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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.新年已至，欢乐颂22楼每个人的新问题也接踵而来：安迪（刘涛饰）因包奕凡（杨烁饰）迎来情感的新可能，却也面临来自身世及包家内部带来的新困扰；樊胜美（蒋欣饰）尝试起步新生活，却仍难脱离家庭泥淖，对王柏川（张陆饰）处处依赖事事紧逼；曲筱绡（王子文饰）与赵医生（王凯饰）差距仍存 ，分和不断，曲家看似稳定的家庭关系实则危机四伏；邱莹莹（杨紫饰）对应勤（吴昊宸饰）一片痴情，情感经历却令应勤无法接受；关雎尔（乔欣饰）邂逅摇滚青年谢童（邓伦饰）坠入爱河，却遭到父母的激烈反对。就算是没有关注过的网友，也大多零零散散地知道些。曾经的恩爱夫妻如今竟阴阳相隔，留下的是丈夫随身携带的一把保险柜钥匙和一个令人费解的写着数字的信封，是自杀？还是有阴谋的他杀？曾经一夜成名的著名舞蹈演员竟被公安在扫黄打非的行动中抓获，不为人知的还有她过去三年不堪回首的经历，是迫不得已？还是另有内情？曾经被男人传染艾滋病的无辜的女子，竟正实施着以同样方式报复所有男人的报复计划，吸毒、贩毒；引发艾滋病蔓延的丑行毁灭着人的心灵和身体，刚刚康复走出戒毒所的漂亮女孩又复吸险些送命。20节被称为到泰国曼谷营救克洛伊福斯特,英国大使的女儿和longtim菲利普·洛克(绿色)的朋友,罗宾·福斯特(Tim McInnerny)。研究小组发现她被关押的化合物,但在克洛伊的raid绑匪逃脱。在认识到铅绑匪雷麦奎因(Max Beesley),迈克尔·Stonebridge(温彻斯特),达米安•斯科特(Stapleton)和茱莉亚里士满(路)跟踪他去夜总会和植物一个追踪者。然而,麦昆很快意识到他正在跟踪和克洛伊再次试图逃脱,同时联系培养提供武装炸弹使馆negoatiating的朝鲜人。不到15分钟,斯科特和Stonebridge必须找到麦昆和应对当地的帮派。他们最终救援克洛伊和逮捕麦昆,但洛克未能阻止福斯特在炸弹爆炸之前,杀死福斯特和朝鲜II. Applicable Scenarios2095年10月31日。