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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.不过此事之前都已经有传言，所以不足为奇。从来没人知道，性格古怪的巴斯特博士的实验室里面，到底在进行什么研究。然而在一次的实验室意外中，一只平凡的米格鲁狗突然发现，他不但能开口说话，更获得难以想象的超能力。穿上酷炫斗篷的超狗誓言将保护卡比多市民的安危，特别是他心仪的对象——一只名叫波利的纯种猎犬。当巴斯特博士与他的助手暗中策划想要摧毁卡比多市，只有超狗能够拯救世界！Germany: 760,000　　李小姐未来的夫君是当朝宠臣、镇守边关的袁不屈大将军。财主小姐嫁给巨商公子，武师闺女嫁给威风将军，在当时显然是门当户对，珠联璧合。殊不知杜小姐要嫁的齐三公子是等着她去冲喜的病秧子，而李小姐要嫁的袁大将军当年曾在她家受过屈辱。描述了解放前粮荒时期的百态人生。贪官当道，奸商囤积居奇，百姓无粮可吃，怨声载道。李颖扮演的凤娇出身风尘，被穷铁匠从妓院赎出从良，但跟着铁匠吃不好穿不暖，最擅长的就是偷吃。在该剧中，李颖扮演的凤娇极为贪吃，几乎每次出场都背着铁匠兄弟在偷吃东西。从偷吃鸡蛋到偷吃小米饭、咸鱼、烧鸡，每次都狼狈不堪，而演惯了高贵女性的李颖也放下身段，每次都演绎的惟妙惟肖，实在是令人钦佩。　　“魔高一尺，道高一丈”，与此同时，警方已密切注意这股强劲的黑势力，并进行追踪调查，乔云风万万没有想到自己最信任，最亲密的女人却是自己身败名裂的底牌……