A tool to bruteforce "dumains"!

How DUMB works:
Dumb works with a masked dumain for substitution. The dumain can have as many masks as you want as long as you pass the according wordlists. For example:

Bruteforcing subdumains:
Using the mask DUMB.dumain.com and the following wordlists:

www
 ftp
 backoffice

Dumb will generate the following dumains for bruteforce:

www.dumain.com
 ftp.dumain.com
 backoffice.dumain.com

For subdumains, you can only pass dumain.com and dumb will understand as DUMB.dumain.com.

Bruteforcing domain endings:
Using the same principle, you can pass as mask dumain.DUMB with the following wordlist:

com
 net
 org

Dumb will generate the following dumains for bruteforce:

dumain.com
 dumain.net
 dumain.org

Bruteforcing everything:
To bruteforce everything you can pass the mask as "DUMB.DUMB.DUMB" passing three wordlists:

wordlist1   wordlist2   wordlist3
 www         foo         com
 ftp         bar         net

Dumb will generate:

www.foo.com
 ftp.foo.com
 www.bar.com
 ftp.bar.com
 www.foo.net
 ftp.foo.net
 www.bar.net
 ftp.bar.net

Usage:
Dumb receives the dumain mask as first parameter and the wordlists following. The number of wordlists must match the number of masks in the dumain. For example:

• One mask:
  

  $ dumb "DUMB.dumain.com" wordlists/foo.txt

• Two masks:
  

  $ dumb "DUMB.dumain.DUMB" wordlists/foo.txt wordlists/bar.txt

• Several masks:
  

  $ dumb "DUMB-DUMB-DUMB_DUMB.DUMB.DUMB" wordlists/foo_1.txt ... wordlists/foo_6.txt

Docker:
If you don't want to build from source, you can use the docker version:

• docker run -it giovanifss/dumb "DUMB.dumain.com" subdomains.txt

All the wordlists in wordlists/ are inside the docker container in filesystem root /, this means that you can call dumb passing the wordlists name:

• docker run -it giovanifss/dumb "DUMB.dumain.com" (subdomains.txt|subdominios.txt|domain-endings.txt)

To work with local wordlists that aren't present inside the container, you can use docker volumes:

docker run -v local/wordlist.txt:/opt/wordlist.txt -it giovanifss/dumb "DUMB.dumain.com" /opt/wordlist.txt

Building from source:
If you want to build from source you will need stack:

• Enter in the project directory and run $ stack build.
• To execute:

  $ stack exec dumb "DUMB.dumain.com" wordlists/subdomains.txt

Note that some older versions of stack have some problems to build the project (Debian stack package, for example). Make sure you get the latest stack version.

Future features:
Future planned features are:

• Argument parser support, for better configuration of the tool execution;
• Post analysis of found dumains, generating statistics and metrics;

Performance:
The tool performance will highly depend on your network connection. Usually, it should take less then 10 seconds to finish a subdumain burteforce with the wordlists/subdomains.txt wordlist.
If you have a good connection and think that the tool is slow, try changing the 1000 in the splitDomains function call, e.g. mapM_ (MP.mapM_ (resolve rs)) (splitDomains 1000 allDomains), to a higher value.
Alternatively, you can change mapM_ (MP.mapM_ (resolve rs)) (splitDomains 1000 allDomains) to MP.mapM_ (resolve rs) allDomains to execute all the requests in parallel.