Interrupted memory writes can render the PLC completely non-functional.
However, the most authoritative "solid paper" and technical deep-dive on this specific topic is: Key Technical Resource "Breaking Siemens SIMATIC S7 PLC Protection Mechanism" by Gao Jian (GEWU Lab). : This was presented at the Hack In The Box (HITB) Security Conference s7 200 smart plc password unlock work
Which of those would you like?
Remember: Great power comes with great responsibility. Unlock your hardware, recover your program, but respect the intellectual property of machine builders. Now go get that line running again. Interrupted memory writes can render the PLC completely
Before attempting to unlock the PLC, it is essential to understand the level of protection implemented. The S7-200 SMART series generally features three primary security modes: recover your program
