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.
I follow the execution process of this small program: first, I take exp and "\ +" as parameters, call the calculation (String, String) method in the AbstractCalculator class, call split () of the same kind in the calculation (String, String), then call the calculation (int, int) method, enter the subclass from this method, after executing return num1 + num2, return the value to the AbstractCalculator class, assign it to result, and print it out. This just verifies our thinking at the beginning.
想着等所有的事真相大白后。
一天，当年的四个同伴先后出现在澳门，五人重新聚首百感交集。但是每个人心底里都有不同的盘算和目的，其中有人更是仇家派来杀人灭口的。与此同时，另外几名杀手也肩负使命出现在澳门，于是平静的小镇掀起了连场激斗。直到最后大家面对彼此紧扣扳机的时候，才弄清楚各自此行的真实目的，并且等待着命运的裁决……
Attempt, we used onion skin or persmmon-based dyes combined with blue; In this case, the blue dye acted as a strengthener for the weaker green or pink dyes, preserving the overall color nonetheless. The combinations can of course be altered to answer any color requirements, but it is worth remembering.
4. After the end of five consecutive sweeps and three consecutive stabs, three layers of gun spirits, iron painting and silver hook, enter 8 seconds CD;;
但是在最后的第七次冒险中遇到了神秘的巨大生物，被荒废的城市世界放飞了！
她一拉张槐，上前对英王施礼，正容道：王爷，臣妾已经认定这人就是小儿，因此要将他领回去。
君上也颇有些无奈，只是说道：项羽、尹旭不过一丘之格，何况是大王之前便答应项羽的，若是此时罢手，一来大王会失信于人，二来说不定会惹来项羽的猜忌，于大王并非好事，所以……按照吩咐去做就是了。
又聊了十几分钟，林思明开口说道：陈兄，我真是佩服你。
走进屋子，看到大厅之中，地下有一根长棍，中年连忙蹲倒下去，一手握住棍子，另一只手用衣袖擦拭起来。
英台恢复女儿装 ，兰麝满身世无双 。方知英台是女郎 ，情定三生拜高堂。多情自古多离伤 ，父母之命打鸳鸯 。楼台相会绝情殇，化为蝴蝶飞成双 。今人尤伤情意长 ，梁祝化蝶千古唱…
今年暑假广为好评的《被不良少年盯上》正式续订第二季，将于2020年播出。
文小桃重重的点点头，深有同感。
一个是千年以前南扶余的最后一个公主，一个是将军世家的继任者，一个是心怀仇恨矢志复国的敌人，集结了一见钟情，互相钦慕，国仇家恨，许多恩怨于一体的复杂关系，这样的三个人所谱出的千年之爱，你能够错过吗?
Console.log (Baidu leader has come for an interview);
Chang is good. "Zhang Xiaobo said.
[New Office] First Certificate in Wuxi Area: Free; The second card starts with one household and has more than one card: 200 yuan/card/first year (including media);
Console.log ("I am the technical director responsible for the technical interview");
