You have heard about a new online chat service that had become quite popular and has very tempting features but regrettably you can't afford it. However, a friend of yours has just left the company which is developing this service, and he shared some of the source files with you that are part of the backend, and they seem suspicious Especially these two files:

personal.h #include stdint.h #include typedef struct personal t char full name [128; char address [1281; char acc_number [32]; uint32 t balance personal t; int8 t strcpy_max(char* dst, const char* src, uint8_t max); int8 t personal store(personal t data, const chars full name, const char* address, const char* acc_number, uint32_t balance); personal.c int8 t strcpy_max(char* dst, const char* src, uint8_t max) uint8_t len strlen ( src); if(!en len > max) return -1 strcpy(dst,src); return int8 t personal store(personal t* data, const chars full name, const char* address, const char* acc_number, uint32 t balance) ( data-balance balance; if(strcpy-max (data-xfuu-name, full-name, 127)) return 1; if (strcpy max(data->address,address, 127)) return 2; ?f (strcpy-max (data->acc-number,acc-number,31)) return 3; return 0 If you are able to find a vulnerability, you can make more than enough money from nothing to pay for their services eternally At first it might sound difficult, but it's not impossible, there was a woman who almost won 43 million dollars on a slot machine because of an integer overflow bug, but she was only offered a steak dinner and 2 dollars. Even though she did it accidentally, maybe you can utilise this type of bug to change your balance in your account