IF you are doing the assignment on your laptops rather than the VM.

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

Caveat

 

IF you are doing the assignment on your laptops rather than the VM.  In order to install and run Visual Studio, the machine you are using must meet or exceed the minimum hardware specification (see below).  If you run into difficulties with running the programme, please see the specifications below.

 

Hardware Specification

• 1.6 GHz or faster processor.

• 1 GB of RAM (for x86) or 2 GB of RAM (for x64); an additional 512 MB RAM recommended if running a virtual machine.

• 200 MB of available hard disk space.

• 5400 RPM hard disk drive.

• DirectX 9-capable video card that runs at 1024 x 768 or higher display resolution.

 

With the image provided by the college this should not be a problem any longer.

 

Software Specification

• Visual Studio 2019 (C# and perhaps Python)

Steps

 

(a) Visual Studio

 

The image provided by the institute has a preinstalled version of Visual Studio.

 

(a) Running the program in Visual Studio 

 

1.  Create the directory C:\Data\Temp

2.  Create a short text file (1/2 page of text), save it as MyData.txt in the directory specified in step 1.

3.  Start Visual Studio.   The program will run in Visual Studio 2019 in the image environment 

      supplied by the Institute.  Go to Start -> All Programs -> Visual Studio 2019

4.  Create a New Project, Scroll and select Console Application (.NET Framework) (using the Visual 

      C# template), highlight and press next.

5.  Give the application a name CryptoProgA and change the Framework to .NET Framework 4.7.2

6.  Delete the code on the console window and paste the Crypto Program code (see assignment 

     folder and code document) into the console window.

7.  Comment out those lines that have the function of deleting the key from memory.  

8.   Simply click Start on the Main Menu to run the program.

 

(b) Performing a RAM Dump

 

1.  Perform a memory dump of machine’s RAM.    

2.   Analyse dump using forensics tools and visual inspection and see if you can find the key.  

 

(c) Key Management in memory

 

The program contains 2 lines of code:

 

ZeroMemory(gch.AddrOfPinnedObject(), sSecretKey.Length * 2);

gch.Free();

 

       Provide an explanation for both lines of code, what does the code do and how?  Note:  these 

       lines should be commented out prior to beginning your assignment.

 

(d) Finding the key

 

Hnt:  Use breakpoints.

 

 

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