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

Programming embedded systems-programming models, Programming models Ju...

Programming models Just  as there  are several methods for organizing entire  software systems, there  are  different strategies for formally expressing computational processe

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

While loop, You should use for whenever you can, because  it creates  the s...

You should use for whenever you can, because  it creates  the structure of your  loops clear. Sometimes, however, you require to do an operation various times, but you don't want t

Primitives, Primitives, Composition, Abstraction, and Patterns   We ...

Primitives, Composition, Abstraction, and Patterns   We will  start  by thinking about  how  the  PCAP  framework applies to computer programs, in general. We may do that by

#1 - Pseudo Code, Ask question #Minimum 100 worIn this project, create the ...

Ask question #Minimum 100 worIn this project, create the pseudo code from the following request. The program must have some sort of menu that allows users to make selections to

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

Analytical models, Analytical models Analytical tools  are very importa...

Analytical models Analytical tools  are very important.  It may  be hard  to check  the  correctness of a machine by trying it in several possible  initial  conditions with  al

Variable, from urllib2 import urlopen var= ('' response">http://placekitt...

from urllib2 import urlopen var= ('' response">http://placekitten.com'') response = kittens.read(body) body = response[559:1000] print ''Kittens:'', response

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

Procedures as in First-class objects, Procedures as first-class objects ...

Procedures as first-class objects In Python, unlike  many  other  languages, methods are behave in much  the same way as num­ bers:  they  can be stored as values  of variable

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