Low Orbit Ion Cannon (LOIC) is an open source network stress tool, written in C#. LOIC is based on Praetox's LOIC project at https://sourceforge.net/projects/loic/ .
LOIC is for educational purposes only, intended to help server owners develop a "hacker defense" attitude. This tool comes without any warranty.
You may not use this software for illegal or unethical purposes. This includes activities which give rise to criminal or civil liability.
Under no event shall the licensor be responsible for any activities, or misdeeds, by the licensee.
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 or Wine. Read the wiki at https://github.com/NewEraCracker/LOIC/wiki/_pages for updated instructions.
HIVEMIND mode will connect your client to an IRC server so it can be controlled remotely. Think of this as a voluntary botnet. Please be aware that your client can potentially be made to do naughty things.
Note: It does NOT allow remote administration of your machine; it just providees control of LOIC itself.
If you want to start up in Hivemind mode, run something such as this:
LOIC.exe /hivemind irc.server.address
which 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
which will connect to irc://irc.server.adress:1234/secret
In order to run Hivemind Hidden mode, run something such as this:
LOIC.exe /hidden /hivemind irc.server.address
which 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 such as the following:
!lazor targetip=127.0.0.1 message=test_test port=80 method=tcp wait=false random=true
To start an attack, type:
or 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 their defaults:
To stop an attack:
and be sure to remove "start" from the END of the topic, if it exists, as well.
Take a look at the source code for more details.