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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.那军汉急忙上前扭住她，香荽疯了一样挣扎，挣脱不开，小女娃忽然一低头，一口咬在那人手腕上。一切以大局为重……随即有消息传出，汉国使者到访洪都。1. Right-click "My Computer" > > "Properties" on the desktop and click "Advanced System Settings" on the pop-up page.(5) When the towing length exceeds 200m, a diamond shape is displayed at the most obvious place.Basically, made up