1. Projection and shadow setting method of objects
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.
In the system, the client often needs to interact with multiple subsystems, which causes the client to change with the change of subsystems. At this time, the appearance mode can be used to decouple the client from each subsystem. Appearance mode refers to providing a consistent facade for a group of interfaces in the subsystem. It provides a high-level interface that makes the subsystem easier to use. For example, the customer specialist of Telecom can let the customer specialist complete the services such as charging telephone charges and modifying packages without interacting with various subsystems by himself. The specific class structure diagram is as follows:
郝圆、夏初、范小天、田娜，几个朝气蓬勃的青年在同一所大学里就读，常聚在一起学习，同时又因为他们对各种美食都情有独钟，围绕着学习和他们共同的兴趣爱好，逐渐成为了好朋友。
《蓝血》很快就会重播新的剧集
生肖龙、生肖猪和生肖狗大闹蟠桃宴会，不小心将九龙夜光杯打碎，夜光杯上九条小龙化为九颗龙珠，坠落凡间。玉皇大帝派生肖龙等三人去凡间寻找龙珠，将功赎罪。于是，生肖龙等三人踏上了寻找九颗龙珠的漫漫征途。他们经历了九段冒险之旅，最终取得成功。
Between flowers and insects
林思明闭上眼睛，开始沉思，小田默默站在一旁。
"Leaves dyed blue"
It was listed as an Olympic event in 1908 and cancelled in 1920. It was not resumed until 1972.
Delusion-is a misunderstanding of reality. There can be two main types: sudden appearance of self-feeling particularly good, such as feeling extremely strong and omnipotent. The other is persecution delusion, excessive worry or overt or covert "enemies" are always trying to hurt themselves.
2018-03-05 11:42:07
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板栗一扬眉，道：不碍事，你不是有‘芙蓉面么。
3. Suffering
大家如此群情激奋，可知这个结局其实是很成功的，它让所有人都体悟到天道轮回下的压抑，和那永世的寂寞。
黄豆立马浑身十万个心眼子都张开了。
于是端了过来，又拨了些给他，然后跟他头挨着头，一边吃一边说道：这萝卜苗有些温苦，可是清热的。
在德布拉甘萨的授权中，最低的底线低得离谱，只要留下马六甲，留下一个东南亚的根据地就足够了。
