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

Robotics, how to started robotics proggraming in begning

how to started robotics proggraming in begning

Structured data, Structured data We will often  want  to work  with  l...

Structured data We will often  want  to work  with  large  groups of data.   Rather  than  providing  each  number its own  value,  we need  to manage the data  into natural s

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

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?

Tower of Hanoi, Tower of Hanoi game that you can let a player to move discs...

Tower of Hanoi game that you can let a player to move discs between the towers using a mouse. Moreover, you are required to do the followings: •Graphically represent any state in t

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

Lost, Import the sample code below into the Python IDLE and enhance it, run...

Import the sample code below into the Python IDLE and enhance it, run it and debug it. Add features to make this a more realistic database tool by providing for easy data entry an

Van der waals equation of state, how to make a python programme for van der...

how to make a python programme for van der waals equation of state with surface discontinouty

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

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

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