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A pried-open guardrail中国奇书《推背图》是唐初李淳风与袁天罡合撰，预言历代变革之事，准确灵验。唐太宗翻看此书后，大为赞赏，重赏李淳风，袁天罡因妒忌李淳风夺其功，怀恨在心。太宗死后，两人更将《推背图》图、文分家，两家成为世仇。而《推背图》从此绝迹民间。数百年后，两家后人阴差阳错结成夫妇……　　沉眠着现在的人类无法制造的贵重遗物。　　以色列退伍士兵约亚夫（汤姆·梅西耶 饰），一心向往自由开放的法国，却在来到巴黎后惨遭洗劫。眼看即将沦落街头，约亚夫遇到一对生活富裕的情侣—作家艾米勒和女友卡洛琳，因而幸运获救。28Figure 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.