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1Figure 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.Proxy: Proxy is also a group of hosts that attackers invade and control. They run attacker programs on them and accept and run commands from the master. The proxy host is the executor of the attack and really sends the attack to the victim host.胜利集团老总乔胜利的儿子乔晓东过生日，同一天生日的维修工刘成无意中带走了一份重礼，因此锒铛入狱。出狱后的刘成适逢农村家中变故，父亲重病不起。刘成因此对乔胜利充满了仇恨，开始酝酿报复乔胜利、夺取乔家财富。刘成冒充外交官的儿子混入上流社会，他偶然认识了王若萱并爱上了她。一次游玩中刘成救了乔晓东，他得以进入胜利集团工作。乔晓东和王若萱十分投缘，两人很快相爱，暗恋着王若萱的刘成心中充满了嫉恨。刘成暗中调查乔胜利的污点，并将证据透露给乔胜利想以此敲诈，不料乔胜利对此不屑一顾，却把刘成提拔到总部工作。刘成招待客户时在歌舞厅碰到了妹妹险些暴露身份，刘成为掩盖身份竟以暴力威胁妹妹回老家。王若萱的父亲王大洪为加入胜利集团，拉拢刘成为他们工作，心机狡诈的刘成反将王大洪当成了自己打击胜利集团的棋子。他利用王大洪同乔胜利的情敌关系打击乔胜利，并为王若萱和乔晓东的感情设置障碍。乔胜利忽然发现乔晓东不是自己的亲生儿子，原来乔晓东是当初抱错的农民的儿子，自己的儿子在那里？乔胜利陷入了苦苦寻找之中。乔晓东瞬间一贫如洗，步入中年，卓也（中山俊介饰）对家里的黄脸婆妻子不可自抑地产生了厌倦感，有一天，他在药店里发现了“倦怠期特效药”，妻子服食后，居然变成了大美人（井上和香饰）！Unicom杨长帆长长一叹。