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opcode0x90 Cheater
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Joined: 05 Aug 2006 Posts: 27
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Posted: Tue Mar 06, 2007 10:01 am Post subject: [crackme] Opcode0x90's Challege |
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My first crackme. You are allowed to patch it. If you done so, submit a copy of patched crackme as proof.
Have phun.
Note: You have to key in the code in one pass. If you backspace it will considered as wrong. This was a bug, but I am too lazy to fix it. Anyway it wont mess up with the final outcome.
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DeletedUser14087 I post too much
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Joined: 21 Jun 2006 Posts: 3069
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Posted: Tue Mar 06, 2007 10:11 am Post subject: |
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lol,lets give it a try =]
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nix Grandmaster Cheater
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Joined: 30 Oct 2006 Posts: 954 Location: Singapore
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Posted: Tue Mar 06, 2007 10:12 am Post subject: |
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casper the unfriendly ghost giving a try ?
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SunBeam I post too much
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Joined: 25 Feb 2005 Posts: 4023 Location: Romania
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Posted: Tue Mar 06, 2007 10:45 am Post subject: |
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Themida.
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appalsap Moderator
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Joined: 27 Apr 2006 Posts: 6753 Location: Pakistan
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Posted: Tue Mar 06, 2007 10:48 am Post subject: |
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And once a crackme is packed it loses its crackme title and becomes an unpackme.
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Uligor Grandmaster Cheater
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Joined: 21 Jan 2006 Posts: 956
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Posted: Tue Mar 06, 2007 11:09 am Post subject: |
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Done.
EDIT: You might need to refresh if you don't see anything.
Nice encryption keys btw. ;x (The allocated memory ones, not the looping overlapping XOR >=()
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compactwater I post too much
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Joined: 02 Aug 2006 Posts: 3923
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Posted: Tue Mar 06, 2007 11:23 am Post subject: |
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Dang, didn't even get as chance....
EDIT:
Grammar plz?
"You have Enter the code wrong"
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SunBeam I post too much
Reputation: 65
Joined: 25 Feb 2005 Posts: 4023 Location: Romania
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Posted: Tue Mar 06, 2007 11:41 am Post subject: |
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Good job, Uli I'm still battling its unpacking, rather than reversing in-code
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ottoshafer Cheater
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Joined: 22 Oct 2006 Posts: 47
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Posted: Tue Mar 06, 2007 12:32 pm Post subject: |
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what do you guys use to look at the exe file? Sorry for asking such a stupid question, but i want to learn and knowing what tools to use helps alot :S.
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SunBeam I post too much
Reputation: 65
Joined: 25 Feb 2005 Posts: 4023 Location: Romania
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Posted: Tue Mar 06, 2007 12:53 pm Post subject: |
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@Opcode0x90: Me and Uligor are arguing on whether you used any protection on the file. To me it looked like Themida, based on file structure and allocations :S Ploks, tell us...
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opcode0x90 Cheater
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Joined: 05 Aug 2006 Posts: 27
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Posted: Tue Mar 06, 2007 9:30 pm Post subject: |
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@Uligor: Obvious eh? Protection is nothing without enforcement
@appalsap: Its not packed. Not in any sense of encryption or compression.
@Sunbeam: I "borrowed" that trick from Themida. But I didnt protect it using Themida, if thats what you meant.
Anyone willing to reverse the eval function to get the code?
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Update 04/09/2007:
Full solution by alex_ls, finally.
Ignore the false alarm by your AV.
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