Structured vs object oriented programming object oriented. Exercises 1 incorporate objects into the dynamic programming example from earlier. When using rop, an attacker uses hisher control over the stack right before the return from a function to direct code execution to. The core of the pure objectoriented programming is to create. Defending against return oriented programming vasileios pappas return oriented programming rop has become the primary exploitation technique for system compromise in the presence of nonexecutable page protections.
You may well be an accomplished oop programmer already, in which case its still a good idea to scan this chapter. Good programming takes a lot of discipline, a large number of principles, and standard, defensive ways of doing things right. In this sense, the adversary needs to be able to carry out a stack smashing attack, usually through a stack buffer overflow, to overwrite the return. In data oriented design you are thinking how data is touched and processed.
You might begin by making it use the serisfnclass described above. The popularity of objectoriented programming oop in current software practice is evident. In the previous chapter, creating the deck class was a step toward object oriented programming. Generally, these types of attacks arise when an adversary manipulates the call stack by taking advantage of a bug in the program, often a buffer overrun. The term objectoriented programming is derived from the object concept in the simula 67 programming language. Sigreturnoriented programming srop is a technique similar to returnoriented programming rop, since it employs code reuse to execute code outside the scope of the original control flow. Microsoft powerpoint object oriented programming with matlab master class.
Objectoriented programming, functional programming and r johnm. By creating proof of concept exploits for cve20070038 it is shown, that combining return oriented and jump oriented programming with heap spray payload delivery gives new perspectives to attackers. University of california berkeley engineering 7 department of. In object oriented programming you are focusing on a single object class its methods, members, etc. Most java programs are object oriented, which means that the focus is on objects and their interactions. Return oriented programming is an advanced version of a stack smashing attack. Introduction to object oriented programming in java. Objectoriented i focus on code reuse and reliability i an object is data and methods to manipulate it i take components that are used repeatedly and share characteristics and implement as a class others. From structured programming to objectoriented programming. Introduction to object oriented programming in java computer applications in power systems advance course eh2750. Designing classes clearly is programming, yet to make s useful as an interactive data analysis environment, it makes sense that it is a functional language. A program is a set of instructions written in a programming language.
It does not require knowing object oriented programming. In addition, programmers can create relationships between one object and. The approach is to focus on the data layout, separating and sorting fields according to when they are needed, and to think about transformations of data. Packed, printable, and polymorphic return oriented programming kangjie lu 1. Towards objectoriented programming aalborg universitet.
A comparative analysis of structured and object oriented programming methods corresponding author. Return orientedprogramming rop ftw by saif elsherei. Eight professional programmers experienced with procedural programming languages and either experienced or not experienced in object oriented programming. If you read types and programming languages, you get a sense for just how much complexity objects add to your world. So rop stands for return oriented programming and this is a concept that was originally part of linux exploitation in a technique known as return to libc.
Introduction to objectoriented programming in matlab. In a pop method, emphasis is given to functions or subroutines. While this popularity may result in part from the tendency of programmers to chase after the latest fads in programing languages, there is undeniably some real substance in the growing use of oop. While this popularity may result in part from the tendency of programmers to chase after the latest fads in programing languages, there is undeniably some real substance. Organization of concurrency, through the monitor concept. First i want to say, that dataoriented design and datadriven programming is not the same. First i want to say, that data oriented design and datadriven programming is not the same. Demonstrates how general the two steps of a control. In a buffer overrun, a function that does not perform proper bounds checking before storing userprovided data into memory will accept more input data than it can.
Rop exploits are facilitated mainly by the lack of complete address space randomization coverage or the pres. Object oriented programming oop is an approach to program organization and. In that language an execution of a computer program is organized as the joint execution of a possibly variable collection of objects. This tutorial is a guide to object programming with r or s4. A comparative analysis of structured and objectoriented programming methods corresponding author. Each object has its own memory made up by other objects. Object oriented programming follows bottom up approach in program design and emphasizes on safety and security of data. Many methods that work for double matrices have not been implemented.
Paul schrimpf matlab objectoriented programming january 14, 2009 14 15. To perform object oriented programming, one needs an object oriented programming language. Erdodi applying return oriented and jump oriented programming exploitation techniques with heap spraying 158 the dispatcher gadget is the most important part of the attack. A program is a set of objects telling each other what to do by sending messages. In objectoriented programming you are focusing on a single object class its methods, members, etc. Objectoriented programming represents an original implementation issue due to its philosophy of making the program behaviour depend on the dynamic type. Return oriented programming various instruction sequences can be combined to form gggadgets pop eax gadgets perform higherlevel actions wit ifi 32bit l add eax,ecx ret mov eax,ecx ret write specific 32bit value to specific memory location addsubandorxor value at. The pdf version is an almost complete subset of the html version where only a few, long program listings have been removed. All objects of a specific type can receive the same messages. Stringorientedprogramming sop uses a format string bug to get the control flow sop uses two scenario to get the control of the application direct control flow redirect.
Aug 17, 2016 so rop stands for return oriented programming and this is a concept that was originally part of linux exploitation in a technique known as return to libc. In this and the following chapter we will gradually unveil important theoretical and conceptual aspects of objectoriented programming. Here are some of the characteristics of object oriented programming. From structured programming to object oriented programming we will assume that the reader of this material has some knowledge of imperative programming, and that the reader already has been exposed to the ideas of structured programming. Paul schrimpf matlab objectoriented programming january 14, 2009 2 15. In the previous chapter, creating the deck class was. May 28, 20 return oriented programming rop is a powerful technique used to counter common exploit prevention strategies.
However, a minimum of knowledge about r and programming in general is necessary. Rop intel arm, tools, rop chain generation, gadgets semantics, aslr and nx internal, jop, sop, brop, srop, example with cve20111938. Besides the x86 and sparc, returnoriented programming has been extended to the atmel avr francillon and castelluccia 2008. Procedure oriented programming the word procedure is the key element here to notice. Many modern programming languages are object oriented, however some older programming languages, such as pascal, do offer object. For those who are complete beginners, see section d page 66 for some tutorial or book. It means a set of procedures which is a set of subroutines or a set of functions. Applying return oriented and jump oriented programming. Then, run any code of attackers choosing, including the code in the existing program. Functions are called repeatedly in a program to execute tasks performed by them. Objectoriented programming oop refers to a type of computer programming software design in which programmers define the data type of a data structure, and also the types of operations that can be applied to the data structure in this way, the data structure becomes an object that includes both data and functions. Return oriented programming based on hovav shacham, et al. In this sense, the adversary needs to be able to carry out a stack smashing attack, usually through a stack buffer overflow, to overwrite the return address contained inside the call stack.
There are various java programming and object oriented programming books around. Stringorientedprogramming sop uses a format string bug to get the control flow sop uses two scenario to get the control of the application direct control flow redirect erase the return address on the stack jump on a gadget which adjusts the stack frame to the attackercontrolled buffer if the buffer is on the stack we can use the rop. Return oriented programming rop is an attack that has. Concise guide to objectoriented programming an accessible. Represent programs as a set of objects that encapsulate data and methods state and behaviour and pass messages between one another. In computing, dataoriented design is a program optimization approach motivated by efficient usage of the cpu cache, used in video game development.
Noncontrol data exploits are used to mount information leakage attacks or corrupt a few bytes of program memory. In particular, rop is useful for circumventing address space layout randomization aslr 1 and dep 2. Introduction 2 pure object oriented languages five rules source. Much work has followed up the conference publications that make up the present paper. It is based upon the similarities between the process of assembling electrical control cabinets and plc control programs, so that, in the end, building a new program could be. However, this lecture notes are intended to go with a general purpose java reference such as zakhour et al. Asagba, prince oghenekaro 43 differ, a uniform approach is generally agreed upon. Alexander stepanovs complaint is blistering and accurate. Finally, we argue that the threa t posed by return oriented programming, across all architectures and sys tems, has negative implications for an entire class of secur ity mech anisms. Return oriented programming cs 44307430 compiler construction. A programming language provides the medium for conveying the instructions to the computer. Object oriented programming with ansic requires a fair amount.
Object oriented programming of logic controllers ooplc. This paper discusses about basic concept of procedure oriented programming and object oriented programming procedure oriented programming means set of procedure, which is a set of functions. Return oriented programming rop ftw exploit database. Most java programs are objectoriented, which means that the focus is on objects and their interactions. From structured programming to objectoriented programming we will assume that the reader of this material has some knowledge of imperative programming, and that the reader already has been exposed to the ideas of structured programming.
Sigreturn oriented programming srop is a technique similar to return oriented programming rop, since it employs code reuse to execute code outside the scope of the original control flow. Pdf applying return oriented and jump oriented programming. Towards object oriented programming in this and the following chapter we will gradually unveil important theoretical and conceptual aspects of object oriented programming. More specifically, we will assume that the reader has some background in c programming. Here are some of the characteristics of objectoriented programming. The book assumes no prior knowledge of coding in any language. Java software development and objectoriented programming paradigms a er learning the contents of this chapter, the reader would be able to. A typeful approach to objectoriented programming with. Finally, we argue that the threa t posed by returnoriented programming, across all architectures and sys tems, has negative implications for an entire class of secur ity mech anisms. Now well take a step back and consider the programming philosophy underlying classes, known as objectoriented programming oop. Introduction into object oriented programming and the difference between structured programming. Basic concept of object oriented and procedure oriented.
The object oriented approach to programming proved its usefulness in a number of areas, exploited by many researchers, e. An object oriented programming language oopl is a highlevel programming language based on the object oriented model. Essentially what its about is using code that already exists in the program youre exploiting to perform certain key functions for you. One of the most important features of object oriented programming is the ability to modify existing solution to solve new problems.
Besides the x86 and sparc, return oriented programming has been extended to the atmel avr francillon and castelluccia 2008. Objectoriented programming, functional programming and r. Objectoriented programming oop is a programming paradigm that uses objects and their interactions to design applications and computer programs. Oliveira, xuan bi and tom schrijvers accepted at the 34th european conference on object oriented programming ecoop. The collection as a whole is represented by a system object, and objects sharing a common. Questions 1 define objectoriented programming and explain feature of object oriented programming. Wikipedia includes features such as data abstraction encapsulation polymorphism inheritance object oriented oo programming. An introduction to the return oriented programming and rop. After this, in chapter 4 we will be more concrete and practical, again in terms of the hangman example. Implementing statically typed objectoriented programming. These include several versions of objectoriented programming, used in a large number of r packages. A comparative analysis of structured and objectoriented. Objects often represent entities in the real world.
Packed, printable, and polymorphic returnoriented programming. Good programmers make tools to dispose of routine tasks once and for all. Program structure and objectoriented programming nyu. It is a simple code block which has a register pointing dispatcher table index at the dispatcher table. Structured vs object oriented programming free download as powerpoint presentation. Return oriented programming and rop chain generation why and how course lecture at the bordeaux university for the csi master jonathan salwan nov 2014 keywords. Wikipedia includes features such as data abstraction encapsulation polymorphism. If a particular kind of problem has been solved using the oop approach, a similar but slightly different problem can usually be solved by making some changes in the objectmessage protocol that already exist. Class template for a set of objects class static variables that belong to a class. Design strategies and knowledge in objectoriented programming. As controlflow hijacking defenses gain adoption, it is important to understand the remaining capabilities of adversaries via memory exploits. Object oriented programming is the abstraction of ideas and items into data and the methods functions that operate on them. Modular programming modular programming is subdividing your program into separate subprograms such as functions and subroutines with modular programming, procedures of a common functionality are grouped together into separate modules a program therefore no longer consists of only one single part. How it is different than procedure oriented programming.
I decided to get a bit more into linux exploitation, so i thought it would be nice if i document this as a good friend once said you think you understand something until you try to teach it. In computing, data oriented design is a program optimization approach motivated by efficient usage of the cpu cache, used in video game development. In dataoriented design you are thinking how data is touched and processed. Returnoriented programming 14 general approach to control. Returnoriented programming is an advanced version of a stack smashing attack.
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