DVDChapter V1.2

下載頁面： http://www.skycn.com/soft/6680.html
軟體大小： 632 KB
軟體語言：簡體中文
軟體類別：國產軟體 / 共享版 / 影片處理
應用平臺： Win9x/NT/2000/XP
加入時間： 2001-10-06 15:01:05
下載次數： 977
推薦等級： ****
開發商： http://www.boilsoft.com/

【軟體簡介】：DVDChapter 是一個獨立的 DVD 光碟工具，用來抽取DVD 光碟上的章節，並把資料儲存在硬碟上。本軟體已廣泛使用於影片點歌系統中，用於抽取 Karaoke 和 MTV 光碟上歌曲。支援 Microsoft Windows NT / 2000、95/98/Me。經過一年多的發展，DVDChapter 已成為一套成熟、穩定的工具軟體。

【軟體限制】：10次試用。

【作者宣告】：初學Crack，只是感興趣，沒有其它目的。失誤之處敬請諸位大俠賜教！

【破解工具】：TRW2000娃娃修改版、Ollydbg1.09、PEiD、W32Dasm 9.0白金版

―――――――――――――――――――――――――――――――――
【過程】：

呵呵，罈子上有朋友提出這個東東，我半個月前就看了看，找到了核心，卻水平太淺而無法求逆。
幸得 afanty 老師的指教，終於完成了這篇筆記。感謝 afanty 老師！

如果有錯誤當是我分析的原因。

DVDChapter.exe 無殼。Visual C++ 6.0 編寫。

註冊碼格式為X-Y-Z 共3部分。簡單假設X=1357 Y=2468 Z=9012
試煉碼：1357-2468-9012
―――――――――――――――――――――――――――――――――
:004040D0 6AFF push FFFFFFFF
:004040D2 68F0C14100 push 0041C1F0
:004040D7 64A100000000 mov eax, dword ptr fs:[00000000]
:004040DD 50 push eax
:004040DE 64892500000000 mov dword ptr fs:[00000000], esp
:004040E5 83EC08 sub esp, 00000008
:004040E8 56 push esi
:004040E9 8BF1 mov esi, ecx
:004040EB 6A01 push 00000001
:004040ED E81A1F0100 call 0041600C
:004040F2 A1E4484200 mov eax, dword ptr [004248E4]
:004040F7 89442408 mov dword ptr [esp+08], eax
:004040FB C744241400000000 mov [esp+14], 00000000
:00404103 89442404 mov dword ptr [esp+04], eax

* Possible Reference to String Resource ID=00106: "o鯊?
|
:00404107 6A6A push 0000006A
:00404109 8D4C240C lea ecx, dword ptr [esp+0C]
:0040410D C644241801 mov [esp+18], 01
:00404112 E828450100 call 0041863F
:00404117 8B465C mov eax, dword ptr [esi+5C]
====>EAX=1357-2468-9012 試煉碼

:0040411A 50 push eax
:0040411B E860FBFFFF call 00403C80
====>關鍵CALL！進入！

:00404120 83C404 add esp, 00000004
:00404123 85C0 test eax, eax
:00404125 7436 je 0040415D
====>跳則OVER！

:00404127 8B465C mov eax, dword ptr [esi+5C]
:0040412A 50 push eax
:0040412B E820FCFFFF call 00403D50
:00404130 83C404 add esp, 00000004
:00404133 8D4C2404 lea ecx, dword ptr [esp+04]

* Possible Reference to String Resource ID=00104: "?
"?(腹o?
|
:00404137 6A68 push 00000068
:00404139 E801450100 call 0041863F
:0040413E 8B442408 mov eax, dword ptr [esp+08]
:00404142 8B4C2404 mov ecx, dword ptr [esp+04]
:00404146 6A00 push 00000000
:00404148 50 push eax
:00404149 51 push ecx
:0040414A 8BCE mov ecx, esi
:0040414C E85F170100 call 004158B0
====>呵呵，勝利女神！

:00404151 8B16 mov edx, dword ptr [esi]
:00404153 8BCE mov ecx, esi
:00404155 FF92C4000000 call dword ptr [edx+000000C4]
:0040415B EB1E jmp 0040417B

* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:00404125(C)
|

* Possible Reference to String Resource ID=00105: "???
?腹oT?
|
:0040415D 6A69 push 00000069
:0040415F 8D4C2408 lea ecx, dword ptr [esp+08]
:00404163 E8D7440100 call 0041863F
:00404168 8B442408 mov eax, dword ptr [esp+08]
:0040416C 8B4C2404 mov ecx, dword ptr [esp+04]
:00404170 6A10 push 00000010
:00404172 50 push eax
:00404173 51 push ecx
:00404174 8BCE mov ecx, esi
:00404176 E835170100 call 004158B0
====>BAD BOY！

* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:0040415B(U)
|
:0040417B 8D4C2404 lea ecx, dword ptr [esp+04]
:0040417F C644241400 mov [esp+14], 00
:00404184 E852310100 call 004172DB
:00404189 8D4C2408 lea ecx, dword ptr [esp+08]
:0040418D C7442414FFFFFFFF mov [esp+14], FFFFFFFF
:00404195 E841310100 call 004172DB
:0040419A 8B4C240C mov ecx, dword ptr [esp+0C]
:0040419E 5E pop esi
:0040419F 64890D00000000 mov dword ptr fs:[00000000], ecx
:004041A6 83C414 add esp, 00000014
:004041A9 C3 ret

―――――――――――――――――――――――――――――――――
進入關鍵CALL：40411B call 00403C80

* Referenced by a CALL at Addresses:
|:00401F4E , :0040411B
|
:00403C80 53 push ebx
:00403C81 55 push ebp
:00403C82 56 push esi
:00403C83 8B742410 mov esi, dword ptr [esp+10]
====>ESI=1357-2468-9012 試煉碼

:00403C87 33ED xor ebp, ebp
:00403C89 57 push edi
:00403C8A 85F6 test esi, esi
:00403C8C 0F84B0000000 je 00403D42
:00403C92 803E00 cmp byte ptr [esi], 00
:00403C95 0F84A7000000 je 00403D42
:00403C9B 8BFE mov edi, esi
:00403C9D 83C9FF or ecx, FFFFFFFF
:00403CA0 33C0 xor eax, eax
:00403CA2 F2 repnz
:00403CA3 AE scasb
:00403CA4 F7D1 not ecx
:00403CA6 51 push ecx
====>取試煉碼位數 ECX=F

:00403CA7 6A40 push 00000040

* Reference To: KERNEL32.LocalAlloc, Ord:01C8h
|
:00403CA9 FF1550D24100 Call dword ptr [0041D250]
:00403CAF 8BD8 mov ebx, eax
:00403CB1 85DB test ebx, ebx
:00403CB3 0F8489000000 je 00403D42
:00403CB9 8BFE mov edi, esi
:00403CBB 83C9FF or ecx, FFFFFFFF
:00403CBE 33C0 xor eax, eax
:00403CC0 6A2D push 0000002D
:00403CC2 F2 repnz
:00403CC3 AE scasb
:00403CC4 F7D1 not ecx
:00403CC6 2BF9 sub edi, ecx
:00403CC8 53 push ebx
:00403CC9 8BC1 mov eax, ecx
:00403CCB 8BF7 mov esi, edi
:00403CCD 8BFB mov edi, ebx
:00403CCF C1E902 shr ecx, 02
:00403CD2 F3 repz
:00403CD3 A5 movsd
:00403CD4 8BC8 mov ecx, eax
:00403CD6 83E103 and ecx, 00000003
:00403CD9 F3 repz
:00403CDA A4 movsb
:00403CDB 8BF3 mov esi, ebx
====>ESI=1357-2468-9012 試煉碼

:00403CDD E80E2E0000 call 00406AF0
====>檢測CALL！看看註冊碼是否是X-Y格式

:00403CE2 83C408 add esp, 00000008
:00403CE5 85C0 test eax, eax
:00403CE7 7452 je 00403D3B
====>跳則OVER！

:00403CE9 8B7C2414 mov edi, dword ptr [esp+14]

* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:00403D11(C)
|
:00403CED 45 inc ebp
====>EBP依次增1

:00403CEE C60000 mov byte ptr [eax], 00
:00403CF1 8BCD mov ecx, ebp
:00403CF3 40 inc eax
:00403CF4 49 dec ecx
:00403CF5 7409 je 00403D00
:00403CF7 49 dec ecx
:00403CF8 7508 jne 00403D02
:00403CFA 89742414 mov dword ptr [esp+14], esi
:00403CFE EB02 jmp 00403D02

* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:00403CF5(C)
|
:00403D00 8BFE mov edi, esi

* Referenced by a (U)nconditional or (C)onditional Jump at Addresses:
|:00403CF8(C), :00403CFE(U)
|
:00403D02 6A2D push 0000002D
:00403D04 50 push eax
:00403D05 8BF0 mov esi, eax
====>ESI=2468-9012

:00403D07 E8E42D0000 call 00406AF0
====>檢測CALL！看看註冊碼是否是Y-Z格式
====>即：這2個檢測表明註冊碼格式為X-Y-Z

:00403D0C 83C408 add esp, 00000008
:00403D0F 85C0 test eax, eax
:00403D11 75DA jne 00403CED
:00403D13 83FD02 cmp ebp, 00000002
====>EBP不等於2則跳！

:00403D16 7523 jne 00403D3B
====>跳則OVER！

:00403D18 85F6 test esi, esi
:00403D1A 741F je 00403D3B
:00403D1C 8B4C2414 mov ecx, dword ptr [esp+14]
:00403D20 51 push ecx
====>ECX=2468

:00403D21 56 push esi
====>ESI=9012

:00403D22 57 push edi
====>EDI=1357

:00403D23 E808FFFFFF call 00403C30
====>核心CALL！進入！

:00403D28 83C40C add esp, 0000000C
:00403D2B 8BF0 mov esi, eax
:00403D2D 53 push ebx

* Reference To: KERNEL32.LocalFree, Ord:01CCh
|
:00403D2E FF154CD24100 Call dword ptr [0041D24C]
:00403D34 8BC6 mov eax, esi
:00403D36 5F pop edi
:00403D37 5E pop esi
:00403D38 5D pop ebp
:00403D39 5B pop ebx
:00403D3A C3 ret

* Referenced by a (U)nconditional or (C)onditional Jump at Addresses:
|:00403CE7(C), :00403D16(C), :00403D1A(C)
|
:00403D3B 53 push ebx

* Reference To: KERNEL32.LocalFree, Ord:01CCh
|
:00403D3C FF154CD24100 Call dword ptr [0041D24C]

* Referenced by a (U)nconditional or (C)onditional Jump at Addresses:
|:00403C8C(C), :00403C95(C), :00403CB3(C)
|
:00403D42 5F pop edi
:00403D43 5E pop esi
:00403D44 5D pop ebp
:00403D45 33C0 xor eax, eax
====>清0則OVER！爆破點①！

:00403D47 5B pop ebx
:00403D48 C3 ret

―――――――――――――――――――――――――――――――――
進入核心CALL：403D23 call 00403C30

* Referenced by a CALL at Address:
|:00403D23
|
:00403C30 8B442404 mov eax, dword ptr [esp+04]
====>EAX=1357

:00403C34 53 push ebx
:00403C35 85C0 test eax, eax
:00403C37 57 push edi
:00403C38 7440 je 00403C7A
:00403C3A 8B7C2410 mov edi, dword ptr [esp+10]
====>EDI=9012

:00403C3E 85FF test edi, edi
:00403C40 7438 je 00403C7A
:00403C42 8B5C2414 mov ebx, dword ptr [esp+14]
====>EBX=2468

:00403C46 85DB test ebx, ebx
:00403C48 7430 je 00403C7A
:00403C4A 56 push esi
:00403C4B 50 push eax
:00403C4C E83FFFFFFF call 00403B90
一、 ====>對1357進行運算得出C62B

:00403C51 57 push edi
:00403C52 8BF0 mov esi, eax
====>ESI=EAX=C62B

:00403C54 E837FFFFFF call 00403B90
二、 ====>對9012進行運算得出66866

:00403C59 53 push ebx
:00403C5A 8BF8 mov edi, eax
====>EDI=EAX=66866

:00403C5C E82FFFFFFF call 00403B90
三、 ====>對2468進行運算得出181A0

:00403C61 57 push edi
:00403C62 56 push esi
:00403C63 8BD8 mov ebx, eax
====>EBX=EAX=181A0

:00403C65 E886FFFFFF call 00403BF0
四、 ====>運算CALL!進入!

:00403C6A 83C414 add esp, 00000014
:00403C6D 33C9 xor ecx, ecx
:00403C6F 3BC3 cmp eax, ebx
====>比較了！如果這2者相等則OK！爆破點②！
====>EAX=498545E
====>EBX=181A0

:00403C71 0F94C1 sete cl
:00403C74 5E pop esi
:00403C75 5F pop edi
:00403C76 8BC1 mov eax, ecx
:00403C78 5B pop ebx
:00403C79 C3 ret

―――――――――――――――――――――――――――――――――
進入運算一、二、三： call 00403B90

* Referenced by a CALL at Addresses:
|:00403C4C , :00403C54 , :00403C5C
|
:00403B90 8B542404 mov edx, dword ptr [esp+04]
:00403B94 33C0 xor eax, eax
:00403B96 85D2 test edx, edx
:00403B98 744F je 00403BE9
:00403B9A 8A0A mov cl, byte ptr [edx]
一、 ====>CL=依次取1357字元的HEX值
―――――――――――――――――――――――――
二、 ====>CL=依次取9012字元的HEX值
―――――――――――――――――――――――――
三、 ====>CL=依次取2468字元的HEX值

:00403B9C 84C9 test cl, cl
:00403B9E 744C je 00403BEC

* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:00403BE6(C)
|
:00403BA0 80F930 cmp cl, 30
:00403BA3 7C11 jl 00403BB6
:00403BA5 80F939 cmp cl, 39
:00403BA8 7F0C jg 00403BB6
:00403BAA 0FBEC9 movsx ecx, cl
:00403BAD 8D04C0 lea eax, dword ptr [eax+8*eax]
一、 1、 ====>EAX=00 * 9=0
2、 ====>EAX=01 * 9=9
3、 ====>EAX=27 * 9=15F
4、 ====>EAX=581 * 9=3189

―――――――――――――――――――――――――
二、 1、 ====>EAX=00 * 9=0
2、 ====>EAX=09 * 9=51
3、 ====>EAX=144 * 9=B64
4、 ====>EAX=2D91 * 9=19A19

―――――――――――――――――――――――――
三、 1、 ====>EAX=00 * 9=0
2、 ====>EAX=02 * 9=12
3、 ====>EAX=4C * 9=2AC
4、 ====>EAX=AB6 * 9=6066

:00403BB0 8D4481D0 lea eax, dword ptr [ecx+4*eax-30]
一、 1、 ====>EAX=31 + 4*0 -30=1
2、 ====>EAX=33 + 4*9 -30=27
3、 ====>EAX=35 + 4*15F -30=581
4、 ====>EAX=37 + 4*3189 -30=C62B

―――――――――――――――――――――――――
二、 1、 ====>EAX=39 + 4*0 -30=9
2、 ====>EAX=30 + 4*51 -30=144
3、 ====>EAX=31 + 4*B64 -30=2D91
4、 ====>EAX=32 + 4*19A19 -30=66866

―――――――――――――――――――――――――
三、 1、 ====>EAX=32 + 4*0 -30=2
2、 ====>EAX=34 + 4*12 -30=4C
3、 ====>EAX=36 + 4*2AC -30=AB6
4、 ====>EAX=38 + 4*6066 -30=181A0

:00403BB4 EB2A jmp 00403BE0

====>如果是字母的話則進行下面的運算！
* Referenced by a (U)nconditional or (C)onditional Jump at Addresses:
|:00403BA3(C), :00403BA8(C)
|
:00403BB6 80F941 cmp cl, 41
:00403BB9 7C11 jl 00403BCC
:00403BBB 80F95A cmp cl, 5A
:00403BBE 7F0C jg 00403BCC
:00403BC0 0FBEC9 movsx ecx, cl
:00403BC3 8D04C0 lea eax, dword ptr [eax+8*eax]
:00403BC6 8D4481C9 lea eax, dword ptr [ecx+4*eax-37]
:00403BCA EB14 jmp 00403BE0

* Referenced by a (U)nconditional or (C)onditional Jump at Addresses:
|:00403BB9(C), :00403BBE(C)
|
:00403BCC 80F961 cmp cl, 61
:00403BCF 7C18 jl 00403BE9
:00403BD1 80F97A cmp cl, 7A
:00403BD4 7F13 jg 00403BE9
:00403BD6 0FBEC9 movsx ecx, cl
:00403BD9 8D04C0 lea eax, dword ptr [eax+8*eax]
:00403BDC 8D4481A9 lea eax, dword ptr [ecx+4*eax-57]

* Referenced by a (U)nconditional or (C)onditional Jump at Addresses:
|:00403BB4(U), :00403BCA(U)
|
:00403BE0 8A4A01 mov cl, byte ptr [edx+01]
:00403BE3 42 inc edx
:00403BE4 84C9 test cl, cl
:00403BE6 75B8 jne 00403BA0
====>繼續迴圈？！

:00403BE8 C3 ret

根據 afanty 大哥的指教，這段程式碼其實是將1357、2468、9012看成36進位制數，然後轉換成16進位制數的結果。
X=1357（36進位制）=C62B（H）；Y=2468（36）=181A0（H）；Z=9012（36）=66866（H）

―――――――――――――――――――――――――――――――――
進入運算CALL四：00403C65 call 00403BF0

* Referenced by a CALL at Address:
|:00403C65
|
:00403BF0 8B4C2404 mov ecx, dword ptr [esp+04]
====>ECX=[esp+04]=C62B

:00403BF4 56 push esi
:00403BF5 8BC1 mov eax, ecx
====>EAX=ECX=C62B

:00403BF7 33D2 xor edx, edx
:00403BF9 BE40B60000 mov esi, 0000B640
====>ESI=B640

:00403BFE F7F6 div esi
====>EDX=C62B % B640=FEB

:00403C00 8D0492 lea eax, dword ptr [edx+4*edx]
====>EAX=FEB * 5=4F97

:00403C03 8D04C2 lea eax, dword ptr [edx+8*eax]
====>EAX=FEB + 8*4F97=28CA3

:00403C06 8D04C2 lea eax, dword ptr [edx+8*eax]
====>EAX=FEB + 8*28CA3=147503

:00403C09 8D3440 lea esi, dword ptr [eax+2*eax]
====>ESI=147503 * 3=3D5F09

:00403C0C B88303E659 mov eax, 59E60383
====>EAX=59E60383

:00403C11 F7E1 mul ecx
====>59E60383 * C62B=45970059E901
====>EAX=59E60383 * C62B=0059E901
====>EDX=4597 進位入 EDX

:00403C13 8B44240C mov eax, dword ptr [esp+0C]
====>EAX=[esp+0C]=66866

:00403C17 C1EA0E shr edx, 0E
====>EDX=4597 SHR 0E=00000001

:00403C1A 8D0CC500000000 lea ecx, dword ptr [8*eax+00000000]
====>ECX=8 * 66866=334330

:00403C21 03F2 add esi, edx
====>ESI=3D5F09 + 1=3D5F0A

:00403C23 2BC8 sub ecx, eax
====>ECX=334330 - 66866=002CDACA

:00403C25 8D0488 lea eax, dword ptr [eax+4*ecx]
====>EAX=66866 + 4 * 2CDACA=00B9D38E

:00403C28 8D1440 lea edx, dword ptr [eax+2*eax]
====>EDX=B9D38E * 3=22D7AAA

:00403C2B 8D0456 lea eax, dword ptr [esi+2*edx]
====>EAX=3D5F0A + 2 * 22D7AAA=498545E

:00403C2E 5E pop esi
:00403C2F C3 ret

根據 afanty 大哥的指教，這段程式碼可以表示為：(X%0xb640)*987+(X*0x59E60383)>>46+Z*174
注：987、46、174是10進位制值。

―――――――――――――――――――――――――――――――――
【算法總結】：

1、註冊碼格式為X-Y-Z 三個部分。每個部分必須是數字或字母。

2、分別把註冊碼的3組字元看成36進位制數，求出其16進位制值。
X=1357（36進位制）=C62B（H）；Y=2468（36）=181A0（H）；Z=9012（36）=66866（H）

3、對X和Z的16進位制值進行運算得出498545E
(0xC62B % 0xb640) * 987 + (0xC62B * 0x59E60383) >> 46 + 0x66866 * 174=498545E
注：987、46、174是10進位制值。

4、用上面得出的 498545E 和 Y 的16進位制值進行比較，相等則OK！

5、所以我的Y應等於498545E（H）的36進位制值19WCIM

呵呵，當然你也可以假設X=1 Y=2 Z=3，這樣會方便點。^O^^O^^O^^O^

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【完美爆破】：

1、00403D45 33C0 xor eax, eax
改為： B001 mov al, 01

2、00403C6F 3BC3 cmp eax, ebx
改為： 3BC0 cmp eax, eax

這樣就可以任意輸入註冊碼了。^O^^O^^O^^O^

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【註冊資訊儲存】：

REGEDIT4

[HKEY_LOCAL_MACHINE\Software\BoilSoft\DvdChapter\SN]
"sn"="1357-19WCIM-9012"

―――――――――――――――――――――――――――――――――
【整理】：

一組可用的註冊碼：1357-19WCIM-9012

―――――――――――――――――――――――――――――――――

, _/
/| _.-~/ \_ , 青春都一餉
( /~ / \~-._ |\
`\\ _/ \ ~\ ) 忍把浮名
_-~~~-.) )__/;;,. \_ //'
/'_,\ --~ \ ~~~- ,;;\___( (.-~~~-. 換了破解輕狂
`~ _( ,_..--\ ( ,;'' / ~-- /._`\
/~~//' /' `~\ ) /--.._, )_ `~
" `~" " `" /~'`\ `\\~~\
" " "~' ""

Cracked By ―― afanty fly

2003-05-01 16:30

VC序號產生器原始碼部分

――作者：afanty

說明：由於我沒有把判斷註冊碼格式的程式碼部分告訴afanty大哥，因此afanty大哥限制了輸入的1、3部分為4位字元。但是也足夠用了。^-^

#include "stdafx.h"
#include "test01.h"
#include "test01Dlg.h"

CTest01Dlg::CTest01Dlg(CWnd* pParent /*=NULL*/)
: CDialog(CTest01Dlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CTest01Dlg)
m_code1 = _T("");
m_code2 = _T("");
m_code3 = _T("");
//}}AFX_DATA_INIT
}

void CTest01Dlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CTest01Dlg)
DDX_Control(pDX, IDC_EDIT_3, m_edit3);
DDX_Control(pDX, IDC_EDIT_2, m_edit2);
DDX_Control(pDX, IDC_EDIT_1, m_edit1);
DDX_Text(pDX, IDC_EDIT_1, m_code1);
DDX_Text(pDX, IDC_EDIT_2, m_code2);
DDX_Text(pDX, IDC_EDIT_3, m_code3);
//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTest01Dlg, CDialog)
//{{AFX_MSG_MAP(CTest01Dlg)
ON_BN_CLICKED(IDC_BUTTON, OnButton)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

BOOL CTest01Dlg::OnInitDialog()
{
CDialog::OnInitDialog();
m_edit1.SetLimitText(4);
m_edit3.SetLimitText(4);
m_edit2.SetReadOnly();
return TRUE;
}

void CTest01Dlg::OnButton()
{
UpdateData(TRUE);
int i,num;
unsigned long data1=0;
unsigned long data2=0;
unsigned long data3=0;
for(i=0;i<m_code1.GetLength();i++)
{
num=m_code1[i];
if((num>='0')&&(num<='9'))num=num-0x30;
else if((num>='A')&&(num<='Z'))num=num-0x37;
else if((num>='a')&&(num<='z'))num=num-0x57;
else return;
data1=data1*36+num;
}
for(i=0;i<m_code3.GetLength();i++)
{
num=m_code3[i];
if((num>='0')&&(num<='9'))num=num-0x30;
else if((num>='A')&&(num<='Z'))num=num-0x37;
else if((num>='a')&&(num<='z'))num=num-0x57;
else return;
data3=data3*36+num;
}
__int64 tmp=0x59E60383;
tmp=tmp*data1;
tmp=tmp>>46;
data2=(data1%0xB640)*987+(unsigned long)tmp+(data3*174);
char ch;
m_code2="";
while(data2>0)
{
num=data2%36;
if((num>=0)&&(num<=9))num=num+0x30;
else num=num+0x37;
ch=num;
m_code2.Insert(0,ch);
data2=data2/36;
}
UpdateData(FALSE);
}

DVDChapter V1.2

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