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- Metamorphic_code abstract "Metamorphic code is code that when run outputs a logically equivalent version of its own code under some interpretation. This is similar to a quine, except that a quine's source code is exactly equivalent to its own output. Metamorphic code also usually outputs machine code and not its own source code. This is used by computer viruses to avoid the pattern recognition of anti-virus software. Metamorphic viruses often translate their own binary code into a temporary representation, editing the temporary representation of themselves and then translate the edited form back to machine code again.This procedure is done with the virus itself, and thus also the metamorphic engine itself undergoes changes, which means that no part of the virus stays the same. This differs from polymorphic code, where the polymorphic engine can not rewrite its own code. Metamorphic code is used by some viruses when they are about to infect new files, and the result is that the next generation will never look like current generation. The mutated code will do exactly the same thing (under the interpretation used), but the children's binary representation will typically be completely different from the parent's. Mutation can be achieved using techniques like inserting NOP instructions (brute force), changing what registers to use, changing flow control with jumps, changing machine instructions to equivalent ones or reordering independent instructions.Metamorphism does not protect a virus against heuristic analysis.Metamorphic code can also mean that a virus is capable of infecting executables from two or more different operating systems (such as Windows and GNU/Linux) or even different computer architectures. Often, the virus does this by carrying several viruses within itself. The beginning of the virus is then coded so that it translates to correct machine-code for all of the platforms that it is supposed to execute in. This is used primarily in remote exploit injection code where the target platform is unknown.".
- Metamorphic_code wikiPageExternalLink hunting.for.metamorphic.pdf.
- Metamorphic_code wikiPageID "861400".
- Metamorphic_code wikiPageLength "2896".
- Metamorphic_code wikiPageOutDegree "25".
- Metamorphic_code wikiPageRevisionID "679305441".
- Metamorphic_code wikiPageWikiLink Antivirus_software.
- Metamorphic_code wikiPageWikiLink Brute-force_attack.
- Metamorphic_code wikiPageWikiLink Category:Computer_viruses.
- Metamorphic_code wikiPageWikiLink Computer_architecture.
- Metamorphic_code wikiPageWikiLink Computer_virus.
- Metamorphic_code wikiPageWikiLink Heuristic_analysis.
- Metamorphic_code wikiPageWikiLink Interpretation_(logic).
- Metamorphic_code wikiPageWikiLink Linux.
- Metamorphic_code wikiPageWikiLink Logical_equivalence.
- Metamorphic_code wikiPageWikiLink Machine_code.
- Metamorphic_code wikiPageWikiLink Microsoft_Windows.
- Metamorphic_code wikiPageWikiLink NOP.
- Metamorphic_code wikiPageWikiLink Operating_system.
- Metamorphic_code wikiPageWikiLink Pattern_recognition.
- Metamorphic_code wikiPageWikiLink Polymorphic_code.
- Metamorphic_code wikiPageWikiLink Quine_(computing).
- Metamorphic_code wikiPageWikiLink Self-modifying_code.
- Metamorphic_code wikiPageWikiLink Shellcode.
- Metamorphic_code wikiPageWikiLink Simile_(computer_virus).
- Metamorphic_code wikiPageWikiLink Source_code.
- Metamorphic_code wikiPageWikiLink Strange_loop.
- Metamorphic_code wikiPageWikiLink Timeline_of_computer_viruses_and_worms.
- Metamorphic_code wikiPageWikiLink Zmist.
- Metamorphic_code wikiPageWikiLinkText "Metamorphic code".
- Metamorphic_code wikiPageWikiLinkText "metamorphic code".
- Metamorphic_code wikiPageWikiLinkText "metamorphic".
- Metamorphic_code wikiPageUsesTemplate Template:Fact.
- Metamorphic_code wikiPageUsesTemplate Template:Reflist.
- Metamorphic_code subject Category:Computer_viruses.
- Metamorphic_code hypernym Code.
- Metamorphic_code type Film.
- Metamorphic_code comment "Metamorphic code is code that when run outputs a logically equivalent version of its own code under some interpretation. This is similar to a quine, except that a quine's source code is exactly equivalent to its own output. Metamorphic code also usually outputs machine code and not its own source code. This is used by computer viruses to avoid the pattern recognition of anti-virus software.".
- Metamorphic_code label "Metamorphic code".
- Metamorphic_code sameAs Q6823026.
- Metamorphic_code sameAs کد_دگرریخت.
- Metamorphic_code sameAs Kod_metamorf.
- Metamorphic_code sameAs m.03j7g1.
- Metamorphic_code sameAs Q6823026.
- Metamorphic_code wasDerivedFrom Metamorphic_code?oldid=679305441.
- Metamorphic_code isPrimaryTopicOf Metamorphic_code.