Android App Cracking Tutorial #2

Essay           Tutorial's

What are the type of Restriction & Protection?

- Advertisement Banners (Google or ad-mob)

- Nag & Msg Box Pop-Up (In Trial or Free App)

- Locked Features (In the form of In-App Purchase)

- Google or Amazon License (In the form of License Verification Library-LVL)

Before we start with Tut’s Download all Target Files from here :-  Click

Tut -1

Removing of Advertisement Banners from application

DifficoltTARGET	Dual File Manager( ) NewBies (X) Intermedio ( ) Avanzato ( ) Master
DifficolMETHOD	DifficolAd Removing by Editing Layout( ) NewBies (X) Intermedio ( ) Avanzato ( ) Master
Difficoltà   DIFFICULTY	( ) NewBies (X) Intermedio ( ) Avanzato ( ) Master    (X) Newbies () Intermediate () Advanced () Master

Step-1

Start Apktool & Select “Decompile Resources” Option

Step-2

Once Decompile Process finish go to “res” a resources folder which you found inside decompile folder of app                

Eg:-Dual File Manager_src

Step-3

Now search for Layout Folder & open every XML file with the help of “Axel” app to find String  called “Banner”

(Hint :- In most of the case Banner called through “main.xml” or “Activity_main.xml”)

Step-4

Finding & Editing XML Codes with “Axel” app

As I say in this app also we find Banner related XML code in “main.xml”

Original Code:-

<com.google.android.gms.ads.AdView       

android:id="@id/main_id_ad"

android:visibility="visible"

android:layout_width="fill_parent"--------------- Set this to “0dip”

android:layout_height="wrap_content"---------- Set this to “0dip”

android:layout_alignParentBottom="true"

admob:adSize="BANNER"

admob:adUnitId="ca-app-pub-5978068561095965/7471584327" />

  

 Modify Code:-

<com.google.android.gms.ads.AdView       

android:id="@id/main_id_ad"

android:visibility="visible"

android:layout_width=“0dip”

android:layout_height=“0dip”

android:layout_alignParentBottom="true"

admob:adSize="BANNER"

admob:adUnitId="ca-app-pub-5978068561095965/7471584327" />

So just tap this code after opening “main.xml” file with “Axel app” then edit relevant field as marked with RED in above & Save xml

Step-5

Recompile Source folder with APK Tool

Step-6

Now Zipalign apk with APK Tool

Step-7

Sign apk with APK Tool

(I pref “APK editor” app for Zipalign & Signing Bcz its fast. To do this you have to select “Optimize & Sign” Option after step-5)

   

                 (This is what you get Before & After – See the Bottom)

Important things for Reference Only

What is dip?
Density-independent Pixels - an abstract unit that is based on the physical density of the screen.

Related example:-

-px     (Pixels)

-in      (inches)

-mm  (Millimeters)

-pt     (Points)

-sp     (Scale Independent Pixels)

What are the Method through which we can remove Banner ad’s?

-          By editing Layout

-          By editing code in dex

Here is List of Known Ads to identify them easily –

• .gstatic.com
• .admob.com
• .analytics.localytics.com
• .flurry.com
• .greystripe.com
• inmobi.com
• admax.nexage.com
• ads.mdotm.com
• my.mobfox.com
• .plus1.wapstart.ru
• .madnet.ru
• .mp.mydas.mobi
• millennialmedia.com
• .g.doubleclick.net
• .appsdt.com
• ad.leadboltads.net
• run.admost.com
• mobile.admost.com