bscan is a command-line utility to perform active information gathering and service enumeration.
At its core, bscan asynchronously spawns processes of well-known scanning utilities, repurposing scan results into highlighted console output and a well-defined directory structure.
bscan was written to be run on Kali Linux, but there is nothing inherently preventing it from running on any OS with the appropriate tools installed.
Download the latest packaged version from PyPI:
pip install bscan
Or get the bleeding-edge version from version control:
pip install https://github.com/welchbj/bscan/archive/master.tar.gz
bscan has a wide variety of configuration options which can be used to tune scans to your needs. Here’s a quick example:
$ bscan \ > --max-concurrency 3 \ > --patterns [Mm]icrosoft \ > --status-interval 10 \ > --verbose-status \ > scanme.nmap.org
What’s going on here?
--max-concurrency 3means that no more than 3 concurrent scan subprocesses will be run at a time
--patterns [Mm]icrosoftdefines a custom regex pattern with which to highlight matches in the generated scan output
bscanto print runtime status updates every 10 seconds
--verbose-statusmeans that each of these status updates will print details of all currently-running scan subprocesses
scanme.nmap.orgis the host upon which we want to enumerate
bscan also relies on some additional configuration files. The default files can be found in the bscan/configuation directory and serve the following purposes:
patterns.txtspecifies the regex patterns to be highlighted in console output when matched with scan output
required-programs.txtspecifies the installed programs that bscan plans on using
port-scans.tomldefines the port-discovering scans to be run on the target(s), as well as the regular expressions used to parse port numbers and service names from scan output
service-scans.tomldefines the scans be run on the target(s) on a per-service basis
Here’s what you should see when running bscan –help:
usage: bscan [OPTIONS] targets _ | |__ ___ ___ __ _ _ __ | '_ \/ __|/ __/ _` | '_ \ | |_) \__ \ (__ (_| | | | | |_.__/|___/\___\__,_|_| |_| an asynchronous service enumeration tool positional arguments: targets the targets and/or networks on which to perform enumeration optional arguments: -h, --help show this help message and exit --brute-pass-list F filename of password list to use for brute-forcing --brute-user-list F filename of user list to use for brute-forcing --cmd-print-width I the maximum integer number of characters allowed when printing the command used to spawn a running subprocess (defaults to 80) --config-dir D the base directory from which to load the configuration files; required configuration files missing from this directory will instead be loaded from the default files shipped with this program --hard force overwrite of existing directories --max-concurrency I maximum integer number of subprocesses permitted to be running concurrently (defaults to 20) --no-program-check disable checking the presence of required system programs --no-file-check disable checking the presence of files such as configured wordlists --no-service-scans disable running scans on discovered services --output-dir D the base directory in which to write output files --patterns [ [ ...]] regex patterns to highlight in output text --ping-sweep enable ping sweep filtering of hosts from a network range before running more intensive scans --quick-only whether to only run the quick scan (and not include the thorough scan over all ports) --qs-method S the method for performing the initial TCP port scan; must correspond to a configured port scan --status-interval I integer number of seconds to pause in between printing status updates; a non-positive value disables updates (defaults to 30) --ts-method S the method for performing the thorough TCP port scan; must correspond to a configured port scan --udp whether to run UDP scans --udp-method S the method for performing the UDP port scan; must correspond to a configured port scan --verbose-status whether to print verbose runtime status updates, based on frequency specified by `--status-interval` flag --version program version --web-word-list F the wordlist to use for scans
The main bscan program ships with two utility programs (bscan-wordlists and bscan-shells) to make your life a little easier when looking for wordlists and trying to open reverse shells.
- bscan-wordlists is a program designed for finding wordlist files on Kali Linux.
- bscan-shells is a program that will generate a variety of reverse shell one-liners with target and port fields populated for you.
bscan is intended for educational purposes and events such as CTFs only and should never be run on machines and/or networks without explicit prior consent. This code is released under the MIT license.