1

ANDROID AND IOS CRACKINGTWO POPULAR OS

2‘IOS’ VS ‘ANDROID’

Development Platform

Android OS:

open platform, allowing the use of 3rd party tools

Key to OS success

can reach core components

iOS:

Restrictive guidelines

Fixed set of tools, nothing outside, nothing deep

No Flash!

Multitasking Abilities

Android OS:

Very versatile dynamic

Highly fragmented challenging

In USA: 80 Android models vs. 9 iOS models

Poor battery performance

Best notification system (e.g. emails)

iOS:

Stable and exclusive platform

Fixed set of tools, with clear potential and boundaries easier

IOS AND ANDROID

IOS IOS comprises the operating system

and technologies that you use to run applications natively on devices , such as ipad, iphone and ipod touch.

IOS even ensures that performance and battery space life don’t suffer even if you are multitasking.

IOS Software Specs

Programmed in :C, C++, Objective-C

OS family :OS X, UNIX

Initial release :June 29,2007

Kernel type :Hybrid (XNU)

Default user :Cocoa touch

interface (multi-touch,GUI)

Devices

IOS ARCHITECTURE

At the highest level, iOS acts as an intermediary between the underlying hardware and the apps that appear on the screen. The apps you create rarely talk to the underlying hardware directly. Instead, apps communicate with the hardware through a set of well-defined system interfaces that protect your app from hardware changes.

The Kernel in IOS is based on same variant of the basic mach Kernel that is found in MAC OSX

IOS Layers

In IOS, there are four abstraction layers:-

ANDROID

Android is a Linux based Operating System.

Android is open source and Google releases the code under the Apache License.

This open source code and permissive licensing allows the software to be freely modified and distributed by device manufacturers, wireless carriers and enthusiast developers.

ANDROID Specs

Programmed in :C, C++, JAVA

OS Family :UNIX-LIKE

Initial release :September 23,2008

Kernel type :Monolithic (Modified

Linux Kernel)

ANDROID Versions

Rooting Android

What is Rooting?

• Rooting allows a user to gain administrative access or root access.

• By default phones do not allow users root access because the average consumer will not need it. You are not average consumers.

• Root access allows you to overclock/underclock the CPU, install/uninstall whatever apps you want. Install custom ROMs.

ANDROID: Roms and Rooting

• Read-only memory (ROM) is a class of storage medium used in computers and other electronic devices. Data stored in ROM cannot be modified, or can be modified only slowly or with difficulty, so it is mainly used to distribute firmware (software that is very closely tied to specific hardware, and unlikely to need frequent updates).

• When people talk about ROM's on their phone they're talking about ROM images

Benefits to Rooting

• Custom ROMS

Stock ROM is based on the OS the phone is shipped with

AOSP (Android Open Source Project) ROMs are based off the source code released by Google and are typically "vanilla" Android experience (No fancy UI like HTC Sense or Motoblur)

• Enhanced performanceo e.g ext3 vs ext4

• Overclocking 

• Unlocking features

Side Effects of Rooting

• Flashing will void your warranty!

• It's possible to "brick" your phone!

o When used in reference to consumer electronics, "brick" describes a device that cannot function in any capacity (such as a device with damaged firmware) OTA updates can break root or brick the phone.

• Read ALL the instructions first and multiple times if need be.

How to Root :

1. Before doing anything - Make a backup! 

1. SMS, call logs text messages etc. can be erased so don't take chances!

2. Every device is different but the basic premise is you need to

• unlock bootloader

• flash a custom recovery which will allow you to

• install Superuser APK

3. Before flashing a new ROM, make a backup of your current ROM.

1. If anything goes wrong you'll be able to reflash a ROM you know works.

IOS: Jailbreak

• One of the main reasons for jailbreaking is to

expand the feature set limited by Apple and its App Store and get paid apps for free.

•  Users install these programs for purposes including personalization and customization of the interface, adding desired features and fixing annoyances,and making development work easier.

Jailbreak Process

• Jailbreak itself is getting control over the root and media partition of your iDevice; where all the iOS’s files are stored at.

• To do so /private/etc/fstab must be patched.

• fstab is the switch room of your iDevice, controlling the permission of the root and media partition. The default is ‘read-only’, allowing eyes and no hands.

• The main problem is not getting the files in, but getting them trough various checkpoints. These checkpoints were put by Apple to verify if the file is indeed legit, or a third-party.

Chain Of Trust

Runs Bootrom: “SecureROM”

Runs Bootloader

Loads Kernel

Loads iOS

patch the checks or simply bypass

Exploit categories

Bootrom exploit: Exploit done during the bootrom. It can’t be patched by conventional firmware update, and must be patched by new hardware.

• the malicious code is injected before everything

Userland exploit: Exploit done during or after the kernel has loaded and can easily be patched by Apple with a software update.

• injects the malicious code directly into the openings back into the kernel

Types Of Jailbreak

• Tethered:

With a tethered jailbreak, if the device starts back up on its own, it will no longer have a patched kernel, and it may get stuck in a partially started state.

• Untethered:

An untethered jailbreak has the property that if the user turns the device off and back on, the device will start up completely.

Cydia

Developed by Jay Freeman (also called "saurik") and his company, SaurikIT.

Cydia is a graphical front end to Advanced Packaging Tool (APT) and the dpkg package management system, which means packages available in Cydia are provided by a decentralized system of repositories (also called sources) that list these packages.

Cydia tweaks

1. Byta Font

2. SB Settings

3. Barrel

4. Zephyr

5. Call Bar

6. Activator

7. Swipe Selection

8. Bigify+

9. Springtomize

10.Bite SMS

Hackintosh

System requirements:

-Processor: Intel Core 2 Duo, Core 2 Quad, Core i3, Core i5, Core i7 

-Motherboard: Intel chipset with AHCI enabled

-At least 2GB of memory (4GB or more strongly recommended).

-Most Nvidia 8xxx 9xxx 2xx 3xx 4xx 5xx 6xx graphics cards

-Most ATI HD 5xxx/6xxx series graphics cards

-HD3000/HD4000 Integrated Graphics

-USB Keyboard and Mouse. (Apple keyboard recommended)

-At least 40GB of internal hard disk space attached to Intel SATA controller running in AHCI mode.

How to:

Create a bootable pendrive from a mackintosh computer or from a virtual machine with OSX 10.7 or 10.8 with MYHACK

We should format the pendrive with HFS+ and MBR or GPT partition table

Then install the OS on pendrive with MYHACK

Some BIOS settings should be altered for the OS to run its bootloader ( Chameleon )

Then install it on the HFS+ partition created on HDD

To install drivers we have to install KEXTS for the specific hardware devise to work

Thank You

Bharat VeduruparthyNithin Kumar