Introduction to Reverse Engineering

Cars don't usually run reverse, and I think reverse engineering is something you know about (forward) engineering.

A1.

I want to understand deeply just in case

If you don't understand "foot-to-foot engineering", it's meaningless.Without it, reverse engineering is 100 years early, to be honest.

A2. What kind of operating system does it include built-in uITRON? Does it include various microcomputers (RX/SH/ARM-Cortex/PIC, etc.)?

If you know the architecture, you can use any microcomputer in a short time (Oira is right, I guarantee you) and it doesn't taste good to use just one microcomputer.If you know why architecture is like that, you can apply it as much as you want.Assemblers are enough after that.

A3. If you are debugging at the assembly level, you know the ABI specification in that architecture.I don't need to ask.

It won't take 100 years.

If you're a student, we're holding a IPA security camp.
I think it's a good opportunity to get a lot of knowledge.

In order to participate, you must answer Application assignment to participate, so
Why don't you study to understand the challenges here?

Some excerpts from the questions

B.7 Why do you need to know semiconductors and machine languages in the cybersecurity field?

 ■ Common Problem C
It is a question of looking at the power of the C language, which is the basis for implementing the OS.
- Create a bidirectional link list in C.1.C language and a function to manipulate it and submit the source code.
  It is sufficient to have three functions: generating link lists, inserting elements anywhere, and printing all elements in the standard output in order.
  If you're motivated, you can implement more features!
- C.2. Please describe your design and implementation ingenuity.

 ■ Common Problem 4 Select at least one item you have experience with Linux programming.
Have created command line applications using Python, Ruby, Perl, etc.
I have created a daemon that manages memory by itself using C/C++ etc.
Have used Procfs or system calls (libc system call wrappers) to create applications/daemons to retrieve and configure information in the kernel
Have you created a Linux Kernel Module/Linux Security Module?
Have you added or modified features to your Linux kernel?
Have you posted patches to your Linux kernel?

The questioner's programming field is familiar. I can't help but feel that there is a huge gap between the word and the basic knowledge required for reverse engineering and hacking.