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CalebFenton / simplify

Android virtual machine and deobfuscator
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Exception in thread "main" java.lang.RuntimeException #147

Closed apkunpacker closed 3 years ago

apkunpacker commented 3 years ago

Command Used:

java -jar simplify.jar --max-call-depth 999 --max-address-visits 999 --max-method-visits 999 --ignore-error demo.apk

Sample :

demo.apk.zip Rename to demo.apk from demo.apk.zip

Output : /storage/emulated/0 $ cd debugging
/storage/emulated/0/debugging $ java -jar simplify.jar --max-call-depth 999 --max-address-visits 999 --max-method-visits 999 --ignore-error demo.apk 04:21:42.945 INFO Main - Options: Input file: demo.apk Output file: demo_simple.apk Include filter: null Exclude filter: null Max execution time: 300 Max address visits: 999 Max call depth: 999 Max method visits: 999 Max optimization passes: 100 Output API level: 15 Include support library: false 04:21:46.292 INFO Main - Filtered 0 support library classes ../../../../data/data/ru.iiec.jvdroid/cache/simplify12274818260362964318/com/Native.smali[6446,4] null Exception in thread "main" java.lang.RuntimeException: Error loading class definition: Lcom/Native; at org.cf.smalivm.type.ClassManager.parseClass(ClassManager.java:187) at org.cf.smalivm.type.ClassManager.parseClassIfNecessary(ClassManager.java:205) at org.cf.smalivm.type.ClassManager.getVirtualType(ClassManager.java:137) at org.cf.smalivm.type.ClassManager.getVirtualType(ClassManager.java:158) at org.cf.smalivm.type.ClassManager.getVirtualClass(ClassManager.java:130) at org.cf.simplify.Launcher.collectTargetClassNameToMethods(Launcher.java:167) at org.cf.simplify.Launcher.run(Launcher.java:134) at org.cf.simplify.Main.main(Main.java:14) Caused by: java.lang.RuntimeException: Unable to walk: /data/user/0/ru.iiec.jvdroid/cache/simplify12274818260362964318/com/Native.smali at org.cf.smalivm.dex.SmaliParser.parse(SmaliParser.java:83) at org.cf.smalivm.type.ClassManager.parseClass(ClassManager.java:184) ... 7 more /storage/emulated/0/debugging $

Context : apk is highly obfuscted ( all classes ) .Apk run fine but can't use simplify on it , neither can do dex2jar on it . removing Lcom/Native.smali either didn't help , it produce new similer error of another class if removed native.smali . Tried all simplify command with different values but error stay same . so i am assuming dex is not properly parsed

CalebFenton commented 3 years ago

I wasn't able to reproduce the error until I baksmali'ed the apk and ran against the actual smali. The problem is that dexlib2 isn't able to parse the smali file. You can test this by running baksmali and then trying to smali the output. You'll get a similar error:

$ baksmali dis issue_147.apk
$ smali ass -o dexy.dex out
out/com/Native.smali[4660,4] null
out/com/mycompany/myapp/MainActivity.smali[1409,4] null

You'll need to create an issue for dexlib2 and see if they can help you with it.