It is important to clarify upfront: is not an official Siemens software product. Rather, it is a well-known, unofficial tool in industrial automation circles—a legacy piece of software (often associated with older versions like 1.31 and a common placeholder “33”) used for cracking or bypassing access protections on Siemens S7 Programmable Logic Controllers (PLCs).
While it works for standard S7-300/400 blocks, it cannot decrypt the newer "Block Privacy" protection introduced in Step7 v5.5. Simatic S7 Can Opener V1.31 33
It does not bypass or remove passwords set at the hardware configuration level of a CPU. It is important to clarify upfront: is not
