Microsoft Word - iOSAppReverseEngineering.docx

iOSREGreetings_FILES = Tweak.xm

iOSREGreetings_FRAMEWORKS = UIKit

include $(THEOS_MAKE_PATH)/tweak.mk

after-install::

install.exec "killall - 9 SpringBoard"

The edited control looks like this:

Package: com.iosre.iosregreetings

Name: iOSREGreetings

Depends: mobilesubstrate, firmware (>= 8.0)

Version: 1.0

Architecture: iphoneos-arm

Description: Greetings from iOSRE!

Maintainer: snakeninny

Author: snakeninny

Section: Tweaks

Homepage: http://bbs.iosre.com

This tweak is rather simple. When [SpringBoard applicationDidFinishLaunching:] is called,

SpringBoard finishes launching. We hook this method, carry out the original implementation

via %orig, then display a custom UIAlertView. With this tweak, every time we relaunch

SpringBoard, a UIAlertView pops up. Can you get it?

If you’re OK with this section so far, please enter “make package install” in Terminal. When

the lock screen shows, you will see the magic as shown in figure 3-14:

Figure 3- 14 Our first tweak

Yes, with just some tiny modifications, the behaviors of Apps are changed. Now, iOS is