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mksub

Make subdomains using a wordlist

Read a wordlist file and generate subdomains for given domain or list of domains. Input from wordlist file is lowercased and unique words are processed. Additionally, wordlist can be filtered using regex.

Usage of mksub:
  -d string
        Input domain
  -df string
        Input domain file, one domain per line
  -l int
        Subdomain level to generate (default 1)
  -o string
        Output file (stdout will be used when omitted)
  -r string
        Regex to filter words from wordlist file
  -silent
        Skip writing generated subdomains to stdout (faster) (default true)
  -t int
        Number of threads for every subdomain level (default 100)
  -w string
        Wordlist file

Example

wordlist.txt
dev
DEV
*
foo.bar
prod

> go run mksub.go -d example.com -l 2 -w input.txt -r "^[a-zA-Z0-9\.-_]+$"
dev.example.com
foo.bar.example.com
prod.example.com
foo.bar.dev.example.com
prod.dev.example.com
dev.dev.example.com
dev.foo.bar.example.com
foo.bar.foo.bar.example.com
prod.foo.bar.example.com
dev.prod.example.com
foo.bar.prod.example.com
prod.prod.example.com