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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.你这样的，我们还是不要吃了，回头说着话，打个嗝儿熏了你不好。For example, if you and your boss go to a restaurant to eat abalone, just tell the hotel directly that you want abalone. The hotel is responsible for purchasing and making abalone. In this way, we don't have to make abalone ourselves, thus separating customers from services.历史频道的外星人UFO题材悬疑剧集《蓝皮书计划》续订第2季，仍为10集。6 p: M # E "w 'l' d3] * L揭秘泰国基友名媛们的日常！突袭朋友公寓，发现两个韩国帅哥在床，他们到底在干嘛呢？——我从不因被曲解改变初衷，不因冷落而怀疑信念，亦不因年迈而放慢脚步