Simatic S7 Can Opener V1.31 33 _hot_
Simatic S7 Can Opener (specifically version 1.31) is a third-party software utility used to unlock and remove "KNOW_HOW_PROTECT" password protection from SIMATIC S7-300 and S7-400 logic blocks Key Features of S7 Can Opener V1.31 Block Unlocking
This tool should only be used by the legal owners of the software for maintenance and recovery purposes.
Plant owners should test their own systems with tools like Can Opener (under controlled conditions) to identify exposure before attackers do. A “can opener” in friendly hands reveals brittle security. Simatic S7 Can Opener V1.31 33
On the other hand, "Can Opener" seems to refer to a device used to open metal cans.
It does not bypass or remove passwords set at the hardware configuration level of a CPU. Simatic S7 Can Opener (specifically version 1
: In manufacturing environments, the Simatic S7 Can Opener V1.31 33 facilitates the integration of various automated systems, such as robotic arms, conveyor belts, and inspection systems, allowing for more streamlined and efficient production processes.
It cannot unlock system functions (SFCs) or system function blocks (SFBs), as these are stored in the PLC's internal system memory. On the other hand, "Can Opener" seems to
It allows users to quickly enable or disable protection without needing to recompile the entire block in the Siemens STEP 7 editor. Use Cases and Limitations
Nice write up – where can I get the vulnerable app? I checked IOLO’s website and the exploitdb but I can’t find 5.0.0.136
For “System Shield AntiVirus and AntiSpyware” you’ll need to run the downloader which downloads the main installation package but then you’ll need to also request a license. Best just to download “System Mechanic Pro” and install as a trial, this downloads the entire package and no license is required for installation
http://download.iolo.net/sm/15/pro/en/iolo/trial/SystemMechanicPro_15.5.0.61.exe
Hello.
Thanks for this demonstration!
I have a question. With this exploit, can we access to the winlogon.exe and open a handle for read and write memory?
Kind regards,
Yes you can as “SeDebugPrivilege” is also enabled
Why doesn’t it work with csrss.exe?
pHandle = OpenProcess(PROCESS_VM_READ, 0, 428); //my csrss PID
printf(“> pHandle: %d || %s\n”, pHandle, pHandle);
i got: 0 || (null)
It should work, most likely haven’t got the necessary privilege
Oh yes, thanks. But can you help me with “SeDebugPrivilege”. What offset?
Kind regards,
The SeDebugPrivilege is already enabled in this exploit, what you can do it use a previous exploit of mine which uses shellcode being injected in the winlogon process.
Thanks for nice write up. I want to study this case, so I’ve downloaded the link
http://download.iolo.net/sm/15/pro/en/iolo/trial/SystemMechanicPro_15.5.0.61.exe.
And opened amp.sys file with IDA pro, but I could not find the code related to ctl code 0x00226003. How can I find it?
Best just do a text search for 226003 and only one entry will be listed
Thanks! I found with its hex byte ’03 60 22′ in IDA search and reached vulnerable function.