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

Lab programming, protocol rdt2.2 considers there is a bit errors between se...

protocol rdt2.2 considers there is a bit errors between sender to receiver and also from receiver to sender. So now we have to consider checking bit errors introduced in reply from

Top-down approach, what are the issues assciated with top-down analysis

what are the issues assciated with top-down analysis

Algorithm, given number is prime number or not

given number is prime number or not

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

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

Range, Range Very frequently, we will want to iterate through a list o...

Range Very frequently, we will want to iterate through a list of integer values, often as indices.  Python gives a useful function, range, which gives lists of integers. It ma

Types and declarations, Java programs are  what  is known as statically an...

Java programs are  what  is known as statically and  strongly defined.  Thus,  the  kinds  of all the variables must  be known at the time that the program is written. That seems

List comprehensions, List Comprehensions   Python has a very nice b...

List Comprehensions   Python has a very nice built-in  facility for doing  many  iterative methods, known as list comprehensions. The basic template is       [

Prime number, Use the function to compute and print the sum of first n prim...

Use the function to compute and print the sum of first n prime numbers.

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

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