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Home / Tips and Tricks / How To Turn A Android Phone Into A Hacking Device Without Root «Null Byte: WonderHowTo

How To Turn A Android Phone Into A Hacking Device Without Root «Null Byte: WonderHowTo



With just a few taps, in Android phone can be weaponized into a coded hacking device capable of running tools such as Nmap, Nikto, and Netcat – all without rooting the device.

UserLnd, created by UserLAnd Technologies, is an Android app that makes installing Linux distributions quick and effortless, without any rooting. With this, it's possible to run an ARM64 Debian operating system alongside the current Android OS. Sometimes referred to as "AARCH64," this ARM architecture is the same used by the Kali Linux Raspberry Pi ARM images, which makes it easy to import Kali's tool repository. And best of all, the UserAnd team recently added a dedicated Kali filesystem so importing repositories will not be necessary for all users.

All of the created filesystems are easily disposable. While many tools work without issues, UserAnd is still a new project and may cause some tools (like Nmap) to break or fail when executing certain commands. It is worth mentioning, these issues will probably be resolved in the near future. One example of this is PRoot, and open-source software that implements functionalities similar to chroot. PRoot allow you to execute programs with an alternative root directory, no root needed. Normally, a user-space application will communicate directly with the Kernel through system calls. With UserLAnd, PRoot is running in the background, interpreting these system calls, and it will perform and manipulate them when necessary to enable users and permissions in the filesystem.

We'll start by installing an SSH client, which will be the primary app for interacting with the Debian OS. Then, you go through some OS setup tips and importing the Kali Linux repository to really turn Android into a hacking device. If some readers may know, Kali Linux is based on the Debian operating system, so importing their repository will not cause anything to become unreliable.

Step 1
: Install the ConnectBot App

ConnectBot is an open-source SSH client designed for Android smartphones, which allow you to securely connect with SSH servers. This will be the primary way of interacting with the new UserLand Debian operating system. If you are using or have access to Google Play, ConnectBot is available through the F-Droid repository.

Step 2: Install the UserLAnd App

I've already covered what UserLAnd is and does above, so I won't go over anything else in detail here.

Step 3 : Create a New Filesystem

When the installation is complete, open UserLAnd, and view the "Apps" tab. Refresh the tab and wait a few minutes for the distributions to populate.

The Kali Linux OS has recently been added to the list of available distributions. Select "Kali" or "Debian" and the UserLAnd app will prompt for credentials. Create a username, password, and VNC password. The "Password" will allow access to the SSH server started when the filesystem is finished installing. The "VNC Password" is not used in this tutorial but is required to proceed with the installation.

UserLAnd will then download the necessary executables and scripts from its GitHub repository that are used to create the filesystems (shown below). The time it takes to download and extract the required assets will vary based on the Android CPU and internet connection speed. The installation process took up to 20 minutes to complete in some tests, so be patient.

In my first attempt, UserAnd returned the following "Could not extract filesystem. Something went wrong" error. Removing and reinstalling the UserAnd application seemed to resolve the issue. If this error persists, open a new GitHub issue

Step 4: Interact with the Filesystem

When the installation is complete, head to the "Sessions" tab, and select the newly created option. UserAnd will automatically attempt to open ConnectBot and ask "Are you sure you want to continue connecting?" Hack "Yes," and enter the password created in the previous step

At this point, syncing a Bluetooth keyboard to the phone will make setting up the OS easier, but not required. If you don't use a Bluetooth keyboard, I recommend installing Hacker's Keyboard from the Play Store, and you'll see why we continue.

Recommended on Amazon: FAVI Mini Bluetooth Keyboard with Laser Pointer & Backlit Keys

Step 5: Update the OS

The first thing to do after installing a new operating system on your Android phone is making sure the system is fully up to date. This can be done by first using su to create a root shell. Next, use the apt-get update && apt-get dist-upgrade command.

 distortiion @ localhost: ~ $ su
root @ localhost: / home / distortion # apt-get update && apt-get dist-upgrade
Note: 1 http://fast-web.deb.debian.org/debian stable InRelease
Get: 2 http://cdn-fastly.deb.debian.org/debian stable-updates InRelease [91.0 kB]
Hit: 3 http://cdn-fastly.deb.debian.org/debian stable Release
Get: 4 http://cdn-fastly.deb.debian.org/debian stable Release.gpg [2434 B]
Get: 5 http://cn-fastly.deb.debian.org/debian stable-updates / main arm64 Packages [5096 B]
Get: 6 http://cn-fastly.deb.debian.org/debian stable-updates / main Translation-en [4512 B]
Get: 7 http://cn-fastly.deb.debian.org/debian stable / main Translation-en [5393 B]
Get: 8 http://cn-fastly.deb.debian.org/debian stable / contrib arm64 Packages [29.9 kB]
Get: 9 http://cn-fastly.deb.debian.org/debian stable / contrib Translation-en [45.9 kB]
Get: 10 http://en.wikipedia.org/wiki/Architecture/debian stable / non-free arm64 Package
Get: 11 http://cn-fastly.deb.debian.org/debian stablenon-free Translation-en [80.6 kB]
Fetched 5714 KB in 31s (183KB / s)
Reading package lists ... Done
Reading package lists ... Done
Building dependency tree ... Done
Calculating upgrade ... Done
The following packages will be upgraded:
  tzdata
1 upgraded, 0 newly intalled, 0 to remove and 0 not upgraded.
Need to get 270 KB or archives.
After this operation, 1024 B or additional disk space will be used.
Do you want to continue? [Y/n]

In the case of the above output, there is only one package that needed updating, but this might not always be true.

Step 6: Install Essential Software

very much software by default. Below are a few packages recommended for Debian and Kali users every day. Some packages aren't required but will make it easier to follow along in future articles where Android is used as the primary hacking device.

  1. screen between several terminal sessions simultaneously. This is one of the most vital packages to install when using UserAnd. Android phones don't handle prolonged SSH sessions well and tend to break connections for no apparent reason. Such breakage can cause running commands to fail with no way of reconnecting to the session to view the progress. Use tools to maintain persistent shell sessions.
  2. net-tools – Net-tools is a suite of tools containing ifconfig, netstat, route, and several other useful networking applications.
  3. netcat – Netcat is a feature-rich UNIX utility designed to be a reliable tool for creating TCP and UDP connections. Netcat can be used to create and interact with simple macOS backdoors.
  4. neofetch – Neofetch (shown in the cover photo of this article) is a cross-platform system information gathering tool. It conveniently displays system specifications alongside the distribution logo. There's no real function for this package other than showing-off the distribution to coworkers and friends or creating cover photos for WonderHowTo. Neofetch is a little buggy with UserLAnd distros, but you may want to know how I created the cover photo, so I'm including it here.
  5. gnupg – GnuPG (sometimes referred to as gpg) is generally used for encrypting files and securing email communications. Some installer scripts (like Metasploit) use gpg in order to import their software signing keys. It is possible to manually install Metasploit without gpg, but it will make the process less complicated.
  6. wget – Like cURL, is a command line tool used to download files from the internet. Some developers prefer wget over cURL, so useful for keeping installed and available.
  7. git – Git is a popular software version and is commonly used for clone (download) GitHub projects. Git is often recommended by Null Byte users
  8. nano – Nano is a command line text editor. Nano will make editing files via SSH more convenient. If Vim or Emacs is preferred, download these text editors instead (or in addition to nano).

The above packages can be installed using the apt-get command.

 apt-get update && apt-get install net-tools netcat neofetch gnupg curl wget git nano screen 

Step 7: Import the Kali Linux Conditional Repository

If you installed the Kali OS in Step 3, this step can be skipped. For Debian OS users, importing the Kali repository into your distribution is not mandatory. However, doing so will allow for quick installations of applications such as sqlmap, Commix, Bettercap, Nikto, dnsmap, and hundreds of packages that can't be found in Debian's default repositories.

To start importing the Kali Linux repository, use nano to add Kali's repository to the /etc/apt/sources.list file.

 nano /etc/apt/sources.list

Add the below line to the bottom of the file (shown below), then use Ctrl + X exit and save the changes. ConnectBot has on-screen buttons for keys like Ctrl and Shift . You may also be interested in: [http://http.kali.org/kali-rolling] main contributor non-free

Then, add the Kali signing key using the following wget ] command

 wget -q -O - https://www.kali.org/archive-key.asc | apt-key add - 

If the command was successful, the terminal will return "OK" (shown below). Finally, update the APT cache using the apt-get update command

 root @ localhost: / home / distortion # wget -q -O - https://www.kali.org/archive- key.asc | apt-key add -
OK
root @ localhost: / home / distortion # apt-get update
Note: 1 http://fast-web.deb.debian.org/debian stable InRelease
Hit: 3 http://Rn-fastly.deb.debian.org/debian stable-updates InRelease
Hit: 4 http://cdn-fastly.deb.debian.org/debian stable Release
Ign: 2 http://ftp.halifax.rwth-aachen.de/kali kali-rolling InRelease
Get: 6 http://ftp.acc.umu.se/mirror/kali.org/kali kali-rolling Release [29.6 kB]
Get: 7 http://ftp.acc.umu.se/mirror/kali.org/kali kali-rolling Release.gpg [833 B]
Get: 8 http://ftp.acc.umu.se/mirror/kali.org/kali kali-rolling / main arm64 Packages [16.4 MB]
64% [8 Packages 9415 kB/16.4 MB 57%] 546 kB / s 13s 

More Coming Soon

With UserLAnd, turning Android's into hacking devices is easy. While Android is slower at processing data than Raspberry Pis, still making great, easily concealed offensive tool capable of running Kali software.

In upcoming articles, I'll show how to install, debug, and use popular Applications like Aircrack, Empire, Metasploit, and Nmap using only Android.

Don't Miss: Top 5 Intrusive Nmap Scripts Hackers Should Know

Cover photo and screenshots by distortion / Null Byte

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