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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.娘也好心疼我的……敬文娘听了。　　几经转折，两人同遭毒针刺晕，醒后，竟发觉自己身处加拿大海关部，更以搜获毒品在身罪名当场被捕。1《画仙纪之双月劫》由华夏国视文化传媒、星满影业、CIBN互联网电视、天津蓝航科技、衢州醉根艺品有限公司联合出品。影片讲述漫画作者数次梦境，进入漫画中的世界的二次元奇幻剧。剧中的现代戏充满都市时尚感，而漫画中的世界拥有宏大的世界观，全新的社会规则，营造出神秘玄妙、光怪陆离的全新视觉。《四川好人》的名字借鉴于德国著名剧作家布莱希特的同名剧作。这里的所谓“好人”并非传统意义上的“好人”，而凡是当代生活中的“好人、好事”；“奇人、奇事”、“新人、新事”均可纳入本剧视野。《四川好人》的故事发生在成都的一个特殊社区，由于历史遗留原因，这里一边是时尚高档的商品住宅小区，一边是过去老国营工厂的宿舍楼区，而负责管理商品楼的好人物业公司和老社区的职工活动中心更是共处一室。如此奇特的格局，给以经理卜安逸、职员柯不平、惠惠、乐乐为一方的好人物业公司，与职工活动中心主任方脑壳、棋牌室员工胖妹、大师的另一方的常规战争在所难免，再加上开餐馆的朱头肉、闷墩儿师徒和形形色色的业主们穿插其中，于是乎，一幕幕真人版的“猫”和“老鼠”的故事便陆续精彩上演