jode-users

[Jode-users] JODE Obfuscator

[Zaheer B. <bz...@ya...>]

Hello,
I have been trying to make the JODE Obfuscator work,
but failed again and agian.
Here is the situation:

This is where my java.jar file is ==> C:\JODEexample 
Structure of java.jar => 
        java.jar -> java(folder)->file(folder) ->
test.java

Here is the contents of the .jos file:

classpath = "C:\\Program
Files\\Java\\jre1.5.0_06\\lib\\rt.jar","C:\\JODEexample"
dest = "obfuscated.zip"
revtable = "translat.tbl"
strip = "unreach","lvt","inner"
load = new WildCard { value = "java.classes*" },
       new WildCard { value = "java.file" }
       
preserve = new WildCard { value = "java.file.main.*" }

renamer = new StrongRenamer {
  charsetStart =
"aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ"
  charsetPart =
"aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ0123456789_$"
  charsetPackage = "abcdefghijklmnopqrstuvwxyz"
  charsetClass = "abcdefghijklmnopqrstuvwxyz"
}


I have a batch file as well:

set classpath=C:\JODEexample\jode.jar
java jode.obfuscator.Main obf.jos


But when I run the batch file, the error I get is:

Jode (c) 1998-2001 Jochen Hoenicke <jo...@gn...>
used before: 238720
Loading and preserving classes
Time used: 2684
Computing reachability
Time used: 0
used after analyze: 2144552
Renaming methods
Time used: 40
Transforming the classes
Time used: 0
used after transform: 2111728
Writing new classes
Can't write zip file: obfuscated.zip
java.util.zip.ZipException: ZIP file must have at
least one entry
        at
java.util.zip.ZipOutputStream.finish(Unknown Source)
        at
java.util.zip.DeflaterOutputStream.close(Unknown
Source)
        at java.util.zip.ZipOutputStream.close(Unknown
Source)
        at
jode.obfuscator.ClassBundle.storeClasses(ClassBundle.java:431)
        at
jode.obfuscator.ClassBundle.run(ClassBundle.java:541)
        at jode.obfuscator.Main.main(Main.java:189)
Time used: 140


Basically, It does not write anything to the .zip file
and I am totally lost to why it is not working.
Your help is very appreciated.
I have a project presenation on JODE,so if you could
please solve this problem, that would be great.

Thank you in Advance.
Zaheer

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Re: [Jode-users] JODE Obfuscator

[Jochen H. <hoe...@gm...>]

Hello Zaheer,

2006/1/27, Zaheer Bawar <bz...@ya...>:
> I have been trying to make the JODE Obfuscator work,
> but failed again and agian.
>
> Jode (c) 1998-2001 Jochen Hoenicke <jo...@gn...>
> [...]
> Writing new classes
> Can't write zip file: obfuscated.zip
> java.util.zip.ZipException: ZIP file must have at least one entry

This error means that the load rule is not correct and it does
not load any classes.

> This is where my java.jar file is =3D=3D> C:\JODEexample
> Structure of java.jar =3D>
>         java.jar -> java(folder)->file(folder) ->
> test.java

Jode has no compiler built in.  It reads class files, not java files. You s=
hould
compile the project before you invoke the obfuscator.

Also note that the directory must reflect the package structure.  So test.c=
lass
should only be in java/file if it is in package java.file.  However,
the package java
is reserved for Sun, so you should put it in a different package.  I
strongly encourage
the use of packages, I am not sure whether Jode works for classes that
are not part of
any package.

> Here is the contents of the .jos file:
>
> classpath =3D "C:\\Program
> Files\\Java\\jre1.5.0_06\\lib\\rt.jar","C:\\JODEexample"
> dest =3D "obfuscated.zip"
> revtable =3D "translat.tbl"
> strip =3D "unreach","lvt","inner"
> load =3D new WildCard { value =3D "java.classes*" },
>        new WildCard { value =3D "java.file" }

You should not use the package "java" for your own files.

Regards,
  Jochen

--
Jochen Hoenicke, University of Oldenburg, 26111 Oldenburg, Germany
Email: hoe...@in...  Tel: +49 441 798 3124