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Using Java Class Dissection

 
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Vreejack
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Joined: 01 Apr 2011
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PostPosted: Wed Jan 27, 2021 7:24 pm    Post subject: Using Java Class Dissection Reply with quote

So I finally got the java injector to work. I had to force using the jre and not the jdk (oops).

Anyway, what are the numbers I see in the class dissector? I see a class enumeration and then either a 2, 3 or 11-digit hex number. Some of these might be pointers but i cant figure out how to use them or relate them to actual memory.
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Vreejack
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Joined: 01 Apr 2011
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PostPosted: Thu Jan 28, 2021 5:17 pm    Post subject: Reply with quote

So the 13-digit numbers are absolute addresses, and the shorter addresses are offsets of some kind, but I cannot make any sense out of them. In memory I can see rows and rows of what must be relative indexes, but I cannot figure out how they relate to the class dissection values.

Just to be clear, are indexes stored in reverse-byte order?
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Dark Byte
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PostPosted: Thu Jan 28, 2021 6:27 pm    Post subject: Reply with quote

It's been a while so i'm not 100% sure what each one is, but in java, don't look at addresses (unless you disabled OOP compression)
With the java information the important things are classnames, routines that access variables (their classname and methodname) and a way to find those classes. You can force jut those and get a pointer to the method and then hook there, or rebuild the class with a java compiler and then use CE to write it

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