Article View: comp.virus
Article #4738Virus Simulator MtE Supplement (PC)
From: Doren Rosenthal
Date: Wed, 23 Dec 1992 03:13
Date: Wed, 23 Dec 1992 03:13
68 lines
3526 bytes
3526 bytes
Doren Rosenthal
3737 Sequoia
San Luis Obispo, CA USA 93401
To: Vesselin Vladimirov Bontchev, Virus Test Center, University of Hamburg
In response to your questions posted on this forum about my Virus
Simulator MtE Supplement.
> 1) Does is simulate perfectly the behavior of the MtE?
YES. Although safe and controlled, these dummy sample programs behave
identically to those produced MtE mutation engine viruses.
>I.e., are the dummy files generated by it the same as if
>generated by the MtE? If not, then it is not good as a simulator,
>because the simulation is not
>perfect enough.
YES. The dummy simulations are the same as those encrypted by the
MtE mutation engine.
>2) If the answer of the above question is "yes", then it means that it
>uses the MtE itself to encrypt the dummy files - because using
>anything else would mean imperfect simulation. If it uses the MtE, do
>you include the MtE itself in the generated dummies?
YES. At the hart of the simulations is an actual MtE mutation
engine.
>3) If the answer of the above question is "no", then the simulation is
>again not good enough, since the only way a scanner could detect the
>unencrypted replicants of an MtE-based virus is to scan for a scan
>signature of the unencrypted body of MtE. If the answer of the above
>question is "yes", then it is pretty easy to extract the MtE from the
>unencrypted dummies... Therefore, you are distributing malicious
>software...
I disagree. Although these are real MtE viruses, steps have been taken to
insure they will only infect the dummy test programs provided and
modifications or reverse engineering has been discouraged.
>Conclusion: regardless how you answer to the above questions, either
>the simulator is useless, or you are distributing malicious
>software... Hmm, I was able to draw this conclusion even without
>having to look at the simulator... Pretty good, isn't it?... :-)
I'm disappointed that you would pass yourself off as a fair and open
scientist and researcher open to new ideas. Then ask what would appear to
be legitimate questions and without giving my response a fair hearing or
even examining the Virus Simulator MtE Supplement yourself, draw a
conclusion and announce your findings in a public forum.
I also do not appreciate being accused of distributing malicious software.
If you have evidence of this you should present it before posting anything
else on this forum or use the forum for a public apology.
>Leaving the ethical problems aside, do you try all kinds of flags
>(i.e., the contents of the AX register before calling the MtE)?
>Because, if you don't, you'll be able to generate only a small subset
>of the code that can be generated with the MtE...
The Virus Simulator MtE Supplement exercises as may flags and options as
possible.
Doren Rosenthal
Technical Details
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Path: arc1-ca.pugleaf.net!sparky!uunet!elroy.jpl.nasa.gov!usc!cs.utexas.edu!qt.cs.utexas.edu!yale.edu!jvnc.net!netnews.upenn.edu!netnews.cc.lehigh.edu!news From: as194@cleveland.Freenet.Edu (Doren Rosenthal) Newsgroups: comp.virus Subject: Virus Simulator MtE Supplement (PC) Message-ID: <0005.9301051858.AA13030@barnabas.cert.org> Date: 23 Dec 92 03:13:17 GMT Sender: virus-l@lehigh.edu Lines: 68 Approved: news@netnews.cc.lehigh.edu