CrackingFree Talk about Cracking[J2ME] Beginner need help by reserve engeniering

18 Oct 2009, 11:40

Hi i am new a this. I want to crack "d!etorgan!z3r mob!le".
I think keygen is to high for me, yet.
3 HexEditors, DJ Java Decompiler are installed. The classes are extracted and I can see the source, but I think it is obfuscated ?!
Important are class : g.class, am.class or an.class.I have no idea what to change with the Hex editor.Please give me tipps or some help
Thx



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Rating 0 Comments 11
Xilent
0
Xilent 19 Oct 2009, 11:14 #
Does somebody recommend me another board where they can help specific for J2ME.
There is realy nothing (searched with google).
Fantikar
1
Fantikar 20 Oct 2009, 05:43 #
actually.. i dont think there is a board specifically for j2me cuz its too easy to crack.. there are a few of j2me cracking tutorial on the net but only searchable by various keyword combinations... but I myself have already made a tutorial on this really.. its at http://fantikar91.fileave.com/Reversing_J2ME_Applications.rar... on the way doing some research I stumbled a group of j2me tools 4 cracking on the phone.. also I made a tutorial for this too(http://fantikar91.fileave.com/Unofficial_Reversing_on%20The_s40_revealed.rar)..
Fantikar
1
Fantikar 20 Oct 2009, 06:21 #
f it.. this is easy.. its the an.class..
Fantikar
1
Fantikar 20 Oct 2009, 06:25 #
at the an.class with its bytecode view enabled..
if((s = d.getString().toUpperCase()).equals(displayable))
//* 19 38:aload_0
//* 20 39:getfield #31
//* 21 42:invokevirtual #56
//* 22 45:invokevirtual #42
//* 23 48:dup
//* 24 49:astore_3
//* 25 50:aload_2
//* 26 51:invokevirtual #41
//* 27 54:ifeq 89 <
// 29 60:iconst_1
// 30 61:invokevirtual #34
br.d().c(command);
// 31 64:invokestatic #38
// 32 67:aload_1
// 33 68:invokevirtual #33
br.g().b();
// 34 71:invokestatic #39
// 35 74:invokevirtual #36
a.a(this, 1);
// 36 77:aload_0
// 37 78:getfield #28
// 38 81:aload_0
// 39 82:iconst_1
// 40 83:invokeinterface #57
return;
// 41 88:return
}
br.g().a("Information", "Invalid Registration Code for '" + command + "'", null, AlertType.INFO);
// 42 89:invokestatic #39
// 43 92:ldc1 #4
// 44 94:new #18
// 45 97:dup
// 46 98:ldc1 #5
// 47 100:invokespecial #43
// 48 103:aload_1
// 49 104:invokevirtual #44
// 50 107:ldc1 #2
// 51 109:invokevirtual #44
// 52 112:invokevirtual #45
// 53 115:aconst_null
// 54 116:getstatic #32
// 55 119:invokevirtual #35
U CAN CLEARLY SEE THAT IT GOES TO 89.. THERE LIES THE DREADED "Invalid Registration Code" MESSAGE.. DREADED??
Fantikar
1
Fantikar 20 Oct 2009, 06:27 #
LOOK AT CODE 54.. THERE IS A IFEQ 89.. i wonder if we could reverse this...
Xilent
0
Xilent 20 Oct 2009, 07:56 #
Hi thanx for your answer (your last vistit date was long before so i think you aren't active anymore).Yes i downloaded your tutorial before an read it and crack the crackme.It was tooooo easy^^.

The problem is that if I see something as code I can not change because than I must recompile, and it doesnt work.So it must be changed in hex editor(right?).But how can I find the right hex to change and in what to change...i wonder if we could reverse this... So is it possible to crack or what you mean ? Xient from Germany
vanchanthang
0
vanchanthang 20 Oct 2009, 09:39 #
I want to crack Acid pro 6
Xilent
0
Xilent 20 Oct 2009, 10:26 #
Sorry forgot to think ^^ THANK YOU VERY VERY MUCH!
IT IS REGISTRED:)
Fantikar
0
Fantikar 20 Oct 2009, 20:55 #
I wasnt actually.. Bt gud thing i subscribd asatalk email inform..
Fantikar
0
Fantikar 20 Oct 2009, 21:05 #
So how was the tutorial..I really wanna know if it is understandable or nt.. Gv me comments n i ll b cool.. Now im trying to crack dis russian j2me game..Which s quite hard cuz its in russian.. I wonder if u cud help me out..
Fantikar
0
Fantikar 20 Oct 2009, 21:56 #
Im thinking of creating a group dat specialize in reverse engineering j2me.. R u in? Ill be active in reversing on holiday mybe end of this year.. Btw im in exam season.. bt i'll always b online..
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Xilent
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