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pivotnacci

Pivot into the internal network by deploying HTTP agents. Pivotnacci allows you to create a socks server which communicates with HTTP agents. The architecture looks like the following:

This tool was inspired by the great reGeorg. However, it includes some improvements:

  • Support for balanced servers
  • Customizable polling interval, useful to reduce detection rates
  • Auto drop connections closed by a server
  • Modular and cleaner code
  • Installation through pip
  • Password-protected agents

Supported socks protocols

  • [X] Socks 4
  • [X] Socks 5
    • [X] No authentication
    • [ ] User password
    • [ ] GSSAPI

Installation

From python packages:

pip3 install pivotnacci

From repository:

git clone https://github.com/blackarrowsec/pivotnacci.git
cd pivotnacci/
pip3 install -r requirements.txt # to avoid installing on the OS
python3 setup.py install # to install on the OS

Usage

  1. Upload the required agent (php, jsp or aspx) to a webserver
  2. Start the socks server once the agent is deployed
  3. Configure proxychains or any other proxy client (the default listening port for pivotnacci socks server is 1080)
$ pivotnacci -h
usage: pivotnacci [-h] [-s addr] [-p port] [--verbose] [--ack-message message]
                  [--password password] [--user-agent user_agent]
                  [--header header] [--proxy [protocol://]host[:port]]
                  [--type type] [--polling-interval milliseconds]
                  [--request-tries number] [--retry-interval milliseconds]
                  url

Socks server for HTTP agents

positional arguments:
  url                   The url of the agent

optional arguments:
  -h, --help            show this help message and exit
  -s addr, --source addr
                        The default listening address (default: 127.0.0.1)
  -p port, --port port  The default listening port (default: 1080)
  --verbose, -v
  --ack-message message, -a message
                        Message returned by the agent web page (default:
                        Server Error 500 (Internal Error))
  --password password   Password to communicate with the agent (default: )
  --user-agent user_agent, -A user_agent
                        The User-Agent header sent to the agent (default:
                        pivotnacci/0.0.1)
  --header header, -H header
                        Send custom header. Specify in the form 'Name: Value'
                        (default: None)
  --proxy [protocol://]host[:port], -x [protocol://]host[:port]
                        Set the HTTP proxy to use.(Environment variables
                        HTTP_PROXY and HTTPS_PROXY are also supported)
                        (default: None)
  --type type, -t type  To specify agent type in case is not automatically
                        detected. Options are ['php', 'jsp', 'aspx'] (default:
                        None)
  --polling-interval milliseconds
                        Interval to poll the agents (for recv operations)
                        (default: 100)
  --request-tries number
                        The number of retries for each request to an agent. To
                        use in case of balanced servers (default: 50)
  --retry-interval milliseconds
                        Interval to retry a failure request (due a balanced
                        server) (default: 100)

Examples

Using an agent with password s3cr3t (AGENT_PASSWORD variable must be modified at the agent side as well):

pivotnacci  https://domain.com/agent.php --password "s3cr3t"

Using a custom HTTP Host header and a custom CustomAgent User-Agent:

pivotnacci  https://domain.com/agent.jsp -H 'Host: vhost.domain.com' -A 'CustomAgent'

Setting a different agent message 418 I'm a teapot (ACK_MESSAGE variable must be modified at the agent side as well):

pivotnacci https://domain.com/agent.aspx --ack-message "418 I'm a teapot"

Reduce detection rate (e.g. WAF) by setting the polling interval to 2 seconds:

pivotnacci  https://domain.com/agent.php --polling-interval 2000

Author

Eloy Pérez (@Zer1t0) [ www.blackarrow.net - www.tarlogic.com ]

License

All the code included in this project is licensed under the terms of the GNU AGPLv3 license.


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