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Learning Android Forensics

By : Oleg Skulkin, Tindall, Rohit Tamma

2 (2)

Learning Android Forensics

2 (2)

By: Oleg Skulkin, Tindall, Rohit Tamma

Overview of this book

Many forensic examiners rely on commercial, push-button tools to retrieve and analyze data, even though there is no tool that does either of these jobs perfectly. Learning Android Forensics will introduce you to the most up-to-date Android platform and its architecture, and provide a high-level overview of what Android forensics entails. You will understand how data is stored on Android devices and how to set up a digital forensic examination environment. As you make your way through the chapters, you will work through various physical and logical techniques to extract data from devices in order to obtain forensic evidence. You will also learn how to recover deleted data and forensically analyze application data with the help of various open source and commercial tools. In the concluding chapters, you will explore malware analysis so that you’ll be able to investigate cybersecurity incidents involving Android malware. By the end of this book, you will have a complete understanding of the Android forensic process, you will have explored open source and commercial forensic tools, and will have basic skills of Android malware identification and analysis.

Preface

Preface

Who this book is for

What this book covers

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Free Chapter

Introducing Android Forensics

Introducing Android Forensics

Mobile forensics

The mobile forensics approach

Challenges in mobile forensics

Android architecture

Android security

Android hardware components

Android boot process

Summary

Setting up the Android Forensic Environment

Setting up the Android Forensic Environment

Android forensic setup

Android Debug Bridge

Rooting Android

Summary

Understanding Data Storage on Android Devices

Understanding Data Storage on Android Devices

Android partition layout

Android file hierarchy

Application data storage on the device

Android filesystem overview

Summary

Extracting Data Logically from Android Devices

Extracting Data Logically from Android Devices

Logical extraction overview

Manual ADB data extraction

ADB backup extractions

ADB dumpsys

Bypassing Android lock screens

Android SIM card extractions

Summary

Extracting Data Physically from Android Devices

Extracting Data Physically from Android Devices

Physical extraction overview

Extracting data physically with dd

Extracting data physically with nanddump

Extracting data physically with Magnet ACQUIRE

Analyzing a full physical image

Imaging and analyzing Android RAM

Acquiring Android SD cards

Advanced forensic methods

Summary

Recovering Deleted Data from an Android Device

Recovering Deleted Data from an Android Device

Data recovery overview

Recovering deleted data from SD cards

Recovering deleted records from SQLite databases

Recovering deleted data from internal memory

Recovering deleted data using file carving

Summary

Forensic Analysis of Android Applications

Forensic Analysis of Android Applications

Application analysis overview

Why do app analysis?

Layout of this chapter

Summary

Android Forensic Tools Overview

Android Forensic Tools Overview

Autopsy

Belkasoft Evidence Center

Magnet AXIOM

Summary

Identifying Android Malware

Identifying Android Malware

An introduction to Android malware

Android malware overview

Android malware identification

Summary

Android Malware Analysis

Android Malware Analysis

Dynamic analysis of malicious Android applications

Static analysis of malicious Android applications

Summary

Further reading

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Acquiring Android SD cards

As discussed previously in this chapter and in previous chapters, the SD card can refer to a physical, external SD card or a partition within the flash memory. A removable external SD card can be imaged separately from the device through a write-blocker with typical computer forensics tools, or using the dd/nanddump techniques shown previously, although the former is usually faster due to not needing to write data over netcat.

Physically imaging an SD card is extremely similar to the physical imaging that we discussed previously; in fact, if the SD card is symbolically linked to the /data partition, it would be acquired as part of the /data partition, as seen in the Autopsy section's screenshots. The only difference in the process is that if the SD card is being imaged, the output file cannot be written to the SD card! This means that using the...

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