Parsing a binary file to change multiple values

Task briefly: Find multiple parameters in a binary file and replace their values with new ones. Binary file encoded using the Resource Interchange File Format in a Big-Endian byte-ordering. The structure of the file and data is known, at least for searching and parsing the necessary blocks. What will be provided: Binary file (test file), xml representation of a binary file (to understand the structure), language definitions and structure of a binary file, an indicative guide on the structure of blocks for search (parsing) and the names of the desired parameters, additional supporting details and explanations. Input parameters for a function in a console c++ application: File path, string with value to search, parameter values to replace Research Procedure (a specific scheme will be provided in private details): Find block type A (there can be many blocks of this type A in a file). In this block A by structure, find block B and get a string in it. Compare this string with the required search string. If the string matches, then in the same block A we shift to block C and in it we get the two parameters we need. Rather, we need to get their position in order to subsequently replace the data for this position with new ones. After the positions of both parameters are found, it is necessary to replace the values in them with new ones in the binary file, overwriting the original file. What should you provide at the output: C++ console application, source files