HTTPLoot | An Automated Tool Which Can Simultaneously Crawl, Fill Forms, Trigger Error/Debug Pages

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Ruchika oberoi

Staff member
Mar 27, 2022

An automated tool which can simultaneously crawl, fill forms, trigger error/debug pages and “loot” secrets out of the client-facing code of sites.


To use the tool, you can grab any one of the pre-built binaries from the section of the repository. If you want to build the source code yourself, you will need Go > 1.16 to build it. Simply running go build will output a usable binary for you.

Additionally you will need two json files ( and ) alongwith the binary which you can get from the repo itself. Once you have all 3 files in the same folder, you can go ahead and fire up the tool.

Video demo:

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Here is the help usage of the tool:

$ ./httploot --help _____ )=( / \ H T T P L O O T ( $ ) v0.1 ___/ [+] HTTPLoot by RedHunt Labs - A Modern Attack Surface (ASM) Management Company [+] Author: Pinaki Mondal (RHL Research Team) [+] Continuously Track Your Attack Surface using . Usage of ./httploot: -concurrency int Maximum number of sites to process concurrently (default 100) -depth int Maximum depth limit to traverse while crawling (default 3) -form-length int Length of the string to be randomly generated for filling form fields (default 5) -form-string string Value with which the tool will auto-fill forms, strings will be randomly generated if no value is supplied -input-file string Path of the input file containing domains to process -output-file string CSV output file path to write the results to (default “httploot-results.csv”) -parallelism int Number of URLs per site to crawl parallely (default 15) -submit-forms Whether to auto-submit forms to trigger debug pages -timeout int The default timeout for HTTP requests (default 10) -user-agent string User agent to use during HTTP requests (default “Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:98.0) Gecko/20100101 Firefox/98.0”) -verify-ssl Verify SSL certificates while making HTTP requests -wildcard-crawl Allow crawling of links outside of the domain being scanned

Concurrent scanning​

There are two flags which help with the concurrent scanning:

  • -concurrency: Specifies the maximum number of sites to process concurrently.
  • -parallelism: Specifies the number of links per site to crawl parallely.
Both -concurrency and -parallelism are crucial to performance and reliability of the tool results.


The crawl depth can be specified using the -depth flag. The integer value supplied to this is the maximum chain depth of links to crawl grabbed on a site.

An important flag -wildcard-crawl can be used to specify whether to crawl URLs outside the domain in scope.

NOTE: Using this flag might lead to infinite crawling in worst case scenarios if the crawler finds links to other domains continuously.

Filling forms​

If you want the tool to scan for debug pages, you need to specify the -submit-forms argument. This will direct the tool to autosubmit forms and try to trigger error/debug pages once a tech stack has been identified successfully.

If the -submit-forms flag is enabled, you can control the string to be submitted in the form fields. The -form-string specifies the string to be submitted, while the -form-length can control the length of the string to be randomly generated which will be filled into the forms.

Network tuning​

Flags like:

  • -timeout - specifies the HTTP timeout of requests.
  • -user-agent - specifies the user-agent to use in HTTP requests.
  • -verify-ssl - specifies whether or not to verify SSL certificates.


Input file to read can be specified using the -input-file argument. You can specify a file path containing a list of URLs to scan with the tool. The -output-file flag can be used to specify the result output file path – which by default goes into a file called httploot-results.csv.

Further Details​

Further details about the research which led to the development of the tool can be found on our .

License & Version​

The tool is licensed under the MIT license. See LICENSE.

Currently the tool is at v0.1.


The RedHunt Labs Research Team would like to extend credits to the creators & maintainers of for the regular expressions provided by them in their repository.


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An automated tool which can simultaneously crawl, fill forms, trigger error/debug pages and "loot" secrets out of the client-facing code of sites. - GitHub - redhuntlabs/HTTPLoot: An auto...