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[转帖]申请加入DFCG NO.1－Replay Video Suite 10.2注册算法分析
发表于: 2005-10-10 21:21 8673

[转帖]申请加入DFCG NO.1－Replay Video Suite 10.2注册算法分析

winndy 活跃值
17
2005-10-10 21:21
8673

Replay Video Suite 10.2注册算法分析
【破解作者】 winndy[FCG][PYG]
【作者邮箱】 CNwinndy@hotmail.com
【使用工具】 OllyDbg v1.10 fly修改版
【破解平台】 Winxp
【软件名称】 Replay Video Suite 10.2
【官方网址】 http://www.applian.com/wmr/index.php?src=all-streaming-media.com
【编写语言】 Microsoft VC 5.00 and 6.00
【软件介绍】 There's no easier way to record Online Videos than with the Replay Video Suite, featuring WM Recorder (for

Windows Media?), RM Recorder (for Real?) and WM VCR.
用PPlive看网络电视时，突然想到有没有工具可以把电视录下来呢？google找到此软件。
【破解声明】 For Study ,For Fun
【保护方式】序列号
【破解过程】
无壳，安装目录下面有个Registration.exe，分析它没错了。
OD载入，搜索字符串参考，很容易找到突破口。
"RWMR1a-517"是输入的假注册码。

$$$1.整体着手，找准突破口

00401F71    .  A1 6C384200       mov eax,dword ptr ds:[42386C]
00401F76    .  6A 40             push 40                                            ; /Count = 40 (64.)
00401F78    .  50                push eax                                           ; |Buffer => 0012FC10
00401F79    .  68 CA000000       push 0CA                                           ; |ControlID = CA (202.)
00401F7E    .  53                push ebx                                           ; |hWnd
00401F7F    .  FF15 C0734100     call dword ptr ds:[<&USER32.GetDlgItemTextA>]      ; \GetDlgItemTextA
00401F85    .  8B0D 6C384200     mov ecx,dword ptr ds:[42386C]                      ;ECX 0012FC10 ASCII "RWMR1a-517"
00401F8B    .  51                push ecx
00401F8C    .  E8 4FFAFFFF       call Registra.004019E0                             ;校验call，返回eax，等于2则注册码合法
                                                                                    ；这个过程分析见后面
00401F91    .  83C4 04           add esp,4
00401F94    .  83F8 02           cmp eax,2                                          ；
00401F97    .  75 70             jnz short Registra.00402009                        ;  No jump
00401F99    .  8B15 6C384200     mov edx,dword ptr ds:[42386C]
00401F9F    .  83C9 FF           or ecx,FFFFFFFF
00401FA2    .  8BFA              mov edi,edx
00401FA4    .  33C0              xor eax,eax
00401FA6    .  F2:AE             repne scas byte ptr es:[edi]
00401FA8    .  F7D1              not ecx
00401FAA    .  2BF9              sub edi,ecx
00401FAC    .  52                push edx
00401FAD    .  8BC1              mov eax,ecx
00401FAF    .  8BF7              mov esi,edi
00401FB1    .  BF 782E4200       mov edi,Registra.00422E78
00401FB6    .  C1E9 02           shr ecx,2
00401FB9    .  F3:A5             rep movs dword ptr es:[edi],dword ptr ds:[esi]
00401FBB    .  8BC8              mov ecx,eax
00401FBD    .  83E1 03           and ecx,3
00401FC0    .  F3:A4             rep movs byte ptr es:[edi],byte ptr ds:[esi]
00401FC2    .  C705 D4334200 020>mov dword ptr ds:[4233D4],2
00401FCC    .  E8 4FFCFFFF       call Registra.00401C20
{
功能：将注册码保存到注册表中去。
通过检查注册表，发现注册码保存在两个地方，HKEY_CURRENT_USER以及HKEY_LOCAL_MACHINE这两个树下面都有。

00401C20   /$  A1 702E4200 mov eax,dword ptr ds:[422E70]
00401C25   |.  83F8 01     cmp eax,1
00401C28   |.  75 0C       jnz short Registra.00401C36
00401C2A   |.  8B4424 04   mov eax,dword ptr ss:[esp+4]
00401C2E   |.  68 B8E04100 push Registra.0041E0B8             ;  ASCII "Software\WMR10"
00401C33   |.  50          push eax
00401C34   |.  EB 0F       jmp short Registra.00401C45
00401C36   |>  83F8 02     cmp eax,2
00401C39   |.  75 17       jnz short Registra.00401C52
00401C3B   |.  8B4C24 04   mov ecx,dword ptr ss:[esp+4]
00401C3F   |.  68 A8E04100 push Registra.0041E0A8             ;  ASCII "Software\RMR10"
00401C44   |.  51          push ecx
00401C45   |>  68 60E14100 push Registra.0041E160             ;  ASCII "RegCode"
00401C4A   |.  E8 B1F3FFFF call Registra.00401000
00401C4F   |.  83C4 0C     add esp,0C
00401C52   |>  C705 603842>mov dword ptr ds:[423860],1
00401C5C   \.  C3          retn


}
00401FD1    .  83C4 04           add esp,4
00401FD4    .  6A 00             push 0                                             ; /Style = MB_OK|MB_APPLMODAL
00401FD6    .  68 F0324200       push Registra.004232F0                             ; |Title = ""
00401FDB    .  68 D4E14100       push Registra.0041E1D4                             ; |Text = "Registation Code Accepted"
00401FE0    .  53                push ebx                                           ; |hOwner
00401FE1    .  FF15 08744100     call dword ptr ds:[<&USER32.MessageBoxA>]          ; \MessageBoxA
00401FE7    .  6A 01             push 1                                             ; /Result = 1
00401FE9    .  53                push ebx                                           ; |hWnd
00401FEA    .  C705 68384200 010>mov dword ptr ds:[423868],1                        ; |
00401FF4    .  FF15 C4734100     call dword ptr ds:[<&USER32.EndDialog>]            ; \EndDialog
00401FFA    .  B8 01000000       mov eax,1
00401FFF    .  5F                pop edi
00402000    .  5E                pop esi
00402001    .  5D                pop ebp
00402002    .  5B                pop ebx
00402003    .  83C4 40           add esp,40
00402006    .  C2 1000           retn 10
00402009    >  6A 00             push 0                                             ; /Style = MB_OK|MB_APPLMODAL
0040200B    .  68 F0324200       push Registra.004232F0                             ; |Title = ""
00402010    .  68 B8E14100       push Registra.0041E1B8                             ; |Text = "Invalid Registration Code"
00402015    .  53                push ebx                                           ; |hOwner
00402016    .  C705 D4334200 000>mov dword ptr ds:[4233D4],0                        ; |
00402020    .  FF15 08744100     call dword ptr ds:[<&USER32.MessageBoxA>]          ; \MessageBoxA
00402026    >  57                push edi
00402027    .  8D4C24 44         lea ecx,dword ptr ss:[esp+44]
0040202B    .  56                push esi
0040202C    .  51                push ecx
0040202D    .  FFD5              call ebp
0040202F    .  85C0              test eax,eax
00402031    .  74 09             je short Registra.0040203C
00402033    .  6A 00             push 0                                             ; /Result = 0
00402035    .  53                push ebx                                           ; |hWnd
00402036    .  FF15 C4734100     call dword ptr ds:[<&USER32.EndDialog>]            ; \EndDialog
0040203C    >  33C0              xor eax,eax
0040203E    .  5F                pop edi
0040203F    .  5E                pop esi
00402040    .  5D                pop ebp
00402041    .  5B                pop ebx
00402042    .  83C4 40           add esp,40
00402045    .  C2 1000           retn 10

004019E0   /$  81EC C4000000     sub esp,0C4                         ;  Main call
004019E6   |.  55                push ebp
004019E7   |.  8BAC24 CC000000   mov ebp,dword ptr ss:[esp+CC]
004019EE   |.  56                push esi
004019EF   |.  57                push edi
004019F0   |.  55                push ebp
004019F1   |.  E8 2A1B0000       call Registra.00403520              ;  ToUpperCase
{sub_00403520 begin
 功能：小写字母转为大写字母。

  00403520   /$  51                push ecx
  00403521   |.  A1 085A4200       mov eax,dword ptr ds:[425A08]     ；[[425A08]]=0
  00403526   |.  53                push ebx
  00403527   |.  55                push ebp
  00403528   |.  33ED              xor ebp,ebp
  0040352A   |.  56                push esi
  0040352B   |.  57                push edi
  0040352C   |.  85C0              test eax,eax
  0040352E   |.  75 2E             jnz short Registra.0040355E
  00403530   |.  8B4424 18         mov eax,dword ptr ss:[esp+18]    ；EAX 0012FC10 ASCII "RWMR1a-517"
                                                                    ；EAX是注册码字符串的指针，指向首地址
  00403534   |.  8BD0              mov edx,eax
  00403536   |.  8038 00           cmp byte ptr ds:[eax],0
  00403539   |.  0F84 56010000     je Registra.00403695
  @@@@Begin LOOP:
  0040353F   |>  8A0A              /mov cl,byte ptr ds:[edx]           ;  小写转为大写，ToUpperCase
  00403541   |.  80F9 61           |cmp cl,61                          ;  asc(a)=61
  00403544   |.  7C 0A             |jl short Registra.00403550
  00403546   |.  80F9 7A           |cmp cl,7A                          ;  asc(z)=7A
  00403549   |.  7F 05             |jg short Registra.00403550
  0040354B   |.  80E9 20           |sub cl,20                          ；61-20=41，asc(A)=41,
；同时也要注意若是其他可打印字符，减去20以后又会是什么样的结果呢？
；20(Space)是ascii值最小的可打印字符，20+20=40=asc(@)
；带着疑惑，可以故意在假码中设置一些特定字符，继续往下分析。

  0040354E   |.  880A              |mov byte ptr ds:[edx],cl           ;写回，这个call的功能一目了然
  00403550   |>  8A4A 01           |mov cl,byte ptr ds:[edx+1]         ；取下一个字母
  00403553   |.  42                |inc edx                            ；指针后移
  00403554   |.  84C9              |test cl,cl
  00403556   |.^ 75 E7             \jnz short Registra.0040353F
  @@@@END LOOP.
  00403558   |.  5F                pop edi
  00403559   |.  5E                pop esi
  0040355A   |.  5D                pop ebp
  0040355B   |.  5B                pop ebx
  0040355C   |.  59                pop ecx
  0040355D   |.  C3                retn
sub_00403520 end

}
004019F6   |.  8A4D 00           mov cl,byte ptr ss:[ebp]             ；cl=52，这是注册码第一个字母的ascii值
004019F9   |.  83C4 04           add esp,4
004019FC   |.  80F9 20           cmp cl,20                            ；是否等于空格
004019FF   |.  8BC5              mov eax,ebp
00401A01   |.  75 0F             jnz short Registra.00401A12          ；跳！
00401A03   |.  B1 20             mov cl,20
00401A05   |>  84C9              /test cl,cl
00401A07   |.  74 09             |je short Registra.00401A12
00401A09   |.  8A48 01           |mov cl,byte ptr ds:[eax+1]
00401A0C   |.  40                |inc eax
00401A0D   |.  80F9 20           |cmp cl,20
00401A10   |.^ 74 F3             \je short Registra.00401A05
00401A12   |>  8A08              mov cl,byte ptr ds:[eax]            ；eax仍是注册码的首地址
00401A14   |.  8BD0              mov edx,eax
00401A16   |.  84C9              test cl,cl
00401A18   |.  74 2E             je short Registra.00401A48
00401A1A   |>  80F9 49           /cmp cl,49                          ;  asc(I)=49
00401A1D   |.  75 03             |jnz short Registra.00401A22        ；如果遇到"I",则用"1"代替。
00401A1F   |.  C600 31           |mov byte ptr ds:[eax],31           ;asc(1)=31
00401A22   |>  8038 4F           |cmp byte ptr ds:[eax],4F           ;  asc(O)=4F
00401A25   |.  75 03             |jnz short Registra.00401A2A
00401A27   |.  C600 30           |mov byte ptr ds:[eax],30           ；遇到"O",则用"0"代替。
00401A2A   |>  8A08              |mov cl,byte ptr ds:[eax]           ；取出，与空格比较
00401A2C   |.  80F9 20           |cmp cl,20
00401A2F   |.  74 14             |je short Registra.00401A45         ；是空格就跳
00401A31   |.  80F9 0A           |cmp cl,0A                          ；asc(0A)=LF,line feed,换行
00401A34   |.  74 0F             |je short Registra.00401A45
00401A36   |.  80F9 0D           |cmp cl,0D                          ；asc(0D)=CR,换行
00401A39   |.  74 0A             |je short Registra.00401A45
00401A3B   |.  8A48 01           |mov cl,byte ptr ds:[eax+1]         ；取下一个
00401A3E   |.  40                |inc eax                            ；指针后移
00401A3F   |.  84C9              |test cl,cl
00401A41   |.^ 75 D7             \jnz short Registra.00401A1A
00401A43   |.  EB 03             jmp short Registra.00401A48         ；跳
00401A45   |>  C600 00           mov byte ptr ds:[eax],0
00401A48   |>  8BFA              mov edi,edx                         ；EDI 0012FC10 ASCII "RWMR1a-517"
00401A4A   |.  83C9 FF           or ecx,FFFFFFFF                     ；ECX置为FFFFFFFF
00401A4D   |.  33C0              xor eax,eax
00401A4F   |.  8D7424 10         lea esi,dword ptr ss:[esp+10]
00401A53   |.  F2:AE             repne scas byte ptr es:[edi]
00401A55   |.  F7D1              not ecx                             ;  这几句的意思是得到注册码长度，存入ECX
00401A57   |.  2BF9              sub edi,ecx                         ;  恢复EDI，重新指向注册码
00401A59   |.  897424 0C         mov dword ptr ss:[esp+C],esi
00401A5D   |.  8BC1              mov eax,ecx                         ;  length
00401A5F   |.  8BF7              mov esi,edi
00401A61   |.  8B7C24 0C         mov edi,dword ptr ss:[esp+C]        ;  0012F6CC
00401A65   |.  C1E9 02           shr ecx,2
00401A68   |.  F3:A5             rep movs dword ptr es:[edi],dword p>;  move code from esi to edi
00401A6A   |.  8BC8              mov ecx,eax
00401A6C   |.  33C0              xor eax,eax
00401A6E   |.  83E1 03           and ecx,3
00401A71   |.  F3:A4             rep movs byte ptr es:[edi],byte ptr>
00401A73   |.  8BFA              mov edi,edx
00401A75   |.  83C9 FF           or ecx,FFFFFFFF
00401A78   |.  F2:AE             repne scas byte ptr es:[edi]
00401A7A   |.  F7D1              not ecx                             ;  length
00401A7C   |.  2BF9              sub edi,ecx
00401A7E   |.  8BD1              mov edx,ecx
00401A80   |.  8BF7              mov esi,edi
00401A82   |.  8BFD              mov edi,ebp
00401A84   |.  C1E9 02           shr ecx,2
00401A87   |.  F3:A5             rep movs dword ptr es:[edi],dword p>
00401A89   |.  8BCA              mov ecx,edx
00401A8B   |.  83E1 03           and ecx,3
00401A8E   |.  F3:A4             rep movs byte ptr es:[edi],byte ptr>
00401A90   |.  A1 702E4200       mov eax,dword ptr ds:[422E70]       ; 

00401A95   |.  83F8 01           cmp eax,1
00401A98   |.  75 78             jnz short Registra.00401B12
00401A9A   |.  6A 04             push 4                              ；"RWMR"的长度
00401A9C   |.  8D4424 14         lea eax,dword ptr ss:[esp+14]
00401AA0   |.  68 58E14100       push Registra.0041E158              ;  ASCII "RWMR"
00401AA5   |.  50                push eax                            ；EAX 0012F6CC ASCII "RWMR1A-517"
00401AA6   |.  E8 65190000       call Registra.00403410              ；跟进，见后面
00401AAB   |.  83C4 0C           add esp,0C
00401AAE   |.  F7D8              neg eax
00401AB0   |.  1BC0              sbb eax,eax
00401AB2   |.  40                inc eax
00401AB3   |.  75 19             jnz short Registra.00401ACE         ；跳了，若注册码前4位不是"RWMR"，则继续往下检测
00401AB5   |.  6A 03             push 3
00401AB7   |.  8D4C24 14         lea ecx,dword ptr ss:[esp+14]
00401ABB   |.  68 54E14100       push Registra.0041E154              ;  ASCII "RAV"
00401AC0   |.  51                push ecx
00401AC1   |.  E8 4A190000       call Registra.00403410
00401AC6   |.  83C4 0C           add esp,0C
00401AC9   |.  F7D8              neg eax
00401ACB   |.  1BC0              sbb eax,eax
00401ACD   |.  40                inc eax
00401ACE   |>  85C0              test eax,eax   
00401AD0   |.  0F85 B9000000     jnz Registra.00401B8F                ；跳
00401AD6   |.  6A 03             push 3
00401AD8   |.  8D5424 14         lea edx,dword ptr ss:[esp+14]
00401ADC   |.  68 50E14100       push Registra.0041E150              ;  ASCII "RVS"
00401AE1   |.  52                push edx
00401AE2   |.  E8 29190000       call Registra.00403410
00401AE7   |.  83C4 0C           add esp,0C
00401AEA   |.  F7D8              neg eax
00401AEC   |.  1BC0              sbb eax,eax
00401AEE   |.  40                inc eax
00401AEF   |.  85C0              test eax,eax
00401AF1   |.  0F85 98000000     jnz Registra.00401B8F
00401AF7   |.  6A 03             push 3
00401AF9   |.  8D4424 14         lea eax,dword ptr ss:[esp+14]
00401AFD   |.  68 4CE14100       push Registra.0041E14C              ;  ASCII "RMC"
00401B02   |.  50                push eax
00401B03   |.  E8 08190000       call Registra.00403410
00401B08   |.  83C4 0C           add esp,0C
00401B0B   |.  F7D8              neg eax
00401B0D   |.  1BC0              sbb eax,eax
00401B0F   |.  40                inc eax
00401B10   |.  EB 79             jmp short Registra.00401B8B

00401B12   |>  83F8 02           cmp eax,2
00401B15   |.  75 70             jnz short Registra.00401B87
00401B17   |.  6A 04             push 4
00401B19   |.  8D4C24 14         lea ecx,dword ptr ss:[esp+14]
00401B1D   |.  68 44E14100       push Registra.0041E144              ;  ASCII "RWMX"
00401B22   |.  51                push ecx
00401B23   |.  E8 E8180000       call Registra.00403410
00401B28   |.  83C4 0C           add esp,0C
00401B2B   |.  F7D8              neg eax
00401B2D   |.  1BC0              sbb eax,eax
00401B2F   |.  40                inc eax
00401B30   |.  75 19             jnz short Registra.00401B4B
00401B32   |.  6A 03             push 3
00401B34   |.  8D5424 14         lea edx,dword ptr ss:[esp+14]
00401B38   |.  68 54E14100       push Registra.0041E154              ;  ASCII "RAV"
00401B3D   |.  52                push edx
00401B3E   |.  E8 CD180000       call Registra.00403410
00401B43   |.  83C4 0C           add esp,0C
00401B46   |.  F7D8              neg eax
00401B48   |.  1BC0              sbb eax,eax
00401B4A   |.  40                inc eax
00401B4B   |>  85C0              test eax,eax
00401B4D   |.  75 40             jnz short Registra.00401B8F
00401B4F   |.  6A 03             push 3
00401B51   |.  8D4424 14         lea eax,dword ptr ss:[esp+14]
00401B55   |.  68 50E14100       push Registra.0041E150              ;  ASCII "RVS"
00401B5A   |.  50                push eax
00401B5B   |.  E8 B0180000       call Registra.00403410
00401B60   |.  83C4 0C           add esp,0C
00401B63   |.  F7D8              neg eax
00401B65   |.  1BC0              sbb eax,eax
00401B67   |.  40                inc eax
00401B68   |.  85C0              test eax,eax
00401B6A   |.  75 23             jnz short Registra.00401B8F
00401B6C   |.  6A 03             push 3
00401B6E   |.  8D4C24 14         lea ecx,dword ptr ss:[esp+14]
00401B72   |.  68 4CE14100       push Registra.0041E14C              ;  ASCII "RMC"
00401B77   |.  51                push ecx
00401B78   |.  E8 93180000       call Registra.00403410
00401B7D   |.  83C4 0C           add esp,0C
00401B80   |.  F7D8              neg eax
00401B82   |.  1BC0              sbb eax,eax
00401B84   |.  40                inc eax
00401B85   |.  EB 04             jmp short Registra.00401B8B

00401B87   |>  8B4424 0C         mov eax,dword ptr ss:[esp+C]
00401B8B   |>  85C0              test eax,eax
00401B8D   |.  74 6D             je short Registra.00401BFC
00401B8F   |>  8D5424 10         lea edx,dword ptr ss:[esp+10]       ; EDX 0012F6CC ASCII "RWMR1A-517"
00401B93   |.  8D4424 50         lea eax,dword ptr ss:[esp+50]       ;  0012F70C
00401B97   |.  52                push edx                            ; /String2
00401B98   |.  50                push eax                            ; |String1
00401B99   |.  FF15 E4714100     call dword ptr ds:[<&KERNEL32.lstrc>; \lstrcpyA
00401B9F   |.  8D4C24 50         lea ecx,dword ptr ss:[esp+50]       ;  ECX 0012F70C ASCII "RWMR1A-517"
00401BA3   |.  6A 2D             push 2D                             ;  asc(2D)="-"
00401BA5   |.  51                push ecx
00401BA6   |.  E8 A5170000       call Registra.00403350              ;  check "-"，见后面分析
00401BAB   |.  83C4 08           add esp,8
00401BAE   |.  85C0              test eax,eax                        ;  eax !=0
00401BB0   |.  74 5F             je short Registra.00401C11
00401BB2   |.  C600 00           mov byte ptr ds:[eax],0             ;  clear "-"
00401BB5   |.  8D9424 90000000   lea edx,dword ptr ss:[esp+90]       ； EDX=0012F74C
00401BBC   |.  8D4424 50         lea eax,dword ptr ss:[esp+50]       ;  EAX 0012F70C ASCII "RWMR1A"
00401BC0   |.  52                push edx
00401BC1   |.  50                push eax
00401BC2   |.  E8 E9FDFFFF       call Registra.004019B0              ;  见分析
00401BC7   |.  83C4 08           add esp,8
00401BCA   |.  8D4C24 10         lea ecx,dword ptr ss:[esp+10]       ;  ECX 0012F6CC ASCII "RWMR1A-517"
00401BCE   |.  8D9424 90000000   lea edx,dword ptr ss:[esp+90]       ;  EDX 0012F74C ASCII "RWMR1A-631"，这是真正的注册码.
                                                                     ；到这里基本上可以收工了，但我还是继续往下分析。
00401BD5   |.  51                push ecx
00401BD6   |.  52                push edx
00401BD7   |.  E8 94160000       call Registra.00403270              ；见分析，the last one!
00401BDC   |.  83C4 08           add esp,8
00401BDF   |.  85C0              test eax,eax                        ；eax为0
00401BE1   |.  75 19             jnz short Registra.00401BFC         ;  No jump
00401BE3   |.  C705 D4334200 020>mov dword ptr ds:[4233D4],2
00401BED   |.  B8 02000000       mov eax,2                           ；标志
00401BF2   |.  5F                pop edi
00401BF3   |.  5E                pop esi
00401BF4   |.  5D                pop ebp
00401BF5   |.  81C4 C4000000     add esp,0C4
00401BFB   |.  C3                retn

00401BFC   |>  68 E8030000       push 3E8                            ; /Timeout = 1000. ms
00401C01   |.  FF15 E8714100     call dword ptr ds:[<&KERNEL32.Sleep>; \Sleep
00401C07   |.  C705 D4334200 000>mov dword ptr ds:[4233D4],0
00401C11   |>  5F                pop edi
00401C12   |.  5E                pop esi
00401C13   |.  33C0              xor eax,eax
00401C15   |.  5D                pop ebp
00401C16   |.  81C4 C4000000     add esp,0C4
00401C1C   \.  C3                retn

00403410   /$  55                push ebp
00403411   |.  8BEC              mov ebp,esp
00403413   |.  57                push edi
00403414   |.  56                push esi
00403415   |.  53                push ebx
00403416   |.  8B4D 10           mov ecx,dword ptr ss:[ebp+10]
00403419   |.  0BC9              or ecx,ecx
0040341B   |.  0F84 E9000000     je Registra.0040350A
00403421   |.  8B75 08           mov esi,dword ptr ss:[ebp+8]            ;  ESI 0012F6CC ASCII "RWMR1A-517"
00403424   |.  8B7D 0C           mov edi,dword ptr ss:[ebp+C]            ;  EDI 0041E158 ASCII "RWMR"
00403427   |.  8D05 005A4200     lea eax,dword ptr ds:[425A00]           ;  eax=00425A00
0040342D   |.  8378 08 00        cmp dword ptr ds:[eax+8],0              ；[eax+8]=0
00403431   |.  75 4E             jnz short Registra.00403481
00403433   |.  B7 41             mov bh,41                               ;  asc(41)=A
00403435   |.  B3 5A             mov bl,5A                               ;  asc(5A)=Z
00403437   |.  B6 20             mov dh,20                               ；asc(20)=Space
00403439   |.  2E:8BC0           mov eax,eax
0040343C   |>  8A26              /mov ah,byte ptr ds:[esi]               ；假码
0040343E   |.  0AE4              |or ah,ah
00403440   |.  8A07              |mov al,byte ptr ds:[edi]               ；常数字符串"RWMR"
00403442   |.  74 21             |je short Registra.00403465
00403444   |.  0AC0              |or al,al
00403446   |.  74 1D             |je short Registra.00403465
00403448   |.  46                |inc esi
00403449   |.  47                |inc edi
0040344A   |.  38FC              |cmp ah,bh                             ；与"A"比较
0040344C   |.  72 06             |jb short Registra.00403454
0040344E   |.  38DC              |cmp ah,bl                             ；与"Z"比较
00403450   |.  77 02             |ja short Registra.00403454
00403452   |.  02E6              |add ah,dh                             ；变为小写
00403454   |>  38F8              |cmp al,bh                             ；与"A"比较
00403456   |.  72 06             |jb short Registra.0040345E
00403458   |.  38D8              |cmp al,bl                             ；与"Z"比较
0040345A   |.  77 02             |ja short Registra.0040345E
0040345C   |.  02C6              |add al,dh                             ；变成小写
0040345E   |>  38C4              |cmp ah,al                             ；假码与常数串相比较
00403460   |.  75 0D             |jnz short Registra.0040346F
00403462   |.  49                |dec ecx                               ；计数器-1，初值4，即常数串的长度
                                                                        ；所以注册码的前面4位是常数串"RWMR"
00403463   |.^ 75 D7             \jnz short Registra.0040343C
00403465   |>  33C9              xor ecx,ecx                            ；置0，下面有置-1的语句，这是一个BOOL参数
00403467   |.  38C4              cmp ah,al
00403469   |.  0F84 9B000000     je Registra.0040350A                   ；跳
0040346F   |>  B9 FFFFFFFF       mov ecx,-1
00403474   |.  0F82 90000000     jb Registra.0040350A
0040347A   |.  F7D9              neg ecx
0040347C   |.  E9 89000000       jmp Registra.0040350A
00403481   |>  F0:FF05 E86D4200  lock inc dword ptr ds:[426DE8]
00403488   |.  833D E46D4200 00  cmp dword ptr ds:[426DE4],0
0040348F   |.  7F 04             jg short Registra.00403495
00403491   |.  6A 00             push 0
00403493   |.  EB 19             jmp short Registra.004034AE
00403495   |>  F0:FF0D E86D4200  lock dec dword ptr ds:[426DE8]
0040349C   |.  8BD9              mov ebx,ecx
0040349E   |.  6A 13             push 13
004034A0   |.  E8 2B360000       call Registra.00406AD0
004034A5   |.  C70424 01000000   mov dword ptr ss:[esp],1
004034AC   |.  8BCB              mov ecx,ebx
004034AE   |>  33C0              xor eax,eax
004034B0   |.  33DB              xor ebx,ebx
004034B2   |.  8BC0              mov eax,eax
004034B4   |>  8A06              /mov al,byte ptr ds:[esi]
004034B6   |.  0BC0              |or eax,eax
004034B8   |.  8A1F              |mov bl,byte ptr ds:[edi]
004034BA   |.  74 23             |je short Registra.004034DF
004034BC   |.  0BDB              |or ebx,ebx
004034BE   |.  74 1F             |je short Registra.004034DF
004034C0   |.  46                |inc esi
004034C1   |.  47                |inc edi
004034C2   |.  51                |push ecx
004034C3   |.  50                |push eax
004034C4   |.  53                |push ebx
004034C5   |.  E8 96370000       |call Registra.00406C60
004034CA   |.  8BD8              |mov ebx,eax
004034CC   |.  83C4 04           |add esp,4
004034CF   |.  E8 8C370000       |call Registra.00406C60
004034D4   |.  83C4 04           |add esp,4
004034D7   |.  59                |pop ecx
004034D8   |.  3BC3              |cmp eax,ebx
004034DA   |.  75 09             |jnz short Registra.004034E5
004034DC   |.  49                |dec ecx
004034DD   |.^ 75 D5             \jnz short Registra.004034B4
004034DF   |>  33C9              xor ecx,ecx
004034E1   |.  3BC3              cmp eax,ebx
004034E3   |.  74 09             je short Registra.004034EE
004034E5   |>  B9 FFFFFFFF       mov ecx,-1
004034EA   |.  72 02             jb short Registra.004034EE
004034EC   |.  F7D9              neg ecx
004034EE   |>  58                pop eax
004034EF   |.  0BC0              or eax,eax
004034F1   |.  75 09             jnz short Registra.004034FC
004034F3   |.  F0:FF0D E86D4200  lock dec dword ptr ds:[426DE8]
004034FA   |.  EB 0E             jmp short Registra.0040350A
004034FC   |>  8BD9              mov ebx,ecx
004034FE   |.  6A 13             push 13                                 ; /Arg1 = 00000013
00403500   |.  E8 4B360000       call Registra.00406B50                  ; \Registra.00406B50
00403505   |.  83C4 04           add esp,4
00403508   |.  8BCB              mov ecx,ebx
0040350A   |>  8BC1              mov eax,ecx                             ；Bool参数到eax，程序返回后根据eax决定流程
0040350C   |.  5B                pop ebx
0040350D   |.  5E                pop esi
0040350E   |.  5F                pop edi
0040350F   |.  C9                leave
00403510   \.  C3                retn


00403340   /> /8D42 FF     lea eax,dword ptr ds:[edx-1]
00403343   |. |5B          pop ebx
00403344   |. |C3          retn
00403345   |  |2E          db 2E                                   ;  CHAR '.'
00403346   |  |8BC0        mov eax,eax
00403348   |  |2E          db 2E                                   ;  CHAR '.'
00403349   |  |8BC0        mov eax,eax
0040334B   |  |2E          db 2E                                   ;  CHAR '.'
0040334C   |  |8BC0        mov eax,eax
0040334E   |  |8BC0        mov eax,eax
00403350   |$ |33C0        xor eax,eax                              ；F7，进来后，land here
00403352   |. |8A4424 08   mov al,byte ptr ss:[esp+8]              ；2D
00403356   |> |53          push ebx
00403357   |. |8BD8        mov ebx,eax                             ；ebx=002D
00403359   |. |C1E0 08     shl eax,8                              ；eax=002D00
0040335C   |. |8B5424 08   mov edx,dword ptr ss:[esp+8]           ；EDX 0012F70C ASCII "RWMR1A-517"
00403360   |. |F7C2 030000>test edx,3
00403366   |. |74 13       je short Registra.0040337B             ；跳了
00403368   |> |8A0A        /mov cl,byte ptr ds:[edx]              ；
0040336A   |. |42          |inc edx
0040336B   |. |38D9        |cmp cl,bl                             ；
0040336D   |.^\74 D1       |je short Registra.00403340
0040336F   |.  84C9        |test cl,cl
00403371   |.  74 51       |je short Registra.004033C4
00403373   |.  F7C2 030000>|test edx,3
00403379   |.^ 75 ED       \jnz short Registra.00403368
0040337B   |>  0BD8        or ebx,eax                              ；
0040337D   |.  57          push edi
0040337E   |.  8BC3        mov eax,ebx                             ;  eax=2D2D
00403380   |.  C1E3 10     shl ebx,10                              ;  
00403383   |.  56          push esi
00403384   |.  0BD8        or ebx,eax                              ；ebx=2D2D2D2D
00403386   |>  8B0A        /mov ecx,dword ptr ds:[edx]
00403388   |.  BF FFFEFE7E |mov edi,7EFEFEFF
0040338D   |.  8BC1        |mov eax,ecx
0040338F   |.  8BF7        |mov esi,edi                            ;  7EFEFEFF
00403391   |.  33CB        |xor ecx,ebx
00403393   |.  03F0        |add esi,eax
00403395   |.  03F9        |add edi,ecx
00403397   |.  83F1 FF     |xor ecx,FFFFFFFF
0040339A   |.  83F0 FF     |xor eax,FFFFFFFF
0040339D   |.  33CF        |xor ecx,edi
0040339F   |.  33C6        |xor eax,esi
004033A1   |.  83C2 04     |add edx,4
004033A4   |.  81E1 000101>|and ecx,81010100
004033AA   |.  75 1C       |jnz short Registra.004033C8            ;  Must jump

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swordkok
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学习一下
2005-10-10 21:45
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skyege
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感觉乱而已！！！！
2005-10-10 23:16
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winndy
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最初由 skyege 发布
感觉乱而已！！！！


谢谢指教。
请问您是说形式乱（排版问题）还是分析得乱？
看过您得两篇精华，写作确实比较讲究，不过我喜欢随意一点啦..
2005-10-10 23:43
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lnn1123
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2005-10-11 11:25
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liuyilin
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辛苦
2005-10-11 11:40
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pendan2001
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2005-10-11 12:00
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夜凉如水
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2005-10-12 10:50
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