GIF Movie Gear逆向实战+注册代码+补丁

 

GIF Movie Gear逆向实战+注册代码+补丁

1. 准备

我是在windows 8.1 x64上进行的操作。有不足之处，还望大虾指出。

1. 获取资源

网站下载：http://www.gamani.com/gmgdown.htm，国内站点是汉化破解好的。

GIF Movie Gear4.2.3是一款GIF动画制作软件，几乎有需要 制作GIF动画的编辑功能它都有，无须再用其它的图型软件辅助。GIF Movie Gear可以处理背景透明化而且做法容易，做好的图片可以做最佳化处理使图片减肥，另外它除了可 以把做好的图片存成GIF的动画图外，还可支援PSD，JPEG，AVI，BMP，GIF，与AVI格式输出。

1. 受限预先查看

1. 运行

确实受限了，其实在推出时也恼人，弹窗不然直接退出要等下出现个按钮，点ok关闭。

 

1. 查看pe信息

貌似没有欺骗我们，没加壳

1. 找看看有无注册窗口Version 4.2.3

1. 定位

   1. 程序要判断注册的对不对，首先获取输入值。

回到od，查找一些符号，这里找GetDlgItemText或者GetWindowText，这里直接找GetWindowText（因为GetDlgItemText=GetDlgItem+GetWindowText，没有找到也没关系（如LoadLibary），直接到User2.dll模块找）并且是ASCII版的。方便点的有cmdBar插件直接入下图方式下断。

1. 回到界面点ok按钮，断点起作用了，和预想的一样。

看看堆栈，或者直接Alt+F9执行到程序模块。

可以看到两次调用GetWindowTextA，后面一个call，入参是EDX和ECX，来自于获取到编辑框里的值的缓冲区[LOCAL.49]和[LOCAL.24]。控件1103是Name，1104是Code。

后面还有一个根据返回值来jz的，并且有创建注册表项的字符串。这也太明显了，太快了，怎么这个就不设防。。。

 

注册信息保存在注册表HKEY_LOCAL_MACHINE \Software\gamani\GIFMovieGear\2.0下的两个键SubKey = "RegName3"和SubKey = "RegCode3" ，过期时间来自HKLM\SOFTWARE\Wow6432Node\Loani\MG4\stamp，保存的是秒数。

new Date(0x540b1713 * 1000) = Sat Jan 17 1970 15:40:12 GMT+0800 (China Standard Time)

需要注意x64位，这里的调用，注册表会被重定向：

3:29:05.3795926 PM    movgear.exe    5756    RegQueryValue    HKCU\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\gamani\GIFMovieGear\2.0\RegName3    SUCCESS    Type: REG_SZ, Length: 10, Data: 苏北小麦

3:29:06.8898693 AM    movgear.exe    4380    RegQueryValue    HKCU\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Wow6432Node\gamani\GIFMovieGear\2.0\RegCode3    SUCCESS    Type: REG_SZ, Length: 26, Data: mg37sfhh4045

3:29:53.9921742 AM    movgear.exe    4380    RegQueryValue    HKLM\SOFTWARE\Wow6432Node\Loani\MG4\stamp    SUCCESS    Type: REG_BINARY, Length: 4, Data: 13 17 0B 54

 

1. 注册获取窗口信息

CPU Disasm

地址十六进制数据指令注释

004344F9 |> \8BBC24 2C0100 MOV EDI,DWORD PTR SS:[ARG.1] ; 事例 1 of switch movgear.4344D1

00434500 |. 8B35 D0F44700 MOV ESI,DWORD PTR DS:[<&USER32.GetDlgIte

00434506 |. 6A 64 PUSH 64 ; /MaxCount = 100.

00434508 |. 8D5424 64 LEA EDX,[LOCAL.49] ; |

0043450C |. 52 PUSH EDX ; |String => OFFSET LOCAL.49

0043450D |. 68 4F040000 PUSH 44F ; |/ItemID = 1103.

00434512 |. 57 PUSH EDI ; ||hDialog => [ARG.1]

00434513 |. FFD6 CALL ESI ; |\USER32.GetDlgItem

00434515 |. 8B1D 4CF34700 MOV EBX,DWORD PTR DS:[<&USER32.GetWindow ; |

0043451B |. 50 PUSH EAX ; |hWnd

0043451C |. FFD3 CALL EBX ; \USER32.GetWindowTextA

0043451E |. 6A 64 PUSH 64 ; /MaxCount = 100.

00434520 |. 8D8424 C80000 LEA EAX,[LOCAL.24] ; |

00434527 |. 50 PUSH EAX ; |String => OFFSET LOCAL.24

00434528 |. 68 50040000 PUSH 450 ; |/ItemID = 1104.

0043452D |. 57 PUSH EDI ; ||hDialog => [ARG.1]

0043452E |. FFD6 CALL ESI ; |\USER32.GetDlgItem

00434530 |. 50 PUSH EAX ; |hWnd

00434531 |. FFD3 CALL EBX ; \USER32.GetWindowTextA

00434533 |. 8D8C24 C40000 LEA ECX,[LOCAL.24]

0043453A |. 51 PUSH ECX ; /Arg2 => OFFSET LOCAL.24

0043453B |. 8D5424 64 LEA EDX,[LOCAL.49] ; |

0043453F |. 52 PUSH EDX ; |Arg1 => OFFSET LOCAL.49

00434540 |. E8 EBFBFFFF CALL 00434130 ; \movgear.00434130

00434545 |. 83C4 08 ADD ESP,8

00434548 |. 85C0 TEST EAX,EAX

0043454A |. 0F84 B6000000 JZ 00434606

00434550 |. 8D4424 10 LEA EAX,[LOCAL.69]

00434554 |. 50 PUSH EAX ; /pDisposition => OFFSET LOCAL.69

00434555 |. 8D4C24 10 LEA ECX,[LOCAL.70] ; |

00434559 |. 51 PUSH ECX ; |pResult => OFFSET LOCAL.70

0043455A |. 6A 00 PUSH 0 ; |pSecurity = NULL

0043455C |. 68 3F000F00 PUSH 0F003F ; |DesiredAccess = KEY_ALL_ACCESS

00434561 |. 6A 00 PUSH 0 ; |Options = REG_OPTION_NON_VOLATILE

00434563 |. 68 85F64700 PUSH OFFSET 0047F685 ; |Class

00434568 |. 6A 00 PUSH 0 ; |Reserved = 0

0043456A |. 68 84E44800 PUSH OFFSET 0048E484 ; |Subkey = "Software\gamani\GIFMovieGear\2.0"

0043456F |. 68 02000080 PUSH 80000002 ; |hKey = HKEY_LOCAL_MACHINE

00434574 |. FF15 0CF04700 CALL DWORD PTR DS:[<&ADVAPI32.RegCreateK ; \ADVAPI32.RegCreateKeyExA

0043457A |. 8D4424 60 LEA EAX,[LOCAL.49]

0043457E |. 8D50 01 LEA EDX,[EAX+1]

00434581 |> 8A08 /MOV CL,BYTE PTR DS:[EAX]

00434583 |. 40 |INC EAX

00434584 |. 84C9 |TEST CL,CL

00434586 |.^ 75 F9 \JNZ SHORT 00434581

00434588 |. 8B35 00F04700 MOV ESI,DWORD PTR DS:[<&ADVAPI32.RegSetV

0043458E |. 2BC2 SUB EAX,EDX

00434590 |. 40 INC EAX

00434591 |. 50 PUSH EAX ; /DataSize

00434592 |. 8B4424 10 MOV EAX,DWORD PTR SS:[LOCAL.70] ; |

00434596 |. 8D5424 64 LEA EDX,[LOCAL.49] ; |

0043459A |. 52 PUSH EDX ; |Data => OFFSET LOCAL.49

0043459B |. 6A 01 PUSH 1 ; |Type = REG_SZ

0043459D |. 6A 00 PUSH 0 ; |Reserved = 0

0043459F |. 68 C8F34800 PUSH OFFSET 0048F3C8 ; |SubKey = "RegName3"

004345A4 |. 50 PUSH EAX ; |hKey => [LOCAL.70]

004345A5 |. FFD6 CALL ESI ; \ADVAPI32.RegSetValueExA

004345A7 |. 8D8424 C40000 LEA EAX,[LOCAL.24]

004345AE |. 8D48 01 LEA ECX,[EAX+1]

004345B1 |> 8A10 /MOV DL,BYTE PTR DS:[EAX]

004345B3 |. 40 |INC EAX

004345B4 |. 84D2 |TEST DL,DL

004345B6 |.^ 75 F9 \JNZ SHORT 004345B1

004345B8 |. 8B5424 0C MOV EDX,DWORD PTR SS:[LOCAL.70]

004345BC |. 2BC1 SUB EAX,ECX

004345BE |. 40 INC EAX

004345BF |. 50 PUSH EAX ; /DataSize

004345C0 |. 8D8C24 C80000 LEA ECX,[LOCAL.24] ; |

004345C7 |. 51 PUSH ECX ; |Data => OFFSET LOCAL.24

004345C8 |. 6A 01 PUSH 1 ; |Type = REG_SZ

004345CA |. 6A 00 PUSH 0 ; |Reserved = 0

004345CC |. 68 D4F34800 PUSH OFFSET 0048F3D4 ; |SubKey = "RegCode3"

004345D1 |. 52 PUSH EDX ; |hKey => [LOCAL.70]

004345D2 |. FFD6 CALL ESI ; \ADVAPI32.RegSetValueExA

004345D4 |. 8B4424 0C MOV EAX,DWORD PTR SS:[LOCAL.70]

004345D8 |. 50 PUSH EAX ; /hKey => [LOCAL.70]

004345D9 |. FF15 18F04700 CALL DWORD PTR DS:[<&ADVAPI32.RegCloseKe ; \ADVAPI32.RegCloseKey

004345DF |. 68 E0F34800 PUSH OFFSET 0048F3E0 ; /Subkey = "Software\Loani\MG4"

004345E4 |. 68 02000080 PUSH 80000002 ; |hKey = HKEY_LOCAL_MACHINE

004345E9 |. FF15 14F04700 CALL DWORD PTR DS:[<&ADVAPI32.RegDeleteK ; \ADVAPI32.RegDeleteKeyA

004345EF |. 6A 01 PUSH 1 ; /Result = 1

004345F1 |. 57 PUSH EDI ; |hDialog => [ARG.1]

004345F2 |. FF15 A4F34700 CALL DWORD PTR DS:[<&USER32.EndDialog>] ; \USER32.EndDialog

004345F8 |. 5F POP EDI

004345F9 |. 5E POP ESI

004345FA |. 33C0 XOR EAX,EAX

004345FC |. 5B POP EBX

004345FD |. 81C4 1C010000 ADD ESP,11C

00434603 |. C2 1000 RETN 10

00434606 |> 6A 30 PUSH 30 ; /Arg4 = 30

00434608 |. 68 159D0000 PUSH 9D15 ; |Arg3 = 9D15

0043460D |. 68 149D0000 PUSH 9D14 ; |Arg2 = 9D14

00434612 |. 57 PUSH EDI ; |Arg1 => [ARG.1]

00434613 |. E8 F8D8FDFF CALL 00411F10 ; \movgear.00411F10

00434618 |. 83C4 10 ADD ESP,10

0043461B |. 68 4F040000 PUSH 44F ; /ItemID = 1103.

00434620 |. 57 PUSH EDI ; |hDialog => [ARG.1]

00434621 |. FFD6 CALL ESI ; \USER32.GetDlgItem

00434623 |. 50 PUSH EAX ; /hWnd

00434624 |. FF15 A8F44700 CALL DWORD PTR DS:[<&USER32.SetFocus>] ; \USER32.SetFocus

0043462A |. 5F POP EDI

0043462B |. 5E POP ESI

0043462C |. 33C0 XOR EAX,EAX

0043462E |. 5B POP EBX

0043462F |. 81C4 1C010000 ADD ESP,11C

00434635 |. C2 1000 RETN 10

View Code

 

 

1. 失败弹窗走

   

   CPU Disasm
   地址        十六进制数据            指令                                       注释
   00411EE0  /$  8B4424 04     MOV EAX,DWORD PTR SS:[ARG.1]             ; movgear.00411EE0(推测 Arg1)
   00411EE4  |.  8B0D C4C24A00 MOV ECX,DWORD PTR DS:[4AC2C4]
   00411EEA  |.  68 00020000   PUSH 200                                 ; /Count = 512.
   00411EEF  |.  68 80BF4A00   PUSH OFFSET 004ABF80                     ; |Buffer = "The information you have provided is invalid. Please be sure that you typed it exactly as it was given to you."
   00411EF4  |.  50            PUSH EAX                                 ; |StringID => [ARG.1]
   00411EF5  |.  51            PUSH ECX                                 ; |hInst => [4AC2C4] = 00400000 ('movgear')
   00411EF6  |.  FF15 C0F44700 CALL DWORD PTR DS:[<&USER32.LoadStringA> ; \USER32.LoadStringA
   00411EFC  |.  85C0          TEST EAX,EAX
   00411EFE  |.  74 0D         JZ SHORT 00411F0D
   00411F00  |.  3D 00020000   CMP EAX,200
   00411F05  |.  7D 06         JGE SHORT 00411F0D
   00411F07  |.  B8 80BF4A00   MOV EAX,OFFSET 004ABF80                  ; ASCII "The information you have provided is invalid. Please be sure that you typed it exactly as it was given to you."
   00411F0C  |.  C3            RETN
   00411F0D  |>  33C0          XOR EAX,EAX
   00411F0F  \.  C3            RETN 
   
   00411F10  /$  8B4C24 0C     MOV ECX,DWORD PTR SS:[ARG.3]             ; movgear.00411F10(推测 Arg1,Arg2,Arg3,Arg4)
   00411F14  |.  8B15 C4C24A00 MOV EDX,DWORD PTR DS:[4AC2C4]
   00411F1A  |.  81EC 00010000 SUB ESP,100
   00411F20  |.  68 FF000000   PUSH 0FF                                 ; /Count = 255.
   00411F25  |.  8D4424 04     LEA EAX,[LOCAL.63]                       ; |
   00411F29  |.  50            PUSH EAX                                 ; |Buffer => OFFSET LOCAL.63
   00411F2A  |.  51            PUSH ECX                                 ; |StringID = 40213. => 'Invalid Registration Info'
   00411F2B  |.  52            PUSH EDX                                 ; |hInst => [4AC2C4] = 00400000 ('movgear')
   00411F2C  |.  FF15 C0F44700 CALL DWORD PTR DS:[<&USER32.LoadStringA> ; \USER32.LoadStringA
   00411F32  |.  8B8424 100100 MOV EAX,DWORD PTR SS:[ARG.4]
   00411F39  |.  8B9424 080100 MOV EDX,DWORD PTR SS:[ARG.2]
   00411F40  |.  0D 00200000   OR EAX,00002000
   00411F45  |.  50            PUSH EAX                                 ; /Type
   00411F46  |.  8D4C24 04     LEA ECX,[LOCAL.63]                       ; |
   00411F4A  |.  51            PUSH ECX                                 ; |Caption => OFFSET LOCAL.63
   00411F4B  |.  52            PUSH EDX                                 ; |/Arg1 => [ARG.2]
   00411F4C  |.  E8 8FFFFFFF   CALL 00411EE0                            ; |\movgear.00411EE0
   00411F51  |.  83C4 04       ADD ESP,4                                ; |
   00411F54  |.  50            PUSH EAX                                 ; |Text
   00411F55  |.  8B8424 100100 MOV EAX,DWORD PTR SS:[ARG.1]             ; |
   00411F5C  |.  50            PUSH EAX                                 ; |hOwner => [ARG.1]
   00411F5D  |.  FF15 C4F44700 CALL DWORD PTR DS:[<&USER32.MessageBoxA> ; \USER32.MessageBoxA
   00411F63  |.  81C4 00010000 ADD ESP,100
   00411F69  \.  C3            RETN

   View Code

    

1. 关键

   1. 看注册过程

我们来看看0048F3F8偏移处的值，32个黑名单

1. 第一种注册码验证过程，Code是mg37开头就是走这种的。

CPU Disasm
地址        十六进制数据            指令                                               注释
00434130  /$  53            PUSH EBX                                         ; movgear.00434130(推测 Arg1,Arg2)
00434131  |.  55            PUSH EBP
00434132  |.  8B6C24 10     MOV EBP,DWORD PTR SS:[ARG.2]                     ; EBP指向Code，ASCII "12345678"
00434136  |.  807D 00 6D    CMP BYTE PTR SS:[EBP],6D                         ; Code的第一字节，和'm'比较
0043413A  |.  56            PUSH ESI
0043413B  |.  57            PUSH EDI
0043413C  |.  0F85 AD000000 JNE 004341EF
00434142  |.  807D 01 67    CMP BYTE PTR SS:[EBP+1],67                       ; Code的第2字节，和'g'比较
00434146  |.  0F85 A3000000 JNE 004341EF
0043414C  |.  807D 02 33    CMP BYTE PTR SS:[EBP+2],33                       ; Code的第3字节，和'3'比较
00434150  |.  0F85 99000000 JNE 004341EF
00434156  |.  807D 03 37    CMP BYTE PTR SS:[EBP+3],37                       ; Code的第4字节，和'7'比较
0043415A  |.  0F85 8F000000 JNE 004341EF
00434160  |.  33DB          XOR EBX,EBX                                      ; 和黑名单库里的比较
00434162  |>  8BBB F8F34800 /MOV EDI,DWORD PTR DS:[EBX+48F3F8]               ; 到 PTR ASCII "mvg21951736"
00434168  |.  8BC7          |MOV EAX,EDI                                     ; strlen开始
0043416A  |.  8D50 01       |LEA EDX,[EAX+1]
0043416D  |.  8D49 00       |LEA ECX,[ECX]
00434170  |>  8A08          |/MOV CL,BYTE PTR DS:[EAX]
00434172  |.  40            ||INC EAX
00434173  |.  84C9          ||TEST CL,CL
00434175  |.^ 75 F9         |\JNZ SHORT 00434170
00434177  |.  2BC2          |SUB EAX,EDX                                     ; EAX = strlen()
00434179  |.  8BC8          |MOV ECX,EAX                                     ; blackLengthECX = blackLengthEAX，比较次数
0043417B  |.  8BF5          |MOV ESI,EBP                                     ; pszchESI = pszchEBP
0043417D  |.  33C0          |XOR EAX,EAX
0043417F  |.  F3:A6         |REPE CMPS BYTE PTR DS:[ESI],BYTE PTR ES:[EDI]
00434181  |.  74 65         |JE SHORT 004341E8                               ; 黑名单直接返回FALSE
00434183  |.  83C3 04       |ADD EBX,4
00434186  |.  81FB 80000000 |CMP EBX,80
0043418C  |.^ 72 D4         \JB SHORT 00434162
0043418E  |.  807D 04 73    CMP BYTE PTR SS:[EBP+4],73                       ; Code的第5字节，和's'比较
00434192  |.  75 01         JNE SHORT 00434195
00434194  |.  45            INC EBP
00434195  |>  8D4D 07       LEA ECX,[EBP+7]                                  ; pszchECX = pszchCode + 7或8
00434198  |.  51            PUSH ECX
00434199  |.  E8 56BE0300   CALL 0046FFF4
0043419E  |.  8B5C24 18     MOV EBX,DWORD PTR SS:[ARG.1]                     ; pszchNameEBX指向Name
004341A2  |.  8A13          MOV DL,BYTE PTR DS:[EBX]                         ; EDX_DL = *pszchNameEBX
004341A4  |.  83C4 04       ADD ESP,4
004341A7  |.  33C9          XOR ECX,ECX
004341A9  |.  84D2          TEST DL,DL                                       ; 判断是否空串
004341AB  |.  8BFB          MOV EDI,EBX                                      ; pszchCodeEDI = pszchCodeEBX
004341AD  |.  BE DF0B0000   MOV ESI,0BDF                                     ; ESI = 0BDF=3039
004341B2  |.  74 26         JZ SHORT 004341DA                                ; 
004341B4  |>  0FBED2        /MOVSX EDX,DL
004341B7  |.  41            |INC ECX
004341B8  |.  0FAFD1        |IMUL EDX,ECX
004341BB  |.  03F2          |ADD ESI,EDX                                     ; ESI += *pszchEDI * ECX
004341BD  |.  81FE BE170000 |CMP ESI,17BE
004341C3  |.  7E 06         |JLE SHORT 004341CB
004341C5  |.  81EE BE170000 |SUB ESI,17BE                                    ; ESI += *pszchEDI * ECX - 6078.
004341CB  |>  83F9 0A       |CMP ECX,0A
004341CE  |.  7E 02         |JLE SHORT 004341D2
004341D0  |.  33C9          |XOR ECX,ECX
004341D2  |>  8A57 01       |MOV DL,BYTE PTR DS:[EDI+1]
004341D5  |.  47            |INC EDI
004341D6  |.  84D2          |TEST DL,DL
004341D8  |.^ 75 DA         \JNZ SHORT 004341B4
004341DA  |>  3BF0          CMP ESI,EAX
004341DC  |.  75 15         JNE SHORT 004341F3
004341DE  |.  5F            POP EDI
004341DF  |.  5E            POP ESI
004341E0  |.  5D            POP EBP
004341E1  |.  B8 01000000   MOV EAX,1
004341E6  |.  5B            POP EBX
004341E7  |.  C3            RETN
004341E8  |>  5F            POP EDI
004341E9  |.  5E            POP ESI
004341EA  |.  5D            POP EBP
004341EB  |.  33C0          XOR EAX,EAX
004341ED  |.  5B            POP EBX
004341EE  |.  C3            RETN
004341EF  |>  8B5C24 14     MOV EBX,DWORD PTR SS:[ARG.1]                     ; EBX指向Name，ASCII "Fang"
004341F3  |>  55            PUSH EBP
004341F4  |.  53            PUSH EBX
004341F5  |.  E8 16FCFFFF   CALL 00433E10
004341FA  |.  83C4 08       ADD ESP,8
004341FD  |.  5F            POP EDI
004341FE  |.  5E            POP ESI
004341FF  |.  5D            POP EBP
00434200  |.  5B            POP EBX
00434201  \.  C3            RETN

View Code

1. 第二种注册码生成过程，直接比较Code == Func(Name)形式，这是最初级方式，容易点。

 

EBP = EDX

= ((EAX + (1 - pszHKRWQ) -1) * (EAX + (1 - pszHKRWQ)) + EBP) % strlen(pszHKRWQ)

= ((EAX - pszHKRWQ) * (EAX - pszHKRWQ + 1) +EBP) % 28

= (indexOf(pszHKRWQ, pszOkName[i]) * (indexOf(pszHKRWQ, pszOkName[i]) + 1) +EBP) % 28

 

CPU Disasm

地址十六进制数据指令注释

00433E10 /$ 8B4424 04 MOV EAX,DWORD PTR SS:[ARG.1]

00433E14 |. 8D9424 38FFFF LEA EDX,[LOCAL.49]

00433E1B |. 81EC D8000000 SUB ESP,0D8 ; 0D8=216.分配空间

00433E21 |. 2BD0 SUB EDX,EAX

00433E23 |> 8A08 /MOV CL,BYTE PTR DS:[EAX] ; 拷贝Name倒Local.49缓冲区

00433E25 |. 880C02 |MOV BYTE PTR DS:[EAX+EDX],CL

00433E28 |. 40 |INC EAX

00433E29 |. 84C9 |TEST CL,CL

00433E2B |.^ 75 F6 \JNZ SHORT 00433E23

00433E2D |. 53 PUSH EBX

00433E2E |. 55 PUSH EBP

00433E2F |. 56 PUSH ESI

00433E30 |. 57 PUSH EDI

00433E31 |. 8D4424 20 LEA EAX,[LOCAL.49]

00433E35 |. 50 PUSH EAX ; /String => OFFSET LOCAL.49

00433E36 |. FF15 1CF34700 CALL DWORD PTR DS:[<&USER32.CharUpperA>] ; \USER32.CharUpperA

00433E3C |. 8A4424 20 MOV AL,BYTE PTR SS:[LOCAL.49] ; Local.49里全是大写了

00433E40 |. 84C0 TEST AL,AL ; 判断Local.49是否为空串

00433E42 |. 8D7424 20 LEA ESI,[LOCAL.49]

00433E46 |. 8D7C24 20 LEA EDI,[LOCAL.49]

00433E4A |. 74 26 JZ SHORT 00433E72

00433E4C |. 8D6424 00 LEA ESP,[LOCAL.57] ; Name里在"HKRWQV2958DWNTQRGNSCFSXAZPYK"的字符拷贝到pszEDIBuffer里，既写回LOCAL.49缓冲区

00433E50 |> 0FBE0E /MOVSX ECX,BYTE PTR DS:[ESI] ; char chECX = *pszESI

00433E53 |. 51 |PUSH ECX

00433E54 |. 68 78F44800 |PUSH OFFSET 0048F478 ; ASCII "HKRWQV2958DWNTQRGNSCFSXAZPYK"

00433E59 |. E8 E2C10300 |CALL 00470040 ; 查找字符

00433E5E |. 83C4 08 |ADD ESP,8

00433E61 |. 85C0 |TEST EAX,EAX ; 判断是否找到，返回值非空为找到

00433E63 |. 74 05 |JZ SHORT 00433E6A

00433E65 |. 8A16 |MOV DL,BYTE PTR DS:[ESI] ; char chDL = *pszESI

00433E67 |. 8817 |MOV BYTE PTR DS:[EDI],DL ; *pszEDI = chDL

00433E69 |. 47 |INC EDI ; pszEDI++

00433E6A |> 8A46 01 |MOV AL,BYTE PTR DS:[ESI+1] ; char chAL = *(pszESI+1)

00433E6D |. 46 |INC ESI ; pszESI++

00433E6E |. 84C0 |TEST AL,AL

00433E70 |.^ 75 DE \JNZ SHORT 00433E50 ; while(0! = chAL)

00433E72 |> 8D4424 20 LEA EAX,[LOCAL.49]

00433E76 |. C607 00 MOV BYTE PTR DS:[EDI],0 ; LOCAL.49弄成0结尾字符串

00433E79 |. 8D50 01 LEA EDX,[EAX+1] ; 获取LOCAL.49长度，开始

00433E7C |. 8D6424 00 LEA ESP,[LOCAL.57]

00433E80 |> 8A08 /MOV CL,BYTE PTR DS:[EAX]

00433E82 |. 40 |INC EAX

00433E83 |. 84C9 |TEST CL,CL

00433E85 |.^ 75 F9 \JNZ SHORT 00433E80

00433E87 |. 2BC2 SUB EAX,EDX ; 获取LOCAL.49长度，结束，EAX=EAX-EDX

00433E89 |. 83F8 18 CMP EAX,18 ; 名字长度和18=24.比较

00433E8C |. 7D 1E JGE SHORT 00433EAC ; 大于0x18=24.就跳转

00433E8E |. B9 18000000 MOV ECX,18

00433E93 |. 2BC8 SUB ECX,EAX ; ECX=ECX-EAX=24.-NameLength_EAX

00433E95 |. 8D7C04 20 LEA EDI,[EAX+ESP+20]

00433E99 |. 8BC1 MOV EAX,ECX

00433E9B |. C1E9 02 SHR ECX,2

00433E9E |. BE 78F44800 MOV ESI,OFFSET 0048F478 ; ASCII "HKRWQV2958DWNTQRGNSCFSXAZPYK"

00433EA3 |. F3:A5 REP MOVS DWORD PTR ES:[EDI],DWORD PTR DS:[ESI] ; strcat(LOCAL.49, strchr("HKRW...", LOCAL.49[0]))

00433EA5 |. 8BC8 MOV ECX,EAX

00433EA7 |. 83E1 03 AND ECX,00000003

00433EAA |. F3:A4 REP MOVS BYTE PTR ES:[EDI],BYTE PTR DS:[ESI]

00433EAC |> B8 78F44800 MOV EAX,OFFSET 0048F478 ; ASCII "HKRWQV2958DWNTQRGNSCFSXAZPYK"

00433EB1 |. C64424 39 00 MOV BYTE PTR SS:[LOCAL.43+1],0

00433EB6 |. C68424 840000 MOV BYTE PTR SS:[LOCAL.24],0

00433EBE |. 33ED XOR EBP,EBP ; EBP = 0

00433EC0 |. 8D48 01 LEA ECX,[EAX+1] ; 计算"HKRWQV2958DWNTQRGNSCFSXAZPYK"长度

00433EC3 |> 8A10 /MOV DL,BYTE PTR DS:[EAX]

00433EC5 |. 40 |INC EAX

00433EC6 |. 84D2 |TEST DL,DL

00433EC8 |.^ 75 F9 \JNZ SHORT 00433EC3

00433ECA |. 2BC1 SUB EAX,ECX ; 计算"HKRWQV2958DWNTQRGNSCFSXAZPYK"结束

00433ECC |. 894424 10 MOV DWORD PTR SS:[LOCAL.53],EAX ; LOCAL53 = 长度24

00433ED0 |. B8 01000000 MOV EAX,1

00433ED5 |. 2D 78F44800 SUB EAX,OFFSET 0048F478 ; ASCII "HKRWQV2958DWNTQRGNSCFSXAZPYK"

00433EDA |. 894424 18 MOV DWORD PTR SS:[LOCAL.51],EAX ; LOCAL51 = 1 - 0048F478 = FFB70B89

00433EDE |. 33DB XOR EBX,EBX ; EBX = 0

00433EE0 |. B8 78F44800 MOV EAX,OFFSET 0048F478 ; ASCII "HKRWQV2958DWNTQRGNSCFSXAZPYK"

00433EE5 |. 48 DEC EAX ; EAX = 0048F478-1=0048F477

00433EE6 |. 894424 14 MOV DWORD PTR SS:[LOCAL.52],EAX ; LOCAL52 = 0048F477

00433EEA |. 8D4424 20 LEA EAX,[LOCAL.49] ; pszchEAX = pszchOkName

00433EEE |. 48 DEC EAX ; pszchEAX--

00433EEF |. 8DBC24 840000 LEA EDI,[LOCAL.24]

00433EF6 |. 894424 1C MOV DWORD PTR SS:[LOCAL.50],EAX ; pszchLOCAL50 = pszchEAX = pszchOkName - 1

00433EFA |. EB 04 JMP SHORT 00433F00

00433EFC |> 8B4424 1C /MOV EAX,DWORD PTR SS:[LOCAL.50]

00433F00 |> 0FBE4C18 01 |MOVSX ECX,BYTE PTR DS:[EBX+EAX+1] ; pszchECX = pszchOkName[EBX + 1]

00433F05 |. 8D73 01 |LEA ESI,[EBX+1] ; ESI = EBX + 1

00433F08 |. 51 |PUSH ECX

00433F09 |. 68 78F44800 |PUSH OFFSET 0048F478 ; ASCII "HKRWQV2958DWNTQRGNSCFSXAZPYK"

00433F0E |. E8 2DC10300 |CALL 00470040

00433F13 |. 8B5424 20 |MOV EDX,DWORD PTR SS:[LOCAL.51] ; EDX = FFB70B89

00433F17 |. 8BC8 |MOV ECX,EAX

00433F19 |. 03CA |ADD ECX,EDX ; ECX = EAX + FFB70B89

00433F1B |. 8D41 FF |LEA EAX,[ECX-1] ; EAX = EAX + FFB70B89 - 1

00433F1E |. 0FAFC1 |IMUL EAX,ECX ; EAX = (ECX - 1) * ECX = FFB70B88 * ECX

00433F21 |. 03C5 |ADD EAX,EBP ; EAX = EAX + EBP

00433F23 |. 99 |CDQ ; 双字数据扩展为四字类型 EDX = EAX < 80000000 ? 00000000 : FFFFFFFF

00433F24 |. F77C24 18 |IDIV DWORD PTR SS:[LOCAL.53] ; 商=(EAX)=(EDX,EAX)/(LOCAL53)（长度），余数=(EDX)=(EDX,EAX)%(LOCAL53)（长度）

00433F28 |. 83C4 08 |ADD ESP,8

00433F2B |. B9 06000000 |MOV ECX,6

00433F30 |. 42 |INC EDX

00433F31 |. 8BEA |MOV EBP,EDX ; EBP = EDX = ((EAX + (1 - pszHKRWQ) -1) * (EAX + (1 - pszHKRWQ)) + EBP) % strlen(pszHKRWQ)

00433F33 |. 8B5424 14 |MOV EDX,DWORD PTR SS:[LOCAL.52]

00433F37 |. 8A042A |MOV AL,BYTE PTR DS:[EBP+EDX] ; AL = pszHKRWQ[EBP]

00433F3A |. 8807 |MOV BYTE PTR DS:[EDI],AL ; *pszchEDI = AL = pszHKRWQ[EBP]

00433F3C |. 8BC6 |MOV EAX,ESI

00433F3E |. 99 |CDQ

00433F3F |. F7F9 |IDIV ECX

00433F41 |. 47 |INC EDI

00433F42 |. 85D2 |TEST EDX,EDX

00433F44 |. 75 09 |JNZ SHORT 00433F4F

00433F46 |. 83FB 17 |CMP EBX,17 ; EBC 和 17=23.比较

00433F49 |. 7D 04 |JGE SHORT 00433F4F

00433F4B |. C607 2D |MOV BYTE PTR DS:[EDI],2D ; *pszchEDI = '-'

00433F4E |. 47 |INC EDI

00433F4F |> 8BDE |MOV EBX,ESI

00433F51 |. 83FB 18 |CMP EBX,18 ; 和长度18=24.比较

00433F54 |.^ 7C A6 \JL SHORT 00433EFC ; 小于继续循环，否则结束循环

00433F56 |. 8B8424 F00000 MOV EAX,DWORD PTR SS:[ARG.2] ; pszEAX = pszCode

00433F5D |. C607 00 MOV BYTE PTR DS:[EDI],0

00433F60 |. 8DB424 840000 LEA ESI,[LOCAL.24] ; pszESI=pszRealCode; 一段序列，如HSDWQ9-QKFADW-H92C5A-GAGVNK

00433F67 |> 8A10 /MOV DL,BYTE PTR DS:[EAX]

00433F69 |. 8A1E |MOV BL,BYTE PTR DS:[ESI]

00433F6B |. 8ACA |MOV CL,DL

00433F6D |. 3AD3 |CMP DL,BL

00433F6F |. 75 1E |JNE SHORT 00433F8F

00433F71 |. 84C9 |TEST CL,CL

00433F73 |. 74 16 |JZ SHORT 00433F8B

00433F75 |. 8A50 01 |MOV DL,BYTE PTR DS:[EAX+1]

00433F78 |. 8A5E 01 |MOV BL,BYTE PTR DS:[ESI+1]

00433F7B |. 8ACA |MOV CL,DL

00433F7D |. 3AD3 |CMP DL,BL

00433F7F |. 75 0E |JNE SHORT 00433F8F

00433F81 |. 83C0 02 |ADD EAX,2

00433F84 |. 83C6 02 |ADD ESI,2

00433F87 |. 84C9 |TEST CL,CL

00433F89 |.^ 75 DC \JNZ SHORT 00433F67

00433F8B |> 33C0 XOR EAX,EAX

00433F8D |. EB 05 JMP SHORT 00433F94

00433F8F |> 1BC0 SBB EAX,EAX ; Calculates sign(EAX)

00433F91 |. 83D8 FF SBB EAX,-1

00433F94 |> 85C0 TEST EAX,EAX

00433F96 |. 5F POP EDI

00433F97 |. 5E POP ESI

00433F98 |. 5D POP EBP

00433F99 |. 5B POP EBX

00433F9A |. 75 0C JNZ SHORT 00433FA8 ; Code和Func(Name)的值不等，就跳，返回假

00433F9C |. B8 01000000 MOV EAX,1

00433FA1 |. 81C4 D8000000 ADD ESP,0D8

00433FA7 |. C3 RETN

00433FA8 |> 33C0 XOR EAX,EAX

00433FAA |. 81C4 D8000000 ADD ESP,0D8

00433FB0 \. C3 RETN

 

View Code

 

1. 顺便

   1. 程序打开时验证模块代码

刚打开也会断到验证里，看了下堆栈，写在这。

读取注册表注册信息，位置HKEY_LOCAL_MACHINE \Software\gamani\GIFMovieGear\2.0下的两个键SubKey = "RegName3"和SubKey = "RegCode3"，，过期时间来自HKLM\SOFTWARE\Wow6432Node\Loani\MG4\stamp，保存的是秒数。

 Windows Registry Editor Version 5.00


[HKEY_CURRENT_USER\Software\gamani\GIFMovieGear\2.0]
"RegName3"="Fang"
"RegCode3"="HSDWQ9-QKFADW-H92C5A-GAGVNK"

 

CPU Disasm
地址        十六进制数据            指令                                               注释
00434210  /$  81EC D0000000 SUB ESP,0D0                                      ; movgear.00434210(推测 Arg1,Arg2)
00434216  |.  53            PUSH EBX
00434217  |.  56            PUSH ESI
00434218  |.  8B35 04F04700 MOV ESI,DWORD PTR DS:[<&ADVAPI32.RegOpenKeyExA>]
0043421E  |.  8D4424 08     LEA EAX,[LOCAL.51]
00434222  |.  50            PUSH EAX                                         ; /pResult => OFFSET LOCAL.51
00434223  |.  68 19000200   PUSH 20019                                       ; |DesiredAccess = KEY_READ
00434228  |.  6A 00         PUSH 0                                           ; |Reserved = 0
0043422A  |.  68 84E44800   PUSH OFFSET 0048E484                             ; |SubKey = "Software\gamani\GIFMovieGear\2.0"
0043422F  |.  68 02000080   PUSH 80000002                                    ; |hKey = HKEY_LOCAL_MACHINE
00434234  |.  83CB FF       OR EBX,FFFFFFFF                                  ; |
00434237  |.  FFD6          CALL ESI                                         ; \ADVAPI32.RegOpenKeyExA
00434239  |.  85C0          TEST EAX,EAX
0043423B  |.  74 20         JZ SHORT 0043425D
0043423D  |.  8D4C24 08     LEA ECX,[LOCAL.51]
00434241  |.  51            PUSH ECX                                         ; /pResult => OFFSET LOCAL.51
00434242  |.  68 19000200   PUSH 20019                                       ; |DesiredAccess = KEY_READ
00434247  |.  6A 00         PUSH 0                                           ; |Reserved = 0
00434249  |.  68 84E44800   PUSH OFFSET 0048E484                             ; |SubKey = "Software\gamani\GIFMovieGear\2.0"
0043424E  |.  68 01000080   PUSH 80000001                                    ; |hKey = HKEY_CURRENT_USER
00434253  |.  FFD6          CALL ESI                                         ; \ADVAPI32.RegOpenKeyExA
00434255  |.  85C0          TEST EAX,EAX
00434257  |.  0F85 AF000000 JNZ 0043430C
0043425D  |>  8B4C24 08     MOV ECX,DWORD PTR SS:[LOCAL.51]
00434261  |.  8B35 08F04700 MOV ESI,DWORD PTR DS:[<&ADVAPI32.RegQueryValueEx
00434267  |.  8D5424 0C     LEA EDX,[LOCAL.50]
0043426B  |.  52            PUSH EDX                                         ; /pDataLen => OFFSET LOCAL.50
0043426C  |.  8D4424 14     LEA EAX,[LOCAL.49]                               ; |
00434270  |.  50            PUSH EAX                                         ; |pData => OFFSET LOCAL.49
00434271  |.  6A 00         PUSH 0                                           ; |pType = NULL
00434273  |.  6A 00         PUSH 0                                           ; |Reserved = 0
00434275  |.  68 C8F34800   PUSH OFFSET 0048F3C8                             ; |Name = "RegName3"
0043427A  |.  51            PUSH ECX                                         ; |hKey => [LOCAL.51]
0043427B  |.  C74424 24 640 MOV DWORD PTR SS:[LOCAL.50],64                   ; |
00434283  |.  FFD6          CALL ESI                                         ; \ADVAPI32.RegQueryValueExA
00434285  |.  85C0          TEST EAX,EAX
00434287  |.  0F85 7F000000 JNZ 0043430C ;没有找到注册名字信息
0043428D  |.  8B4C24 08     MOV ECX,DWORD PTR SS:[LOCAL.51]
00434291  |.  8D5424 0C     LEA EDX,[LOCAL.50]
00434295  |.  52            PUSH EDX                                         ; /pDataLen => OFFSET LOCAL.50
00434296  |.  8D4424 78     LEA EAX,[LOCAL.24]                               ; |
0043429A  |.  50            PUSH EAX                                         ; |pData => OFFSET LOCAL.24
0043429B  |.  6A 00         PUSH 0                                           ; |pType = NULL
0043429D  |.  6A 00         PUSH 0                                           ; |Reserved = 0
0043429F  |.  68 D4F34800   PUSH OFFSET 0048F3D4                             ; |Name = "RegCode3"
004342A4  |.  51            PUSH ECX                                         ; |hKey => [LOCAL.51]
004342A5  |.  C74424 24 640 MOV DWORD PTR SS:[LOCAL.50],64                   ; |
004342AD  |.  FFD6          CALL ESI                                         ; \ADVAPI32.RegQueryValueExA
004342AF  |.  85C0          TEST EAX,EAX
004342B1  |.  75 59         JNZ SHORT 0043430C ;没有找到注册码信息
004342B3  |.  8D5424 74     LEA EDX,[LOCAL.24]
004342B7  |.  52            PUSH EDX                                         ; /Arg2 => OFFSET LOCAL.24
004342B8  |.  8D4424 14     LEA EAX,[LOCAL.49]                               ; |
004342BC  |.  50            PUSH EAX                                         ; |Arg1 => OFFSET LOCAL.49
004342BD  |.  E8 6EFEFFFF   CALL 00434130                                    ; \movgear.00434130        ;注册验证
004342C2  |.  83C4 08       ADD ESP,8
004342C5  |.  85C0          TEST EAX,EAX
004342C7  |.  74 43         JZ SHORT 0043430C  ;验证失败
004342C9  |.  8B9424 DC0000 MOV EDX,DWORD PTR SS:[ARG.1]
004342D0  |.  85D2          TEST EDX,EDX
004342D2  |.  BB 01000000   MOV EBX,1
004342D7  |.  74 14         JZ SHORT 004342ED
004342D9  |.  8D4C24 10     LEA ECX,[LOCAL.49]
004342DD  |.  8D4424 10     LEA EAX,[LOCAL.49]
004342E1  |.  2BD1          SUB EDX,ECX
004342E3  |>  8A08          /MOV CL,BYTE PTR DS:[EAX]
004342E5  |.  880C02        |MOV BYTE PTR DS:[EAX+EDX],CL
004342E8  |.  40            |INC EAX
004342E9  |.  84C9          |TEST CL,CL
004342EB  |.^ 75 F6         \JNZ SHORT 004342E3
004342ED  |>  8B9424 E00000 MOV EDX,DWORD PTR SS:[ARG.2]
004342F4  |.  85D2          TEST EDX,EDX
004342F6  |.  74 14         JZ SHORT 0043430C
004342F8  |.  8D4C24 74     LEA ECX,[LOCAL.24]
004342FC  |.  8D4424 74     LEA EAX,[LOCAL.24]
00434300  |.  2BD1          SUB EDX,ECX
00434302  |>  8A08          /MOV CL,BYTE PTR DS:[EAX]
00434304  |.  880C02        |MOV BYTE PTR DS:[EAX+EDX],CL
00434307  |.  40            |INC EAX
00434308  |.  84C9          |TEST CL,CL
0043430A  |.^ 75 F6         \JNZ SHORT 00434302
0043430C  |>  8B5424 08     MOV EDX,DWORD PTR SS:[LOCAL.51]
00434310  |.  52            PUSH EDX                                         ; /hKey => [LOCAL.51]
00434311  |.  FF15 18F04700 CALL DWORD PTR DS:[<&ADVAPI32.RegCloseKey>]      ; \ADVAPI32.RegCloseKey
00434317  |.  5E            POP ESI
00434318  |.  8BC3          MOV EAX,EBX
0043431A  |.  5B            POP EBX
0043431B  |.  81C4 D0000000 ADD ESP,0D0
00434321  \.  C3            RETN

View Code

1. REPE CMPS

OD Shift+F1帮助命令，放在一起说明了

Command: REPE CMPS BYTE PTR DS:[ESI],BYTE PTR ES:[EDI]

Hex dump: F3:A6

 

Searches strings for the first non-matching byte.

 

On each iteration, processor compares byte at address [ESI] with the byte at address [EDI] and sets flags C, O, S, Z, A and P

according to the difference [ESI]-[EDI]. The operands themselves are not modified. After the comparison, registers ESI and

EDI are incremented by 1 (if flag D is cleared) or decremented by 1 (if flag D is set). Register ECX is always decremented

by 1. If ECX after decrement is zero, or if compared operands were different (flag Z was cleared), search stops; otherwise,

processor repeats the whole cycle again and again, until count exhausts or non-matching pair will be found.

 

Note that if ECX initially contains zero, this instruction does nothing.

 

REPE ：repeat equal，意思是相等的时候重复，

REPNE repeat not equal，不等的时候重复；

他们每循环一次ECX自动减一。

 

/**正常使用等价于*/

//准备int rECX = 循环次数;        

//指令开始

bool bZF = true;//比较标志位，由指令REPE决定

while (bZF && !rECX)//循环条件，由指令REPE决定bZF，REPNE决定!bZF

{

    bZF = *pbyteESI++ == *pbyteEDI++;// DF位决定++还是--，根据结果设置标志位bZF

    rECX--;//总是--

}

 

字符串比较指令(Compare String Instruction) 该指令是把指针DS:SI和ES:DI所指向字节、字或双字的值相减，并用所得到的差来设置有关的标志位。与此同时，变址寄存器SI和DI也将根据标志位DF的值作相应增减。 指令的格式：CMPS　地址表达式1, 地址表达式2 CMPSB/CMPSW CMPSD　　　　　　;80386+ 受影响的标志位：AF、CF、OF、PF、SF和ZF

1. 注册代码

特别写了个js的代码，涉及中文名字时的gbk 在内存中的摆放。

1. Javascript（在线查看 http://runjs.cn/code/npiizz88）

DOCTYPE html>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>GIFMovieGear KeyGentitle>

<style type="text/css">

p {

font-family: 'Lucida Console', Monaco, monospace;

}

 

button {

width: 150px;

}

 

.bg {

font-style: italic;

color: gray;

}

style>

<script language="javascript" type="text/javascript">

//Fang = HSDWQ9-QKFADW-H92C5A-GAGVNK CB D5 B1 B1|D0 A1 C2 F3| = 苏北小麦

function Generate() {

var inputs = document.getElementsByTagName("input");

//var addrHKRW = 0x48F478, local51 = 1 - 0x48F478, local52 = 0x48F478 - 1;

//local51 = 0xFFB70B89;//0xFFFFFFFF - 0x48F478 + 2

var idx, i, ch;

var name = inputs[0].value, rName = [], resTab = "HKRWQV2958DWNTQRGNSCFSXAZPYK";

var letterTable = "0123456789abcdefghijklmnopqrstuvwxyz"

var ediRCode = [], ebp = 0;//, eax, ecx;

var codeTypes = document.getElementsByName("codetype");

//两种注册码，mg37开头的和不是这开头的短横线分割的

if (!codeTypes[2].checked) {

do {

ediRCode = "mg37";

idx = name.length;

if (codeTypes[0].checked)

ediRCode += 's';

ediRCode += randomLetter(letterTable) + randomLetter(letterTable) + randomLetter(letterTable);

var esi = 3039, ecx = 0, edx;

//每一项0x00 - 0xFF

var codes = GB2312CodeArray(name);

for (i = 0; i < codes.length; i++) {

++ecx;

edx = codes[i];

if (edx > 0x7F)

edx = -(~(edx - 1) & 0xff);

esi += ecx * edx;

if (esi > 6078)

esi -= 6078;

if (ecx > 10)

ecx = 0;

}

ediRCode += esi;

} while (isBlackCode(ediRCode));

} else {

name = name.toUpperCase()

for (i = 0; i < name.length; i++) {

ch = name.charAt(i);

idx = resTab.indexOf(ch);

if (-1 != idx)//有才压入

rName.push(ch);

}

//rName每一个字符都存在于resTab中

rName = rName.join("");

//不足24位补齐

if (rName.length < 24)

rName = rName + resTab.substring(0, 24 - rName.length);

i = 0;

//Code长度为24

while (i < 24) {

idx = resTab.indexOf(rName.charAt(i));

//eax = addrHKRW + idx;

//ecx = (eax + local51) & 0xFFFFFFFF;//rAdd(eax, local51);

//ebp = rAdd(ebp, (ecx - 1)* ecx) % resTab.length;

ebp = (idx * (idx + 1) + ebp) % resTab.length;

ediRCode.push(resTab.charAt(ebp++));

if (!(++i % 6) && i < 24)

ediRCode.push('-');

}

ediRCode = ediRCode.join("");

}

inputs[1].value = ediRCode;

};

 

//模拟32位寄存器值相加

/*function rAdd(v1, v2){

var v = v1 + v2;

if(v > 0xFFFFFFFF)

v &= 0xFFFFFFFF;

return v;

}*/

var blackCodes = ["mvg21951736", "mg374604342", "mg370534035", "mg373465241", "mg37NTi", "mg372503958", "mg379843149", "mg370151347", "mg370353008", "mg372021424", "mg375953248", "mg379223953", "mg373473759", "mg378542544", "mg370473710", "mg37064348", "mg378822469", "mg374394987", "mg371073478", "mg379773651", "mg371895266", "mg373223554", "mg377583454", "mg37644957", "mg370342692", "mg376484039", "mg376871434", "mg370704788", "mg377643863", "mg377753931", "mg379342689", "mg374344777"];

function isBlackCode(code) {

for (i = blackCodes.length; i > 0; i--) {

if (code == blackCodes[--i]) {

return true;

}

}

return false;

}

 

function randomLetter(letterTable) {

return letterTable.charAt(Math.floor(Math.random() * letterTable.length));

}

 

function codeChange() {

var testCode = document.getElementsByName("testCode");

var raw = testCode[0].value;

var charCodes = [];

for (var i = 0; i < raw.length; i++) {

charCodes.push(raw.charCodeAt(i).toString(16));

}

testCode[1].value = charCodes.join();

//

charCodes.length = 0;

var encodeArray = encodeURI(raw).split("%");

for (var i = 1; i < encodeArray.length; i += 3) {

charCodes.push(encodeArray[i] + encodeArray[i + 1] + encodeArray[i + 2]);

}

testCode[2].value = charCodes.join();

charCodes.length = 0;

//

var gb2312Codes = GB2312CodeArray(raw);

for (var i = 0; i < gb2312Codes.length; i += 2) {

charCodes.push(gb2312Codes[i].toString(16) + gb2312Codes[i + 1].toString(16));

}

testCode[3].value = charCodes.join();

}

 

function init() {

Generate();

codeChange();

var c = document.getElementById("c");

var ctx = c.getContext("2d");

c.height = 100;

c.width = 300;

var txts = "CRACK".split("");

var font_size = 12;

var columns = c.width / font_size;

var drops = [];

for (var x = 0; x < columns; x++)

drops[x] = 1;

 

function draw() {

ctx.fillStyle = "rgba(0, 0, 0, 0.05)";

ctx.fillRect(0, 0, c.width, c.height);

ctx.fillStyle = "#0F0";

ctx.font = font_size + "px arial";

for (var i = 0; i < drops.length; i++) {

var text = txts[Math.floor(Math.random() * txts.length)];

ctx.fillText(text, i * font_size, drops[i] * font_size);

if (drops[i] * font_size > c.height || Math.random() > 0.8)

drops[i] = 0;

drops[i]++;

}

}

 

setInterval(draw, 66);

}

 

/** 返回[] http://blog.csdn.net/yimengqiannian/article/details/7016720 */

function GB2312CodeArray(str) {

/*********改自qiushuiwuhen(2002-9-16)********/

var ch, pos, cod, gbkCode = [];

for (var i = 0; i < str.length; i++) {

ch = str.charAt(i);

cod = str.charCodeAt(i);

//汉字字符

if (cod >= 0x4e00 && cod < 0x9FA5) {

if (-1 != (pos = GBhz.indexOf(ch))) {

gbkCode.push(0xB0 + parseInt(pos / 94));

gbkCode.push(0xA1 + pos % 94);

}

} else if ((pos = GBfh.indexOf(ch)) != -1) {

gbkCode.push(0xA1 + parseInt(pos / 94));

gbkCode.push(0xA1 + pos % 94);

}

else gbkCode.push(parseInt(cod));

}

return gbkCode;

}

//采录的只是GB2312编码

var GBfh = "　、。•ˉˇ¨〃々—～‖…''""〔〕〈〉《》「」『』〖〗【】±×÷∶∧∨∑∏∪∩∈∷√⊥∥∠⌒⊙∫∮≡≌≈∽∝≠≮≯≤≥∞∵∴♂♀°′″℃＄¤￠￡‰§№☆★○●◎◇◆□■△▲※→←↑↓〓ⅰⅱⅲⅳⅴⅵⅶⅷⅸⅹ⒈⒉⒊⒋⒌⒍⒎⒏⒐⒑⒒⒓⒔⒕⒖⒗⒘⒙⒚⒛⑴⑵⑶⑷⑸⑹⑺⑻⑼⑽⑾⑿⒀⒁⒂⒃⒄⒅⒆⒇①②③④⑤⑥⑦⑧⑨⑩㈠㈡㈢㈣㈤㈥㈦㈧㈨㈩ⅠⅡⅢⅣⅤⅥⅦⅧⅨⅩⅪⅫ！＂＃￥％＆＇（）＊＋，－．／０１２３４５６７８９：；＜＝＞？＠ＡＢＣＤＥＦＧＨＩＪＫＬＭＮＯＰＱＲＳＴＵＶＷＸＹＺ［＼］＾＿｀ａｂｃｄｅｆｇｈｉｊｋｌｍｎｏｐｑｒｓｔｕｖｗｘｙｚ｛｜｝￣ぁあぃいぅうぇえぉおかがきぎくぐけげこごさざしじすずせぜそぞただちぢっつづてでとどなにぬねのはばぱひびぴふぶぷへべぺほぼぽまみむめもゃやゅゆょよらりるれろゎわゐゑをんァアィイゥウェエォオカガキギクグケゲコゴサザシジスズセゼソゾタダチヂッツヅテデトドナニヌネノハバパヒビピフブプヘベペホボポマミムメモャヤュユョヨラリルレロヮワヰヱヲンヴヵヶΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρστυφχψω︵︶︹︺︿﹀︽︾﹁﹂﹃﹄︻︼︷︸︱︳︴АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдеёжзийклмнопрстуфхцчшщъыьэюяāáǎàēéěèīíǐìōóǒòūúǔùǖǘǚǜüêɑńňɡㄅㄆㄇㄈㄉㄊㄋㄌㄍㄎㄏㄐㄑㄒㄓㄔㄕㄖㄗㄘㄙㄚㄛㄜㄝㄞㄟㄠㄡㄢㄣㄤㄥㄦㄧㄨㄩ─━│┃┄┅┆┇┈┉┊┋┌┍┎┏┐┑┒┓└┕┖┗┘┙┚┛├┝┞┟┠┡┢┣┤┥┦┧┨┩┪┫┬┭┮┯┰┱┲┳┴┵┶┷┸┹┺┻┼┽┾┿╀╁╂╃╄╅╆╇╈╉╊╋";

var GBhz = 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

script>

head>

<body onload="init()">

<canvas id="c">canvas><br>

<p>Name:<input value="Fang" size="36" />p>

<p>Code:<input size="36" readonly="true" />p>

<p>

<input type="radio" name="codetype" checked="checked" />Site License<br>

<input type="radio" name="codetype" />Register Code N<br>

<input type="radio" name="codetype" />Register Code A

p>

<p><button onclick="Generate()">Generatebutton><button onclick="window.close();">Closebutton>p>

<p>

<span class="bg">"HKRWQV2958DWNTQRGNSCFSXAZPYK"span><br>

<span class="bg">[Provided by Fang3s]span>

p>

<table>

<tr><td>Input Here:td><td><input name="testCode" onchange="codeChange()" value="苏北小麦" size="36" />td>tr>

<tr><td>charCodeAt:td><td><input name="testCode" value="" size="36" />td>tr>

<tr><td>encodeURI:td><td><input name="testCode" value="" size="36" />td>tr>

<tr><td>GB2312:td><td><input name="testCode" value="" size="36" />td>tr>

table>

body>

html>

 

View Code

 

1. C++

const char *psBlackCodes[] = { "mvg21951736", "mg374604342", "mg370534035", "mg373465241", "mg37NTi", "mg372503958", "mg379843149",

"mg370151347", "mg370353008", "mg372021424", "mg375953248", "mg379223953", "mg373473759", "mg378542544", "mg370473710", "mg37064348",

"mg378822469", "mg374394987", "mg371073478", "mg379773651", "mg371895266", "mg373223554", "mg377583454", "mg37644957", "mg370342692",

"mg376484039", "mg376871434", "mg370704788", "mg377643863", "mg377753931", "mg379342689", "mg374344777" };

const char* pszRandomCharTable = "0123456789abcdefghijklmnopqrstuvwxyz";

const int lengthOfCharTable = lstrlenA(pszRandomCharTable);

const char *pResourceTable = "HKRWQV2958DWNTQRGNSCFSXAZPYK";

 

 

inline char randomChar(void){

    return pszRandomCharTable[rand() % (lengthOfCharTable + 1 - 0) + 0];

}

 

bool keygen(const char *pszchName, int keygenType, char *pchCodeBuffer, size_t sizeOfBuffer)

{

    if (NULL == pszchName || !*pszchName)

    {

        return false;

    }

 

    if (0 == keygenType)

    {

        if (sizeOfBuffer >= 28)

        {

            char buffer[1024], *pNameCursor, *pOkNameCursor, *pchCodeCursor;

            int length, indexOfTable, ebp, idx;

 

            const int lengthOfTable = lstrlenA(pResourceTable);

            pNameCursor = buffer;

            pOkNameCursor = buffer;

            lstrcpynA(buffer, pszchName, _countof(buffer));

            CharUpperA(buffer);

            //在资源表pResourceTable中的名字才合法

            while (*pNameCursor)

            {

                if (strchr(pResourceTable, *pNameCursor))

                {

                    *pOkNameCursor++ = *pNameCursor;

                }

                pNameCursor++;

            }

            *pOkNameCursor = '\0';

            length = lstrlenA(buffer);

            //名字不足24位补齐

            if (length < 24){

                lstrcpynA(buffer, pResourceTable, 25 - length);//'\0'算在第三个参数长度

            }

            //buffer全是pResourceTable里的字符, 长度为24

            ebp = 0;

            idx = 0;

            pchCodeCursor = pchCodeBuffer;

            while (idx < 24)

            {

                indexOfTable = strchr(pResourceTable, buffer[idx]) - pResourceTable;

                ebp = (indexOfTable * (indexOfTable + 1) + ebp) % lengthOfTable;

                *pchCodeCursor++ = pResourceTable[ebp++];

                if (!(++idx % 6) && idx < 24)

                    *pchCodeCursor++ = '-';

            }

            *pchCodeCursor = '\0';

        }

        else

            return false;

    }

    else{

        //

        if (sizeOfBuffer >= 4 + 1 + 3 + 10){

            char *pchCodeAppend, *pNameCursor, buffer[1024];

            int esi = 3039, ecx = 0;

            srand((unsigned int)time(0));

            pchCodeBuffer[0] = 'm';

            pchCodeBuffer[1] = 'g';

            pchCodeBuffer[2] = '3';

            pchCodeBuffer[3] = '7';

            pchCodeBuffer[5] = randomChar();

            pchCodeBuffer[6] = randomChar();

            if (keygenType == 1){

                pchCodeBuffer[4] = 's';

                pchCodeBuffer[7] = randomChar();

                pchCodeAppend = pchCodeBuffer+8;

            }

            else{

                pchCodeBuffer[4] = randomChar();

                pchCodeAppend = pchCodeBuffer + 7;

            }

            pNameCursor = const_cast<char *>(pszchName);

            while (*pNameCursor)

            {

                ++ecx;

                esi += ecx * *pNameCursor++;

                if (esi > 6078)

                    esi -= 6078;

                if (ecx > 10)

                    ecx = 0;

            }

            _itoa_s(esi, buffer, 10);

            lstrcpynA(pchCodeAppend, buffer, sizeOfBuffer - (pchCodeBuffer - pchCodeAppend));

        }

        else{

            return false;

        }

    }

    return true;

}

 

 

int _tmain(int argc, _TCHAR* argv[])

{

    char name[1024], code[1024] = {0};

    while (true){

        printf("Input Name :\t");

        lstrcpynA(name, "苏北小麦", _countof(name));

        scanf_s("%s", name);

        printf("%s\n", name);

        keygen(name, 0, code, _countof(code));

        printf("Site License :\t\t%s\n", code);

        keygen(name, 1, code, _countof(code));

        printf("Register Code N :\t%s\n", code);

        keygen(name, 2, code, _countof(code));

        printf("Register Code A :\t%s\n", code);

    }

    //getchar();

    return 0;

}

 

View Code

 

 

如果dump代码，怎么搞都没搞成，不用ebp的。。

//see http://msdn.microsoft.com/zh-cn/library/chh3fb0k(v=vs.80).aspx http://msdn.microsoft.com/zh-cn/library/2kxx5t2c(VS.80).aspx

//#pragma optimize( "y", off ) // 对下面的代码使用 /Oy 优化 Generate frame pointers on the program stack.

int keygen_dump(const char *arg_0, const char *arg_4){

    //框架指针寄存器"ebp"被内联程序集代码修改

 

    _asm{

        mov ebp, arg_4    //就乱了。。。。

        cmp byte ptr[ebp + 0], 6Dh

        jnz loc_4341EF

        cmp byte ptr[ebp + 1], 67h

        jnz loc_4341EF

        cmp byte ptr[ebp + 2], 33h

        jnz loc_4341EF

        cmp byte ptr[ebp + 3], 37h

        jnz loc_4341EF

        xor ebx, ebx

 

    loc_434162 :

        mov edi, psBlackCodes

        mov eax, edi

        lea edx, [eax + 1]

        lea ecx, [ecx + 0]

 

    loc_434170 :

             mov cl, [eax]

             inc eax

             test cl, cl

             jnz short loc_434170

             sub eax, edx

             mov ecx, eax

             mov esi, ebp

             xor eax, eax

             repe cmpsb

             jz short loc_4341E8

             add ebx, 4

             cmp ebx, 80h

             jb short loc_434162

             cmp byte ptr[ebp + 4], 73h

             jnz short loc_434195

             inc ebp

 

         loc_434195 :

    lea ecx, [ebp + 7]

        push ecx

        push    ecx

        call codekeygen //----------------------------------

        pop ecx

        pop ecx

        push ecx

        call atol

        mov ebx, arg_0

        mov dl, [ebx]

        add esp, 4

        xor ecx, ecx

        test dl, dl

        mov edi, ebx

        mov esi, 0BDFh

        jz short loc_4341DA

 

    loc_4341B4 :

    movsx edx, dl

        inc ecx

        imul edx, ecx

        add esi, edx

        cmp esi, 17BEh

        jle short loc_4341CB

        sub esi, 17BEh

 

    loc_4341CB:

    cmp ecx, 0Ah

        jle short loc_4341D2

        xor ecx, ecx

 

    loc_4341D2 :

    mov dl, [edi + 1]

        inc edi

        test dl, dl

        jnz short loc_4341B4

 

    loc_4341DA :

    push esi

 

    cmp esi, eax

 

        jnz short loc_4341F3

        pop ebp

        mov eax, 1

        pop ebx

        retn//移除pop esi和pop ebp

 

 

    loc_4341E8 :

    pop edi

 

        xor eax, eax

        pop ebx

        retn //移除pop esi和pop ebp

 

 

    loc_4341EF :

 

    mov ebx, arg_0

 

    loc_4341F3 :

    push ebp

        push ebx

        call codekeygen //移除两参数

             pop ebp

             pop ebx

             retn//移除pop esi和pop ebp

}

}

//#pragma optimize("", on) // 恢复到编译器 /O 选项指定的优化

View Code

 

 

1. 汇编（跃然纸上）

注册时让注册码跃然纸上，这招貌似叫内嵌补丁。

个人觉得算是个费时的活儿，又写汇编，又要了解PE等，知识点散。而且只适用于程序把注册码计算出来和输入的Code直接比较，即Code == Func(Name)???型。避免了写注册机算法等等，如果很复杂这很适合，当然也可以远程调用。

为了便于好看，有大量截图，也是用心写的证明，就想发点有价值的东西，不然不好。

1. 第一处改写。

主要获取Code窗口句柄HWND和保存，如果是局部变量就好了，但是我没看看它是不是，直接保存到代码区的。

修改前两处

修改前后

1. 目标代码。

来到我们预定的空隙处，这里也是准备些代码的地方，这里call api暂时是拷贝的，后面修改。

设置访问方式

修改访问后，再执行此条指令，如下图我们看到地址0x0047EA94值变了，共4字节。注意这里是临时修改，要实际修改，还要保存。君子善假于物也。使用论坛工具LordPE。

继续执行到原来PUSH EAX后的指令CALL EBX时，即此处的寄存器状态和之前未修改的图是一致的。这里要说下，原来未修改的截图还未执行PUSH EAX，所以原ESP比这里的大4，截得不好。

1. 第二处改写

来到注册码已经出来的地方，然后我们想在界面Code编辑框里打印显示出来。

说明下，由于ESP寻找局部变量，所以只要找到ESP+84（十六进制）处看看就可，右下角堆栈窗口就可以看；或者直接点击代码行右键-数据窗口中跟随-内存地址，即可左小角查看。

这条指令大于5字节，直接线程替换为我们的跳转JMP 0047EA9E，剩余的90填充然后F7或F8跟随进去。

 

当我们获取原来LEA ESI, [LOCAL.24]里的[LOCAL.24]=[ESP + 84]时，堆栈和原来不一样的差了8.*4 = 32. = 20h，从右下角的图也可以看出，当时记录的ESP和此时ESP相差$-20。所以取值时多加了这个差值。

 

 

 

我们走一步，通过赋值给ESI看下这时的值，OllyDbg会提示的。

 

再看看第一个入参，[Alt+W]打开当前可预见的窗口。

 

1. 这里call API有一定讲究。

导入API

首先看它导入了没有,OK。

OllyDbg的查找所有模块中的名称（Ctrl+N）

 

call地址计算

目标进程右键-载入PE编辑器-目录-输入表一行左边省略号按钮上面ListView点选USER32.dll-下面输入SetWindowTextA搜索自动定位。

注意未勾选总是查看FisrtThunk时值时，ThunkRVA按照函数列表计算的值是不一样的。

未勾选时，第一个函数SystemParametersInfoA的ThunkRVA是0008BCC8和USER32.dll的OrigianlFirstThunk一样的，以后相差+4。

勾选后，地址为0007F30C，记下它，后面会眼熟的。

我们来拿个现成例子看看地址间关系。

回到OllyDbg，在程序模块movgear.exe，右键查找-所有模块间调用

搜索System看到

点击进入

我们看看SystemParametersInfoA的调用方式不是CALL xx，而是CALL DWORD PTR DS:[xx]，即call机器码不一样。

再看看地址关系，可以看出CALL DWORD PTR DS:[xx]的xx是0047F30C，后4位是不是很眼熟。是的，和前面看到的ThunkRVA = 0047F30C，是一致的，只是多了个400000，其实40万（十六进制）就是我们在前面一起看到的，基本PE头信息里的镜像基址（BaseImage）400000。

接下来看我们的SetWindowTextA，以此类推，调用写法，400000 + 0007F448 = 0047F448 ，48F44700，CALL DWORD PTR DS:[ 0047F448]，OllyDbg自动解析为对应符号。

1. 修改的代码

CPU Disasm
地址        十六进制数据            指令                                       注释
00434531     /E9 68A50400   JMP 0047EA9E

CPU Disasm
地址        十六进制数据            指令                                       注释
00433F60     /E9 39AB0400   JMP 0047EA9E

CPU Disasm
地址        十六进制数据            指令                                       注释
0047EA97      00            DB 00                                    ; 原来.text区是不可写，这也证明了足够
0047EA98      00            DB 00                                    ; 安全性，而且原是0映射后还是0，
0047EA99      00            DB 00                                    ; 不用搞检测看这段是否可能被修改。
0047EA9A      00            DB 00                                    ; 一般程序也不会调用API来改吧，又没壳。
0047EA9B      00            DB 00
0047EA9C      00            DB 00
0047EA9D      00            DB 00
0047EA9E  />  60            PUSHAD                                   ; /Arg1_4, >>保存8大寄存器状态，也可仅push使用的
0047EA9F  |.  E8 00000000   CALL 0047EAA4                            ; \movgear.0047EAA4, 随意搞吧，不管你怎么使用寄存器，只要栈操作平衡。
0047EAA4  |$  59            POP ECX                                  ; 获取EIP，即ECX = EIP = 0047EAA4
0047EAA5  |.  8B51 F0       MOV EDX,DWORD PTR DS:[ECX-10]            ; 这里把.text区地址0047EA94上DWORD大小给了EDX
0047EAA8  |.  85D2          TEST EDX,EDX
0047EAAA  |.  75 12         JNZ SHORT 0047EABE
0047EAAC  |.  8941 F0       MOV DWORD PTR DS:[ECX-10],EAX
0047EAAF  |.  61            POPAD                                    ; <<恢复8大寄存器状态
0047EAB0  |.  FFD3          CALL EBX                                 ; >>恢复原指令的调用流程
0047EAB2  |.  8D8CE4 C40000 LEA ECX,[LOCAL.24]                       ; <<恢复原指令的调用流程
0047EAB9  |.^ E9 7C5AFBFF   JMP 0043453A                             ; 回去并执行接下来的指令
0047EABE  |>  C741 F0 00000 MOV DWORD PTR DS:[ECX-10],0
0047EAC5  |.  8DB4E4 A40000 LEA ESI,[LOCAL.24]                       ; 这里使用ESP的局部变量要注意。
0047EACC  |.  56            PUSH ESI                                 ; /Text
0047EACD  |.  52            PUSH EDX                                 ; |hWnd
0047EACE  |.  FF15 48F44700 CALL DWORD PTR DS:[<&USER32.SetWindowTex ; \USER32.SetWindowTextA, call xx 需要计算xx = ImageBase + ThunkRVAOfAPI
0047EAD4  |.  61            POPAD                                    ; <<恢复8大寄存器状态
0047EAD5  |.  8DB4E4 840000 LEA ESI,[LOCAL.24]                       ; >><<恢复原指令的调用流程
0047EADC  \.^ E9 8654FBFF   JMP 00433F67                             ; 回去并执行接下来的指令
0047EAE1      E8 6B25EB74   CALL SetWindowTextA                        ;直接修改为CALL SetWindowTextA，错，仅临时偏移对

1. 最后看下效果图：

在弹窗前注册码已经写入了Code编辑框内了。。。

 

1. 总结

LoadPE使用，熟练OllyDbg，Call API

1. 附件

 

CPU Disasm

地址        十六进制数据            指令                                       注释

00434531     /E9 68A50400   JMP0047EA9E

CPU Disasm

地址        十六进制数据            指令                                       注释

00433F60     /E9 39AB0400   JMP0047EA9E

 

CPU Disasm

地址        十六进制数据            指令                                       注释

0047EA97      00            DB 00                                    ; 原来.text区是不可写，这也证明了足够

0047EA98      00            DB 00                                    ; 安全性，而且原是0映射后还是0，

0047EA99      00            DB 00                                    ; 不用搞检测看这段是否可能被修改。

0047EA9A      00            DB 00                                    ; 一般程序也不会调用API来改吧，又没壳。

0047EA9B      00            DB 00

0047EA9C      00            DB 00

0047EA9D      00            DB 00

0047EA9E  />  60            PUSHAD                                   ; /Arg1_4, >>保存8大寄存器状态，也可仅push使用的

0047EA9F  |.  E8 00000000   CALL0047EAA4                            ; \movgear.0047EAA4, 随意搞吧，不管你怎么使用寄存器，只要栈操作平衡。

0047EAA4  |$  59            POP ECX                                  ; 获取EIP，即ECX = EIP = 0047EAA4

0047EAA5  |.  8B51 F0       MOV EDX,DWORD PTR DS:[ECX-10]            ; 这里把.text区地址0047EA94上DWORD大小给了EDX

0047EAA8  |.  85D2          TEST EDX,EDX

0047EAAA  |.  7512         JNZ SHORT 0047EABE

0047EAAC  |.  8941 F0       MOV DWORD PTR DS:[ECX-10],EAX

0047EAAF  |.  61            POPAD                                    ; <<恢复8大寄存器状态

0047EAB0  |.  FFD3          CALL EBX                                 ; >>恢复原指令的调用流程

0047EAB2  |.  8D8CE4 C40000 LEA ECX,[LOCAL.24]                       ; <<恢复原指令的调用流程

0047EAB9  |.^ E9 7C5AFBFF   JMP0043453A                             ; 回去并执行接下来的指令

0047EABE  |>  C741 F0 00000MOV DWORD PTR DS:[ECX-10],0

0047EAC5  |.  8DB4E4 A40000 LEA ESI,[LOCAL.24]                       ; 这里使用ESP的局部变量要注意。

0047EACC  |.  56            PUSH ESI                                 ; /Text

0047EACD  |.  52            PUSH EDX                                 ; |hWnd

0047EACE  |.  FF15 48F44700 CALL DWORD PTR DS:[<&USER32.SetWindowTex ; \USER32.SetWindowTextA, call xx 需要计算xx = ImageBase + ThunkRVAOfAPI

0047EAD4  |.  61            POPAD                                    ; <<恢复8大寄存器状态

0047EAD5  |.  8DB4E4 840000LEA ESI,[LOCAL.24]                       ; >><<恢复原指令的调用流程

0047EADC  \.^ E9 8654FBFF   JMP00433F67                             ; 回去并执行接下来的指令

0047EAE1      E8 6B25EB74   CALL SetWindowTextA                        ;直接修改为CALL SetWindowTextA，错，仅临时偏移对

 

1. 教训特别修改（已测）

没有测试打开验证，由于只走验证，代码区本来想保存HWND一直为0，走了保存窗口句柄的，导致CALL失败。需要拆分为两个独立的过程比较好，如下，修改第二个验证跳转和内嵌代码。丑大了，没有思考过只走验证和没有再次打开测试。。。

地址 十六进制数据 指令 注释

00433F60 E9 59AB0400 JMP 0047EABE

 

CPU Disasm

地址 十六进制数据 指令 注释

0047EA9E \60 PUSHAD

0047EA9F E8 00000000 CALL 0047EAA4

0047EAA4 59 POP ECX ; movgear_crack.0047EAA4(推测 Arg1,Arg2,Arg3,Arg4)

0047EAA5 8B51 F0 MOV EDX,DWORD PTR DS:[ECX-10]

0047EAA8 85D2 TEST EDX,EDX

0047EAAA 75 03 JNZ SHORT 0047EAAF

0047EAAC 8941 F0 MOV DWORD PTR DS:[ECX-10],EAX

0047EAAF 61 POPAD

0047EAB0 FFD3 CALL EBX

0047EAB2 8D8CE4 C40000 LEA ECX,[ESP+0C4]

0047EAB9 ^ E9 7C5AFBFF JMP 0043453A

0047EABE \60 PUSHAD

0047EABF E8 00000000 CALL 0047EAC4

0047EAC4 59 POP ECX

0047EAC5 8B51 F0 MOV EDX,DWORD PTR DS:[ECX-10]

0047EAC8 85D2 TEST EDX,EDX

0047EACA 74 16 JE SHORT 0047EAE2

0047EACC C741 C8 00000 MOV DWORD PTR DS:[ECX-38],0

0047EAD3 8DB4E4 A40000 LEA ESI,[ESP+0A4]

0047EADA 56 PUSH ESI

0047EADB 52 PUSH EDX

0047EADC FF15 48F44700 CALL DWORD PTR DS:[<&USER32.SetWindowTex

0047EAE2 61 POPAD

0047EAE3 8DB4E4 840000 LEA ESI,[ESP+84]

0047EAEA ^ E9 7854FBFF JMP 00433F67

0047EAEF E8 5D25EB74 CALL SetWindowTextA

 

View Code

 

插件编写比较方便

 

<0047EA9E>

 

@L00000001:

PUSHAD

CALL @L00000002

 

@L00000002:

POP ECX

MOV EDX,DWORD PTR DS:[ECX-10]

TEST EDX,EDX

JNE SHORT @L00000003

MOV DWORD PTR DS:[ECX-10],EAX

 

@L00000003:

POPAD

CALL EBX

LEA ECX,[ESP+0C4]

JMP 0043453A

PUSHAD

CALL @L00000004

 

@L00000004:

POP ECX

MOV EDX,DWORD PTR DS:[ECX-10]

TEST EDX,EDX

JE SHORT @L00000005

MOV DWORD PTR DS:[ECX-38],0

LEA ESI,[ESP+0A4]

PUSH ESI

PUSH EDX

CALL DWORD PTR DS:[47F448]

 

@L00000005:

POPAD

LEA ESI,[ESP+84]

JMP 00433F67

CALL 75331051

 

 

转载于:https://www.cnblogs.com/Fang3s/p/3961935.html