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

#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

Variable, from urllib2 import urlopen # Open http://placekitten.com/ for...

from urllib2 import urlopen # Open http://placekitten.com/ for reading on line 4! response = kittens.read() body = response[559:1000] # Add your ''print'' statement here!

Wwrite a function, I

I

Bank transfer, Bank transfer What  if we  have  two  values,  represen...

Bank transfer What  if we  have  two  values,  representing bank  accounts, and  need  to transfer an  amount of money  amt between them?  Consider that a bank account is show

Work with functions, inputWithinRange (prompt, lowValue, highValue) This fu...

inputWithinRange (prompt, lowValue, highValue) This function will ask for a number using the prompt parameter. The function will only return a value that is within the inclusive ra

Cps translator for python, Your task is to construct a translator from the ...

Your task is to construct a translator from the subset of Python in Project 3 intocontinuation-passing style (CPS). Of course, the expected way of accomplishing this is to trans

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

Python program, Write a program that asks the user to enter a number of sec...

Write a program that asks the user to enter a number of seconds. The responses of the program will vary depending on the length of seconds: • If the number of seconds is under 60

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

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

write code for python characters stuffing program source code

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