Hello Again.

I am interested in learn a little Java for the heck of it.
I was trying to install Jbuilder 3.5 without importuning the software company to give me a serial and a key code.
A somewhat unusual looking window asked me for the data. After I entered the proverbial 1234554321 for serial and tried to break in the computer process with the usual Sice BPX I got nothing. Not even hmemcpy. The 'incorrect serial number' nag screen is not a typical windows process. When I disassembled the starter program (18k) I realized that all it does is load a JAVA machine and the validation routine and all the other processes are java themselves.
Question for the public:
Has anybody dealt with Java reversing?
Has anybody attacked this program before?
(I found very few references and tuts)
Am I way too off base and the Java reversing tools and techniques have not taken off jet

Good question. I also want to learn how to reverse Java *.EXEs.

For *.class files, we can use Java decompiler/disassembler to get a dead-list, then analyze the source code.
But for Java EXEs, how to reverse it? I often get lost in the Java VM. Is there any tool to extract *.class file from the EXEs?
In addition, if *.class is compressed, it will be hard to get a dead-list unless there is a decompressor.

BTW: Java uses wide char, so "BPX MultiByteToWideChar" may be a good breakpoint.

solomon: http://www.woodmann.net/cgi-bin/Ultraboard/UltraBoard.cgi?action=Read&BID=5&TID=826

bratsch: use a program like decafe or nmi (or even jad itself) to decompile .class's

Thanks for your kindness Solomon and disavowed. This gives me some place to start. If anybody is interested in my adventures in this field, drop me a line and I will share what I have found.

Thx disavowed, that tool is just what I want