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

Python programing, Task (Anagrams) Write a function that checks whether two...

Task (Anagrams) Write a function that checks whether two words are anagrams. Two words are anagrams if they contain the same letters. Fore example, silent and listen are anagrams.

Otway rees protocol implementation, I need server, client and trusted side ...

I need server, client and trusted side communicating and charging a service with that protocol (or needham shroeder)

Internal models, Internal models As we want to create  more and more c...

Internal models As we want to create  more and more complex  machine with  software programs as controllers, we search  that  it is often needful  to create  additional types

Simple expressions, Simple expressions A cornerstone of a programming ...

Simple expressions A cornerstone of a programming language is the  ability  to compute expressions.  We will start here  with  arithmetic expressions, just to take the  concep

Hw, Suppose the cover price of a book is $24.95, but bookstores get a 40% ...

Suppose the cover price of a book is $24.95, but bookstores get a 40% discount. Shipping costs $3 for the first copy and 75 cents for each additional copy. What is the tota

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

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

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

assignment 10, #question.Program 10 Assignment (Banking Objects – Savings/...

#question.Program 10 Assignment (Banking Objects – Savings/Checking Accounts) Create a program named 10.py that performs the following: Create a class named ChkAcct, and a class n

Program requests password to display information of author, Write a program...

Write a program that requests a password after the author/program information is displayed. Make the password "hello". The program should then ask the user for their name: if the n

Write Your Message!

Captcha
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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd