oxsignal/backdoor-kaistgun

backdoor-KAISTGUN created by GitHub Classroom

IS-521 Activity 3

This repository is for my activity 3.

Two programs are executable.

• test.mini - Refer to test.md
• login.mini - Works as a login program given by pseudocode. backdoor can be added by interpreter.

Usage

I added my own script for convenience.

make 				         // compile
python execute.py [TESTCASE] // run

Running example

python execute.py test
python execute.py login
python execute.py backdoor

File history

Added

• backdoor/interpreter.c : Add backdoor routine.
• execute.py : A script for executing my program.
• test/test.mini : My own program written in mini language.
• test/test.md : Simple description for my program.
• login/login.mini : Login program written in mini language.

Modified

• compiler/compiler.ml : Add a gcd opcode.
• interpreter/interpreter.c : Add function for opcodes.
• Makefile : Add a set of rule to compile codes.

What I learned

I was able to learn how compiler works.

Without OS, I should manage all of memory spaces (Heap, Code, Reg etc.). It is very cumbersome.

I spent a lot of time in engineering to do this project,so I learned how I can reduce time for debugging, making bytecode efficiently.