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Java question

 
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MoolT
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PostPosted: Fri Jun 22, 2007 12:45 pm    Post subject: Java question Reply with quote

can you compile java into EXEcutable file?
if so can anyone share the name of the compiler with me?
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HomerSexual
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PostPosted: Fri Jun 22, 2007 12:52 pm    Post subject: Reply with quote

you can with JCreator

but you need to do a manifest

i could never get the manifest to work

and btw its not .exe its .jar

it links the files together and compiles it using JRE

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MoolT
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PostPosted: Fri Jun 22, 2007 1:17 pm    Post subject: Reply with quote

yea well I can make JAR files. I'm just wondering if there's a way to make a normal EXE one.
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DeltaFlyer
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PostPosted: Fri Jun 22, 2007 1:20 pm    Post subject: Reply with quote

There are none that is really free. You could refer to this page:
http://www.javaworld.com/javaworld/javaqa/2000-06/02-qa-0609-exe.html

Also, why would you want to create an exe?

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MoolT
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PostPosted: Fri Jun 22, 2007 1:30 pm    Post subject: Reply with quote

wanna try joining the "crackme" community and if I can't crack I can make the "crackme" file and see what they did to crack it. It might not be correct but well, it's still fun making and cracking challenges.
BTW, if anyone is willing to teach me the basics or refer me to a cracking guide I'll be very thankful.
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RS
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PostPosted: Fri Jun 22, 2007 2:37 pm    Post subject: Reply with quote

If memory serves, J# compiles into an executable. J Sharp Express is distributed for free (legally too!).
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DeltaFlyer
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PostPosted: Fri Jun 22, 2007 2:46 pm    Post subject: Reply with quote

J# still runs on the MS .Net framework though, not that much different from JVM if the Java code is compiled with JIT.

Also, J#'s implementation of certain methods in classes such as String is different than the implementation in Sun's Java.

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HomerSexual
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PostPosted: Fri Jun 22, 2007 4:44 pm    Post subject: Reply with quote

j# is bulky

Java is less bulky

and java wont compile into a .exe

it has to be run by JRE

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DeltaFlyer
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PostPosted: Fri Jun 22, 2007 4:46 pm    Post subject: Reply with quote

blankrider wrote:
j# is bulky

Java is less bulky

and java wont compile into a .exe

it has to be run by JRE

Sun Java less bulky? I wouldn't go that far.

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HomerSexual
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PostPosted: Fri Jun 22, 2007 6:39 pm    Post subject: Reply with quote

ANYTHING is less bulky than .net

sun java isnt that bad actually o.o

not the fastest

but not the slowest

its a good language

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DeltaFlyer
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PostPosted: Fri Jun 22, 2007 7:43 pm    Post subject: Reply with quote

I code in Java as well as some of the .net languages. From my personal experience, Sun Java is definitely the slowest, especially with any GUI involved. The swing classes are just huge. Java is still my favorite for its reliability though.

Anyways, back on topic.

Although I believe that a good "crack me" should rely on the algorithm rather than the protection from ASM's vagueness, it is true that your program will suffer because of the lack of methods for system interaction and your source code being freely available. If you're good with Java, you should be able to pick up C/++, which do include methods for system interaction, in no time.

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