br0ken's CrackMe 4
| Download Cm4.zip, 6 kb (password: crackmes.de) Browse contents of Cm4.zip To do:
Difficulty: 1 - Very easy, for newbies | RatingWaiting for at least 3 votes View profile of br0ken » |
Solutions
Solution by mjones, published 26. jul, 2008; download (136 kb), password: crackmes.de or browse.
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Solution by n1trob3nzene, published 02. jul, 2008; download (67 kb), password: crackmes.de or browse.
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Solution by Haykuro, published 29. may, 2008; download (1 kb), password: crackmes.de or browse.
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The submission of solutions is closed.
Discussion and comments
| br0ken Author 25. May 2008 | Gloom, well, I may be wrong. But I thought it would be easier if a bruter did the job. Afterall, it's a lvl 1 cme. It's supposed to be very simple :) Anyway, I had to remove your comment, (you posted pwd, sorry!) Also, please excuse my lack of professionalism, what I do in real life is totally different from what I do here. :) |
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| neo_40 25. May 2008 | just open ollydbg and set a new origin that's how i do it the easy way...... sorry about breaking the rules!!!!!!!!!! |
| Haykuro 25. May 2008 | br0ken: i posted a solution, without a bruteforcer. I think this is really a 2 sided crackme. You CAN code a bruteforcer for it, or you can just reverse the algo (and reversing is always fun :) You'r not 100% wrong when asking for a bruteforcer, but no point in limiting to 1 solution. neo_40: It may be good to learn by patching first, then later on advancing into breaking down the code before you. But running around shouting at everyone how easy it is to patch is rather frowned upon. Just giving you some advice ;) keep on cracking! |
| Laurance_1111 26. May 2008 | What is a bruteforcer? |
| DigitalAcid 26. May 2008 | A bruteforcer is a program that tries all possible combinations in the hope of finding 1 or more valid serials/keys/whatever. |
| Laurance_1111 27. May 2008 | THX. So, a keygen is a bruteforcer? |
| br0ken Author 27. May 2008 | Keygen (short for key generator) is a small program that generates valid serial(s) for a piece of software. http://en.wikipedia.org/wiki/Keygen Bruter (short for brute-forcer) tries all possible combinations until one or more valid serial is found. This could take a few milliseconds, a few seconds, or even years depending on the algorithm used. |
| gmaster1440 08. Jul 2008 | Hey guys, this is actually the very first crackme, or anything on the matter of reverse engineering, i have successfully accomplished, kind of. I wasn't able to create a keygen or bruteforcer; rather, i have cracked it so no matter what you type (besides the actual key of course :P) it will accept it. |
| Exorcist1 11. Mar 2015 | Thanks for good crackme)! There are at least two ways to solve it. 1) Write a brueforcer 2) Just XORED each byte of 4D11628EBE1D constant with the given bytes) |
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