日韩欧美在线AV播放

面对少女的缠绕，张无忌僵硬的吐出四个字：不知羞耻。呵呵呵呵呵，竟然有人说‘玄铁重剑没有档次。I will never forget it. "Zhang Xiaobo said.小葱眼皮都没抬，道：我都快出嫁了，正在攒嫁妆，你还让我付账，有你这么当哥哥的么？再说，娘让葡萄姑姑监管着，想捞油水也不大容易哩。尹旭抱拳道：在下有些拙见还望吴大人指点一二，嬴政灭六国一统天下，自称始皇帝，妄图子孙永掌天下，至千世万世，吴大人以为如何呢？吴芮摇摇头：在下身为官员，不便妄议朝政，不过听听尹壮士的高见倒也未尝不可。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.