What steps will reproduce the problem?
1. dex2jar-0.0.9.9/d2j-dex2jar.sh classes.dex
What is the expected output? What do you see instead?
dex2jar doesn't handle overlapping instructions well.
If e.g. an instruction overlaps and an exception handler, dex2jar raises
java.lang.NullPointerException
Such an overlapping is not usual for normal applications but can occur in case
of bytecode obfuscation.
classes-error.zip file cannot be attached, because the attachment quota of this
project has been exceeded. But it can easily be reproduced using the original
apk file.
original apk: http://www.dexlabs.org/files/crackme-obfuscator.apk
If you need more infos about this, i can provide a writeup about this
obfuscation technique
Original issue reported on code.google.com by thuxn...@dexlabs.org on 26 Jul 2012 at 6:52
Original issue reported on code.google.com by
thuxn...@dexlabs.orgon 26 Jul 2012 at 6:52