Study On Anti-external Plugin For Online Game Based On Key Press Simulation

In recent years,the rapid development of online games,creating a huge market value,attracts a growing number of people to engage in illegal online games external plugin software.Therefore,the online gaming industry is facing more serious hazards and challenges.With the development of game external plugin technology,network game plugin software become more automated and intelligent.Some professional game Studios emerge by using some automatic game plugin software.These studios only need large number of computers,which brings threaten to the survival and development of online games.The anti-plugin technology based on key simulation has been investigated to counter all kinds of plug-in softwares which manipulate games.Automatic or semi-automatic game plugins aim to help players automatically play game without manual keystrokes.For this characteristic,this study puts forward a new test plug-in idea: implement key sniffing and sniffing into the key information to the game program,compare key press on the keyboard based on game situations,you can identify whether there are external behaviors.If the game is using the keyboard,and the game did not detect any physical key pressing,or gaming keyboard pressing does not match,you can accurately determine there is a plugin.In order to ensure the reliability of keyboard sniffing,this paper focuses on the analysis related to keyboard input based on Windows kernel theory and keyboard key technologies such as chips,which trying to realize keyboard sniffing at the physical layer of the system.The contents include: Windows Messaging,external keypad simulation of various technologies,Windows I/O system principle,structure of the device driver related to keyboard input and APIC chip(8259a),keyboard controller(8042)and keyboard that comes with chips(8048).By modifying IOAPIC chip keyboard service disruption and disruption to the service description table(IDT)added in ISR,perfect realization of a service disruption on the keyboard HOOK to hook,but does not affect the normal use of the keyboard.An ingenious anti-external plugin software is designed and implemented,Results also show that the proposed anti-external plugin software is feasible and has some practical value.