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Dumb - Dumain Bruteforcer

A tool to bruteforce dumains!

Dumb

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
    Also, if you want to test the newest code (beta) with improvements, use:
  • docker run -it giovanifss/dumb:beta "DUMB.dumain.com" subdomains.txt
    Note that the beta may be unstable or do not perform well

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.