User Account

All Pages

Common Vulnerabilities, Python Programming

Assignment Help:
1 Low Level Exploits
1.1 Savegames
Jimmy is becoming increasingly frustrated at the computer game hes playing.
He has a save right before the levels boss but he needs either more health
or more gold in order to win. The game is loaded from a normal file on disk
but the health and gold are encrypted in some complicated fashion. The
1
characters name is not, however.
1. Set the characters gold or health to a number greater than 9000 by
utilising a buffer overflow. How did you achieve this? Explain using
reference to bytes and ASCII as to what the exact value was that you
achieved. [4 marks]
2. How could this exploit be prevented? [2 marks]
3. Could this exploit be useful for more than just the game? Could it be
used to gain access to a system? If not, why not? If so, where might it
be used? [4 marks]
1.2 General Questions [11 marks]
1. Why is it necessary for us to provide the flag -fno-stack-protector to
GCC? What is a canary in terms of a buffer overflow and how can a
canary prevent a buffer overflow exploit? [4 marks]
2. If the game above was written in Java instead of C, would the savegame
still be exploitable? [2 marks]
3. Imagine you were exploiting a program that was running with escalated
privileges (i.e. could read sensitive files, modify other users settings and
so on) is it possible to obtain a BASH shell using buffer overflows? Be
sure to explain what shellcode is and how the shellcode is executed1
.
[5 marks]
2 SQL Exploits (10 marks)
1. Show how it is possible to log in as any user by performing an SQL
injection attack on the username/password login page. [2 marks]
2. The website has been clued in on their major security problem and prevented
the previous attack. Is it possible to use the status query to work
out the password of one of the administrators Bobby2
? [4 marks]
1The traditional introduction to this topic is Smashing The Stack For Fun And Profit:
https://www.phrack.com/issues.html?issue=49&id=14
2SQLite (the database in use here) doesnt allow multiple SQL statements to be executed
in a single execute query consider using substr and subqueries
2
3. How can these attacks be prevented? Is it a difficult security problem
to fix? Why is it so common? [4 marks]

Related Discussions:- Common Vulnerabilities

Practical data science with python, 3 task preparation,exploration and repo...

3 task preparation,exploration and report q

Analytical models, Analytical models Analytical tools  are very importa...

Analytical models Analytical tools  are very important.  It may  be hard  to check  the  correctness of a machine by trying it in several possible  initial  conditions with  al

Graphing Data, #que Write a program that will take price data for stocks an...

#que Write a program that will take price data for stocks and print it graphically to the screen. Your program should begin by asking the user for the file name. It should then cre

List mutation and shared structure, List mutation and shared structure ...

List mutation and shared structure Lists are mutable data  structures, which defines  that  we can actually modifies  the values  stored in their components. We do this by usi

#title.display of vanderwaals isotherm, draw the variation of pressure with...

draw the variation of pressure with volume of a real gas at temperatures lower than its critical temperature.also draw its surface of discontinuity

Synthetic models, Synthetic models One  goal  of various  people in a ...

Synthetic models One  goal  of various  people in a variety of sub-disciplines of  electrical  engineering and  computer science is automatic synthesis of machine from  formal

Particle Movement, Imagine a "particle" located on the centre square of a t...

Imagine a "particle" located on the centre square of a two-dimensional grid of dimensions 11 by 75. The particle can only move one square at a time, either up, down, left, or right

Programming embedded systems-programming models, Programming models Ju...

Programming models Just  as there  are several methods for organizing entire  software systems, there  are  different strategies for formally expressing computational processe

Interaction and debugging, We encourage you to adopt an interactive style o...

We encourage you to adopt an interactive style of debugging and programming. Use the Python shell a lot. Write short pieces of code and check them.  It is much  simpler to test the

Python style, Python  Style Software  engineering courses  often  pro...

Python  Style Software  engineering courses  often  provide very  rigid  guidelines on the style of programming, generally the appropriate value of indentation, or what  to us

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd