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  • Book Overview & Buying Learning iOS Penetration Testing
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Learning iOS Penetration Testing

Learning iOS Penetration Testing

By : Yermalkar
4.2 (12)
Buy this Book
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Learning iOS Penetration Testing

Learning iOS Penetration Testing

4.2 (12)
By: Yermalkar
Buy this Book

Overview of this book

iOS has become one of the most popular mobile operating systems with more than 1.4 million apps available in the iOS App Store. Some security weaknesses in any of these applications or on the system could mean that an attacker can get access to the device and retrieve sensitive information. This book will show you how to conduct a wide range of penetration tests on iOS devices to uncover vulnerabilities and strengthen the system from attacks. Learning iOS Penetration Testing discusses the common vulnerabilities and security-related shortcomings in an iOS application and operating system, and will teach you to conduct static and dynamic analysis of iOS applications. This practical guide will help you uncover vulnerabilities in iOS phones and applications. We begin with basics of iOS security and dig deep to learn about traffic analysis, code analysis, and various other techniques. Later, we discuss the various utilities, and the process of reversing and auditing.
Table of Contents (11 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Introducing iOS Application Security
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1. Introducing iOS Application Security
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Basics of iOS and application development
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Developing your first iOS app
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Running apps on iDevice
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iOS MVC design
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iOS security model
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iOS secure boot chain
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iOS application signing
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iOS application sandboxing
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OWASP Top 10 Mobile Risks
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Summary
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2. Setting up Lab for iOS App Pentesting
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2. Setting up Lab for iOS App Pentesting
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Need for jailbreaking
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Jailbreaking iDevice
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Connecting with iDevice
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Installing utilities on iDevice
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Installing apps on iDevice
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Pentesting using iOS Simulator
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Summary
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3. Identifying the Flaws in Local Storage
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3. Identifying the Flaws in Local Storage
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Introduction to insecure data storage
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Installing third-party applications
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Insecure data in the plist files
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Insecure storage in the NSUserDefaults class
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Insecure storage in SQLite database
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SQL injection in iOS applications
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Insecure storage in Core Data
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Insecure storage in keychain
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Summary
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4. Traffic Analysis for iOS Application
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4. Traffic Analysis for iOS Application
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Intercepting traffic over HTTP
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Intercepting traffic over HTTPS
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Intercepting traffic of iOS Simulator
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Web API attack demo
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Bypassing SSL pinning
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Summary
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5. Sealing up Side Channel Data Leakage
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5. Sealing up Side Channel Data Leakage
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Data leakage via application screenshot
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Pasteboard leaking sensitive information
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Device logs leaking application sensitive data
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Keyboard cache capturing sensitive data
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Summary
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6. Analyzing iOS Binary Protections
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6. Analyzing iOS Binary Protections
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Decrypting unsigned iOS applications
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Decrypting signed iOS applications
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Analyzing code by reverse engineering
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Analyzing iOS binary
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Hardening binary against reverse engineering
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Summary
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7. The iOS App Dynamic Analysis
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7. The iOS App Dynamic Analysis
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Understanding Objective-C runtime
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Dynamic analysis using Cycript
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Runtime analysis using Snoop-it
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Dynamic analysis on iOS Simulator
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Summary
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8. iOS Exploitation
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8. iOS Exploitation
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Setting up exploitation lab
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Shell bind TCP for iOS
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Shell reverse TCP for iOS
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Creating iOS backdoor
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Converting iDevice to a pentesting device
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Summary
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9. Introducing iOS Forensics
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9. Introducing iOS Forensics
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Basics of iOS forensics
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The iPhone hardware
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The iOS filesystem
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Physical acquisition
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Data backup acquisition
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iOS forensics tools walkthrough
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Summary
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Index
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Index

iOS MVC design

While creating Xcode project, you must have observed different files, such as storyboard, controller, and so on as shown in following screenshot. The iOS applications are based on the Model-View-Controller (MVC) design. This concept is really useful while performing dynamic analysis of an iOS application:

iOS MVC design

Following is a high-level diagram of the MVC design. It mainly has three components such as Model, View, and Controller. View and Model always communicate via Controller.

iOS MVC design

Let's take a sample application as shown in the following that takes user input as password, checks with the backend value, and displays whether the password is correct or incorrect.

  • View: View displays the information that is contained in the Model. The UIkit framework contains classes to draw typical interface elements such as tables (lists), buttons, textfields, sliders, and so on.

    Remember, View and Model do not communicate directly, they work via Controller. The following is the UI part of application that is nothing but View of application:

    iOS MVC design
  • Model: Model contains the data. The Model objects obtain the data either from a database or the files that could be located locally or externally. The data can be obtained from hardcoded values or web services. Model also represents the logic that manipulates and processes the data, as follows:
    NSString *password =
[NSStringstringWithFormat:@"secret_password"];

    Here secret_password is hardcoded value that is nothing but Model.

  • Controller: It acts as a mediator between Model and View. Now, here Enter Password is an action. So, whenever the user enters the password from View and hits enter, the request goes to Controller that checks the data in Model and if the password does not match, it informs the Controller and then Controller notifies it to View. Controller asks Model to validate the user password and once it gets the response from Model, it will notify the View whether the user has entered the correct password or not. Hence, View shows the Incorrect Password message, as shown in the following screenshot:
    iOS MVC design

    Now, if the data entered in View matches with the data in Model, then the message will be displayed as follows:

    iOS MVC design

So, if you have observed, all communication happens through Controller. Now you are proficient with some basics about iOS developments. Let's study iOS security concepts from basics.

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Learning iOS Penetration Testing
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