allenpu/computer_security_assignment

Computer_Security_Assignment

I used C++ to do this assignment As you can see , the very first step is the main.cpp which implemented the requirement of the Assignment to check if the Pe-1.txt included,if not, write in and create the file, etc.

The file follows the rule: main.cpp ->compile to .o file -> than link to .exe file

I also attached the encrypted file.

Script and files
The simple C++ script is to overwrite the txt content

For Q1 STEP2 :

For Q1 STEP 3 PACKING: First paste the UPX.exe to the Desktop. Then win+R input CMD AND cd to the directory to the Desktop Command : upx Directory\PE-Input.exe UNPACKING: Same place: Command: upx -d Directory\PE-Input.exe

For Q1 STEP 4: I used the WINDOWS system to encrypt the exe file. Right click in exe and choose Property Then Click Advanced Then choose encryot That is the procedure. And I run the encrypted file with the VirusTotal: I got this: