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

CIS, Define a function that draws a pentagon of a size you provide when you...

Define a function that draws a pentagon of a size you provide when you call the function. Include a ''''''docstring'''''' as the first line of the function''s body — it tells the p

Foundation of programming, hi i want to make a assignmnt of foundation of p...

hi i want to make a assignmnt of foundation of programming which include 4 task. I just want to know how much will be the price for that

Basics of python-introduction, Basics of python-introduction Python is...

Basics of python-introduction Python is designed for easy interaction between a user and the system. It goes with  an inter­ active function  known as  a shell or listener.  T

Python-models, Models It is a new system that is considerably easier th...

Models It is a new system that is considerably easier than  the system being modelled, but which saves the important points of the original machine. We might create a physical

Packages and Libraries, For this assignment, you need to create a program t...

For this assignment, you need to create a program that allows the user to do basic trigonometry functions. First, ask the user if he or she would like to do sine, cosine, or tangen

Python programme comparing for and while loops, 1)    Write a python progra...

1)    Write a python programmecomparing for and while loops like the following. Math Times table For Loop: 2x1=2 2x2=4 ..... 2x12=24 While Loop: 3x1=3 3x

Create a program to produce a business speak phrase, The goal of this exerc...

The goal of this exercise is to write a \business phrase" generator, which each time it is called produces lines of business speak, such as: It's time that we became uber-effici

#cmdprobs, #Why can''t I cd my Desktop? A minute ago I would open up cmd an...

#Why can''t I cd my Desktop? A minute ago I would open up cmd and it starts in C:\Users\myname but now it''s starting in C:\WINDOWS\system> and I don''t where I am or how to get ou

Character stuffing.., write code for python characters stuffing program sou...

write code for python characters stuffing program source code

File handling , A program to count how many files are on the file system wh...

A program to count how many files are on the file system which displays summary information regarding the total number of bytes used by all files and a breakdown of the number of b

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