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URLCrazy v0.4 released

Download: urlcrazy-0.4.tar.gz
Latest Version: 0.4, September 2011
License: GPLv2
Author: Andrew Horton (urbanadventurer)


URLCrazy enables the study of domainname typos and URL hijacking. URLCrazy is a domainname typo generator.
Use Cases:

*Detect typo squatters cashing in on your domain name
*Protect your brand by registering popular typos
*Identify typo domain names that will get traffic intended for a more popular domain

* Generates 13 types of typos
* Knows over 8000 common misspellings
* Multiple keyboard layouts
* Check if a typo is a valid domain
* Test if domain typos are in use
* Estimate popularity of a typo
URLCrazy requires Linux and the Ruby interpreter.


Usage: ./urlcrazy [options] domainname
URLCrazy generates and tests domainname typo permutations to study typo squatting / url hijacking.
URLCrazy version 0.4 by Andrew Horton (urbanadventurer)
Homepage: http://www.morningstarsecurity.com/research/urlcrazy

Typo types :
Character Omission, Character Repeat, Adjacent Character Swap, Adjacent Character Replacement,
Adjacent Character Insertion, Missing Dot, Strip Dashes, Singular or Pluralise, Common Misspellings,
Vowel Swaps, Homophones, Bit Flipping (Cosmic Rays), Wrong Top Level Domain, and Wrong Second Level

-k, --keyboard=LAYOUT Options are: qwerty, azerty, qwertz, dvorak (default: qwerty)
-p, --no-popularity Do not check popularity
-r, --no-resolve Do not resolve domain names
-i, --show-invalid Show invalid domain names
-V, --version Print version information. This version is 0.4

Screen shot

Types of Typos Supported

Character Omission
These typos are created by leaving out a letter of the domain name, one letter at a time. For example, www.goole.com and www.gogle.com

Character Repeat
These typos are created by repeating a letter of the domain name. For example, www.ggoogle.com and www.gooogle.com

Adjacent Character Swap
These typos are created by swapping the order of adjacent letters in the domain name. For example, www.googel.com and www.ogogle.com

Adjacent Character Replacement
These typos are created by replacing each letter of the domain name with letters to the immediate left and right on the keyboard. For example, www.googke.com and www.goohle.com

Adjacent Character Insertion
These typos are created by inserting letters to the immediate left and right on the keyboard of each letter. For example, www.googhle.com and www.goopgle.com

Missing Dot
These typos are created by omitting a dot from the domainname. For example, wwwgoogle.com and www.googlecom

Strip Dashes
These typos are created by omitting a dash from the domainname. For example, www.domain-name.com becomes www.domainname.com

Singular or Pluralise
These typos are created by making a singular domain plural and vice versa. For example, www.google.com becomes www.googles.com and www.games.co.nz becomes www.game.co.nz

Common Misspellings
Over 8000 common misspellings from Wikipedia. For example, www.youtube.com becomes www.youtub.com and www.abseil.com becomes www.absail.com

Vowel Swapping
Swap vowels within the domain name except for the first letter. For example, www.google.com becomes www.gaagle.com.

Over 450 sets of words that sound the same when spoken. For example, www.base.com becomes www.bass.com.

Wrong Top Level Domain
For example, www.trademe.co.nz becomes www.trademe.co.nz and www.google.com becomes www.google.org
Uses the 19 most common top level domains.

Wrong Second Level Domain
Uses an alternate, valid second level domain for the top level domain.
For example, www.trademe.co.nz becomes www.trademe.ac.nz and www.trademe.iwi.nz

Supported Keyboard Layouts

Keyboard layouts supported are:

Is the domain valid?

UrlCrazy has a database of valid top level and second level domains. This information has been compiled from Wikipedia and domain registrars. We know whether a domain is valid by checking if it matches toplevel and second level domains. For example, www.trademe.co.bz is a valid domain in Belize which allows any second level domain registrations but www.trademe.xo.nz isn’t because xo.nz isn’t an allowed second level domain in New Zealand.

Popularity Estimate

We can estimate the relative popularity of a typo by measuring how often that typo appears on webpages. Querying goole.com for the number of search results for a typo gives us a indication of how popular a typo is.

The drawback of this approach is that you need to manually identify and omit legitimate domains such as googles.com

For example, consider the following typos for google.com.

25424 gogle.com
24031 googel.com
22490 gooogle.com
19172 googles.com
19148 goole.com
18855 googl.com
17842 ggoogle.com

IP Address

An IP address for a typo domainname indicates it is in use.
Tip: An IP repeating for multiple typos or IPs in a close range shows common ownership. For example, gogle.com, gogole.com and googel.com all resolve to which is owned by Google.

Country Code Database

2nd level domains here:

See Also

Strider is tool with similar aims and is produced by Microsoft http://research.microsoft.com/csm/strider/


UrlCrazy requires ruby. If you are using Ubuntu or Debian try:
$ sudo apt-get install ruby.


Authored by Andrew Horton (urbanadventurer). Andrew is a security consultant for Security-Assessment.com
Thanks to Ruby on Rails for Inflector which allowing plural and singular permutations.

Thanks to Wikipedia for the set of common misspellings and homophones.

nb : morningstarsecurity

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