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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.由Ken和Toey主演,成熟帅气的咖啡园主和可爱迷糊的百变侦探的恋情~In the communication with the team members, Mr. Sun Yimin knew that most of the team members had entered the laboratory to help their instructors improve the subject. After understanding the research topic, he encouraged the team members to think differently and not to stick to books and documents.曾经有人做过统计，现代社会每天就有78传说消失，有说因现代父母越来越忙，没时间跟小朋友说故事，亦有说因现代人已不再相信传说，更加不相信传说中的英雄曾经存在过。但不理世人相不相信，无论传说消失的速度有多快，有关马小玲、况天佑等人的传说，依然会永远流传下去，因为他们不单止真真实实的存在过，还曾在这世界留下欢笑，留下眼泪，更留下了一段段令人难以忘记的动人故事……我恨。HBO已续订《硅谷》第四季。