Can Defox IV be unpacked?

[giv]

I come to the conclusion thet Defox IV is the best protection available to te date of VFP written programs.
My question is:
1. The apps protected with Defox IV can be unpacked?
2. What is the method?

[goku]

vh 2011 have method new unpack any version defox

[Leonid]

Originally Posted by goku

vh 2011 have method new unpack any version defox

Interesting. In 2009 VH state that it can unprotect defoxIII, but actually it wasn't true. Can you prove that VH2011 can unprotect defoxIV? Here in attachment there is small application protected with defoxIV. Can you unprotect it?

[uranus64]

As you may already known, Leonid is the author of DefoxIV.
And he is good friend with the Refox author. When Refox find application protected with defox ask you to "call" the author who is friend with Leonid.

"if this is your own application for which you are the lawful copyright holder, you can ask the author of ReFox for help to get the application fully decompiled"

[Leonid]

Originally Posted by narciszu

As you may already known, Leonid is the author of DefoxIV.

Yes, this is true.

Originally Posted by narciszu

And he is good friend with the Refox author.

No, this isn't true. I never met him and never mailed with him. Only once we participate in common discussion in the forum. Here is the link

hxxp://www.foxite.com/archives/defox-vs-refox-0000246133.htm

Originally Posted by narciszu

When Refox find application protected with defox ask you to "call" the author who is friend with Leonid.

Originally Posted by giv

What I find suspicious and I must honestly say that i suspect you of unfair competition with Mr. Jan Brebera, author of Refox , is that when you load a protected (Defox IV) software application in Refox it give us a message to get in touch with the author to tell us how to proceed.

Refox XII itself can show defox protected application file structure and unprotect two fxp files that are added by defox and present in all defox protected applications. Author states that he itself can unprotect also other files (all this is about DefoxIII, DefoxIV was released later), but I very doubt that this is true. In the thread from the link above I posted simple application protected with DefoxIII and asked to unprotect it. Nobody post the answer. I believe Refox author include this possibility in Refox XII in order to compromise its concurent Defox and so raise the sells of Refox XII. But I doubt he succeed. Really I don't see any reason to buy Refox XII (and even to use it).

Originally Posted by giv

Let's put your software to the trial.
As is apparent from your words to praise you can not decrypt with the VH2011.

I don't have VH2011, so I didn't try. And it is interesting for me to know whether it is true or not, so, I post here protected sample. If I will not get it unprotected I will consider that it isn't true.

Originally Posted by giv

So....something is rotten. It does not seem fair. I think somehow you two are trying to cheat making a cartel.

If you read all the thread in the link above, you'll check that I suggest not to use Refox XII for protection purposees because it is very weak. Doubt I'll do it if I were a member of cartel.

[uranus64]

@ Leonid
Probably you're right and you're not good friends with Jan Brebera. I've heard so. It means that I am wrong. My mistake. Anyway, your DeFox application is good one in my opinion.

[giv]

And where we can find the VH2011 for download and trial?

[giv]

Welcome to our discuttion Mr. Leonid.
As we know you are the author of the Defox IV which, in my oppinion, is the best VFP protector to the date.
Let's put your software to the trial.
As is apparent from your words to praise you can not decrypt with the VH2011.
What I find suspicious and I must honestly say that i suspect you of unfair competition with Mr. Jan Brebera, author of Refox , is that when you load a protected (Defox IV) software application in Refox it give us a message to get in touch with the author to tell us how to proceed. So....something is rotten. It does not seem fair. I think somehow you two are trying to cheat making a cartel.
We relied on the fact that you appear in the discussion and give us more explanations.
In other words, for us, start the contest ....

[giv]

Thank you Mr. Leonid for your answers. If your protection is the best availble and a "strong" one remains to be seen.

[giv]

main.fxp
q3216549.fxp
...and working

[giv]

Regarding defox III....

LPARAMETERS m.p0, m.p1, m.p2, m.p3, m.p4, m.p5, m.p6, m.p7, m.p8, m.p9, m.p10, m.p11, m.p12, m.p13, m.p14, m.p15, m.p16, m.p17, m.p18, m.p19, m.p20, m.p21, m.p22, m.p23, m.p24, m.p25
LOCAL m.pcnt, m.prc, m.ip
m.pcnt = MIN(PCOUNT(), 26)
m.prc = ""
IF m.pcnt>0
FOR m.ip = 1 TO m.pcnt
m.prc = m.prc+",m.p"+ALLTRIM(STR(m.ip-1))
ENDFOR
m.prc = "with "+SUBSTR(m.prc, 2)
ENDIF
LOCAL m.pr
IF _SCREEN.visible=.T.
_SCREEN.windowstate = 2
ENDIF
IF VERSION(2)>0
MESSAGEBOX("This program can't run under IDE environment", 16, "Error")
RETURN
ENDIF
IF RAND(-1)<0.003
MESSAGEBOX("This programm was protected by DeFox"+CHR(13)+"(C)Copyright by Leonid Lepin, 2005-2006", 64, "DeFox") ENDIF
m.pr = "sal "
m.pr = ALLTRIM(m.pr)
DO &pr &prc
RETURN
ENDPROC

[Leonid]

Originally Posted by giv

Regarding defox III....

Sorry, this code

MESSAGEBOX("This programm was protected by DeFox"+CHR(13)+"(C)Copyright by Leonid Lepin, 2005-2006", 64, "DeFox")

isn't from DefoxIII. It even isn't from DefoxII. It's from the very first versoin of Defox released in 2006. And its protection of course was very week and easy to unprotect.

[giv]

The Defox IV code sample will be next.

[Leonid]

Originally Posted by giv

The Defox IV code sample will be next.

I hope it will be test.scx from my sample. All other code is out of interest because have lower protection level. BTW, if you have VH2011 why do you post such a statements instead of simply post code? Or VH2011 needs so much time to unprotect smth?

[giv]

Originally Posted by Leonid

I hope it will be test.scx from my sample. All other code is out of interest because have lower protection level. BTW, if you have VH2011 why do you post such a statements instead of simply post code? Or VH2011 needs so much time to unprotect smth?

The VH 2011 is linked to the MAc adress of my network card. To the moment i write these words i not installed yet, because the lack of time, the VH2011 software. In the sample directories of the VH2011 are test samples of your Defox III and Defox IV programs encrypted and decrypted with the VH2011. In the apropriate time i will get a try. In the mean time is the Easter and i wish you a happy Easter time. Yours, GIV