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- Caveman (crackme) ■ Ghiribizzo [OR&L/uCF] 1999
- ==============================================
-
- Those of you who have spoken to me on IRC may remember that I said I had ideas
- for 3 new crackmes. This first one is the one that requires the least
- coding/research. I've really enjoyed writing this one.
-
- Details
- -------
-
- The protection was originally going to be a hard-wired serial, but then I
- changed it to name/serial and finally to a keyfile. You can still see in the
- code the shoddy conversion - bugs creeping in from the conversion were a
- nightmare: they added a couple of hours to the development time :( I was
- considering leaving the extra 'interactive' code in, but decided against it in
- the end as it would make it too easy. Anyone who creates a keygen for this can
- have a copy of the original source code which includes 'interactive mode'.
-
- Cracking this requires knowledge of encoding, decoding, reversing, coding and
- not least of all, a bit of lateral thinking! Although this isn't particularly
- difficult, newbies may find some sections mystifying. For the advanced cracker
- wanting a challenge, try cracking it using only HIEW. This is perfect for the
- intermediate cracker who wants to stretch themselves a little.
-
- Rating
- ------
-
- I wrote a document detailing the ratings but I lost it when my palmtop ran out
- of batteries :( I can't be bothered writing it again, but will give a quick
- guide:
-
- The crackmes are rated from 1-5. 1 is the easiest, 5 the most difficult. They
- can be followed by a letter code which gives further information. Ratings for my
- crackmes so far are:
-
- Paper Tiger - 2-3
- Caveman - 2-3
- Ipoly - 2
- Racy Brick Wall - 1i
- Futility on Display - 1i
-
- [note: the 'i' modifier stands for impossible, it means that the crackme
- requires more computing time than I am willing to apply]
-