is of great use to anyone who decides to use it. If you have any issues with this program or need any help with this program feel free to contact me via e-mail. I want to thank the Maemo forums for support on this project.