EvOlUtIoN's sun_crackme
| Download crackme_sun.zip, 14 kb (password: crackmes.de) Browse contents of crackme_sun.zip This is my second crackme.
Difficulty: 2 - Needs a little brain (or luck) | RatingWaiting for at least 3 votes View profile of EvOlUtIoN » |
Solutions
There are no solutions to this crackme yet. Have you solved it? Please write a tutorial and submit it here!
Discussion and comments
| sd333221 28. Sep 2006 | I already enabled the button, but it seems like there is no comparision with the right serial :D Some crap algo i don't like because of visual basic... Let's see |
|---|---|
| EvOlUtIoN Author 28. Sep 2006 | Yes, there isn't a direct comparison with the correct serial, but it is equally simple. |
| zhengjuyu 04. Oct 2006 | I'm a newbie, I have no idea for patching vb button( i only can enable it at runtime ), could you give me some hints, thanks! |
| EvOlUtIoN Author 04. Oct 2006 | i suggest you to look on other controls in order to enable the button, not only to the button, but other things... |
| mucki 05. Oct 2006 | I used VB-Reformer to enable the button. I set the Check button enabled and the time of the timer to 9999. Then I patched the file at offset 9EC00 to E97BEAFFFF90 (a jump to the real algo, maybe I'm wrong), but now I don't want to go on because the algo is so long... |
| froidiño 22. Feb 2007 | Hello EvOlUtIoN Maybe be wrong, but after analyzing it often, I believe that no solution exists. Can you confirm it? |
| Predator 23. Jun 2007 | Enable the button is very very easy, the difficulty is in the keygen it. because vb make a lot of confusion in the code. |
| Predator 23. Jun 2007 | mucki, why not set timer to 0? ;-) |
| soychino 24. Dec 2007 | sum(username)*&h56 xor BC614E=sum(serial)*&h56 xor cf33ee is this correct? but i dont think there is a solution for the equation |
| narf 24. Dec 2007 | soychine, a bit of elementary math yields: sum(serial) = ((sum(username)*0x56) xor 0xbc614e xor 0xcf33ee)) / 0x56 how's that for a solution? ;) just wiggle the serial a little until it fits. |
| soychino 26. Dec 2007 | sum(serial) = ((sum(username)*0x56) xor 0xbc614e xor 0xcf33ee)) / 0x56 still i don't think there is logically a solution to the equation,can someone help me out?Thx! |
| deurus 16. Dec 2010 | With Vb Reformer enable the button and put the timer to 0. Ok but we have anything to do because there is an even "mousedown" that disable the button. To activate the button first we need to locate the code, there are any ways but the fastest is get the offset with "SmartCheck". SmartCheck says that the mousedown offset is 49EC00. Analyzing the code we view this: Original: ;Push 0 in the pile; 0 = 00 = FALSE 0049EC99 6A FF PUSH 0 0049EC9B . 56 PUSH ESI 0049EC9C . 8B0E MOV ECX,DWORD PTR DS:[ESI] ;[...+8C] refers to the button 0049EC9E . FF91 8C000000 CALL DWORD PTR DS:[ECX+8C] Button cheat: ;Making this change we hoax the button; -1 = FF = TRUE 0049EC99 6A FF PUSH -1 0049EC9B . 56 PUSH ESI 0049EC9C . 8B0E MOV ECX,DWORD PTR DS:[ESI] 0049EC9E . FF91 8C000000 CALL DWORD PTR DS:[ECX+8C] Then only need keygen it. |
| deurus 22. Mar 2012 | Evolution please help us with the algo |
| deurus 22. Mar 2012 | Evolutio please put an example of name/serial |
You may leave your comment, thoughts and discuss this crackme with other reversers here.
Acting childish will not be tolerated.
HTML and such will be left as-is, so don't try.