Reborn Ace Hack

The analysis results of the hard disk's master boot record showed that the hard disk's master boot record had been tampered with by the virus. Xiao Yuan carefully analyzed the master boot record analysis report, coupled with his own experience and speculation, and basically understood the working principle of this virus.

:

There is a judgment program built into the master boot record. This judgment program will first detect whether the computer's network port is open. If it is open, it will broadcast itself to the network in the form of a broadcast. If it is not open, then it will not

Actively spread the virus on the Internet and move to the next process to detect the hard drive to determine whether it is infected by the CIH virus. If it is infected, it will hide itself and take no action.

If the judgment program finds that the system is not infected, it will copy the original CIH virus stored in a small hidden partition at the end of the hard disk to the system folder, and set it to automatically start with the system.

After that, it will hide itself again. When the system starts, the cih virus will run and infect the system files. The next work of destroying the system will be left to the cih virus.

This judgment is completely based on the fact that there is a complete Windows system in the hard disk. If it finds that there is no operating system in the system, which means that the hard disk may be formatted, then this judgment program will run a section and CIH virus storage

There is another program in the same hidden area. This program Xiao Yuan deduced based on the previous situation that it should be the game program.

Logically speaking, the working principle of this judgment program is not particularly complicated, so Xiao Yuan easily made the above inferences.

After exiting the hard disk analysis program, Xiao Yuan ran a disk partition management software. This software is more powerful than the fdisk that comes with the system. It can detect hidden partitions that fdisk cannot find. After running, the software gives

A list of disk system partition tables, and sure enough, there is a hidden partition of only one megabyte at the end, where the original CIH virus and the alphabet game program they played earlier are hidden.

At this time, Xiao Yuan suddenly thought that Tang Xinyu had used the system's built-in partition command fdisk to partition the disk just now. Then, after he partitioned those hard disks, this small hidden partition should not have been destroyed.

Because this partition is hidden, secondly, the viruses stored in this partition need to extract the master boot record program to run. On those student computers, even if this partition is still left, the viruses inside have become dead.

There is no chance of an attack anymore.

In order to verify his idea, Xiao Yuan took a student hard drive that had not been installed on the computer and tested it. Sure enough, after Tang Xinyu repartitioned, he only destroyed the judgment program in the master boot record. At the end of the disk

The hidden partition was still there, so Xiao Yuan deleted it and the virus inside was completely destroyed.

Tang Xinyu continued to do his work, but he was also paying close attention to Xiao Yuan. He saw Xiao Yuan pick up a hard disk he had assigned to the area, install it on the computer, and perform some operations, so

While the ghost clone was waiting, I came over.

"The virus hasn't been killed yet?"

"Well, there is still a little bit left..."

Xiao Yuan told Tang Xinyu the analysis results just now, and then asked Tang Xinyu to delete the last hidden partition of all hard disks when he was free for hard disk cloning, while he himself deleted the original CIH virus in the hidden partition.

Because he did all this under dos, and the CIH virus cannot infect dos, he was not worried about the danger of this move.

After copying it out, he disassembled the virus, and then began to study the assembly code of the virus to see how it bypassed the CIH virus immunity patch he had set. After studying for a while, he suddenly sighed with a smile:

"So that's what happened, how barbaric!"

Before the original CIH virus infects the computer, it will detect whether the machine has been infected. If it has been infected, the virus will not be re-infected. The immunity patch set by Xiao Yuan takes advantage of this and forges a virus in the system.

An illusion of being infected by a virus, thereby achieving the purpose of deceiving the virus. However, this modified virus uses a very barbaric but effective method. No matter whether the computer is infected or not, it will be re-infected.

In this way, the patch set by Xiao Yuan will naturally have no effect.

Xiao Yuan continued to analyze the virus code and found that the attack time of the virus was set to 10:30 every Thursday morning, instead of the original April 26th, June 26th and the 26th of each month. This led to the computer room this morning.

An outbreak of machine viruses.

Apart from the above changes, there was no difference between this virus and the original CIH virus, so Xiao Yuan deleted it after figuring out how it worked.

At this time, Tang Xinyu had installed the systems on all student computers, and he had also deleted the last Yizang partition. After he was free, he also gathered around, pulled up a chair and sat next to Xiao Yuan to watch.

He is constantly busy.

When Xiao Yuan saw Tang Xinyu coming, he introduced the conclusions obtained from his analysis to Tang Xinyu, but he did not want to arouse the dissatisfaction of Tang Sa, who was sitting on the other side.

"Gee, brother, you are so partial. My sister has been sitting next to you for so long, but you haven't even explained it to her."

"You are doing this yourself, and you still need me to explain it to you?"

Xiao Yuan didn't look at her and retorted directly. Tang Sa had been sitting next to him so quietly just now that when he was concentrating on analyzing the virus code, he forgot about her existence for a while. This situation made him think now

I felt a little surprised when I woke up, but because I was worried that she would use the topic to harass me, I still didn't dare to give her a good tone.

"Sister is the boss, does it matter whether you understand or not?" Tang Sa said dissatisfiedly.

Xiao Yuan ignored her and continued to talk to Tang Xinyu.

Tang Xinyu looked at his elder sister's unhappy look, and a wry smile appeared on his face. After all, she was already in her twenties this year. Why did she always seduce Xiao Yuan from time to time here in Xiao Yuan's place, and now she seemed like

A little girl who had been left out in the cold, he really didn’t know what she wanted. He had seen the cold and capable look of the elder sister when she faced the employees in the company. The elder sister at that time and the elder sister now were completely different.

personal.

However, Xiao Yuan was lukewarm towards his elder sister, and even completely ignored her beauty and temptation. This also made him feel weird. He secretly muttered in his heart, could it be that Xiao Yuan was not interested in women? Otherwise, his elder sister was so sexy and beautiful,

He also made some deliberate seductive behaviors from time to time. Why didn't this guy react at all?

Xiao Yuan didn't care whether Tang Xinyu understood it or not. He spoke very quickly. It took him seven or eight minutes to finish what he thought should be said.

After explaining to Tang Xinyu, Xiao Yuan prepared to analyze the word game. After copying the game, he found that the game file was not an executable file under Windows at all, but an executable file belonging to another system.

It couldn't run under dos. The tools he prepared now couldn't disassemble it at all, and naturally couldn't analyze it, so he had to give up the analysis plan temporarily.

After all the work was done, Xiao Yuan also partitioned and formatted the hard drive on the teacher's computer, and then installed the operating system. As for the hidden partition, it would not cause any harm to the computer, and because there was another one in it that he was very fond of.

The game he was interested in was not analyzed, so he kept the hidden partition temporarily without deleting it.

After finishing all the work, it was already past ten o'clock in the evening. Xiao Yuan stopped staying here and was about to get up and leave.

"Xiao Yuan, what are you going to do with that challenge?" Tang Xinyu asked before leaving.

"Since everyone has already sent the challenge to our computer room, we naturally have to accept the challenge." Xiao Yuan replied, then smiled mysteriously, and then said, "But it seems that this guy is preparing for an online competition.

, I haven’t mastered it yet, so I’m going to go back and talk to my master and let him take action personally, haha.”

"By the way, do you want a copy of this address?" Tang Xinyu took out the piece of paper with the address and asked.

"No need, I've already remembered it." Xiao Yuan waved his hand, stopped staying here, and strode away.

While riding a bicycle on the streets of Nanzhou City, a gust of cool wind blew by. Xiao Yuan raised his head and let the cool night wind blow his hair flying, feeling very comfortable.

From Nanzhou Yigao to Lushi Street, he needs to pass by Xizi Alley. Xizi Alley is called Xiangxiang. It is actually a north-south street close to the wide Nanhe River. Nearly half of the restaurants and bars in Nanzhou City are concentrated here.

and dance halls and other entertainment venues. Every night, the dim lights from the boat on the river, and the colorful neon lights on the shore, make the entire Nanhe River sparkle, making it particularly attractive.

Xizi Alley has always been the busiest place for nightlife in Nanzhou City. When outsiders come to Nanzhou and ask about fun places, locals will usually recommend Xizi Alley to them. However, old Nanzhou people know that Xizi Alley is actually Nanzhou

The largest red light district.

Xiao Yuan is a native of Nanzhou. Although he passes by here every day, due to his age and his father's strict control over him, he rarely goes to Xizi Alley. At most, when passing by, he turns around curiously.

Take a look inside.

It was the same today. Xiao Yuan passed by the intersection of Xizi Lane and looked inside a few times out of habit, but suddenly and unexpectedly found an acquaintance.