SubActive: Cracking the Digital Code

6 months ago 35
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Tahir Mujawar

By Tahir Mujawar, Certified Ethical Hacker & Cyber Security Researcher

Hey there, I’m Tahir Mujawar, a cyber adventurer on a mission to unravel the secrets of the digital universe. Step into the realm of cyber exploration with SubActive, where every line of code uncovers hidden treasures in the vast digital landscape. Get ready to embark on a thrilling adventure into the depths of active subdomain discovery.

subActive by Tahir Mujawar
subActive by Tahir Mujawar

So, remember my previous script, “Precon”? It was all about passive subdomain discovery. Well, I’m back with something even more exciting — “SubActive”!

Picture this: “SubActive” is like the James Bond of scripts, always on the lookout for hidden secrets. It doesn’t just sit back and wait; oh no, it’s proactive. It uses techniques like DNS brute forcing with PureDNS, generates permutations with Gotator, and then resolves them again with PureDNS. It’s like peeling back layers of digital onion to reveal what’s underneath.

But that’s not all. “SubActive” dives headfirst into the web, probing with HTTPX and crawling URLs with Gospider. It’s like a digital detective, sifting through web content to uncover hidden subdomains. Once it finds them, it doesn’t stop there. It extracts and resolves them with PureDNS, shining a light on what was once in the shadows.

But wait, there’s more! “SubActive” goes beyond just subdomains. It delves into Google Analytics relationships, scans for TLS, CSP, and CNAME records, and even explores VHOSTs using tools like HostHunter and brute forcing techniques.

And the grand finale? Web probing with Unimap to scan common and open ports. It’s like checking every nook and cranny for potential vulnerabilities, leaving no stone unturned.

This is how subActive bash script looks like :

#!/bin/bash

# Define colors
RED=$(tput setaf 1)
GREEN=$(tput setaf 2)
YELLOW=$(tput setaf 11)
CYAN=$(tput setaf 6)
WHITE=$(tput setaf 15)
RESET=$(tput sgr0) # Reset color

# Function to display script usage
display_usage() {
echo "SubActive is an active subdomain enumeration bash script that discovers subdomains for websites using various tools."
echo ""
echo -e "Usage: $0 [options]"
echo ""
echo "Options:"
echo " -h, --help Display this help message"
echo " -d, --domain <name> Specify a single domain name to enumerate its subdomains"
echo " -sL, --subdomains-list Specify a file containing a list of subdomains"
echo " -pw, --wordlist <file> Specify a wordlist for PureDNS"
echo " -vw, --wordlist <file> Specify a wordlist for VHost"
echo " -p, --permuted-list <file> Specify a permutations list"
echo " -ip, --ip-addresses <file> Specify a file containing IP addresses"
echo " -r, --resolvers <file> Specify a file containing DNS resolvers"
echo " -o, --output <directory> Specify output directory (optional, if not specified, then a directory will be created with the domain name)"
echo ""
echo "Example: $0 -d example.com -sL <subdomain_list> -pw <puredns_wordlist> -vw <vhost_wordlist> -p permutations-list.txt -ip ip-addresses.txt -r fresh-resolvers.txt -o /path/to/output"
exit 1
}

# Function for logging
log() {
local log_file="recon.log"
local timestamp=$(date +"%Y-%m-%d %T")
echo "[$timestamp] $1" >> "$log_file"
local message="$1"
local color="$2"
}

# Default variables
domain=""
subdomains_list=""
puredns_wordlist=""
vhost_wordlist=""
permuted_list=""
ip_addresses=""
resolvers=""
output_dir=""
postfix="_subActive"

# Parse command line options
while [[ $# -gt 0 ]]; do
key="$1"
case $key in
-h|--help)
display_usage
;;
-d|--domain)
domain="$2"
shift 2
;;
-sL|--subdomains-list)
subdomains_list="$2"
shift 2
;;
-pw|--puredns-wordlist)
puredns_wordlist="$2"
shift 2
;;
-vw|--vhost-wordlist)
vhost_wordlist="$2"
shift 2
;;
-p|--permuted-list)
permuted_list="$2"
shift 2
;;
-ip|--ip-addresses)
ip_addresses="$2"
shift 2
;;
-r|--resolvers)
resolvers="$2"
shift 2
;;
-o|--output)
output_dir="$2"
shift 2
;;
*)
log "Unknown option: $1" "$RED"
display_usage
;;
esac
done

# Enable immediate exit on error
set -e

# Validate input parameters
if [ -z "$domain" ]; then
log "Error: You must specify a domain name." "$RED"
display_usage
elif [ -z "$subdomains_list" ]; then
log "Error: You must specify a subdomains list file." "$RED"
display_usage
elif [ -z "$puredns_wordlist" ]; then
log "Error: You must specify a wordlist file for PureDNS." "$RED"
display_usage
elif [ -z "$vhost_wordlist" ]; then
log "Error: You must specify a wordlist file for VHost." "$RED"
display_usage
elif [ -z "$permuted_list" ]; then
log "Error: You must specify a permutations list file." "$RED"
display_usage
elif [ -z "$ip_addresses" ]; then
log "Error: You must specify an IP addresses list file." "$RED"
display_usage
elif [ -z "$resolvers" ]; then
log "Error: You must specify a DNS resolvers list file." "$RED"
display_usage
fi

# Create output directory if not provided
if [ -z "$output_dir" ]; then
output_dir="$domain"
mkdir -p "$output_dir" || { log "Error: Could not create output directory: $output_dir" "$RED"; exit 1; }
else
mkdir -p "$output_dir" || { log "Error: Could not create output directory: $output_dir" "$RED"; exit 1; }
fi

COMMON_PORTS_WEB="81,300,591,593,832,981,1010,1311,1099,2082,2095,2096,2480,3000,3128,3333,4243,4567,4711,4712,4993,5000,5104,5108,5280,5281,5601,5800,6543,7000,7001,7396,7474,8000,8001,8008,8014,8042,8060,8069,8080,8081,8083,8088,8090,8091,8095,8118,8123,8172,8181,8222,8243,8280,8281,8333,8337,8443,8500,8834,8880,8888,8983,9000,9001,9043,9060,9080,9090,9091,9200,9443,9502,9800,9981,10000,10250,11371,12443,15672,16080,17778,18091,18092,20720,32000,55440,55672"

# Banner
echo ""
echo "███████╗██╗ ██╗██████╗ █████╗ ██████╗████████╗██╗██╗ ██╗███████╗"
echo "██╔════╝██║ ██║██╔══██╗██╔══██╗██╔════╝╚══██╔══╝██║██║ ██║██╔════╝"
echo "███████╗██║ ██║██████╔╝███████║██║ ██║ ██║██║ ██║█████╗ "
echo "╚════██║██║ ██║██╔══██╗██╔══██║██║ ██║ ██║╚██╗ ██╔╝██╔══╝ "
echo "███████║╚██████╔╝██████╔╝██║ ██║╚██████╗ ██║ ██║ ╚████╔╝ ███████╗"
echo "╚══════╝ ╚═════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═════╝ ╚═╝ ╚═╝ ╚═══╝ ╚══════╝"
echo ""

echo ">> ${RED}# Active subdomain discovery${RESET}"
echo -e ">>${YELLOW} # Created with ♥ by @TahirMujawar${RESET}"
echo ""
echo "__________________________♥ Scanning ♥________________________________"
echo ""

# DNS Bruteforcing
echo -e "${WHITE}Performing DNS bruteforcing...${RESET}"
log "Performing DNS bruteforcing"
puredns bruteforce "$puredns_wordlist" "$domain" -r "$resolvers" -w "$output_dir/dns-brute-results$postfix.txt" > /dev/null 2>&1
echo -e "${YELLOW}DNS bruteforcing completed!${RESET}"
log "DNS bruteforcing completed!"

# Generate permutations using Gotator
echo -e "${WHITE}Generating permutations for subdomains...${RESET}"
log "Generating permutations for subdomains"
gotator -sub "$subdomains_list" -perm "$permuted_list" -depth 1 -numbers 10 -mindup -adv -md > "$output_dir/permutations-for-sub$postfix.txt" > /dev/null 2>&1
echo "Permutation generation completed!"
log "Permutation generation completed"

# Perform DNS resolution using PureDNS
echo -e "${WHITE}Resolving DNS for generated permutations...${RESET}"
log "Resolving DNS for generated permutations"
puredns resolve "$output_dir/permutations-for-sub$postfix" -r "$resolvers" > "$output_dir/resolved-dns-results$postfix.txt" > /dev/null 2>&1
echo -e "${YELLOW}DNS resolution completed.${RESET}"
log "DNS resolution completed"

# JS/Source code scraping
echo -e "${WHITE}Web probing the subdomains...${RESET}"
log "Web probing the subdomains"
cat "$subdomains_list" | httpx -random-agent -retries 2 -no-color -o "$output_dir/httpx-probed$postfix.txt" > /dev/null 2>&1
log "Web probing completed"

echo -e "${WHITE}Crawling URLs using Gospider...${RESET}"
log "Crawling URLs using Gospider"
gospider -S "$output_dir/httpx-probed$postfix.txt" -t 100 -d 3 --sitemap --robots -w -r > "$output_dir/gospider$postfix.txt" > /dev/null 2>&1
echo -e "${WHITE}Cleaning the output...${RESET}"
log "Cleaning the output generated by Gospider"
sed -i '/^.\{2048\}./d' "$output_dir/gospider$postfix.txt" > /dev/null 2>&1
echo -e "${WHITE}Extracting subdomains from URLs...${RESET}"
log "Extracting subdomains from URLs"
cat "$output_dir/gospider$postfix.txt" | grep -Eo 'https?://[^ ]+' | sed 's/]$//' | unfurl -u domains | grep ".$domain$" | sort -u > "$output_dir/scrapped_subs$postfix.txt" > /dev/null 2>&1
echo -e "${WHITE}Resolving subdomains...${RESET}"
log "Resolving subdomains"
puredns resolve "$output_dir/scrapped_subs$postfix.txt" -r "$resolvers" -w "$output_dir/resolved-subs$postfix.txt" > /dev/null 2>&1
echo -e "${YELLOW}Scraping completed!${RESET}"
log "Scraping completed"

# Google Analytics
echo -e "${WHITE}Performing Google Analytics relationships scan...${RESET}"
log "Performing Google Analytics relationships scan"
analyticsrelationships --url "$domain" > "$output_dir/google_analytics$postfix.txt" > /dev/null 2>&1
echo -e "${YELLOW}Google Analytics scan completed!${RESET}"
log "Google Analytics scan completed"

# TSL, CNAME, CSP
echo -e "${WHITE}Finding subdomains using Cero${RESET}"
log "Finding subdomains using Cero"
cero "$domain" | sed 's/^*.//' | grep -e "\." | sort -u > "$output_dir/cero-output$postfix.txt" > /dev/null 2>&1
log "Finding subdomains using Cero completed"

echo -e "${WHITE}Finding subdomains using CSP${RESET}"
log "Finding subdomains using CSP"
cat "$subdomains_list" | httpx -csp-probe -status-code -retries 2 -no-color | anew "csp_probed$postfix.txt" | cut -d ' ' -f1 | unfurl -u domains | anew -q "$output_dir/csp_subdomains$postfix.txt" > /dev/null 2>&1

echo -e "${WHITE}Finding subdomains using CNAME${RESET}"
log "Finding subdomains using CNAME"
dnsx -retry 3 -cname -l "$subdomains_list" > "$output_dir/cname-subdomains$postfix.txt" > /dev/null 2>&1
echo -e "${YELLOW}Completed TCC!${RESET}"
log "TCC completed"

# VHOST
echo -e "${WHITE}Scanning using HostHunter...${RESET}"
log "Scanning using HostHunter"
hosthunter.py "$ip_addresses" > "$output_dir/hosthunter-output$postfix.txt" > /dev/null 2>&1

echo -e "${WHITE}Bruteforcing using Gobuster...${RESET}"
log "Bruteforcing using Gobuster"
gobuster vhost -u "$domain" -t 50 -w "$vhost_wordlist" -s "200,204,301,302,307,401,403" -o "$output_dir/vhost-brute-output$postfix.txt" > /dev/null 2>&1
echo -e "${YELLOW}VHOST scan completed!${RESET}"
log "VHOST scan completed"

echo -e "${WHITE}Running Unimap on common ports...${RESET}"
log "Running Unimap on common ports"
sudo unimap --fast-scan -f "$subdomains_list" --ports "$COMMON_PORTS_WEB" -k --url-output > "$output_dir/unimap_commonweb$postfix.txt" > /dev/null 2>&1

echo -e "${WHITE}Checking web applications running on open ports...${RESET}"
log "Checking web applications running on open ports"
cat "$output_dir/unimap_commonweb$postfix.txt" | httpx -random-agent -status-code -retries 2 -no-color | cut -d ' ' -f1 | tee "$output_dir/probed_common_ports$postfix.txt" > /dev/null 2>&1
echo -e "${YELLOW}Completed scanning common ports!${RESET}"
log "Scanning common ports completed"

# Web probing
echo -e "${WHITE}Running Unimap on common ports again...${RESET}"
log "Running Unimap on common ports again"
sudo unimap --fast-scan -f "$subdomains_list" --ports "$COMMON_PORTS_WEB" -k --url-output > "$output_dir/unimap_commonweb$postfix.txt" > /dev/null 2>&1

echo -e "${WHITE}Checking web applications running on open ports...${RESET}"
log "Checking web applications running on open ports"
cat "$output_dir/unimap_commonweb$postfix.txt" | httpx -random-agent -status-code -retries 2 -no-color | cut -d ' ' -f1 | tee "$output_dir/probed_common_ports$postfix.txt" > /dev/null 2>&1

echo -e "${WHITE}Concatenating all the files into all-subdomains$postfix${RESET}"
log "Concatenating all the files into all-subdomains$postfix"
cat *$postfix.txt | sort -u > "all-subdomains$postfix.txt"
log "All subdomains have been saved into all-subdomains$postfix.txt"

rm *$postfix.txt
log "Deleted all the files generated by tools"

echo -e "${YELLOW}Scan completed!${RESET}"
log "Scan completed"

# Output
if [ -z "$output_dir" ]; then
echo -e "${GREEN}Output saved to $domain directory${RESET}"
log "Output saved to $domain directory"
else
echo -e "${GREEN}Output saved to $output_dir${RESET}"
log "Output saved to $output_dir directory"
fi

Steps to use subActive :

Copy above code and paste it into any text editor and save it with name subActive.shOpen terminal where script is saved and hit following command :chmod +x subActive.shabove command gives executable permissions .Now time to run subActive with following command and by specifying following parameters:./subActive -d example.com -sL subdomains.txt -pw dns-wordlist-to-bruteforce -vw vhost-wordlist.txt -p permutations-list.txt -ip ip-addresses.txt -r resolvers.txt -o output-directory-nameAll the options are required to run the script.It also requires ip-addresses.txt file to perform VHOST scan so first get Ip-addresses about the target by performing reverse-domain on the target.
subActive by Tahir Mujawar

But hey, “SubActive” isn’t just a script, it’s a journey. It’s taken weeks of research and dedication to bring it to life. And your support means everything. So, don’t be shy — share, follow, and show some love. Your encouragement keeps this adventure going.

And if you’re hungry for more, don’t forget to check out “Precon,” its passive counterpart. Together, they make a formidable duo in your cybersecurity toolkit.

That’s all from the story of subActive.

Bye byeeee Hackers 👋 ! Happy Hacking 😌

subActive by Tahir Mujawar
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