ksc91u's GiveMeMoney
| Download GiveMeMoney.zip, 544 kb (password: crackmes.de) Browse contents of GiveMeMoney.zip Use ECC private key encryption.
Difficulty: 6 - Hard, for very professionals only | RatingVotes: 3 View profile of ksc91u » |
Solutions
Solution by andrewl.us, published 20. apr, 2009; download (92 kb), password: crackmes.de or browse.
andrewl.us has rated this crackme as quite nice.
Discussion and comments
| cyclops Moderator 11. Mar 2009 | No Generator(Base Point)? Will try after my vacation ;) |
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| ksc91u Author 11. Mar 2009 | No base point in keyval. You could try to patch keyval, decrypt dll.enc whatever you like. Though a keygen, or telling me that it is difficult to have one, would be nice. |
| ksc91u Author 30. Mar 2009 | I found this pretty stupid. PB=pv*G You can find a random point act as G', and generate a PB'. Such that r*PB' = pv * r * G' Send r*G', encrypt with r*PB'. Still can be decrypted with pv. XD |
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