DiS[IP]'s creakme_001
| Download Serialme.zip, 2 kb (password: crackmes.de) Browse contents of Serialme.zip This is my first CrackMe. Is very simple, so you should crack it fast.
Difficulty: 1 - Very easy, for newbies | Send a message to DiS[IP] » View profile of DiS[IP] » |
Solutions
Solution by coffeemike, published 06. sep, 2005; download (4 kb), password: crackmes.de or browse.
coffeemike has rated this crackme as quite nice.
Solution by D4ph1, published 06. sep, 2005; download (37 kb), password: crackmes.de or browse.
D4ph1 has not rated this crackme yet.
Solution by Ox87k, published 06. sep, 2005; download (49 kb), password: crackmes.de or browse.
Ox87k has not rated this crackme yet.
Discussion and comments
| Ox87k 04. Sep 2005 | i found a bug... i think.. if i put name: zZz999 serial: zaZbzc9d9e9f the creakme don't get this serial but " aZbzc9d9e9f" without the first char.... is this a bug?? |
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| Ox87k 04. Sep 2005 | mmm sorry the creakme get this serial " aZbc9d9e9" so i think u declare a buffer for serial long only 10 byte... :| |
| code_inside 04. Sep 2005 | The CrackMe first gets the serial in a buffer of size 256, then it gets the name also in a buffer with size 256, but the name buffer is 6 bytes before the serial buffer and so the name will override the serial (If it's longer then 5 characters (Including terminating NULL)). DiS[IP] should recode the CrackMe :) |
| BieX 04. Sep 2005 | well, yeah.. in other words the name is an array of 0 to 4 ---> ADDRESS:004010fe Validate() { InputName[4] = ''; Serial = ''; RealSerial = ''; i = 0; do { if(InputName[i] == "Z") { InputName[i] = InputName[i] - 1; } if(InputName[i] == "z") { InputName[i] = InputName[i] - 1; } if(InputName[i] == "9") { InputName[i] = InputName[i] - 1; } // the bug: RealSerial[i] = *(I * 2 + 0x40301a); -- inputname is has a max char array of 4 RealSerial[i] = InputName[i] + 1; RealSerial[i+1] = InputName[i+1]+ 0x61 + I; if(Serial[i]+Serial[i+1] != RealSerial[i]+RealSerial[i+1]) { goto @BadKey; } I++; } while(I != length(RealSerial)); if(Serial == RealSerial) { return MessageBoxA(00403000, "Register complite!!!", ".:: DiS[IP] Programer ::.", 0); } @BadKey: return MessageBoxA(00403000, "Name or Password is BAD!!", ".:: DiS[IP] Programer ::.", 0); } |
| Ox87k 04. Sep 2005 | yeah... btw i sumbitted my keygen when i write my first comment here. I know this "bug". I don't include the max char limit on name. (so i hope my solution is correct!) |
| tHOBAS 04. Sep 2005 | the only bug that i finde is that just accepte 5 characters whith max y 3 charracter with minimum Sorry my english is very bad |
| setty 06. Sep 2005 | name: setty pass : tafbucudze i craked it in 1.5 min. then if put nop on 40113d it will acept any pass |
| coffeemike 06. Sep 2005 | Nice crackme for beginners. Solution (really a walkthrough) submitted. |
| BieX 06. Sep 2005 | its very easy to see how the code is generated by looking at a Name/Serial.. eg. name: 0000 serial: 1a1b1c1d |
| D4ph1 06. Sep 2005 | The program can accept as much characters as we want but more than 3! Well i submit my solution with the key generator who accept until 30 chars...hope its right |
| neverdas 20. Sep 2005 | neverdas 05.09.20 |
| deibiz_xxl 20. Sep 2005 | D4ph1, have you tested your keygen?? I also think that there is a bug, because I have written a crackme that works for every string with a maximum length of 5. |
| deibiz_xxl 20. Sep 2005 | I have had an idea. Maybe DiS[IP] have coded it thinking that if the name is more than 5 chars long, you have to take some chars out at the beginning of the pass. For example, if your name is 7 chars long, you have to code your serial in the normal way, but then you have to take out 7-2 chars out at the beggining of the string. Somebody understand me? Maybe this is correct? |
| deibiz_xxl 20. Sep 2005 | I have commited an error, I want to say 7-5, not 7-2, you know? |
| deibiz_xxl 20. Sep 2005 | I have tried to code something, but I can't make it work. |
| csin 24. Sep 2005 | KeyGen: http://www.csin.host.sk/DiS[IP]'s creakme_001 KeyGen.exe |
| D4ph1 24. Sep 2005 | deibiz_xxl as CodeInside and Ox87k said before, the name can't be longer than 5 letters. My key generator takes more than 5 letters in the name and of course it doesn't generate a valid serial. For 3 to 5 letters though it works just fine. The bug in my program is that i've forgotten a '=' and soon i will update it. csin's keygenerator works good! |
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