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Questions - javassist

How to modify bytecode on class load JVM no args

I have an exe that is starting a JVM and loading java classes into memory. I was successfully able to dump these classes with a -javaagent from the running JVM by attaching it to the process and retra...
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Code Base

java

debugging

jvm

reverse-engineering

javassist

Votes: 0

Answers: 1

Latest Answer

I can't really speak to the idea of proxying the jvm.dll. Sounds like very delicate and error-prone work. Don't know much about Themida either, but from some cursory browsing, you would be deliberatel...
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Nicholas

Javassist. java.lang.VerifyError: Bad type on operand stack

public interface MethodInvoke { Object invoke(Object... args); } public class Target { int hello(int value) { return value + 1; } } // pool is ClassPool CtClass enhance = pool.makeClass(Metho...
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cityblack

java

javassist

Votes: 0

Answers: 0

How to generate looping bytecode using Javassist?

I am trying to write a compiler for an esoteric programming language that compiles to Java Bytecode. I'm trying to use Javassist to generate the bytecode. I got stuck when trying to generate branching...
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Sweeper

java

javassist

bytecode-manipulation

Votes: 0

Answers: 1

Latest Answer

Thanks to Holger's comment, I was able to figure out that I actually needed a StackMapTable, not a StackMap. And I indeed need a stack map table entry at every branch destination. var stackMap = new S...
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Sweeper

Javassist Classpool.get() does not find class when using fully qualified name

I am attempting to get a simple Javassist example going. Consider the following code. Assume variable classPath points to a correct class folder that contains the required .class file. When running, t...
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ragnacode

javassist

Votes: 0

Answers: 1

Latest Answer

You simply need to use the correct classpath. This is wrong, because you are pointing into a package subdirectory rather than straight to the root: String classPath = "[CORRECT PATH TRUNK]\\targe...
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kriegaex

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