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李左车满腔期待，心中的感情十分复杂。如果自己带来的是一个坏消息，只怕是他根本支持不下去。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.Richard是位酷爱冒险的美国年轻人，一天，他来到泰国度假，遇到法国女孩Franoise和其男友，三人成了朋友，不久Richard爱上Franoise。Richard偶然从旅馆获得一张神秘地图，遂跟Franoise和其男友共奋同找寻传说中的人间乐土。原来在那里已有一批先觉者组成社区，生活其中，他们为了享受原始的逍遥生活而跟在岛上种植大麻的当地农民订下协议，不能对外透露岛踪迹。夏宇豪（范少勋 饰）是一个非常调皮和活泼的高中男生，一场意外之后，他连同死党王振文（杨孟霖 饰）和其义兄王振武（施柏宇 饰）一起转学来到了一所新的高中里。某日，夏宇豪逃课翻墙的英姿被排球队长贺承恩（谢毅宏 饰）和球队经理邱子轩（卢彦泽 饰）给撞了个正着，何承恩从夏宇豪敏捷的身手中看到了无限的潜力，于是热情的邀请他加入排球队。124. X.X.250