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Figure 1 is an example of a JOP attack. In this example, the attacker's aim is to execute a system call "int 0x80" to open a new command line window. To do this, an attacker needs to modify the contents of the eax register to "0x0000000b" and the ebx register to the string "/bin/sh" before "int 0x80" is called, and the ecx and edx registers must point to the value "0x00000000". Suppose the value "0x0000000" and the string "/bin/sh" can be found in memory when the program is running. An attacker needs to construct the value "0x0000000b" himself. However, for the value "0x0000000b", when an attacker saves data to the stack through a buffer overflow, the "0x00" byte will trigger the system to terminate the read operation. This example specifically describes how the attacker uses the existing code snippet in the program to modify the value of val pushed into the stack by the attacker step by step from "0xffffff0b" to the value required by the system call "0x0000000b", thus implementing JOP attack. The following are the detailed steps of the process.First of all, find a good mentor//185HBO宣布续订商战剧《继承人》第2季，该剧6月3日刚开播，口碑不错。由亚当·麦凯(《大空头》)打造，讲述罗伊家族的故事，该家族掌控着世界上最大的媒体和娱乐企业之一，长子Kendall希望能在父亲退休后接管公司，然而这个幻想被父亲亲手破灭，为家族权力斗争奠定了基础。担当不起呀。For event handler registration, see the section How to Register Event Handlers.故事发生在清朝末年的江南古镇——南溪。钮世诠（王冰 饰）是南溪的首富，一心想创办中国首家机器丝厂，女儿钮方丽（杨恭如 饰）海外学成归来，在上海火车站目睹了宋教仁被谋杀，混乱中她与齐彻（黄觉 饰）邂逅并相恋。不料俩人的恋情遭胡家强烈反对，因胡家长女胡碧容嫁到钮家后，从十六岁守寡，如今已整整三十年，而当齐彻明白自己爱上的竟是仇家的女儿后，更是心绪难平。此时齐彻的弟弟肖晃（廖凡 饰）又爱上了方丽的妹妹曼蝉（李小璐 饰），但因错走一步路，陷入万劫不复深渊。钮世诠欲置齐彻兄弟于死地，不成想自已则被对他恨之入骨的胡碧容杀死。之后，肖晃与曼蝉绝迹江湖，碧容因与家奴偷情东窗事发自焚，两代家仇从此灰飞烟灭......——转头看了她一眼，问黎章道：你不会杀了她吧？黎章摇头道：不会。