ืื™ืš ืžืชื—ื™ืœื™ื ืขื reverse engineering ืœืžืชื—ื™ืœื™ื | ืกื™ื™ื‘ืจ ื•-CTF - ืคื•ืจื•ื 8200 ืืงื“ืžื™