This book is dedicated to the basics of hacking—methods of analyzing programs using a debugger and disassembler. There is huge interest in this topic, but in reality, there are very few programmers who have mastered these methods on a professional level.
The majority of publications that touch on issues of analyzing and optimizing programs, as well as creating means of protecting information, delicately tiptoe around the fact that in order to competently find "holes" in a program without having its source code, you have to disassemble them. Restoring something that even somewhat resembles the source code is still considered an extremely complex task. In the book, the author describes a technology used by hackers that gives a practically identical source code, and this includes programs in C++ as well, which are particularly difficult to disassemble.