How do 'robot hackers' actually work?
The ones used in the competition will probably be a mixture of simple brute forcing and the more advanced software will probably search the network/website/interface code for any known vulnerabilities.
I do not know if the teams will manage to create software that can innovate de novo methods of infiltration.
In short, they will be automating what hackers have done for years, it will effectively be an automated collection of script kiddie tools.
Robot hackers or bots just automates process that humans perform. For an instance, i was working on Metasploit (that is a tool using which u can hack into operating systems in case u are Patrick :-p), the process that i was using was having steps such as finding open ports and exploiting them to get shell to access the system. Now i can easily automate these steps and make a bot or "Robot Hacker". Hope this helps. :)