Reverse Engineering: Analyzing Java_com_iscc_crackme3_Mm_getKey Function

The function "Java_com_iscc_crackme3_Mm_getKey" is a wrapper function for a native method in a Java class named "com.iscc.crackme3.Mm". \n\nThe function takes an integer argument "a1",  which is likely a reference to an instance of the "Mm" class. \n\nThe function first copies the contents of the global variable "unk_6595" into a local char array "dest" using the "memcpy" function. The size of "dest" is 16 bytes. \n\nNext, the function calls a sub-function "sub_2EF4" with the arguments "dest" and 16. The purpose of this sub-function is unclear from the provided code snippet. \n\nFinally, the function calls a function pointer stored at offset 668 in the "a1" object. The function pointer is casted to a function pointer with the signature "int (__fastcall *)(int, int)", which means it takes two integer arguments and returns an integer. The function pointer is then called with the arguments "a1" and the result of the previous "sub_2EF4" function call ("v2"). The return value of this function call is returned from the "Java_com_iscc_crackme3_Mm_getKey" function.