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

Normalize a vector, Normalize a vector Let's imagine we want  to norma...

Normalize a vector Let's imagine we want  to normalize a vector  of three  variables;  that  is to compute a new  vector  of three values,  such that its size  is 1. Here is o

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

Lcr circuit, program on damped lcr cicuit

program on damped lcr cicuit

Conditionals-for and while, For and While   If we want  to do some o...

For and While   If we want  to do some operation or set of operations various  times, we can handle the process  in several  different types.  The most straightforward types

Structured assignment, Structured assignment Once  we have  tuples and...

Structured assignment Once  we have  tuples and lists, we may use  a nice trick  in assignment expression, based  on the packing and unpacking of tuples. >>> a, b, c = 1, 2

Euler method, python program of motion of a particle in viscus medium

python program of motion of a particle in viscus medium

Indentation and line breaks, Every programming language has to have  some m...

Every programming language has to have  some method for indicating grouping of operations. Here is how you execute an if-then-else structure in Java:   if (s == 1){ s = s

Adding numbers, a code to add two numbers

a code to add two numbers

Re-writing a C++ code in Python with the help of ctypes, I have a C++ code ...

I have a C++ code (10-15 line) which i need to re-write in python with the help of ctypes library. Is it possible i can get some help with it? Thanks & regards Tanmoy

Wwrite a function, I

I

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