# ddoor

**github.com/rek7/ddoor**

rek7

cross platform backdoor using dns txt records

## What is ddor?

ddor is a cross platform light weight backdoor that uses txt records to execute commands on
infected machines.

## Features

Allows a single txt record to have seperate commands for both linux and windows
machines
List of around 10 public DNS servers that it randomly chooses from
Unpredictable call back times
Encrypts txt record using xor with custom password
Supports DNS over HTTPS (Shoutout to Keith @keharv for adding this!)

**Linux Features:**

Anti-Debugging, if ptrace is detected as being attached to the process it will exit.
Process Name/Thread names are cloaked, a fake name overwrites all of the system
arguments and file name to make it seem like a legitimate program.
Automatically Daemonizes


-----

Tries to set GUID/UID to 0 (root)

**Windows Features:**

Hides Console Window
Stub Size of around 700kb

## Installation

To install the dependencies needed for the python generation script run.
```
pip3 install -r requirements.txt

```
Make sure to edit config.h and replace the provided domain with yours, you can change the
fake name as well as the password.

**To create a Linux binary:**

Run the compile.sh script, this will create a file called binary in the bin folder.

**To Create a Windows Binary:**

This project was built using VS 2019, if you open the sln file using VS2019 select the release
build and build it.

## Usage

Run payload_manager.py with python3 to create a hex encoded payload, then update or
create a txt record for your domain, make sure that the TTL is set to 300 seconds!!!

**Payload Manager Usage:**


-----

```
$ ./payload_manager.py h
@@@@@@@  @@@@@@@  @@@@@@  @@@@@@  @@@@@@@
@@@@@@@@ @@@@@@@@ @@@@@@@@ @@@@@@@@ @@@@@@@@
@@! @@@ @@! @@@ @@! @@@ @@! @@@ @@! @@@
!@! @!@ !@! @!@ !@! @!@ !@! @!@ !@! @!@
@!@ !@! @!@ !@! @!@ !@! @!@ !@! @!@!!@!
!@! !!! !@! !!! !@! !!! !@! !!! !!@!@!
!!: !!! !!: !!! !!: !!! !!: !!! !!: :!!
:!: !:! :!: !:! :!: !:! :!: !:! :!: !:!
 :::: ::  :::: :: ::::: :: ::::: :: ::  :::
:: : :  :: : :  : : :  : : :  :  : :
usage: payload_manager.py [-h] [-l LINUX_CMD] [-w WINDOWS_CMD]
             [-d DOMAIN_SEARCH]
ddoor, crossplatform dns backdoor
optional arguments:
 -h, --help    show this help message and exit
 -l LINUX_CMD   Linux Command
 -w WINDOWS_CMD  Windows Command
 -d DOMAIN_SEARCH Domain to Check Commands On

```

-----