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pync pync



Name

pync - arbitrary TCP and UDP connections and listens (Netcat for Python).

Synopsis

Unix
pync [-46bCDdhklnruvz] [-c string] [-e filename] [-I length]
     [-i interval] [-O length] [-P proxyuser] [-p source_port]
     [-q seconds] [-s source] [-T keyword] [-w timeout]
     [-X proto] [-x addr[:port]]
     [-Y pyfile] [-y pycode] [dest] [port]
Windows
py -m pync [-46bCDdhklnruvz] [-c string] [-e filename] [-I length]
           [-i interval] [-O length] [-P proxyuser] [-p source_port]
           [-q seconds] [-s source] [-T keyword] [-w timeout]
           [-X proto] [-x addr[:port]]
           [-Y pyfile] [-y pycode] [dest] [port]
Python
import pync
args = '''[-46bCDdhklnruvz] [-c string] [-e filename] [-I length]
          [-i interval] [-O length] [-P proxyuser] [-p source_port]
          [-q seconds] [-s source] [-T keyword] [-w timeout]
          [-X proto] [-x addr[:port]]
          [-Y pyfile] [-y pycode] [dest] [port]'''
pync.run(args, stdin, stdout, stderr)

Description

Inspired by the Black Hat Python book, the goal of pync is to create an easy to use library that provides Netcat-like functionality for Python developers.

Common uses include:

Installation

pync should work on any system with Python installed (version 2.7 or higher).

Use Python's pip command to install pync straight from github:

Unix
python -m pip install https://github.com/bw0rth/pync/archive/main.zip
Windows
py -m pip install https://github.com/bw0rth/pync/archive/main.zip

Usage

Options

Option Description
-4 Use IPv4 addresses only
-6 Use IPv6 addresses only
-b Allow broadcast
-C Send CRLF as line-ending
-c string specify shell commands to exec after connect (use with caution).
-D Enable the debug socket option
-d Detach from stdin
-e filename specify filename to exec after connect (use with caution).
-h, --help show available options and exit.
-I length TCP receive buffer length
-i secs Delay interval for lines sent, ports scanned
-k Keep inbound sockets open for multiple connects
-l Listen mode, for inbound connects
-n Suppress name/port resolutions
-O length TCP send buffer length
-P proxy_username Username for proxy authentication
-p source_port Specify local port for remote connects
-q seconds quit after EOF on stdin and delay of seconds
-r Randomize remote ports
-s source Local source address
-T toskeyword Set IP Type of Service
-u UDP mode [default: TCP]
-v Verbose
-w secs Timeout for connects and final net reads
-X proxy_protocol Proxy protocol: "4", "5" (SOCKS) or "connect"
-x proxy_address[:port] Specify proxy address and port
-Y pyfile specify python file to exec after connect (use with caution).
-y pycode specify python code to exec after connect (use with caution).
-z Zero-I/O mode [used for scanning]
dest The destination host name or ip to connect or bind to
port The port number to connect or bind to

API Reference

Examples

Example Description
chat.py Simple chat protocol with a custom username
upload.py Simple file upload (use with caution).
download.py Simple file download (use with caution).
echo.py Echo client/server
proxy.py Simple TCP proxy server
pyshell.py Reverse or bind python interpreter shell (use with caution).
scan.py Simple TCP connect port scanner
shell.py Reverse or bind remote system shell (use with caution).

See Also

Caveats

UDP port scans will always succeed (i.e report the port as open), rendering the -uz combination of flags relatively useless.