Didier Stevens

Tuesday 31 July 2007

YACoSTO, One Year Ago

Filed under: Reverse Engineering — Didier Stevens @ 6:04

One year ago, to the day, I posted YACoSTO. I explained how I reversed a program that “protects” data. This is one of my favorite posts, but it hardly gets any hits. I encourage you to read it, because this time, I focus on reversing the protected data rather than the program itself. You might learn a couple of new and simple techniques.

The binary tools I used for the YACoSTO post can be found here, I published them afterwards.

Contrary to what some of you might think, this is not a “I’m on holiday” post :-( . We took a short cruise in June. My sister-in-law, a professional wedding film producer, shot this movie (YouTube) during our holiday, hires version here. Absolutely no malware, hacking, revering, … in the movie, just holidaying.

Oh, and BTW, until now, nobody ever asked me what YACoSTO means…

6 Comments »

  1. What does YACoSTO mean? ;-)

    Yet Another ….?

    Comment by Security4all — Tuesday 31 July 2007 @ 6:35

  2. Yep!

    Comment by Didier Stevens — Tuesday 31 July 2007 @ 6:48

  3. > Oh, and BTW, until now, nobody ever asked me what YACoSTO means…
    Because they read your posts to the end.

    Comment by nfl — Tuesday 31 July 2007 @ 8:08

  4. [...] YACoSTO, One Year Ago – Come on people…read the post One year ago, to the day, I posted YACoSTO. I explained how I reversed a program that “protects” data. This is one of my favorite posts, but it hardly gets any hits. I encourage you to read it, because this time, I focus on reversing the protected data rather than the program itself. You might learn a couple of new and simple techniques. [...]

    Pingback by www.andrewhay.ca » Suggested Blog Reading - Tuesday July 31st, 2007 — Tuesday 31 July 2007 @ 22:02

  5. Just to annoy: Yet Another Case of Security Through Obscurity

    Comment by John Smith — Wednesday 1 August 2007 @ 6:12

  6. Sounds interesting but what does YACoSTO mean?

    Comment by Shaun — Sunday 25 April 2010 @ 21:33


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