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

Program to solve word search puzzles, This assignment involves writing a pr...

This assignment involves writing a program to solve word search puzzles. For example in the following word grid it is possible to find the words active, stock, ethernet and java. N

Non-local references, Non-local references So far, whenever we needed ...

Non-local references So far, whenever we needed to compute a variable, there  was  a binding for that  variable in the 'local' environment (the environment in which  we were e

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

Common Vulnerabilities, 1 Low Level Exploits 1.1 Savegames Jimmy is becomi...

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

Problem, an array A[0..n-1] of nr red elements, nw white elements and nb bl...

an array A[0..n-1] of nr red elements, nw white elements and nb blue elements in random order such that 0 = nr,nw,nb = n and nr + nw + nb = n, and arranging them such that all reds

program that receives as input from the user, Write an algorithm for a pro...

Write an algorithm for a program that receives, as input from the user, 2 string variables and 2 integer variables; then joins together and displays the combined strings; and final

Expert, how can i become an expert & solution provider in the CS/IT field?

how can i become an expert & solution provider in the CS/IT field?

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

write code for python characters stuffing program source code

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

what are the issues assciated with top-down analysis

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

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