Information Gathering

Urlhunter – Recon Tool That Allows Searching On URLs That Are Exposed

January 4, 2021
3 Min Read
Urlhunter - A Recon Tool That Allows Searching On URLs That Are Exposed Via Shortener Services

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urlhunter is a recon tool that allows searching on URLs that are exposed via shortener services such as bit.ly and goo.gl. The project is written in Go.

How?

A group named URLTeam (kudos to them) are brute forcing the URL shortener services and publishing matched results on a daily basis. urlhunter downloads their collections and lets you analyze them.

Installation

From Binary

You can download the pre-built binaries from the releases page and run. For example:

tar xzvf urlhunter_0.1.0_Linux_amd64.tar.gz

./urlhunter --help

From Source

  1. Install Go on your system
  2. Run: go get -u github.com/utkusen/urlhunter

Note For The Windows Users: urlhunter uses XZ Utils which is pre-installed on Linux and macOS systems. For Windows systems, you need to download it from https://tukaani.org/xz/

Usage

urlhunter requires 3 parameters to run: -keywords, -date and -o.

For example: urlhunter -keywords keywords.txt -date 2020-11-20 -o out.txt

-keywords

You need to specify the txt file that contains keywords to search on URLs. Keywords must be written line by line. You have three different ways to specify keywords:

Single Keyword: urlhunter will search the given keyword as a substring. For example:

acme.com keyword will both match https://acme.com/blabla and https://another.com/?referrer=acme.com

Multiple Keywords: urlhunter will search the given keywords with an AND logic. Which means, a URL must include all the provided keywords. Keywords must be separated with , character. For example:

acme.com,admin will match https://acme.com/secret/adminpanel but won’t match https://acme.com/somethingelse

Regex Values: urlhunter will search for the given regex value. In the keyword file, the line that contains a regular expression formula must start with regex string. The format is: regex REGEXFORMULA. For example:

regex 1d{10} will match https://example.com/index.php?id=12938454312 but won’t match https://example.com/index.php?id=abc223

-date

urlhunter downloads the archive files of the given date(s). You have three different ways to specify the date:

Latest: urlhunter will download the latest archive. -date latest

Single Date: urlhunter will download the archive of the given date. Date format is YYYY-MM-DD.

For example: -date 2020-11-20

Date Range: urlhunter will download all the archives between given start and end dates.

For example: -date 2020-11-10:2020-11-20

-o

You can specify the output file with -o parameter. For example -o out.txt

Demonstration Video

 

[youtube https://www.youtube.com/watch?v=Ct086YRm7i8&w=560&h=315]

 

The Speed Problem

Archive.org throttles the speed when downloading files. Therefore, downloading an archive takes more time than usual. As a workaround, you can download the archives via Torrent and put them under the archive/ folder which is located in the same directory with the urlhunter’s binary. The directory tree will look like:

|-urlhunter
|---urlhunter(binary)
|---archive
|-----urlteam_2020-11-20-11-17-04
|-----urlteam_2020-11-17-11-17-04

Example Use Cases

urlhunter might be useful for cyber intelligence and bug bounty purposes. For example:

docs.google.com/a/acme.com drive.google.com/a/acme.com keywords allow you to find public Google Docs&Drive share links of Acme company.

acme.com,password_reset_token keyword may allow you to find the working password reset tokens of acme.com

trello.com allows you to find public Trello addresses.

Thanks

Special thanks to Samet(@cyanpiny) who gave me the idea of this tool.

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