Questions tagged [apk]

Android Application Package is the package file format used by the Android operating system for distribution and installation of mobile applications.

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Is it possible to hide androidmanifest.xml

I heard from someone today that androidmanifest.xml is hidden by new malware. I couldn't find anything about this on the internet. Is it possible?
mustafa günel's user avatar
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How to make a apk packages manually like other linux distro packages?

Because Android Linux-based and it has its own package format named APK, so it will be possible to create APK packages manually from a specification like a specification for pacman packages in Arch ...
Smm's user avatar
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Recognize API calls of an APK

I have an Apk file for an app that functions as an AI image generator. I want to identify the specific API call responsible for the AI image generation. How can I do it?
Saad's user avatar
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Need help when reading .sam file of cocos2D game

so recently I tried to reverse a dead game apk to get their animation cause it's so unique that me and my friend want to remake it. But it took so long to just take each part of the image and combine ...
NoName's user avatar
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APK Reversing. Some code is hidden?

Sorry for my English. I accepted a challenge (part of the partial exams of the year) from my university professor of IT Security and Privacy. He gave me an APK and I need to find out how the login is ...
Mr Ciccio's user avatar
2 votes
1 answer
560 views

Need help decrypt xxtea encrypted Lua file from cocos2D game

I was trying to recreate this game because it was down but I really love it. I tried to decompile the apk and I got the java code and the assets then I looked around the code and found out the main ...
NoName's user avatar
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Cannot debug native library of Android apk

・I am debugging an apk file. ・The address I want to stop at BreakPoint is in the native library(.so) (no function name). ・The native library has a "JNI_OnLoad" function, so I set BreakPoint. ...
momonga's user avatar
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How to locate the code used for encryption of qrcode message in apk file

When I scan a QR code in this app it gives an encrypted message. I want to figure out what method this app used to encrypt their QR codes. I used Dextojar to look at the source code but couldn't ...
Menno van de Linde's user avatar
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1 answer
451 views

possible to modify apk to bypass api request/response?

I have an apk for an app that contacts a web API that no longer exists. I do not have the source code. The app will not work normally without getting a response from the API. Something like this: ...
garbb's user avatar
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APK / Decrypting [closed]

I'm new to Reverse Engineering, so I apologize if something is wrong. There is a free program that requires a license key, which can no longer be bought and obtained. I'm trying to write a KeyGen or ...
wh1tedance's user avatar
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How to edite a compiled Reactive Native file "main.bundle"

I bought I vacuum robot from Dreame and needed to replace the Lidar sensor myself as in my country (Brazil) don't have technical assistance, but now it is not working properly because it says that don'...
Trix's user avatar
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Reverse engineering a flutter built apk

I was trying to reverse engineer an apk built with flutter. I actually feel like reversing flutter built apps did not get much reverse writeups on the community. one of the tools for the task ...
hanan's user avatar
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2 votes
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How do you identify a software framework?

I downloaded a free app but I want to stop it from showing ads. https://www.statista.com/statistics/869224/worldwide-software-developer-working-hours/ Apparently it's almost certainly in one of the ...
Ethan Miller's user avatar
2 votes
0 answers
440 views

Extract assets images from a games APK [closed]

I'm trying to remove some images from an android game, but when I try to view them in a hexadecimal viewer I see that they don't contain a PNG header, so I can't view them through the python PIL ...
amateur's user avatar
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deobfuscate Dexgaurd obfuscated code

I was reversing an apk. the code detects whether the apk is running on a rooted device or not. if it is rooted or an emulator it will stop and close out. so this is the snippet code which I think it ...
hanan's user avatar
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3 votes
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Inverter BLE communication module receives commands in HCI_ACL but apk shows ATT

I have a solar inverter which can be queried through mobile apps, eSolar O&M or eSolar SET. My goal is to read values from the inverter (solar power, grid consumption...) by querying the device ...
iMil's user avatar
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reverse engineering an APK file to find HTTP requests in the source code

I've extracted an apk(react native) with dex2jar and jar to java through jd-qui and also with apktool, and I can view the source code but there is no clue where are the HTTP requests in the source ...
user42721's user avatar
2 votes
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Cant view some classes while inspecting APK's code

I'm trying to understand how the application works. I used dex2jar utility to receive .jar file (d2j-dex2jar --force file.apk). And jd-gui to view it's classes. I'm able to view the most of them. But ...
Баранівський Вадим's user avatar
3 votes
0 answers
497 views

How to decompile an APK written in Golang?

I recently started trying to learn basic reverse engineering and Golang. Decompiling Android apps written in C++ and Java/Kotlin seems easy as there are tons of documents and tools that enable you to ...
CJK's user avatar
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2 votes
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Reverse engineering of Process manager apk

Is there someone helps me to understand how to build the server of this apk https://lab52.io/blog/complete-dissection-of-an-apk-with-a-suspicious-c2-server/ ? I tried to disassemble the apk but it is ...
Gregor's user avatar
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Malware apk in Android [duplicate]

Is there some website where i'm able to find malware apk filtering by permission (for instance: RECORD_AUDIO)? I'm looking for website similar to pithus
Gregor's user avatar
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1 vote
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1k views

Decompiling and Recompiling APK leads to crash using Apktool

Decompiling and recompiling an apk causes it to crash. My goal is simply to insert a method into smali code that prints a stacktrace, but even decompiling and recompiling with no changes causes the ...
Sid's user avatar
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Malware application in Android

Is there some website that give us the possibility to download malware APK in order to study it? I’m interested to study the abuse of android.permission.RECORD_AUDIO in Android 8.
Gregor's user avatar
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Extract resource images from a games APK

I'm looking to pull the images off of the game "Summoners War" to use for wallpapers and such. I have access to the images themselves, but they seem to be encrypted and cannot be viewed. ...
KevinT's user avatar
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1 answer
364 views

Reverse engineering ELF: The e_phentsize field in the ELF header is less than the size of an ELF program header

I have extracted the .so binary libTheArmKing.so (located in lib directory in apk file) from a hack of World War Heroes game (an Android game) from Plantimod Forum. file output: libTheArmKing.so: ELF ...
raspiduino's user avatar
1 vote
1 answer
2k views

Modify, unpack, and rebuild an Android App Bundles (.aab) file

My developer has not provided me the source code backup for my listed app in Google Play (his PC was stolen and all codes are gone with it). I logged on to my Play Store developer's account and found ...
Arban Naco's user avatar
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224 views

How can i inject xamarin smali code into another apk?

I tried to make a simple foreground service android application using xamarin... then decompile and inject it into another apk...but it always crashes. here is adb logcat : 05-31 23:57:34.158 7680 ...
akunguti's user avatar
0 votes
1 answer
550 views

How do I gain access to files that an Android app stores in its persistent internal storage directory?

I was playing a game that had hidden achievements and wanted to find the conditions necessary to unlock these achievements. To do this, I've tried to get the source code of the game, to find the ...
Michael's user avatar
1 vote
0 answers
570 views

Decrypting .PNG files from Chinese mobile game

Amateur here. I'm working on decrypting a couple of .PNG files extracted from an .apk of a Chinese One-Punch Man mobile game. They're identified as .PNGs by Windows, but can't be opened by any ...
Sam's user avatar
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290 views

Checksum verification of an apk does not the same as my java program

I'm from the sysadmin side of the IT and have not much experience in programing. I have an app that lets me screen share Android apps on my car's display. Sadly there is a whitelist baked into the app,...
Simon Sutter's user avatar
1 vote
0 answers
122 views

Is this native code possible for further static analysis?

I was trying to reverse engineer a native lib code in an android app. the .so contains many functions. But the function sUQWWyTBEs() was referred in the Java code. I was curious how this function ...
hanan's user avatar
  • 309
4 votes
2 answers
633 views

On reverse engineering an udp protocol to control a drone

My goal is to control my drone with my raspberry pi using python and not the app that is being delivered together with it. First I connected the app to the drone, flew and used aircrack-ng to get the ...
Pascal Widmann's user avatar
2 votes
1 answer
406 views

$$Lambda$(number) when decompiled Java bytecode

Why when I decompile a Java bytecode (which further was decompiled from .dex), I get $$Lambda$(number), in Java files, and it's not possible to build project with these java codes as it's insufficient ...
pishies's user avatar
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2 votes
1 answer
3k views

finding rest api urls after decompiling apk

i have two apk files , when i decompile them using apktool i can take a look at decompile code , so here is what really confuse me , in the first apk if i searched the hole files for strings witch ...
Hothifa Farh's user avatar
1 vote
1 answer
7k views

how to change app name and package name of an apk?

I decompiled an apk and I made a couple of modifications. When I tried to recompile it I got that error : Compiling APK file... /c "java -Xmx1024m -jar "C:\Program Files (x86)\APK Easy Tool\...
BAHADDOU Mohammed's user avatar
1 vote
0 answers
474 views

Android app Viber (com.viber.voip) mitm

I want to see what viber is sending out of my android phone, I'm using mitm proxy (custom server) but the app is using certificate pining to detect the proxy and close the connection after the ...
Thabit.exe's user avatar
2 votes
1 answer
2k views

Debug 3rd-party apk with .so-files missing debug symbols

Apologies, if this has been asked before. I am reverse engineering a chinese app that connects to a BLE device, so I can inspect how it transmits the data. Using this official guide I decompiled my ...
eli_james's user avatar
2 votes
1 answer
2k views

How to read dnSpy code from assembly_csharp.dll

So I have managed to retrieve the assembly_csharp.dll using the il2cpp tool from an android apk, however my issue is that when I go to read the dll using dnSpy I have all the correct looking function ...
zombunny's user avatar
2 votes
1 answer
148 views

Can obfuscation be applied on certain parts?

I am newbie to this field. I am still learning from your wonderful contributions, help and guidance. I have had an app that i want to study in-depth. How the the it is constructed? What components ...
ciaha 's user avatar
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2 votes
1 answer
704 views

apk crashed on launch when re-signed with debug key

I sometimes decompile and recompile apks and make changes (like changing graphics, text etc...) normally I use apktool to decompile and recompile and then use testsign.jar to resign the apk with the ...
garbb's user avatar
  • 131
2 votes
0 answers
59 views

How to use smalivm and simplify to find a certain static constant from APK or remove confusion?

smalivm: Provides a virtual machine sandbox for executing Dalvik methods. After executing a method, it returns a graph containing all possible register and class values for every execution path. I ...
user69485's user avatar
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How do I find the function that draws a window on android?

I have an application that recently disabled support for one of the features I used for legal reasons. Looking at the decompressed file size and count of the new version compared to the old version ...
adamski234's user avatar
2 votes
1 answer
239 views

Any ways to combine Android APK with Expansion pack file?

I want to have only one APK that contains all files and resources without having to download expansion pack every time. Is there any way to combine Android APK with Expansion pack file? My expansion ...
FreeMind's user avatar
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1 vote
0 answers
751 views

How does Andriod .so files Reverse Engineering with a dissasembler like IDA pro and Cutter work

So few days ago going through youtube Reverse Engineering videos, i came across a particular video where an android application was modified using IDA pro by disassembling it's .so file found in /lib ...
0xBones 's user avatar
-2 votes
1 answer
239 views

How to reverse engineer apks? [closed]

is it possible to reverse engineer an apk just to unlock hidden/unreleased features?
hanan's user avatar
  • 309
3 votes
1 answer
538 views

Modifying (adding new logic) decompiled apk to log different kind of data causing problems (crash/bluetooth connection)

I have separately decompiled apk to smali/dalvik and to java classes. As apk is not obfuscated java code is pretty good to read and I can pretty easily see corresponding smali code. So far I was able ...
matt's user avatar
  • 33
3 votes
1 answer
2k views

how to decompile or unite multipart dex class in an android apk file?

Some Android Apks contain multiple classes.dex files which are numbered like this: classes1.dex, classes2.dex ... and when i try to decompile them it would result into multiple source codes. Is there ...
kamyar haqqani's user avatar
0 votes
1 answer
780 views

Android packageInfo signature

Are there anyways I can learn what packageInfo.signatures[0] is so I can use it to apply the same algorithm in Python. To further explain: private static SecretKeySpec a(Context context) { ...
Shubidubapp's user avatar
2 votes
1 answer
257 views

App from playstore runs but the same apk crashes on sideload install

On my nougat device, I have downloaded an app from the playstore, which is running great. I then extracted the apk from the installed app, and uninstalled it and again successfully, with the package ...
kakakhan2016's user avatar
-1 votes
1 answer
4k views

Change androidmanifest.xml file within apk

I am able to unpack an android apk file with apktool, but when I am repacking the apk file using apktool, it just crashes with errors, and ibotpeaches seems not patching those errors for years. Now ...
hanan's user avatar
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