Xueba's Sea of ​​Stars

Chapter 215 App Market
In Dongyuan Restaurant, three men and a woman sat at a table in the corner.

At this time, Wu Bin already knew that the senior named Mao Rui in front of him was a programmer who was studying in graduate school, and that Senior Qin was here to attend.

After getting to know each other, Mao Rui first looked at Wu Bin and said, "Then I'll get straight to the point. I've seen the cheating program you changed, and it's very thoughtful and powerful, so I want to ask you to come out and discuss a few issues, no Excuse me?"

Wu Bin waved his hand: "There's nothing to bother me, the senior said too seriously."

"Don't call me senior, just call me Mao Rui."

Seeing Wu Bin nodding, Mao Rui continued, "Are you familiar with cracked versions in the app market?"

"Well, no stranger."

"Actually, the two things work in the same principle. These cracked apps are made by third-party developers who back-translate the original apps, add or delete certain functions, and finally recompile and package them into new apps and release them to the app market. middle."

Wu Bin thought for a while, then nodded to express his understanding.

"This problem has always been a big problem in the app market. Of course, most people like to be able to play good games for free, but in fact, how can these third parties who repackage apps be good people? It’s okay to make some money by advertising, but it’s getting worse recently.”

Mao Rui said as he snapped his fingers, "It's like inserting a malicious program to steal user privacy, tampering with links inside to cheat traffic or lure users to visit malicious websites, what..."

"But the most important thing is to affect the interests of the genuine app, right?" Wu Bin interrupted suddenly.

"Hahaha, it seems that my brother is a straightforward person. That's right. If it doesn't affect the legitimate interests, who will care about the life and death of users, then I won't preach Wei Guangzheng with you. Let's talk about something practical."

Qin Simeng, who was drinking at the side, almost choked, this is too much nonsense...

Li Yan, on the other hand, looked at the two of them with great interest, and seemed very interested in this topic.

After taking a big sip of iced black tea, Mao Rui patted the table and said, "Manual review is of course unreliable to control this phenomenon. I have to praise Apple here. The ecosystem they built is really awesome, but Android There is no such fate, so there is related research on automatic repackaging detection, which is the direction I am working on now."

"Outsourcing?" Wu Bin knew that Mao Rui was still in graduate school, so it was definitely not his job.

"Tsk, don't look down on outsourcing. If it's done well, it will be credited with a lot of money."

Wu Bin shook his head: "Oh, I don't mean to look down on you, so I just asked casually."

Not paying too much attention to Wu Bin's statement, Mao Rui continued: "My idea is that if the application market can throw all the APKs in the market into one tool, then the tool will automatically recruit those repackaged applications. Isn't it beautiful."

After hearing this, Wu Bin couldn't help saying: "This has to be solved. How to put a mark on the app, or "birthmark"? As long as the repackaged files have the same birthmark, they can be distinguished from those apps without birthmarks. coming."

"Professional!" Mao Rui gave Wu Bin a thumbs up, "That's why I came to you. In your modeling, I saw this possibility and found that you are definitely a talent!"

"Don't dare."

"Whoever you dare to be, don't be humble." After Mao Rui finished speaking, he took out his laptop from the schoolbag he was carrying, and opened a file to show Wu Bin a directed graph.

"Look, the current application uses the interface as a node. When the interface jumps, a directed graph will be built for the edge. The label on the edge is the event that triggers this edge. The running process of this graph is just Can serve as a birthmark for an app."

Then seeing Wu Bin who opened his mouth to ask, Mao Rui said first: "The current problem is that the 'birthmark' is not perfect, and there are still repackaged applications that escape various detections. By the way, even many application markets are almost There is no review mechanism."

"That's why the original version was starved to death." Wu Bin spread his hands.

"Well, so our generation of programmers has a long way to go." Sighing, Mao Rui continued to open a file and said: "These days the code world is one foot high, and the magic is one foot high. By scanning the binary code Checking and packaging has become more and more difficult, a lot of garbage control flow, reflection, and magic bytecode modification, can you feel it?"

"Yes." Wu Bin nodded.

While the two were having a heated chat, Li Yan found that Qin Simeng who was sitting opposite him seemed to be listening very seriously, but soon found that this seriousness did not seem to be aimed at the topic Wu Bin and Mao Rui were talking about, but rather For Wu Bin.

'If this is Two-dimensional, this sister Qin Xue's eyes are probably about to burst out with love. '

"Oh...you are a poor man again."

Li Yan, who has been with Wu Bin for so long, naturally understands how miserable it is for a girl to become interested in Wu Bin...

The last whole afternoon was spent in the discussion between the two, and Mao Rui's affirmation of Wu Bin was getting higher and higher.

"I'm going to go get dinner, do you want to bring some for you?" Li Yan, who had been listening all afternoon, was not able to participate in the discussion, so he was still not as focused as the two in front of him.

"Wow, it's all ordered." Mao Rui glanced at the phone and exclaimed, "Then let's eat first."

Wu Bin also nodded, and went to cook with Li Yan.

When queuing up, Mao Rui asked Wu Bin, "Since you are not from the Faculty of Letters, you learned all of these by yourself?"

"Well, I'm interested in programming languages."

This sentence made Li Yan, who was behind them, burst into sweat. He suddenly remembered that when he participated in the competition, Wu Bin suddenly asked him if he knew anything about programming languages, that is, he just became interested in programming languages ​​​​a year ago.

However, it's only been so long, even the big cows of the Faculty of Science and Technology of the University of Science and Technology have affirmed him endlessly.

"Let me tell you, with your brain, if you study it systematically, you will become a market tycoon in no time. I'm not bragging. Talent like you is very much needed in the programming world now."

"Thank you senior for your affirmation, but I don't have the idea of ​​crossing borders yet. For now, I still prefer physics."

"Oh yes, I forgot, you are at the level of publishing "Science Advances" in the physics world, cowhide, I have seen so many geniuses in HKUST, and I have never seen someone as good as you."

"Yes, I haven't seen it either." At this time, Qin Simeng who was behind also suddenly interrupted.

After hearing this, Mao Rui took a look at Qin Simeng: "You can indeed learn more from him in the future, I guarantee that at his current level, if you team up with someone from your academy to go to C4, then you will definitely be at the top level." .”

"Well... I can hear it." Qin Simeng nodded, then looked at Wu Bin and said, "If there is anything I don't understand in the future, please ask Wu Xueba to enlighten me."

(End of this chapter)