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We know that in x64, the first six parameters of the function are stored in RDI, RSI, RDX, RCX, R8 and R9 registers in turn. If there are more parameters, they will be stored on the stack. Therefore, in order for the computer to run the commands we want, we need to find a way to put the address of "/bin/sh" into RDI so that the machine can execute the system function. After carefully examining the linux function stack structure, we can find that we can use RAX register to put the system () address into RAX, then look for code fragments with JMP rax to make use of, and at the same time use RDI register to pass the parameter "/bin/sh" to finally achieve the attack purpose.2016年，由于开始侵蚀世界的怪人“BugStar”=未知的电脑游戏病毒侵蚀开始。为了救助感染者，决定与BugStar战斗的天才玩家宝生永梦变身为假面骑士Ex-Aid。农村姑娘田小草家境贫寒，父亲嗜赌如命。嫁给丈夫李来顺后，虽有妯娌处处刁难，但小草处处忍让，加上婆婆护着，倒也没有大风波。小草夫妻踏实肯干，就在日子越来越好的时候，来顺因意外瘫痪在床，不久病逝，小草一人挑起照顾一大家子人的重担：她收过草药、养过林蛙、打过零工、摆过地摊、做过保姆。小草从农村到城里，每当日子刚有起色，便会有这样那样的麻烦找上门；她被人误解过，被人陷害过，但小草从未退缩、抱怨过。小草用她的善良、宽厚和踏实肯干，让人们看到了她的努力，赢得了大家的尊重和认可，最终付出得到回报不敢，父亲教训礼仪，尽显家主之威沈悯芮再次行礼，悯芮也必遵父亲之训，引以为戒。When an attacker sends an http post request, he sets the Content-Length to a large value in the request header and sends the http body to the web server at a very slow speed, byte by byte. The web server always needs to maintain the connection with the client and wait for the data transmission to end. Because the content-length is set to a large value and the http body transmission speed is very slow, attackers can occupy this connection for a long time.Cancer Security Aid Poor Girls in Sichuan