Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
[ASM] Bytecode and Runtime contradict each other [Fixed]
#5
(12-17-2015, 02:10 AM)Bibl Wrote:  You need to change method parameters and field types. are you doing that?

Method parameters and field types are correct.

[Image: YIFV6BG.png]

The jar itself is in the last post but here's what's run to rename everything.

Code:
@SuppressWarnings("rawtypes")
    public void rename(Map<String, MappedClass> renamemap) {
        // rename the class
        MappedClass classmapping = renamemap.get(name);
        name = classmapping.getRenamed();
        outerClass = StringUtil.fixDesc(outerClass, renamemap.values());
        signature = StringUtil.fixDesc(signature, renamemap.values());
        superName = StringUtil.fixDesc(superName, renamemap.values());
        sourceDebug = "Nope";
        sourceFile = "Nope";
        // rename fields and update descriptions
        for (int i = 0; i < fields.size(); i++) {
            FieldNode fn = (FieldNode) fields.get(i);
            fn.desc = StringUtil.fixDesc(fn.desc, renamemap.values());
            fn.signature = StringUtil.fixDesc(fn.signature, renamemap.values());
            MappedField mf = classmapping.getFields().get(fn.name);
            if (mf == null) {
                continue;
            }
            String newName = mf.getRenamed();
            fn.name = newName;
        }
        // rename methods and local variables
        for (int i = 0; i < methods.size(); i++) {
            MethodNode mn = (MethodNode) methods.get(i);
            mn.desc = StringUtil.fixDesc(mn.desc, renamemap.values());
            mn.signature = StringUtil.fixDesc(mn.signature, renamemap.values());
            if (mn.name.equals("main")) {
                MappingGen.setMain(name);
            }
            MappedMethod mm = classmapping.getMethods().get(mn.name);
            if (mm != null) {
                mn.name = mm.getRenamed();
            }
            InsnList instructionList = mn.instructions;
            List localVars = mn.localVariables;
            if (localVars != null) {
                for (Object o : localVars) {
                    LocalVariableNode lvn = (LocalVariableNode) o;
                    // TODO: Local variable renaming
                    lvn.desc = StringUtil.fixDesc(lvn.desc, renamemap.values());
                    lvn.signature = StringUtil.fixDesc(lvn.signature, renamemap.values());
                }
            }
            if (instructionList != null) {
                Iterator instructIter = instructionList.iterator();
                while (instructIter.hasNext()) {
                    Object o = instructIter.next();
                    if (o instanceof AnnotationNode) {
                        AnnotationNode an = ((AnnotationNode) o);
                        an.desc = StringUtil.fixDesc(an.desc, renamemap.values());
                    } else if (o instanceof FieldInsnNode) {
                        FieldInsnNode fin = ((FieldInsnNode) o);
                        fin.desc = StringUtil.fixDesc(fin.desc, renamemap.values());
                        fin.name = StringUtil.fixField(fin.name, renamemap.get(fin.owner));
                        fin.owner = StringUtil.fixDesc(fin.owner, renamemap.values());
                    } else if (o instanceof InvokeDynamicInsnNode) {
                        // I don't think this is ever called
                        // Multiple test cases and this is never called
                        InvokeDynamicInsnNode idn = ((InvokeDynamicInsnNode) o);
                        idn.desc = StringUtil.fixDesc(idn.desc, renamemap.values());
                        idn.desc = StringUtil.fixMethod(idn.name, renamemap.get(idn.bsm.getOwner()));
                        // TODO: Is this even required?
                        int tag = 0;
                        String owner = "dank";
                        String name = "dank";
                        String desc = "dank";
                        idn.bsm = new Handle(tag, owner, name, desc);
                    } else if (o instanceof MethodInsnNode) {
                        MethodInsnNode min = ((MethodInsnNode) o);
                        min.desc = StringUtil.fixDesc(min.desc, renamemap.values());
                        min.owner = StringUtil.fixDesc(min.owner, renamemap.values());
                        min.name = StringUtil.fixMethod(min.name, renamemap.get(min.owner));
                    } else if (o instanceof MultiANewArrayInsnNode) {
                        MultiANewArrayInsnNode manain = ((MultiANewArrayInsnNode) o);
                        manain.desc = StringUtil.fixDesc(manain.desc, renamemap.values());
                    } else if (o instanceof TypeInsnNode) {
                        TypeInsnNode tin = ((TypeInsnNode) o);
                        tin.desc = StringUtil.fixDesc(tin.desc, renamemap.values());
                    }
                }
            }
        }
    }
Reply
 


Messages In This Thread
RE: [ASM] Duplicate fields when renaming classes - by Dank Vader - 12-17-2015, 12:06 PM

Forum Jump:


Users browsing this thread: 1 Guest(s)

About The Bytecode Club

We're a community focused on Reverse Engineering, we try to target Java/Android but we also include other langauges/platforms. We pride ourselves in supporting and free and open sourced applications.

Website