vscan.sh

#!/bin/bash

# Define color codes for better output readability
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
NC='\033[0m' # No Color

# Function to display the menu
display_menu() {
    echo -e "${GREEN}==============================${NC}"
    echo -e "${GREEN}  Simple Vulnerability Scan  ${NC}"
    echo -e "${GREEN}==============================${NC}"
    echo "1. Network Scan (using Nmap)"
    echo "2. Open Port Check (using Netcat)"
    echo "3. File Integrity Check (using md5sum)"
    echo "4. Check Bash Vulnerability (Shellshock)"
    echo "5. Exit"
    echo -e "${GREEN}==============================${NC}"
}

# Function for Network Scan using Nmap
network_scan() {
    echo -e "${YELLOW}Starting Network Scan...${NC}"
    echo "Enter target IP range (e.g., 192.168.1.0/24):"
    read ip_range

    # Check if Nmap is installed
    if ! command -v nmap &> /dev/null; then
        echo -e "${RED}Error: Nmap is not installed. Please install Nmap and try again.${NC}"
        return 1
    fi

    echo -e "${YELLOW}Scanning $ip_range...${NC}"
    nmap -sP "$ip_range" # -sP for ping scan, customize for other scan types
    echo -e "${GREEN}Network scan complete.${NC}"
}

# Function for Open Port Check using Netcat
open_port_check() {
    echo -e "${YELLOW}Starting Open Port Check...${NC}"
    echo "Enter target IP address or hostname:"
    read target_ip

    echo -e "${YELLOW}Checking open ports on $target_ip...${NC}"
    # Adjust the port range (e.g., 1-1023) based on your needs
    nc -zv "$target_ip" 1-1023 2>&1 | grep succeeded
    echo -e "${GREEN}Open port check complete.${NC}"
}

# Function for File Integrity Check using md5sum
file_integrity_check() {
    echo -e "${YELLOW}Starting File Integrity Check...${NC}"
    echo "Enter file path:"
    read file_path

    if [ ! -f "$file_path" ]; then
        echo -e "${RED}Error: File not found.${NC}"
        return 1
    fi

    original_checksum=$(md5sum "$file_path" | awk '{print $1}')
    echo "Original Checksum: $original_checksum"

    echo -e "${YELLOW}Performing file integrity check...${NC}"
    current_checksum=$(md5sum "$file_path" | awk '{print $1}')

    if [ "$original_checksum" == "$current_checksum" ]; then
        echo -e "${GREEN}File integrity is intact.${NC}"
    else
        echo -e "${RED}Warning: File integrity check failed!${NC}"
    fi
}

# Function to check for Bash Vulnerability (Shellshock)
check_bash_vulnerability() {
    echo -e "${YELLOW}Checking for Bash vulnerability (Shellshock)...${NC}"
    # This command tests for the Shellshock vulnerability
    result=$(env x='() { :;}; echo VULNERABLE' bash -c :)

    if echo "$result" | grep -q "VULNERABLE"; then
        echo -e "${RED}System is potentially vulnerable to Shellshock.${NC}"
    else
        echo -e "${GREEN}System appears to be patched against Shellshock.${NC}"
    fi
}

# Main script loop
while true; do
    display_menu
    echo "Enter your choice:"
    read choice

    case "$choice" in
        1)
            network_scan
            ;;
        2)
            open_port_check
            ;;
        3)
            file_integrity_check
            ;;
        4)
            check_bash_vulnerability
            ;;
        5)
            echo -e "${YELLOW}Exiting...${NC}"
            exit 0
            ;;
        *)
            echo -e "${RED}Invalid choice. Please enter a number from the menu.${NC}"
            ;;
    esac

    echo # Add an empty line for readability
    read -rp "Press Enter to continue..."
done