Examples with Code net.runelite.asm.attributes.Code used on opensource projects

Example 31 with Code

use of net.runelite.asm.attributes.Code in project runelite by runelite.

the class RWOpcodeFinder method find.

public void find() {
    IsaacCipherFinder ic = new IsaacCipherFinder(group);
    ic.find();
    for (ClassFile cf : group.getClasses()) {
        for (Method m : cf.getMethods()) {
            Code code = m.getCode();
            find(ic, m, code);
        }
    }
    logger.debug("Found readOpcode {}, writeOpcode {}", readOpcode, writeOpcode);
}

Example 32 with Code

use of net.runelite.asm.attributes.Code in project runelite by runelite.

the class IsaacCipherFinder method find.

public void find() {
    Method highest = null;
    int count = 0;
    for (ClassFile cf : group.getClasses()) {
        for (Method m : cf.getMethods()) {
            Code code = m.getCode();
            int i = find(m, code);
            if (i > count) {
                count = i;
                highest = m;
            }
        }
    }
    assert highest != null;
    isaacCipher = highest.getClassFile();
    // find nextInt
    for (Method method : isaacCipher.getMethods()) {
        if (method.getDescriptor().size() == 0 && method.getDescriptor().getReturnValue().equals(Type.INT)) {
            getNext = method;
        }
    }
    logger.debug("Found cipher {}, getNext {}", isaacCipher, getNext);
}

Example 33 with Code

use of net.runelite.asm.attributes.Code in project runelite by runelite.

the class Frame method initialize.

public void initialize() {
    // initialize LVT
    int pos = 0;
    if (!method.isStatic()) {
        variables.set(pos++, new VariableContext(Type.getType(method.getClassFile().getPoolClass())).markParameter());
    }
    Signature descriptor = method.getDescriptor();
    for (int i = 0; i < descriptor.size(); ++i) {
        Type argumentType = descriptor.getTypeOfArg(i);
        variables.set(pos, new VariableContext(argumentType).markParameter());
        pos += argumentType.getSize();
    }
    Code code = method.getCode();
    cur = code.getInstructions().getInstructions().get(0);
}

Example 34 with Code

use of net.runelite.asm.attributes.Code in project runelite by runelite.

the class DupDeobfuscatorTest method test.

@Test
public void test() {
    ClassGroup group = ClassGroupFactory.generateGroup();
    Code code = group.findClass("test").findMethod("func").getCode();
    Instructions ins = code.getInstructions();
    code.setMaxStack(5);
    Instruction[] prepareVariables = { new LDC(ins, 1), new IStore(ins, 0) };
    for (Instruction i : prepareVariables) {
        ins.addInstruction(i);
    }
    LDC constant1 = new LDC(ins, 1129258489), constant2 = new LDC(ins, -1692330935), constant3 = new LDC(ins, 1641298955), constant4 = new LDC(ins, 1043501435);
    Instruction[] body = { // this
    new AConstNull(ins), // this
    new AConstNull(ins), new ILoad(ins, 0), constant1, new IMul(ins), new Dup_X1(ins), constant2, new IMul(ins), // putfield
    new Pop2(ins), constant3, new IMul(ins), constant4, new IMul(ins), // putfield
    new Pop2(ins), new VReturn(ins) };
    for (Instruction i : body) {
        ins.addInstruction(i);
    }
    Execution e = new Execution(group);
    e.populateInitialMethods();
    e.run();
    assert constant1.getConstantAsInt() * constant2.getConstantAsInt() == 1;
    assert constant3.getConstantAsInt() * constant4.getConstantAsInt() * constant1.getConstantAsInt() == 1;
    Deobfuscator d = new DupDeobfuscator();
    d.run(group);
    // assert the dup_x1 was removed
    long dupCount = ins.getInstructions().stream().filter(i -> i instanceof Dup_X1).count();
    Assert.assertEquals(0, dupCount);
}

Example 35 with Code

use of net.runelite.asm.attributes.Code in project runelite by runelite.

the class DupDeobfuscatorTest method test2.

// 035   aload_0               // this
// 036   dup                   // this this
// 037   getfield              class153/field2097 I // this I
// 038   ldc                   830083863
// 039   imul                                      // this I
// 040   ldc                   830083863
// 041   iadd                                      // this I
// 042   dup_x1                                    // I this I
@Test
public void test2() {
    ClassGroup group = ClassGroupFactory.generateGroup();
    Code code = group.findClass("test").findMethod("func").getCode();
    Instructions ins = code.getInstructions();
    code.setMaxStack(3);
    Instruction[] body = { // this
    new AConstNull(ins), // this this
    new Dup(ins), new GetField(ins, new Field(new Class("test"), "field", Type.INT)), // this this I I
    new LDC(ins, 830083863), // this this I
    new IMul(ins), new LDC(ins, 830083863), new IAdd(ins), new Dup_X1(ins), new LDC(ins, 636900519), // pops dup
    new IMul(ins), new VReturn(ins) };
    for (Instruction i : body) {
        ins.addInstruction(i);
    }
    Execution e = new Execution(group);
    e.populateInitialMethods();
    e.run();
    Deobfuscator d = new DupDeobfuscator();
    d.run(group);
    // assert the dup wasn't duplicated
    long dupCount = ins.getInstructions().stream().filter(i -> i instanceof Dup).count();
    Assert.assertEquals(1, dupCount);
    // assert the dup_x1 was removed
    dupCount = ins.getInstructions().stream().filter(i -> i instanceof Dup_X1).count();
    Assert.assertEquals(0, dupCount);
}