Logo by Xinh Studio @Noun Project

Theory

Bitsquatting refers to the registration of a domain names one bit different than a popular domain.
It is a form of Cybersquatting.

The overall process is as follows:

1. Trim HTTPS/HTTP protocol and plit the URL into domain name and extension
2. Transform both strings into their binary equivalents
3. Generate all the 1-bit permutations of each bitstring
4. Transform the bitstrings back to characters
5. Filter out any non URL valid strings

Usage

1. Compile: make bitsquat
2. Run:

   ./bitsquat --verbose https://foo.com
   Target Domain: https://foo.com
   Domain Name: foo        Domain extension: com
   foo:    011001100110111101101111
   com:    011000110110111101101101
   doo.com
   goo.com
   fOo.com
   fgo.com
   fko.com
   fmo.com
   fno.com
   foO.com
   ...

Documentation

$ ./bitsquat --help
Usage: bitsquat [OPTION...] [URL]
BitSquatter outputs all valid domains different by 1 bit from the input URL.

Example: bitsquat --verbose foobar.com

  -e, --extension-too        Generate URL permutations for the extension too
  -v, --verbose              Display domain name and extension bitstrings
  -?, --help                 Give this help list
      --usage                Give a short usage message
  -V, --version              Print program version