How to reverse engineer android apps (Tutorial)

In this video I'll demonstrate how to hack | crack | reverse engineer an android app i.e the APK file.

The same process can be used to hack any android apps.

Tools:

You can download the Android apk used in this video from:

Alternatively, you can also download all the tools from my Google Drive. The link is below:

Disclaimer: This video is only for educational purpose and is not to encourage piracy in any means.

[magnusanderson]

Gonna try to do this to add features to a mobile game that isn't updated anymore. Great video!

[_productivity__nill_]

Make sure you have Java installed before you do this

[digital_underground]

Dude, you just saved me weeks of work on trying to update a GPL licensed app that the author DID NOT make all of the source files available for. It's almost 6 years old, and the guy left a note that said it doesn't include all of the sources, and if I want the rest, I need to email him lol. Yeah, that was BS. I emailed him, no surprise that I didn't get a reply, seeing as how he might not even be alive anymore. Don't use GPL if you can't make the source available.

Anyway, thanks for showing this, because this is awesome.

[tejastidake]

Someone 🙏🙏🙏 Please help, Everything is working correctly but as soon i compile app after changing or without changing anything in source code the dist file is not generating please help...

[dangeneral]

I wanna know if i can reverse engineer an app on my iphone called last day on earth so i could have free stuff on it like mod it

[Whispers]

did you cd to get to you haking folder or what tell us

[goluthakur]

i have decompile it gives me source code but I don't know how to modify

[itsmdud]

which languages i should learn to reverese engineer mobile games?

[mlonfx]

Hey, is there a way to search for a string in the java decompiler?

[nabil.hamawi]

isn't there any way to see a comprehensive code ? its really hard to determine which function to edit

[vincentdumas]

Hi, is it possible to change the code directly in the java code, save it and use the jar2dex tools to generate a new apk ?
Regards.

[vongcohay]

When I execute the command d2j-dex2jar.bat -f ../myapp.apk then encounter this error, how to handle it? can you help me? thanks

[AndarSeProGamer]

hay man i have a app in previous version the spin button was not lock but after update app spin button lock so is there any way to solve this problem

[neerajverma]

Is there any other tool than Apktool to decompile and recompile the apk?

[sameeart]

bruh idk java coding its kinda hard to find what i want to modify... :(

[bambielashay]

Is there a way to eliminate the option to update and or to direct it to a location of my choice?

[frezerfiseha]

Yo bro pls respond to me I have 1 app I want to update the sdk I mean it's not working on high version phones

[ranojskiwondertv]

bro would you mind to help me i have a save data backup that i made from a virtual app called f1 vm and the version inside is android 7.1.2....i backup my data using titanium backup now im using android 11 and i use again titanium bakcup but it seems my data cannot be attacthed..pls help thank u and more power to your channel

[dej]

I tried installing my modded app but it put a error message saying "There was a problem while parsing the package". Idk what it means but it may be because the apk is not secure. I already have installing from unknown apps enabled but it still doesn't work so pls help

[tailyfale]

question1: there are lots of ".line 123" marks. I understand it was made for mapping the code to its source (for debug). What happens if I delete some of them, or make new ones? Will the application still work after recompiling?
question2: there was an array (23 values in total) in my decompliled app. I added a new element with my own value. Changed the "filled-new-array/range {v0 .. v23}" to "filled-new-array/range {v0 .. v24}". But app started crashing. What did I do wrong? o_O