xavius

[LOB] Level20: xavius → death_knight [完]

death_knight /* The Lord of the BOF : The Fellowship of the BOF - dark knight - remote BOF */ #include #include #include #include #include #include #include #include #include main() { char buffer[40]; int server_fd, client_fd; struct sockaddr_in server_addr; struct sockaddr_in client_addr; int sin_size; if((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1){ perror("socket"); exit(1); } server_..

[LOB] Level19: nightmare → xavius

xavius /* The Lord of the BOF : The Fellowship of the BOF - xavius - arg */ #include #include #include main() { char buffer[40]; char *ret_addr; // overflow! fgets(buffer, 256, stdin); printf("%s\n", buffer); if(*(buffer+47) == '\xbf') { printf("stack retbayed you!\n"); exit(0); } if(*(buffer+47) == '\x08') { printf("binary image retbayed you, too!!\n"); exit(0); } // check if the ret_addr is li..