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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.　　诸多小动物的性命危在旦夕之际，走来一只大象，狮子一看有不识趣的家伙闯进自己的地盘，顿时火冒三丈，责令猴子、野鸡和小鹿分别与大象比赛摘果子、拣石子和走沼泽地，令它没想到的是，大象的本领竟是那样大。不甘心输的狮子决定亲自上阵。郑氏不敢再吱声，怂恿张槐和哥哥青木坚决反对此事。"Charming Card" starts with the specific needs of tourists, With the preferential treatment of hotels, scenic spots and other consumption scenes to leverage the huge value of the industrial chain of eating, living, traveling, traveling, purchasing and entertaining, So as to realize win-win results for cities, scenic spots, tourists, platforms and other parties, promote the transformation of ticket economy to industrial economy, and the transformation of closed tourism from self-circulation to open "tourism plus", better meet the needs of tourism consumption, and have a far-reaching impact in the process of developing quality tourism and making people feel more comfortable.悬疑古装言情剧《两世欢》根据“寂月皎皎”的同名小说改编，讲述了因仇恨不能相守的一对青梅竹马，各换一重身份，携手连破大案，共保一方太平的故事。Episode 23　　他是去赴另一妓女张惠贞之约。此事极大地惹恼了妓女沈小红。小红在荟芳里挂头牌，但因为她生性刚烈，快人快语，少有清客敢摘她的牌。莲生是唯一与她长期往来的人。次日清晨小红找上门来，在众目睽睽之下对惠贞大打出手。其实莲生所为事出有因。他觉察到小红同时还跟一个年轻戏子柳儿相好，并从小红的态度上感觉到些许冷淡。烦闷之下莲生去找另一个妓女，结果打翻了小红这个醋坛子。