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我们准备准备，等会儿就能吃饭了。城门守将见状，匆匆赶来，斥责道：程六，你也太不小心了。RN1, …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.于是，两人都丢下书本，去到雪地里练武。大学三年级学生阮惠与男友罗刚在海洋馆有个浪漫的约会。年轻、英俊的海洋馆驯兽员杜伟（陆毅饰）成了这次约会的见证人，他将监督罗刚每天从高台上跳下直到完成365跳。在这次约会就要完成的前一天，罗刚在一次意外中为了救护海豚而丧生。满怀希望的阮惠如约而至，可从高台上跳下的竟是杜伟的女友石雨（梅婷饰），大家为了不让阮惠伤心而隐瞒真相，关心她，照顾她。这其中最为热心的就是石雨。得知真相后，阮惠把无尽的思念寄托在海豚身上，并与一只同样失去爱人的海豚成了朋友。石雨有着优越的家庭条件，然而为了爱情她不顾一切来到海洋馆，但她的热情主动却使杜伟深感压力，特别是杜伟为了照顾生病的海狮常常耽误和石雨的约会，渐渐的，杜伟对阮惠的同情发生错位，与如胶似漆的女友的关系也出现裂痕，而此时的阮惠也在不知不觉中爱上了杜伟。石雨的咄咄逼人与阮惠的温柔善良形成鲜明的对比，使杜伟左右为难。一段亲情、友情、爱情以及人与动物之间那份特殊的感情在这个夏天，在美丽的海洋馆开始了……