Dnscat2 powershell bug-fix and new feature

I need bug-fix and new feature for dnscat2-powershell script.

Bugs I've found:

1) When you send russian(cyrillic) text in command then script send tons of request and don't work properly (client).

2) When you send kill command then script does not go down(powershelgl-client still sending requests).

3) When you stop the server and restart dnscat2-server then Client does not work properly but still sending requests (you can see tcpdump or error log).

One of the way to solve the problem #3 is to restart the self-session on Client-side each 15 minutes and create new session.

New feature I need:

Also I need a function which will check DNS TXT record for STOP command.

Sometimes client/server not work properly.

I need some stuff which will check every 1 minute value of DNS TXT record of domain I've selected.

The new parameter name should be "-StopDomain".

When I send command with text "!show_info" in server-window then client should send information with information about StopDomain.

This value should contains random subdomain of "-StopDomain".

For example:

I've run dnscat2 in powershell:

dnscat2 -Domain [url removed, login to view] -e [url removed, login to view] -StopDomain [url removed, login to view]

Then I receive new session on the Server side (at the [url removed, login to view]).

I send a command "!show_info" to my session.

And receive something like this: "StopDomain is: [url removed, login to view]".

Then something goes wrong and I lost control of the session. (for example server rebooted).

Then I go to DNS settings of [url removed, login to view] and change value of the TXT-record "xha73" and set it's value to "stop".

Then our powershell-script checking the value of TXT-record [url removed, login to view] and exit from function and stop sending requests.

Here is this powershell script:

[url removed, login to view]

Here is dnscat2 server:

[url removed, login to view]

The best OS to setup dnscat2-server is Ubuntu.

I can give you VPS with dnscat2-server installed.

I can show each problem on my dnscat2-server using TeamViewer before you will start the project.

Also I need bug-fix for long commands.
When you send command text with length more then 100 symbols then client send many errors to server.

Skills: .NET, C# Programming, Powershell, Software Architecture

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About the Employer:
( 0 reviews ) Kyiv, Ukraine

Project ID: #12020685

8 freelancers are bidding on average $699 for this job


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Hi, Please feel free to discuss the project with me so that i can wrap it up in a timely manner as per your requirements. Thanks, Murtaza

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