Active
Active Resources
The ideia behind an active subdomain recon is to bruteforce subdomain in order to find anything that is valid.
Get resolvers at:
# https://github.com/proabiral/Fresh-Resolvers
Pure DNS
# https://github.com/d3mondev/puredns
puredns resolve subdomains.txt -r resolvers.txt --write resolved_dns_domains
puredns bruteforce subdomains.txt example.com -r resolvers.txt --write resolved_dns_domains
Permutations
# https://github.com/Josue87/gotator
gotator -sub subdomains/subdomains.txt -perm permutations_list.txt -depth 1 -numbers 10 -mindup -adv -md