Exception in thread "main" java.lang.NullPointerException #145
Comments
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Thanks for filling out the issue template, but I don't have the sample so I can't reproduce. What version of simplify are you using? |
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as per as he given detail binary should be from page |
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@CalebFenton any version of Google Camera Go should throw the given Nullpointer exception in title. |
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I'll take a look at this specific bug, but if you're trying to deobfuscate
an entire, large, commercial APK, you're going to see bugs. Simplify works
best on 1.) actually obfuscated code (not just proguarded, which is usually
malware) and 2.) specific classes or methods. Try excluding problematic
classes or, better yet, only including the classes you care about.
…On Wed, Jul 29, 2020 at 1:23 AM Stefan ***@***.***> wrote:
@CalebFenton <https://github.com/CalebFenton> any version of Google
Camera Go should throw the given Nullpointer exception in title.
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I picked this apk because it is modified by a community member I wanted to see if there is some malware in it.But yeah you are right I should try other apk. |
Provide specific APK, DEX, or file hash
CameraGo.apk (Parrot043, 2020-04-13)
Describe the bug
`Microsoft Windows [Version 10.0.18362.959]
(c) 2019 Microsoft Corporation. All rights reserved.
E:\Android Reverse Engineering Tools\Deobfuscator>java -jar simplify.jar "E:\Android Reverse Engineering Tools\Deobfuscator\deobfuscateme.dex"
[1 / 6321] Processing top level class Lige;
(1 / 3) Executing top level method: Lige;->()V
Simplifying: Lige;->()V
Optimizations:
constantized ifs = 0
constantized ops = 0
dead assignments removed = 0
dead ops removed = 0
dead results removed = 0
nops removed = 0
peephole optmizations = 0
unreflected fields = 0
unreflected methods = 0
useless gotos removed = 0
(2 / 3) Executing top level method: Lige;->()V
Simplifying: Lige;->()V
Optimizations:
constantized ifs = 0
constantized ops = 0
dead assignments removed = 1
dead ops removed = 0
dead results removed = 0
nops removed = 0
peephole optmizations = 0
unreflected fields = 0
unreflected methods = 0
useless gotos removed = 0
(3 / 3) Executing top level method: Lige;->a(ILjava/lang/Object;)Ljava/lang/Object;
Simplifying: Lige;->a(ILjava/lang/Object;)Ljava/lang/Object;
Exception in thread "main" java.lang.NullPointerException
at org.cf.smalivm.context.HeapItem.getValueType(HeapItem.java:93)
at org.cf.simplify.strategy.ConstantPropagationStrategy.canConstantizeAddress(ConstantPropagationStrategy.java:97)
at java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)
at java.util.stream.IntPipeline$4$1.accept(Unknown Source)
at java.util.Spliterators$IntArraySpliterator.forEachRemaining(Unknown Source)
at java.util.Spliterator$OfInt.forEachRemaining(Unknown Source)
at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)
at java.util.stream.AbstractPipeline.evaluate(Unknown Source)
at java.util.stream.ReferencePipeline.collect(Unknown Source)
at org.cf.simplify.strategy.ConstantPropagationStrategy.getValidAddresses(ConstantPropagationStrategy.java:107)
at org.cf.simplify.strategy.ConstantPropagationStrategy.perform(ConstantPropagationStrategy.java:48)
at org.cf.simplify.Optimizer.simplify(Optimizer.java:109)
at org.cf.simplify.Launcher.executeMethods(Launcher.java:221)
at org.cf.simplify.Launcher.run(Launcher.java:141)
at org.cf.simplify.Main.main(Main.java:14)
E:\Android Reverse Engineering Tools\Deobfuscator>`
To Reproduce
Took the classes.dex and tried to decompile
java -jar simplify.jar "E:\Android Reverse Engineering Tools\Deobfuscator\deobfuscateme.dex"
Attempted work-arounds
Did you try any work-arounds? Did you read the README?
Didnt found any workarounds, yes!
Screenshots
If applicable, add screenshots to help explain your problem.
Additional context
Add any other context about the problem here.
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