欧美人成在线观看vr网站

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."There are all kinds of garbage bags in the house."在20世纪90年代的土耳其，一群十几岁的弃儿组成了乐队，让他们深爱的老师坠入爱河，这样她就有理由和他们呆在一起了。A brilliant scientist is plucked out of the company lab and sent to India to sell the genetically modified rice she created - which she doesn't realize will destroy the farmers she thinks she's helping.葫芦道：严师傅背着板栗吧，我自己能走。　　韩梅梅也是不知不觉地喜欢上了李雷，却迟迟不敢开口，于是古灵精怪的她制定出各种作战计划，意图攻陷李雷。