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Questions tagged [dex2jar]

Dex2jar is a set of tools to work with Android .dex and java .class files.

Tools to work with Android .dex and java .class files

  • dex-reader/writer: Read/write the Dalvik Executable (.dex) file. It has a light weight API similar with ASM.
  • d2j-dex2jar: Convert .dex file to .class files (zipped as jar).
  • smali/baksmali: disassemble dex to smali files and assemble dex from smali files. Different implementation to smali/baksmali, same syntax, but with support to escape in type desc "Lcom/dex2jar\t\u1234;"
  • other tools: d2j-decrypt-string

Official website

dex2jar

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dex2jar and JD-GUI label statements

I used dex2jar to get jar from an apk and to view it used JD-GUI . But I notice there are label symbols such as following, if (this.data.length != 7) break label279; // more code here label279: short[] aos = { 0, 0…
nish1013
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Error with dex2jar classes.dex file for reverse engineering of apk file

I am trying to extract the source code from an apk file and I am following the following steps Is there a way to get the source code from an APK file? My problem is that when I execute the command dex2jar classes.dex I get a file not found…
user1844638
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During Reversed Engineering of htc android application

I am trying to decode htc's messaging app's apk file using dex2jar and apk-tools . I reversed more than 30 apps perfectly without any trouble ! but I can't do same thing with htc's app ! can any one help me to get out of this problem? Problem 1…
Hardik Thaker
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I trying to convert .apk to .jar file in cmd it shows following error

I tried to convert .apk file to .jar file using dex2jar in cmd and it say "java.nio.file.nosuchfileexception:" I was expecting it to convert into .jar file
Nandani Mishra
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Alternate method to reversing than reading smali code?

I am reversing an android app. I want to modify and rebuild it. I used APK Studio (which is pretty much a GUI version of apktool) to get the files inside the apk. Now reading smali code is very difficult. I also tried to unzip it, get classes.dex,…
hp2505
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What magic do I need to read an APK with dex2jar?

I'm trying to use dex2jar to read a dex file (an Android APK) in a plain Java app. I have a file object to the APK and then simply call new DexFileReader(dex) However this throws the following exception "not support…
Nick Cardoso
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dex2jar error: handleHotSwapPatch + FragmentManagerImpl

I tried to access codes of my deleted app by apk got from emulator. I accessed classes.dex but there is a problem making it jar by dex2jar. This is really important for me, how to fix that? The error file below: Summary version: reader-1.15,…
Ahmet Said GÖKSU
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converting java files into .jar and make it .dex

I'm trying to edit an .apk file changing some variables or adding some functions in java files in it. So, firstly, I used apktool to decompile the .apk. Then, I used dex2jar to make classes.dex to classes.jar and used jd-gui for reading the file. As…
Mark Yoon
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Writing output of dex2jar to other folder

I am trying to write a batch file that writes the classes-dex2jar.jar to some other folder. I tried the following: d2j-dex2jar %arg1% -o %arg2% Here, arg1 is the path to classes.dex and arg2 is the folder where I wish to store the generated…
user3792329
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Converted dex2jar to .jar file. However results are empty in JD GUI

I have converted my dex file from apk to to a jar file Steps: Change xyz.apk to xyz.zip Extract xyz.zip Copy classes.dex to my dex2jar folder Drag and release clases.dex onto dex2jar.abat Classes_dex2jar.jar is created Open…
yitch
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Eclipse Android Imported existing projects Accidently replaced and project all gone

I updated the ADT and imported the projects. Unfortunately, I replaced the projects/folder. All of sudden, all the files in the folder became 0 bytes, including files in sub folders and all the current auto backups. Is there any other way to…
Kapil M
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Convert .dex file to .jar file using dex2jar

I have made an application that converts .dex file to .jar file using the library dex2jar. the code is given as follows: import com.googlecode.dex2jar.v3.Main; { String apkPath = "D://myapk.apk" ; Main.main(apkPath); } this code block works…
droidev
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How to extract java files from .apk file

Unfortunately I deleted my Android source code. Tried to get jar using dex2jar and baksmali and used jd-gui to get java source files using my .apk file. Yes I got the files but the problem I have is, in more places in the java file, the code is in…
Joseph
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How to programmaticaly decompile values into source literal?

I'm busy with a simple decompiler for Android. I want to make a nice decompiled view. I use dex2jar. Let's say I have a field declaration: public byte[] test = new byte[2]; With the FieldVisitor I get: public as modifier byte[] as type test as…
Peterdk
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How to run a .jar output from dex2jar?

I just decompiled an .apk file to .jar using dex2jar. However, I cannot execute the output file. Instead I get the error: "Invalid or corrupt jarfile" I tried dex2jar 2.0 and 2.1 and I'm using the newest version of Java. Is there a way to execute…
Anton Feirer
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