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.It was built under the leadership of Chief Cai Xiang and completed in six years. It is a famous beam-type stone bridge in ancient China. Because the bridge is built at the junction of the river and the sea, the river is wide and the water is deep, and the project is arduous, the bridge builder pioneered the "raft foundation" to build piers and planted oysters to fix the bridge foundation, which is an important scientific innovation in ancient China. This bridge, together with Lugou Bridge, Zhao Zhouqiao and Guangji Bridge, is called "China's Four Ancient Bridges". At present, the bridge is 834 meters long and 7 meters wide. There are still 46 boat-shaped piers. There are many inscriptions in the vicinity of the pavilion in the middle of the bridge. There are Song Dynasty cliff carvings such as "An Lan of All Ages" and stone pagodas and samurai statues. There are Zhaohui Temple, Zhenshen Temple and other sites in the north of the bridge, Cai Xiang Temple in the south of the bridge, and Song Monument in Cai Xiang's Wan'an Bridge. In 1988, it was listed as a national key cultural relic protection unit and is one of Quanzhou's scenic spots to declare world cultural heritage.晨晓(曲泉丞饰）大学毕业，在父亲的安排之下，到石屏县大山村小学支教，准备一年后回大学免试读研究生。姚春秀（王祎饰）为了实现自己的理想，成为大山村的大学生村官，最终实现做公务员的理想。水泉（杨紫茳饰）是大山村第二代农民工，想通过打工学手艺立足，最终实现成为城里人的愿望。 晨晓到了大山村小学后，发挥自己的专长，成长为一名优秀的山村教师，雨季来临，晨晓为了保护学生，献出了自己年轻的生命。姚春秀当上村官之后，逐渐对大山村产生了深厚的感情，当晨晓不幸罹难后，她放弃了做公务员的机会，决心坚守在大山村，永远“陪伴”着晨晓。2. Learn knowledge, seek development, and persist in shaping people with a prosperous culture. The overall quality of young people in rural areas is not very high, so it is urgent to improve their ideological, moral, scientific, technological and cultural qualities as soon as possible. The government and society should educate the majority of young people in loving their motherland and hometown in relevant aspects, and help them learn the Party's policy of enriching the people and the ideological morality and code of conduct suitable for the development of the socialist market economy. We will continue to carry out the education of "thinking of the source of wealth and thinking of progress when we are rich." In order to cooperate with the modernization and the development of information technology, efforts should be made to establish a standardized and sound training network and a training base through multiple channels and levels. According to the actual situation, efforts should be made to catch up with the development of the city.当然是回阳城老家了。凭着一双胶鞋、一袋干粮、一双手和吃饱饭、穿暖衣的理想，项达民在二十多年前开始了他艰苦卓绝的乡镇企业创业史。二十多年过去了，项达民领导的塔镇，成为全国第一个跨进小康生活的乡镇。然而，这时候的塔镇乡镇企业和全国的乡镇企业一样出现了前所未有的危机： 集资修建的别墅卖不出去；集资群众怨声载道，最后发展到集体请愿；工地民工的工资无钱可付，矛盾一触即发；二十多年历史的塔镇第一个企业王桃厂用“麻”贿赂拉拢采购员……月下感觉挺遗憾的，月下认为那里面还是有不少爽点，可以挖掘的。
