Returning to the room where Kapatha and the two stayed again, Xiao Yuan saw that Capa was still debugging the instrument, so he stood at the door and watched him busy.

"Kapa, hurry up." Jiang Hua urged.

"Right away, wait another ten minutes." Kaparski didn't look back and said.

"Tiff, tell Xiao Yuan what these devices are for." Jiang Hua saw Tiff sitting there doing nothing, so he commanded.

Tiff stood up from her seat, and when Xiao Yuan walked to her side, she said, "According to the information Jiang Hua brought over, the satellite you are going to invade this time is a STE011 digital TV relay satellite produced by MSTE in the United States. ”

Speaking of invasion, Tiff glanced at Xiao Yuan and asked, "Are you really sure you want to invade a satellite?" ”

"The invasion is not the goal, my purpose is to obtain the source of the video signal in the fighting ring." Xiao Yuan said.

"Okay." Tiff shrugged her shoulders and continued, "It's not easy to hack a satellite that might just have a few computer hardware chips and the embedded systems that are responsible for the proper functioning of those chips, and the probability of failure is much greater than the probability of success, you have to know that first. ”

"Of course I know this, you can go ahead." Xiao Yuan nodded.

"Okay then." "Do you know the basic process of hacking a satellite? ”

"Of course I know that." Xiao Yuan smiled and said, he knew that Tiff actually didn't have much confidence in him, so he threw out such a series of questions, and he noticed that when Tiff asked him these questions, Kapaski, who lowered his head and debugged the equipment, was also listening with his ears pricked up.

"Can you tell me, I'll see if we have enough equipment." After listening to Xiao Yuan's answer, Kapaski interjected.

"Strictly speaking, what we have to do is not really to hack a satellite, because the real invasion needs to gain control of the satellite, and we don't need that much authority, we only need to get the video source information we need from the satellite." Xiao Yuan said.

After saying this, Xiao Yuan saw that Kapathsky and Tiff didn't mean to answer, and even Jiang Hua was listening, so he continued: "First of all, we need a satellite signal receiver to receive the corresponding video relay information from the satellite, and then demodulate the signal through the demodulator, and then divide the video data stream and the control information data flow from it, and then we analyze the control information flow, obtain the control protocol of the satellite, and transmit the control data to the satellite through the control protocol. Let it feed back to us the source address information of the band occupied by the video information of the broadcast arena, of course, here, we also need an RF information transmitter to work together, and that's about it. ”

Tiff and Kapathsky glanced at each other, although neither commented on Xiao Yuan's words, but judging from their expressions, they were still very satisfied with Xiao Yuan's answer.

"Well, my friend is right, right?" Jiang Hua asked happily.

"Yes, as we expected, it doesn't look like we need to have any additional equipment." Kapathsky said.

"Then you hurry up and don't waste time." Jiang Hua said.

"Okay, okay." Kapathsky hurriedly lowered his head and went to work, and the movements of his hands sped up a lot.

Tiff introduced the various instruments and equipment placed in the room to Xiao Yuan one by one, among these equipment, the demodulator, satellite signal receiver, radio frequency transmitter and so on he just mentioned are all available, and after the demodulator separates the signal, the control information flow can be transmitted to a computer in the room through a special device and the supporting software, they can analyze the control signal on this computer, and the results of the analysis can be sent to the radio frequency transmitter through the software. Exploratory visits to satellites.

After listening to Tiffie's introduction, Xiao Yuan breathed a sigh of relief, he was originally worried that the equipment Jiang Hua prepared for him and his idea were not suitable, but now it seems that this idea is superfluous.

Karpaski quickly finished commissioning all the equipment, then stood up, stretched his waist, and said, "That's it, we can start work soon." ”

"I suddenly had an idea." Xiao Yuan suddenly thought of a shortcut, so he said.

"What thoughts?" Jiang Hua asked.

"Can we get the detailed design data of STE011 from MSTE, in that case, we don't need to try to analyze the control protocol of the satellite, we must know that it is not easy to analyze a protocol from the data stream, and even the probability of failure will exceed the probability of success." Xiao Yuan said.

"Satellite design data is definitely top secret at MSTE, and I don't think it's much easier to get than it is to analyze satellite control protocols." Capa said.

"How can you know if you don't try, as long as their data is stored on the Internet, there is nothing impossible, is their server more secure than the Pentagon's server?" Xiao Yuan said.

"Not really, did you hack into the Pentagon's servers?" Kapathsky said with a wave of his hand, his eyes lit up.

"Hehe, that's just an analogy, I'm not idle and have nothing to do, I want the FBI to invite me to tea, what are you doing by invading the Pentagon?" Xiao Yuan waved his hand and categorically denied Kapaski's speculation.

"I thought you had invaded the Pentagon." Capa said with some disappointment.

"Capa, let's not talk about the Pentagon, let me ask you, the satellite protocol analysis will be done by you and Tiff, it should be fine, right?" Jiang Hua asked.

"No problem." Tiffie nodded.

"No problem, I'm an old partner with Tiff." Kapathski also said.

"Since there is no problem, let's divide the labor, the two of you are responsible for analyzing the satellite protocol, Xiao Yuan, you are responsible for obtaining the details of the satellite from MSTE." Jiang Hua said.

"Let's just arrange it, I need a computer with an internet connection, preferably a Linux system." Xiao Yuan said.

"Then you use this one, which is installed with a distribution version of Feonix that is currently very popular among hackers, I don't know if it suits you?" Kapathsky said.

"Feonix, hehe, agreeable, so agreeable." Xiao Yuan laughed and said, even Jiang Hua laughed, but neither of them explained anything, but their laughter made Kappa a little confused.

Xiao Yuan sat down next to the computer, turned on the computer, and watched the familiar logo of the feonix system appear on the computer screen for a few seconds, and a black login prompt appeared on the screen.

"I want the root account of this computer." Xiao Yuan said.

"Root account?" Kapathsky said with a frown.

"What, is there a problem?" Xiao Yuan asked.

"Oh, no problem." Kapathsky changed his smile and told Xiao Yuan the password of the root account of the computer, and then watched Xiao Yuan log in to the system with the root account, and the proficiency in it was still better than his, and then he left with confidence.

Xiao Yuan first checked the environment settings of the system, and then connected to the Xuanne open source community in China through TEL, downloaded some software packages and development kit source code, and after compiling in the system, he began to write some tools he needed, and at this time, Kaparsky and Tiff also began to receive video data streams from satellites, separated satellite control information from them, and then began to analyze those control data streams.