Common Vulnerabilities, 1 Low Level Exploits 1.1 Savegames Jimmy is becoming, Python Programming

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]

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages

Common Vulnerabilities, Python Programming

Related Discussions:- Common Vulnerabilities

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

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

Adding numbers, a code to add two numbers

Bank management, source code

Program that shows the use of all 6 math functions, Write an algorithm for ...

#booleans, #how they work

Create a program to produce a business speak phrase, The goal of this exerc...

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

Common errors and messages, Common Errors and Messages Here are some co...

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

Write Your Message!

Featured Services

Online Tutoring

Project Development

Exam Preparation

Course Help

Assignment Help

Popular Subjects

Assured A++ Grade

Academics

Major Subjects

Majors

Get In Touch

TERMS & POLICIES

HELP & SUPPORT