Jetto Cyber Security Forum

Welcome!

Welcome to the Jetto Cyber Security Forum! Here, we share knowledge on how to write attack tools and scripts in the field of cyber security. Feel free to share your experiences and insights to enrich our community.

Introduction

In the world of cyber security, learning how to write attack tools and scripts is a crucial step towards becoming an expert. These tools and scripts are typically developed using various programming languages, each offering unique advantages. Below, you will find information on the most commonly used languages and examples of basic tools that can be written in these languages.

1. Python

Why Python? Python is a powerful programming language that is easy to learn. It offers extensive library support and enables rapid prototyping, making it popular in the cyber security field.

Use Cases:

• Penetration Testing Tools: Metasploit Framework, Scapy
• Web Application Attacks: SQL Injection, XSS
• Network Analysis and Attacks: Packet sniffer creation, DoS attack tools

Sample Script: Simple Port Scanner

import socket
def port_scan(ip, port):
   sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
   sock.settimeout(1)
   result = sock.connect_ex((ip, port))
   if result == 0:
       print(f"Port {port} is open")
   else:
       print(f"Port {port} is closed")
   sock.close()
ip = "192.168.1.1"
for port in range(1, 1025):
   port_scan(ip, port)

2. Bash

Why Bash? Bash is a widely used command-line language in Unix-based systems. It is particularly strong in system management and automation tasks.

Use Cases:

• Network Scanning and Analysis: Automating tools like Nmap
• File Manipulation and Analysis: Log analysis, data collection
• Automated Attacks: Brute-force attacks, automatic backup scripts

Sample Script: Simple Ping Scanner

#!/bin/bash
for ip in $(seq 1 254); do
   ping -c 1 192.168.1.$ip | grep "64 bytes" &
done

3. PowerShell

Why PowerShell? PowerShell is a powerful command-line tool in Windows environments and is frequently used by system administrators. It offers deep capabilities for managing Windows systems.

Use Cases:

• System Information Gathering: User information, processes
• Windows Security Testing: Checking Windows security policies
• Network and System Attacks: Reverse shell, data exfiltration

Sample Script: Simple User Information Gatherer

Get-LocalUser | Format-Table Name,Enabled,LastLogon

4. C/C++

Why C/C++? C and C++ are low-level programming languages ideal for performance-critical applications. They are particularly used for tools and exploits requiring high performance.

Use Cases:

• Network Attacks: Packet injection, raw socket programming
• Exploit Development: Buffer overflow exploits
• Rootkit and Malware: Advanced malware development

Sample Script: Simple Raw Socket Packet Sender (C)

#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <arpa/inet.h>
int main() {
   int sock;
   struct sockaddr_in server;
   char *message;
   sock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
   if (sock == -1) {
       perror("Could not create socket");
       return 1;
   }
   server.sin_addr.s_addr = inet_addr("192.168.1.1");
   server.sin_family = AF_INET;
   message = "GET / HTTP/1.1\r\n\r\n";
   if (sendto(sock, message, strlen(message), 0, (struct sockaddr *)&server, sizeof(server)) < 0) {
       perror("Send failed");
       return 1;
   }
   printf("Data sent\n");
   return 0;
}

Conclusion

Writing effective tools and scripts in cyber security involves knowing the right programming languages and techniques. Languages like Python, Bash, PowerShell, and C/C++ offer powerful solutions for different needs. At Jetto Cyber Security Forum, we encourage you to share your knowledge and experiences to help us build a more secure and informed community.

Forum Rules:

• Be respectful and constructive.
• Cite your sources when sharing information.
• Do not encourage illegal activities.

Happy foruming!