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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.妙在他不通曲谱，完全发自内心吹奏，信手拈来，真正自然之音。进入咸阳，去看看秦始皇奢华的阿房宫。/stink (Odor)尹旭挪动两步，一拍大腿恍然道：我差点忘了，有的人用兵保守，势均力敌就罢了，即便兵力优势也不轻易出兵。2008年，落魄的电竞老将肖枫勉强维持着自己的战队。此时电竞还远没有迎来它最好的时代，肖枫的战队被误解、被嘲笑，却坚持着心中的梦想。一战大败右贤王，才能夺回河朔，彻底解除匈奴对关中的威胁