Why is ROP used?

Return-oriented programming (ROP) is a computer security exploit technique that allows an attacker to execute code in the presence of security defenses such as executable space protection and code signing.

How do ROP gadgets work?

ROP makes use of actual executable code sequences, called ROP gadgets, in the program memory space (marked as executable memory). Rather than the attacker supplying executable code (shellcode) in the attacker supplied data, the attacker now supplies a sequence of data and return addresses, called a ROP chain.

What is RET ROP gadget detection?

Return-Oriented Programming (ROP) is a new technique that helps the attacker construct malicious code mounted on x86/SPARC executables without any function call at all. Preliminary experimental results show that DROP can efficiently detect ROP malicious code, and have no false positives and negatives.

Is ROP Turing complete?

1 Given a sufficiently large code- base (such as the ubiquitous libc), ROP has been shown to be Turing complete.

What is an ROP?

Retinopathy of prematurity (ROP) is an eye disorder caused by abnormal blood vessel growth in the light sensitive part of the eyes (retina) of premature infants. ROP generally affects infants born before week 31 of pregnancy and weighing 2.75 pounds (about 1,250 grams) or less at birth.

What will happen if we mark the stack and heap segments as non executable?

If we mark the stack and heap segement as non executable, 1.0 No code will execute. 2.0 return-oriented programming will also not be able to exploit it.

What is ROP chain?

Return Oriented Programming (or ROP) is the idea of chaining together small snippets of assembly with stack control to cause the program to do more complex things.

What is ROP buffer overflow?

When a buffer has a certain size, fill the buffer and an add additional code so that the attacker can execute another function in the code or his/her own shellcode. ROP attack: Give a certain input which can override the return address, so that the attacker can control the flow.

What is randomization in cyber security?

Address space layout randomization (ASLR) is a memory-protection process for operating systems (OSes) that guards against buffer-overflow attacks by randomizing the location where system executables are loaded into memory. ASLR is able to put address space targets in unpredictable locations.

Does Aslr prevent ROP?

One of the many techniques developed to prevent ROP attacks is address space layout randomization (ASLR), a process implemented in almost all operating systems. Microsoft and Intel recently joined forces to strengthen hardware protection against the widespread use of ROP.

What does Aslr randomize?

What is ROP and roq?

ROP defines the when of the planning system, and ROQ defines how much. Also, ROQ is simply an inventory planning component, whereas ROP may be influenced by management due to cash-flow and current business conditions.

What is jump-oriented programming (Jop)?

In this paper, we present an alternative attack paradigm called jump-oriented programming (JOP). In a JOP-based attack, the attacker abandons all reliance on the stack for ret for gadget discovery and chaining, in- stead using nothing more than a sequence of indirect jump instructions.

What is return oriented programming (ROP)?

From Wikipedia, the free encyclopedia Return-oriented programming (ROP) is a computer security exploit technique that allows an attacker to execute code in the presence of security defenses such as executable space protection and code signing.

Is return-oriented programming attack superior to the other attack types?

A return-oriented programming attack is superior to the other attack types discussed both in expressive power and in resistance to defensive measures.

Is it possible to perform return-oriented programming without using a return instruction?

According to the paper of Checkoway et al., it is possible to perform return-oriented-programming on x86 and ARM architectures without using a return instruction (0xC3 on x86). They instead used carefully crafted instruction sequences that already exist in the machine’s memory to behave like a return instruction.

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