Black box fuzzy test method and system for industrial control private protocol

• Main Authors: MA RONGKUAN, XIE YAOBIN, WANG HONGMIN, WEI QIANG, WU QIANQIONG, YANG YAHUI
• Format: Patent
• Language: Chinese; English
• Published: 05.04.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention belongs to the field of industrial control system protocol testing, and particularly relates to a black box fuzz testing method and system for an industrial control private protocol, protocol data packets are collected from an industrial control environment and an open source community, and the protocol data packets are subjected to reverse analysis to identify field semantics and obtain a protocol format; according to the field semantics, constructing a protocol state machine used for guiding fuzzy test execution; a test case is generated according to the protocol format, the protocol state machine is used for guiding and selecting a state transition path to send the test case to the tested equipment, and an active detection method is used for monitoring whether the tested equipment is abnormal or not. According to the method, the protocol state machine is constructed according to the function code field through protocol reverse analysis to guide the fuzzy test execution process, more protocol