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snagItV 7.01 的破解教程全过程
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发表于: 2004-10-31 13:09
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【破解作者】 ftts[BCG]
【使用工具】 ollydbg
【破解平台】 Win2003
【软件名称】 snagIt32V 7.01
【下载地址】 来自网络，自己去找
【软件简介】 一个很好屏幕捕捉软件，
【软件大小】 8.7M
【加壳方式】 无壳
【破解声明】 我是一只小菜鸟，偶得一点心得，愿与大家分享：
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【破解内容】
输入用户名：ftts[BCG]
注册码：AD28DC019012A94578
AD28DC01 9012 A9 4578 这里是要分开来看的 AD28DC01 是用来比较的 9012 A9 4578 是用来计算密码表的
计算注册码的入口，用查ascll 查不到的， 可以用 bpx getwindowtexta 将它断下来
－－－－－－－－－－－－－－－－－－－－－从下面这段代码开始吧！
00544BFA |> \53 push ebx
00544BFB |. 57 push edi
00544BFC |. 8B7C24 18 mov edi,dword ptr ss:[esp+18]
00544C00 |. 8BCF mov ecx,edi
00544C02 |. FF15 B0E45500 call dword ptr ds:[<&MFC71.#6180>] ; MFC71.7C18A010
00544C08 |. 8BCF mov ecx,edi
00544C0A |. FF15 ACF15500 call dword ptr ds:[<&MFC71.#2902>] ; MFC71.7C146AB0
00544C10 |. 83F8 0E cmp eax,0E 比较注册码是不是大于，14位
00544C13 |. 0F8C E6000000 jl SnagIt32.00544CFF－－>跳向失败了
00544C19 |. 8BCF mov ecx,edi
00544C1B |. FF15 2CF35500 call dword ptr ds:[<&MFC71.#876>] ; MFC71.7C158BCD
00544C21 |. 68 783B5900 push SnagIt32.00593B78 ; ASCII "0123456789ABCDEF-"
00544C26 |. 50 push eax
00544C27 |. FF15 40F45500 call dword ptr ds:[<&MSVCR71._mbsspn>] ; MSVCR71._mbsspn
00544C2D |. 83C4 08 add esp,8
00544C30 |. 8BCF mov ecx,edi
00544C32 |. 8BD8 mov ebx,eax
00544C34 |. FF15 ACF15500 call dword ptr ds:[<&MFC71.#2902>] ; MFC71.7C146AB0
00544C3A |. 3BD8 cmp ebx,eax 这里注册码不是18位就会出错了 ，这里的两组数是不会相等的，注册码
是18位的话，两组数都会是0x12
00544C3C 0F85 BD000000 jnz SnagIt32.00544CFF ; 这里是不能跳的，跳的话注册失败了喔！
00544C42 |. 68 70185600 push SnagIt32.00561870
00544C47 |. 68 64705600 push SnagIt32.00567064
00544C4C |. 8BCF mov ecx,edi
00544C4E |. FF15 C0E45500 call dword ptr ds:[<&MFC71.#5491>] ; MFC71.7C189DD6
00544C54 |. 8B1E mov ebx,dword ptr ds:[esi]
00544C56 |. 8BCF mov ecx,edi
00544C58 |. FF15 2CF35500 call dword ptr ds:[<&MFC71.#876>] ; MFC71.7C158BCD
00544C5E |. 50 push eax
00544C5F |. 8BCD mov ecx,ebp
00544C61 |. FF15 2CF35500 call dword ptr ds:[<&MFC71.#876>] ; MFC71.7C158BCD
00544C67 |. 50 push eax
00544C68 |. 8BCE mov ecx,esi
00544C6A |. FF53 1C call dword ptr ds:[ebx+1C] ; 这个call是关键算法了,是动态的 跟进去
00544C6D |. 8BD8 mov ebx,eax
00544C6F |. 80FB 01 cmp bl,1
00544C72 75 53 jnz short SnagIt32.00544CC7 ; 这里不能跳 ，跳就注册失败了
00544C74 |. 8BCF mov ecx,edi
00544C76 |. C746 30 01000000 mov dword ptr ds:[esi+30],1 ----->这里下去就是保存你的注册信息了
00544C7D |. C786 C8000000 00000>mov dword ptr ds:[esi+C8],0
00544C87 |. FF15 2CF35500 call dword ptr ds:[<&MFC71.#876>] ; MFC71.7C158BCD
00544C8D |. 50 push eax ; /Arg2
00544C8E |. 68 B02A5700 push SnagIt32.00572AB0 ; |Arg1 = 00572AB0 ASCII
"RegistrationKey"
00544C93 |. 8BCE mov ecx,esi ; |
00544C95 |. E8 66F5FFFF call SnagIt32.00544200 ; \SnagIt32.00544200
00544C9A |. 8BCD mov ecx,ebp
00544C9C |. FF15 2CF35500 call dword ptr ds:[<&MFC71.#876>] ; MFC71.7C158BCD
00544CA2 |. 50 push eax ; /Arg2
00544CA3 |. 68 D02A5700 push SnagIt32.00572AD0 ; |Arg1 = 00572AD0 ASCII "RegisteredTo"
00544CA8 |. 8BCE mov ecx,esi ; |
00544CAA |. E8 51F5FFFF call SnagIt32.00544200 ; \SnagIt32.00544200
00544CAF |. 8B4424 14 mov eax,dword ptr ss:[esp+14]
00544CB3 |. 57 push edi
00544CB4 |. 55 push ebp
00544CB5 |. 50 push eax
00544CB6 |. 8BCE mov ecx,esi
00544CB8 |. E8 23F8FFFF call SnagIt32.005444E0
00544CBD |. 5F pop edi
00544CBE |. 66:8BC3 mov ax,bx
00544CC1 |. 5B pop ebx
00544CC2 |. 5E pop esi
00544CC3 |. 5D pop ebp
00544CC4 |. C2 0C00 retn 0C
------------------------------------------------------------------------- 注册算法跟进去
004BBD7C . B8 D3515500 mov eax,SnagIt32.005551D3
004BBD81 . E8 7ADE0800 call SnagIt32.00549C00
004BBD86 . 83EC 58 sub esp,58
004BBD89 . 53 push ebx
004BBD8A . FF75 0C push dword ptr ss:[ebp+C]
004BBD8D . 894D E4 mov dword ptr ss:[ebp-1C],ecx
004BBD90 . 33DB xor ebx,ebx
004BBD92 . 8D4D 0C lea ecx,dword ptr ss:[ebp+C]
004BBD95 . 895D EC mov dword ptr ss:[ebp-14],ebx
004BBD98 . C745 E0 01000000 mov dword ptr ss:[ebp-20],1
004BBD9F . C645 F3 0A mov byte ptr ss:[ebp-D],0A
004BBDA3 . 885D F2 mov byte ptr ss:[ebp-E],bl
004BBDA6 . FF15 28F35500 call dword ptr ds:[<&MFC71.#304>] ; MFC71.7C16A59C
004BBDAC . 8D4D 0C lea ecx,dword ptr ss:[ebp+C]
004BBDAF . 895D FC mov dword ptr ss:[ebp-4],ebx
004BBDB2 . FF15 ACF15500 call dword ptr ds:[<&MFC71.#2902>] ; MFC71.7C146AB0
004BBDB8 . 83F8 0E cmp eax,0E－－－－－－－－－－－>这里可能是假像吧！
004BBDBB 74 17 je short SnagIt32.004BBDD4
004BBDBD . 8D4D 0C lea ecx,dword ptr ss:[ebp+C]
004BBDC0 . FF15 ACF15500 call dword ptr ds:[<&MFC71.#2902>] ; MFC71.7C146AB0
004BBDC6 . 83F8 12 cmp eax,12 ; 呵呵！这里的注册码要18位
004BBDC9 . 74 09 je short SnagIt32.004BBDD4
004BBDCB . C645 F3 0C mov byte ptr ss:[ebp-D],0C
004BBDCF . E9 89010000 jmp SnagIt32.004BBF5D ; 到这里就失败了，所以上面要跳
004BBDD4 > 56 push esi
004BBDD5 . 57 push edi
004BBDD6 . 6A 02 push 2
004BBDD8 . 6A 0C push 0C
004BBDDA . 8D45 E8 lea eax,dword ptr ss:[ebp-18]
004BBDDD . 50 push eax
004BBDDE . 8D4D 0C lea ecx,dword ptr ss:[ebp+C]
004BBDE1 . FF15 40E75500 call dword ptr ds:[<&MFC71.#4109>] ; MFC71.7C188D88
004BBDE7 . 6A 10 push 10
004BBDE9 . 53 push ebx
004BBDEA . 8BC8 mov ecx,eax
004BBDEC . FF15 2CF35500 call dword ptr ds:[<&MFC71.#876>] ; MFC71.7C158BCD
004BBDF2 . 8B35 64F55500 mov esi,dword ptr ds:[<&MSVCR71.strtoul>>; |MSVCR71.strtoul
004BBDF8 . 50 push eax ; |s
004BBDF9 . FFD6 call esi ; \strtoul
004BBDFB . 83C4 0C add esp,0C
004BBDFE . 8D4D E8 lea ecx,dword ptr ss:[ebp-18]
004BBE01 . 8BF8 mov edi,eax
004BBE03 . FF15 34F35500 call dword ptr ds:[<&MFC71.#578>] ; MFC71.7C1771B1
004BBE09 . 66:83FF 41 cmp di,41
004BBE0D 0F82 44010000 jb SnagIt32.004BBF57 ; 跳就失败
004BBE13 . 81C7 BFFF0000 add edi,0FFBF ; 就是这里了，99是不行的了 用A9可以
004BBE19 . 66:83FF 50 cmp di,50
004BBE1D . 72 74 jb short SnagIt32.004BBE93 我估记这个A9是与版本信息有关
004BBE1F . 8D4D 0C lea ecx,dword ptr ss:[ebp+C] 用我提供的注册码，显示版本信息是6.8的
004BBE22 . FF15 ACF15500 call dword ptr ds:[<&MFC71.#2902>] ; MFC71.7C146AB0
004BBE28 . 83F8 12 cmp eax,12
004BBE2B . 0F85 86000000 jnz SnagIt32.004BBEB7
004BBE31 . 6A 04 push 4
004BBE33 . 8D45 08 lea eax,dword ptr ss:[ebp+8]
004BBE36 . 50 push eax
004BBE37 . 8D4D 0C lea ecx,dword ptr ss:[ebp+C]
004BBE3A . FF15 1CE75500 call dword ptr ds:[<&MFC71.#5563>] ; MFC71.7C188DED
004BBE40 . 6A 10 push 10
004BBE42 . 53 push ebx
004BBE43 . 8BC8 mov ecx,eax
004BBE45 . FF15 2CF35500 call dword ptr ds:[<&MFC71.#876>] ; MFC71.7C158BCD
004BBE4B . 50 push eax
004BBE4C . FFD6 call esi
004BBE4E . 83C4 0C add esp,0C
004BBE51 . 8D4D 08 lea ecx,dword ptr ss:[ebp+8]
004BBE54 . 8945 EC mov dword ptr ss:[ebp-14],eax ; ss:[12dde4]=4578
004BBE57 . FF15 34F35500 call dword ptr ds:[<&MFC71.#578>] ; MFC71.7C1771B1
004BBE5D . 8D4D 0C lea ecx,dword ptr ss:[ebp+C]
004BBE60 . FF15 ACF15500 call dword ptr ds:[<&MFC71.#2902>] ; MFC71.7C146AB0
004BBE66 . 83E8 04 sub eax,4
004BBE69 . 50 push eax
004BBE6A . 8D45 08 lea eax,dword ptr ss:[ebp+8]
004BBE6D . 50 push eax
004BBE6E . 8D4D 0C lea ecx,dword ptr ss:[ebp+C]
004BBE71 . FF15 B4E45500 call dword ptr ds:[<&MFC71.#3997>] ; MFC71.7C188E36
004BBE77 . 50 push eax
004BBE78 . 8D4D 0C lea ecx,dword ptr ss:[ebp+C]
004BBE7B . C645 FC 01 mov byte ptr ss:[ebp-4],1
004BBE7F . FF15 90E45500 call dword ptr ds:[<&MFC71.#781>] ; MFC71.7C150F15
004BBE85 . 8D4D 08 lea ecx,dword ptr ss:[ebp+8]
004BBE88 . 885D FC mov byte ptr ss:[ebp-4],bl
004BBE8B . FF15 34F35500 call dword ptr ds:[<&MFC71.#578>] ; MFC71.7C1771B1
004BBE91 . EB 24 jmp short SnagIt32.004BBEB7
004BBE93 > FF75 08 push dword ptr ss:[ebp+8] ; /s
004BBE96 . FF15 54F45500 call dword ptr ds:[<&MSVCR71._strdup>] ; \_strdup
004BBE9C . 8BF0 mov esi,eax
004BBE9E . 3BF3 cmp esi,ebx
004BBEA0 . 59 pop ecx
004BBEA1 . 74 14 je short SnagIt32.004BBEB7
004BBEA3 . 8B4D E4 mov ecx,dword ptr ss:[ebp-1C]
004BBEA6 . 56 push esi ; /Arg1
004BBEA7 . E8 D4820800 call SnagIt32.00544180 ; \SnagIt32.00544180
004BBEAC . 56 push esi ; /block
004BBEAD . 8945 EC mov dword ptr ss:[ebp-14],eax ; |
004BBEB0 . FF15 DCF45500 call dword ptr ds:[<&MSVCR71.free>] ; \free
004BBEB6 . 59 pop ecx
004BBEB7 > 66:395D EC cmp word ptr ss:[ebp-14],bx
004BBEBB . 0F84 9A000000 je SnagIt32.004BBF5B ; 这里是不能跳的
004BBEC1 . 6A 0F push 0F ; /n = F (15.)
004BBEC3 . 8D45 D0 lea eax,dword ptr ss:[ebp-30] ; |
004BBEC6 . 53 push ebx ; |c
004BBEC7 . 50 push eax ; |s
004BBEC8 . E8 97DD0800 call <jmp.&MSVCR71.memset> ; \memset
004BBECD . 83C4 0C add esp,0C
004BBED0 . 6A 0E push 0E
004BBED2 . 6A 0E push 0E
004BBED4 . 8D4D 0C lea ecx,dword ptr ss:[ebp+C]
004BBED7 . FF15 F4E45500 call dword ptr ds:[<&MFC71.#2468>] ; MFC71.7C15102A
004BBEDD . 50 push eax ; |src
004BBEDE . 8D45 D0 lea eax,dword ptr ss:[ebp-30] ; |
004BBEE1 . 50 push eax ; |dest
004BBEE2 . E8 77DD0800 call <jmp.&MSVCR71.memcpy> ; \memcpy
004BBEE7 . 83C4 0C add esp,0C
004BBEEA . 6A FF push -1
004BBEEC . 8D4D 0C lea ecx,dword ptr ss:[ebp+C]
004BBEEF . FF15 E8E45500 call dword ptr ds:[<&MFC71.#5403>] ; MFC71.7C16A479
004BBEF5 . 8D45 9C lea eax,dword ptr ss:[ebp-64]
004BBEF8 . 50 push eax
004BBEF9 . E8 B2970800 call SnagIt32.005456B0
004BBEFE . 85C0 test eax,eax
004BBF00 . 59 pop ecx
004BBF01 . 74 58 je short SnagIt32.004BBF5B ; 不能跳
004BBF03 . 6A 02 push 2
004BBF05 . 8D45 E0 lea eax,dword ptr ss:[ebp-20]
004BBF08 . 50 push eax
004BBF09 . 8D45 9C lea eax,dword ptr ss:[ebp-64]
004BBF0C . 50 push eax
004BBF0D . E8 AE970800 call SnagIt32.005456C0
004BBF12 . 83C4 0C add esp,0C
004BBF15 . 85C0 test eax,eax
004BBF17 . 74 42 je short SnagIt32.004BBF5B ; 不能跳
004BBF19 . 6A 02 push 2
004BBF1B . 8D45 EC lea eax,dword ptr ss:[ebp-14]
004BBF1E . 50 push eax
004BBF1F . 8D45 9C lea eax,dword ptr ss:[ebp-64]
004BBF22 . 50 push eax
004BBF23 . E8 98970800 call SnagIt32.005456C0
004BBF28 . 83C4 0C add esp,0C
004BBF2B . 85C0 test eax,eax
004BBF2D . 74 2C je short SnagIt32.004BBF5B ; 不能跳
004BBF2F . 8D45 D0 lea eax,dword ptr ss:[ebp-30]
004BBF32 . 50 push eax
004BBF33 . 8D45 9C lea eax,dword ptr ss:[ebp-64]
004BBF36 . 50 push eax
004BBF37 . E8 44980800 call SnagIt32.00545780----->这里比较注册码要跟进去
004BBF3C . 85C0 test eax,eax
004BBF3E . 59 pop ecx
004BBF3F . 59 pop ecx
004BBF40 . 74 19 je short SnagIt32.004BBF5B ; 不能跳
004BBF42 . 66:83FF 63 cmp di,63 ; 注意 edi 不能小于63
它是由A9＋0FFBF 计算出来的
004BBF46 73 06 jnb short SnagIt32.004BBF4E ; 这里要跳
004BBF48 . C645 F3 0B mov byte ptr ss:[ebp-D],0B
004BBF4C . EB 0D jmp short SnagIt32.004BBF5B
004BBF4E > 885D F3 mov byte ptr ss:[ebp-D],bl
004BBF51 . C645 F2 01 mov byte ptr ss:[ebp-E],1 ; 只要到这里就注册成功了，哈哈
004BBF55 . EB 04 jmp short SnagIt32.004BBF5B
004BBF57 > C645 F3 0C mov byte ptr ss:[ebp-D],0C
004BBF5B > 5F pop edi
004BBF5C . 5E pop esi
004BBF5D > 8D4D 0C lea ecx,dword ptr ss:[ebp+C]
004BBF60 . FF15 34F35500 call dword ptr ds:[<&MFC71.#578>] ; MFC71.7C1771B1
004BBF66 . 8B4D F4 mov ecx,dword ptr ss:[ebp-C]
004BBF69 . 33C0 xor eax,eax ; 这里是没问题的
004BBF6B . 8A65 F3 mov ah,byte ptr ss:[ebp-D]
004BBF6E . 5B pop ebx
004BBF6F . 64:890D 00000000 mov dword ptr fs:[0],ecx
004BBF76 . 8A45 F2 mov al,byte ptr ss:[ebp-E] ; ss[12ddea] 这里便eax要不等于0
004BBF79 . C9 leave
004BBF7A . C2 0800 retn 8
004BBF7D . B8 CC2B5800 mov eax,SnagIt32.00582BCC
004BBF82 . C3 retn
004BBF83 $ E9 588A0800 jmp SnagIt32.005449E0
004BBF88 . 56 push esi
004BBF89 . 8BF1 mov esi,ecx
004BBF8B . E8 F3FFFFFF call SnagIt32.004BBF83
004BBF90 . F64424 08 01 test byte ptr ss:[esp+8],1
004BBF95 . 74 07 je short SnagIt32.004BBF9E
004BBF97 . 56 push esi ; /block
004BBF98 . E8 E3C60800 call <jmp.&MFC71.#764> ; \free
004BBF9D . 59 pop ecx
004BBF9E > 8BC6 mov eax,esi
004BBFA0 . 5E pop esi
004BBFA1 . C2 0400 retn 4
----------------------------------------------------------------- 这下面是比较注册码
00545780 /$ 83EC 7C sub esp,7C
00545783 |. 33C0 xor eax,eax
00545785 |. B9 30000000 mov ecx,30
0054578A |. 8D9B 00000000 lea ebx,dword ptr ds:[ebx]
00545790 |> 0FB7D0 /movzx edx,ax
00545793 |. 40 |inc eax
00545794 |. 884C14 04 |mov byte ptr ss:[esp+edx+4],cl ; ss[12dd05
00545798 |. 41 |inc ecx
00545799 |. 66:83F9 39 |cmp cx,39
0054579D |.^ 76 F1 \jbe short SnagIt32.00545790
0054579F |. B9 41000000 mov ecx,41 ; 这里是把栈初始化
005457A4 |> 0FB7D0 /movzx edx,ax
005457A7 |. 40 |inc eax
005457A8 |. 884C14 04 |mov byte ptr ss:[esp+edx+4],cl
005457AC |. 41 |inc ecx
005457AD |. 66:83F9 46 |cmp cx,46
005457B1 |.^ 76 F1 \jbe short SnagIt32.005457A4
005457B3 |. 55 push ebp
005457B4 |. 8BAC24 88000000 mov ebp,dword ptr ss:[esp+88]
005457BB |. 56 push esi
005457BC |. 8D45 0C lea eax,dword ptr ss:[ebp+C] ; ss[12ddd4]=A9
005457BF |. 6A 02 push 2 ; 这里可能是一个函数吧！
005457C1 |. 50 push eax
005457C2 |. E8 49FFFFFF call SnagIt32.00545710 ; A9 入eax
005457C7 |. 8BB424 90000000 mov esi,dword ptr ss:[esp+90]
005457CE |. 894424 10 mov dword ptr ss:[esp+10],eax ; ss[12dd00]
005457D2 |. 0FB706 movzx eax,word ptr ds:[esi]
005457D5 |. 8D48 02 lea ecx,dword ptr ds:[eax+2]
005457D8 |. 83C4 08 add esp,8
005457DB |. 83F9 32 cmp ecx,32
005457DE |. 7F 0E jg short SnagIt32.005457EE
005457E0 |. 66:8B5424 08 mov dx,word ptr ss:[esp+8]
005457E5 |. 66:895430 02 mov word ptr ds:[eax+esi+2],dx ; ds[12dd9a]
005457EA |. 66:8306 02 add word ptr ds:[esi],2
005457EE |> 8D45 08 lea eax,dword ptr ss:[ebp+8]
005457F1 |. 6A 04 push 4 ; eax指针指向“9012A9"
005457F3 |. 50 push eax
005457F4 |. E8 17FFFFFF call SnagIt32.00545710 ; 9012 入eax
005457F9 |. 894424 10 mov dword ptr ss:[esp+10],eax
005457FD |. 0FB706 movzx eax,word ptr ds:[esi]
00545800 |. 8D48 02 lea ecx,dword ptr ds:[eax+2]
00545803 |. 83C4 08 add esp,8
00545806 |. 83F9 32 cmp ecx,32
00545809 |. 7F 0E jg short SnagIt32.00545819
0054580B |. 66:8B5424 08 mov dx,word ptr ss:[esp+8]
00545810 |. 66:895430 02 mov word ptr ds:[eax+esi+2],dx ; ds[12dd9c]
00545815 |. 66:8306 02 add word ptr ds:[esi],2
00545819 |> 8D4424 2C lea eax,dword ptr ss:[esp+2C]
0054581D |. 57 push edi
0054581E |. 50 push eax
0054581F |. E8 8C000000 call SnagIt32.005458B0 ; 这里与密码表有关
00545824 |. 0FB70E movzx ecx,word ptr ds:[esi]
00545827 |. 51 push ecx
00545828 |. 8D7E 02 lea edi,dword ptr ds:[esi+2]
0054582B |. 8D5424 38 lea edx,dword ptr ss:[esp+38]
0054582F |. 57 push edi
00545830 |. 52 push edx
00545831 |. E8 8A090000 call SnagIt32.005461C0
00545836 |. 8D4424 40 lea eax,dword ptr ss:[esp+40]
0054583A |. 50 push eax
0054583B |. 8D4C24 34 lea ecx,dword ptr ss:[esp+34]
0054583F |. 51 push ecx
00545840 |. E8 3B0A0000 call SnagIt32.00546280 ; 这里要跟进去，计算密码表
00545845 |. 33C0 xor eax,eax
00545847 |. B9 0C000000 mov ecx,0C
0054584C |. F3:AB rep stos dword ptr es:[edi]
0054584E |. 83C4 18 add esp,18
00545851 |. 66:AB stos word ptr es:[edi]
00545853 |. 33D2 xor edx,edx
00545855 |. 5F pop edi ; 这里的edi 要注意
00545856 |> 0FB7CA /movzx ecx,dx
00545859 |. 8BC1 |mov eax,ecx
0054585B |. D1E8 |shr eax,1
0054585D |. 8A0428 |mov al,byte ptr ds:[eax+ebp]
00545860 |. 3C 61 |cmp al,61
00545862 |. 72 0C |jb short SnagIt32.00545870
00545864 |. 3C 7A |cmp al,7A
00545866 |. 77 08 |ja short SnagIt32.00545870
00545868 |. 0FB6C0 |movzx eax,al
0054586B |. 83E8 20 |sub eax,20
0054586E |. EB 03 |jmp short SnagIt32.00545873
00545870 |> 0FB6C0 |movzx eax,al
00545873 |> 0FB64C0C 1C |movzx ecx,byte ptr ss:[esp+ecx+1C] ; esp=12dcf8
00545878 |. 83E1 0F |and ecx,0F
0054587B |. 0FBE4C0C 0C |movsx ecx,byte ptr ss:[esp+ecx+C] ; 这里是 跟密码表对比
00545880 |. 0FB6C0 |movzx eax,al
00545883 |. 3BC8 |cmp ecx,eax－－－> 这里下个断点， 依次按F9 就可以把前8位注册码读出来了
00545885 |. 75 14 |jnz short SnagIt32.0054589B ; 这里是不能跳的，跳则失败了
00545887 |. 83C2 02 |add edx,2
0054588A |. 66:83FA 10 |cmp dx,10
0054588E |.^ 72 C6 \jb short SnagIt32.00545856
00545890 |. 5E pop esi
00545891 |. B8 01000000 mov eax,1 eax要等 于1
00545896 |. 5D pop ebp
00545897 |. 83C4 7C add esp,7C
0054589A |. C3 retn
0054589B |> 5E pop esi ; 跳则失败
0054589C |. 33C0 xor eax,eax 等于0失败
0054589E |. 5D pop ebp
0054589F |. 83C4 7C add esp,7C
005458A2 \. C3 retn
－－－－－－－－－－－－－－－－－－－－－－－－－
005458B0 /$ 8B4424 04 mov eax,dword ptr ss:[esp+4]
005458B4 |. 33C9 xor ecx,ecx
005458B6 |. 8948 14 mov dword ptr ds:[eax+14],ecx
005458B9 |. 8948 10 mov dword ptr ds:[eax+10],ecx
005458BC |. C700 01234567 mov dword ptr ds:[eax],67452301 ; 这下面四组是最初的数，最后要被密码表
代替
005458C2 |. C740 04 89ABCDEF mov dword ptr ds:[eax+4],EFCDAB89
005458C9 |. C740 08 FEDCBA98 mov dword ptr ds:[eax+8],98BADCFE
005458D0 |. C740 0C 76543210 mov dword ptr ds:[eax+C],10325476
－－－－－－－－－－－－－－－－－－－－－－－－跟进计算密友表
00546280 /$ 83EC 08 sub esp,8
00546283 |. 56 push esi
00546284 |. 57 push edi
00546285 |. 8B7C24 18 mov edi,dword ptr ss:[esp+18] ;
00546289 |. 33C9 xor ecx,ecx
0054628B |. 8D47 12 lea eax,dword ptr ds:[edi+12]
0054628E |. 8BFF mov edi,edi
00546290 |> 8A50 FE /mov dl,byte ptr ds:[eax-2]
00546293 |. 88540C 08 |mov byte ptr ss:[esp+ecx+8],dl
00546297 |. 8A50 FF |mov dl,byte ptr ds:[eax-1]
0054629A |. 88540C 09 |mov byte ptr ss:[esp+ecx+9],dl
0054629E |. 8A10 |mov dl,byte ptr ds:[eax]
005462A0 |. 88540C 0A |mov byte ptr ss:[esp+ecx+A],dl
005462A4 |. 8A50 01 |mov dl,byte ptr ds:[eax+1]
005462A7 |. 88540C 0B |mov byte ptr ss:[esp+ecx+B],dl
005462AB |. 83C1 04 |add ecx,4
005462AE |. 83C0 04 |add eax,4
005462B1 |. 83F9 08 |cmp ecx,8
005462B4 |.^ 72 DA \jb short SnagIt32.00546290
005462B6 |. 8B4F 10 mov ecx,dword ptr ds:[edi+10]
005462B9 |. C1E9 03 shr ecx,3
005462BC |. 83E1 3F and ecx,3F
005462BF |. 83F9 38 cmp ecx,38
005462C2 |. B8 38000000 mov eax,38
005462C7 |. 72 05 jb short SnagIt32.005462CE
005462C9 |. B8 78000000 mov eax,78
005462CE |> 2BC1 sub eax,ecx
005462D0 |. 50 push eax
005462D1 |. 68 A0885B00 push SnagIt32.005B88A0
005462D6 |. 57 push edi
005462D7 |. E8 E4FEFFFF call SnagIt32.005461C0
005462DC |. 6A 08 push 8
005462DE |. 8D4424 18 lea eax,dword ptr ss:[esp+18]
005462E2 |. 50 push eax
005462E3 |. 57 push edi
005462E4 |. E8 D7FEFFFF call SnagIt32.005461C0 ; 这里是关键的 计算密码表
005462E9 |. 8B4C24 2C mov ecx,dword ptr ss:[esp+2C]
005462ED |. 83C4 18 add esp,18
005462F0 |. 41 inc ecx
005462F1 |. 8D47 02 lea eax,dword ptr ds:[edi+2]
005462F4 |. BE 04000000 mov esi,4
005462F9 |. 8DA424 00000000 lea esp,dword ptr ss:[esp]
00546300 |> 8A50 FE /mov dl,byte ptr ds:[eax-2]
00546303 |. 8851 FF |mov byte ptr ds:[ecx-1],dl ; 这里的循环是转移密码表
00546306 |. 8A50 FF |mov dl,byte ptr ds:[eax-1]
00546309 |. 8811 |mov byte ptr ds:[ecx],dl
0054630B |. 8A10 |mov dl,byte ptr ds:[eax]
0054630D |. 8851 01 |mov byte ptr ds:[ecx+1],dl
00546310 |. 8A50 01 |mov dl,byte ptr ds:[eax+1]
00546313 |. 8851 02 |mov byte ptr ds:[ecx+2],dl
00546316 |. 83C0 04 |add eax,4
00546319 |. 83C1 04 |add ecx,4
0054631C |. 4E |dec esi
0054631D |.^ 75 E1 \jnz short SnagIt32.00546300
0054631F |. B9 16000000 mov ecx,16
00546324 |. 33C0 xor eax,eax
00546326 |. F3:AB rep stos dword ptr es:[edi]
00546328 |. 5F pop edi
00546329 |. 5E pop esi
0054632A |. 83C4 08 add esp,8
0054632D \. C3 retn
－－－－－－－－－－－－－－－－－－－－－－－－>跟进关键密码表
005461C0 /$ 8B4C24 0C mov ecx,dword ptr ss:[esp+C]
005461C4 |. 53 push ebx
005461C5 |. 8B5C24 08 mov ebx,dword ptr ss:[esp+8]
005461C9 |. 8B53 10 mov edx,dword ptr ds:[ebx+10]
005461CC |. 55 push ebp
005461CD |. 8BC2 mov eax,edx
005461CF |. 56 push esi
005461D0 |. C1E8 03 shr eax,3
005461D3 |. 8D14CA lea edx,dword ptr ds:[edx+ecx*8]
005461D6 |. 8D34CD 00000000 lea esi,dword ptr ds:[ecx*8]
005461DD |. 83E0 3F and eax,3F
005461E0 |. 3BD6 cmp edx,esi
005461E2 |. 57 push edi
005461E3 |. 8953 10 mov dword ptr ds:[ebx+10],edx
005461E6 |. 73 03 jnb short SnagIt32.005461EB
005461E8 |. FF43 14 inc dword ptr ds:[ebx+14]
005461EB |> 8B7B 14 mov edi,dword ptr ds:[ebx+14]
005461EE |. 8BD1 mov edx,ecx
005461F0 |. C1EA 1D shr edx,1D
005461F3 |. BD 40000000 mov ebp,40
005461F8 |. 03FA add edi,edx
005461FA |. 2BE8 sub ebp,eax
005461FC |. 3BCD cmp ecx,ebp
005461FE |. 897B 14 mov dword ptr ds:[ebx+14],edi
00546201 |. 72 54 jb short SnagIt32.00546257
00546203 |. 8B7424 18 mov esi,dword ptr ss:[esp+18]
00546207 |. 8D7C18 18 lea edi,dword ptr ds:[eax+ebx+18]
0054620B |. 8BCD mov ecx,ebp
0054620D |. 8BC1 mov eax,ecx
0054620F |. C1E9 02 shr ecx,2
00546212 |. F3:A5 rep movs dword ptr es:[edi],dword ptr ds>
00546214 |. 8BC8 mov ecx,eax
00546216 |. 83E1 03 and ecx,3
00546219 |. F3:A4 rep movs byte ptr es:[edi],byte ptr ds:[>
0054621B |. 8D4B 18 lea ecx,dword ptr ds:[ebx+18]
0054621E |. 53 push ebx
0054621F |. E8 BCF6FFFF call SnagIt32.005458E0 ; 这里面跟进去就是计算密码表了
00546224 |. 8D75 3F lea esi,dword ptr ss:[ebp+3F]
00546227 |. 8BFD mov edi,ebp
00546229 |. 8B6C24 20 mov ebp,dword ptr ss:[esp+20]
0054622D |. 83C4 04 add esp,4
00546230 |. 3BF5 cmp esi,ebp
00546232 |. 73 1B jnb short SnagIt32.0054624F
00546234 |> 8B4C24 18 /mov ecx,dword ptr ss:[esp+18]
00546238 |. 8D4C31 C1 |lea ecx,dword ptr ds:[ecx+esi-3F]
0054623C |. 53 |push ebx
0054623D |. E8 9EF6FFFF |call SnagIt32.005458E0
00546242 |. 83C6 40 |add esi,40
00546245 |. 83C4 04 |add esp,4
00546248 |. 83C7 40 |add edi,40
0054624B |. 3BF5 |cmp esi,ebp
0054624D |.^ 72 E5 \jb short SnagIt32.00546234
0054624F |> 8B4C24 1C mov ecx,dword ptr ss:[esp+1C]
00546253 |. 33C0 xor eax,eax
00546255 |. EB 02 jmp short SnagIt32.00546259
00546257 |> 33FF xor edi,edi
00546259 |> 8B5424 18 mov edx,dword ptr ss:[esp+18]
0054625D |. 2BCF sub ecx,edi
0054625F |. 8D3417 lea esi,dword ptr ds:[edi+edx]
00546262 |. 8D7C18 18 lea edi,dword ptr ds:[eax+ebx+18]
00546266 |. 8BC1 mov eax,ecx
00546268 |. C1E9 02 shr ecx,2
0054626B |. F3:A5 rep movs dword ptr es:[edi],dword ptr ds>
0054626D |. 8BC8 mov ecx,eax
0054626F |. 83E1 03 and ecx,3
00546272 |. F3:A4 rep movs byte ptr es:[edi],byte ptr ds:[>
00546274 |. 5F pop edi
00546275 |. 5E pop esi
00546276 |. 5D pop ebp
00546277 |. 5B pop ebx
00546278 \. C3 retn
－－－－－－－－－－－－－－－－－－－－－－> 密码表计算 要跟进去
005458E0 /$ 8B4424 04 mov eax,dword ptr ss:[esp+4] ; 这里是最重要的吧！ 看到有点晕了吧！往
下面看有多长
005458E4 |. 83EC 44 sub esp,44
005458E7 |. 53 push ebx
005458E8 |. 55 push ebp
005458E9 |. 56 push esi
005458EA |. 57 push edi
005458EB |. 83C1 02 add ecx,2
005458EE |. 8D7424 14 lea esi,dword ptr ss:[esp+14]
005458F2 |. BF 10000000 mov edi,10
005458F7 |> 0FB659 FF movzx ebx,byte ptr ds:[ecx-1]
005458FB |. 33D2 xor edx,edx
005458FD |. 8A71 01 mov dh,byte ptr ds:[ecx+1]
00545900 |. 83C6 04 add esi,4
00545903 |. 83C1 04 add ecx,4
00545906 |. 8A51 FC mov dl,byte ptr ds:[ecx-4]
00545909 |. C1E2 08 shl edx,8 ; 这里要注册意了呀！是很重要的
啦！edx=4578
0054590C |. 0BD3 or edx,ebx
0054590E |. 0FB659 FA movzx ebx,byte ptr ds:[ecx-6]
00545912 |. C1E2 08 shl edx,8
00545915 |. 0BD3 or edx,ebx
00545917 |. 4F dec edi
00545918 |. 8956 FC mov dword ptr ds:[esi-4],edx
0054591B |.^ 75 DA jnz short SnagIt32.005458F7
0054591D |. 8B70 04 mov esi,dword ptr ds:[eax+4] ; 这里该用到了吧！efcdab89
00545920 |. 8B78 08 mov edi,dword ptr ds:[eax+8] ; 98badcfe
00545923 |. 8B50 0C mov edx,dword ptr ds:[eax+C] ; 10325476
00545926 |. 8B00 mov eax,dword ptr ds:[eax] ; 67452301
00545928 |. 8B6C24 14 mov ebp,dword ptr ss:[esp+14] ; 45780001
0054592C |. 8BDF mov ebx,edi
0054592E |. 23DE and ebx,esi ; esi=efcdab89,ebx=98badcfe-->88888888
00545930 |. 8BCE mov ecx,esi
00545932 |. F7D1 not ecx ; 10325476
00545934 |. 23CA and ecx,edx
00545936 |. 0BCB or ecx,ebx ; ebx=88888888,ecx=10325476--> 98badcfe
00545938 |. 03CD add ecx,ebp ; ebp=45780001,ecx=98badcfe-->de32dcff
0054593A |. 8D8C08 78A46AD7 lea ecx,dword ptr ds:[eax+ecx+D76AA478]
00545941 |. 8B6C24 18 mov ebp,dword ptr ss:[esp+18] ; ebp=901200a9
00545945 |. 8BC1 mov eax,ecx ; eax=67452301,ecx=1ce2a478
00545947 |. C1E1 07 shl ecx,7 ; 71523c00
0054594A |. C1E8 19 shr eax,19 ; E
0054594D |. 0BC1 or eax,ecx ; eax=71523c0e
0054594F |. 03C6 add eax,esi ; esi=efcdab89,eax=71523c0e->611fe797
00545951 |. 8BC8 mov ecx,eax
00545953 |. F7D1 not ecx ; ecx=9ee01868
00545955 |. 23CF and ecx,edi
00545957 |. 8BDE mov ebx,esi
00545959 |. 23D8 and ebx,eax －－－－－－－－－－－> 下面的一些代码略了
0054595B |. 0BCB or ecx,ebx
0054595D |. 03CD add ecx,ebp
0054595F |. 8B6C24 1C mov ebp,dword ptr ss:[esp+1C]
00545963 |. 8D940A 56B7C7E8 lea edx,dword ptr ds:[edx+ecx+E8C7B756]
0054596A |. 8BCA mov ecx,edx
00546114 |. F7D7 not edi
00546116 |. 0BF9 or edi,ecx
00546118 |. 33FE xor edi,esi
0054611A |. 03FD add edi,ebp
0054611C |. 8DBC38 827E53F7 lea edi,dword ptr ds:[eax+edi+F7537E82]
00546123 |. 8B6C24 40 mov ebp,dword ptr ss:[esp+40]
00546127 |. 8BC7 mov eax,edi
00546129 |. C1E7 06 shl edi,6
0054612C |. C1E8 1A shr eax,1A
0054612F |. 0BC7 or eax,edi ; edi=a07e5480, eax=31 --> eax=a07e54b1
00546131 |. 8BFE mov edi,esi
00546133 |. F7D7 not edi
00546135 |. 03C1 add eax,ecx
00546137 |. 0BF8 or edi,eax
00546139 |. 33F9 xor edi,ecx
0054613B |. 03FD add edi,ebp
0054613D |. 8B6C24 1C mov ebp,dword ptr ss:[esp+1C]
00546141 |. 8DBC3A 35F23ABD lea edi,dword ptr ds:[edx+edi+BD3AF235]
00546148 |. 8BD7 mov edx,edi
0054614A |. C1E7 0A shl edi,0A
0054614D |. 8B5C24 38 mov ebx,dword ptr ss:[esp+38]
00546151 |. C1EA 16 shr edx,16
00546154 |. 0BD7 or edx,edi
00546156 |. 03D0 add edx,eax
00546158 |. 8BF9 mov edi,ecx
0054615A |. F7D7 not edi
0054615C |. 0BFA or edi,edx
0054615E |. 33F8 xor edi,eax
00546160 |. 03FD add edi,ebp
00546162 |. 8DB43E BBD2D72A lea esi,dword ptr ds:[esi+edi+2AD7D2BB]
00546169 |. 8BFE mov edi,esi
0054616B |. C1E6 0F shl esi,0F
0054616E |. C1EF 11 shr edi,11
00546171 |. 0BFE or edi,esi
00546173 |. 8BF0 mov esi,eax
00546175 |. F7D6 not esi
00546177 |. 03FA add edi,edx －－－－－－>来到这里
00546179 |. 0BF7 or esi,edi
0054617B |. 33F2 xor esi,edx ; edx=824f88aa,esi=ebe9f97f-->
69a671d5
0054617D |. 03F3 add esi,ebx
0054617F |. 8D8C31 91D386EB lea ecx,dword ptr ds:[ecx+esi+EB86D391]
00546186 |. 8B7424 58 mov esi,dword ptr ss:[esp+58]
0054618A |. 8B1E mov ebx,dword ptr ds:[esi]
0054618C |. 03D8 add ebx,eax
0054618E |. 891E mov dword ptr ds:[esi],ebx ; 这是第一组:ebx=fc7d02ca
00546190 |. 8BC1 mov eax,ecx
00546192 |. 8B5E 04 mov ebx,dword ptr ds:[esi+4]
00546195 |. C1E0 15 shl eax,15
00546198 |. C1E9 0B shr ecx,0B
0054619B |. 0BC1 or eax,ecx
0054619D |. 03C3 add eax,ebx ; eax=0fc93cda,ebx=efcdab89--> ff96e863
0054619F |. 03C7 add eax,edi
005461A1 |. 8946 04 mov dword ptr ds:[esi+4],eax ; 这是第二组:e978e1e2
005461A4 |. 8B46 08 mov eax,dword ptr ds:[esi+8]
005461A7 |. 03C7 add eax,edi ; eax=98badcfe,edi=e9e1f97e-> 829cd67d
005461A9 |. 8946 08 mov dword ptr ds:[esi+8],eax ; 这是第三组：829cd67d
005461AC |. 8B46 0C mov eax,dword ptr ds:[esi+C]
005461AF |. 5F pop edi
005461B0 |. 03C2 add eax,edx ; eax=824f88aa, edx=10325476-->
9281dd20
005461B2 |. 8946 0C mov dword ptr ds:[esi+C],eax ; 这是第四组：9281dd20
005461B5 |. 5E pop esi
005461B6 |. 5D pop ebp
005461B7 |. 5B pop ebx
005461B8 |. 83C4 44 add esp,44
005461BB \. C3 retn
－－－－－－－－－－－－－－－－－－－－－>
非常抱歉，我这里不能提供注册算法了，你自己也可以看到 密码表的计算是有多长， 感兴趣的自己可以去算算
有此向 pmma 表示感谢 我参考了他写的 SnagIt v6.21零售版 的破解教程 才破解这个版本的
我提供的注册码式用于现在最新版本的snagit 7.12 你可以到snagit的官方网站去下载
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【版权声明】 本文纯属技术交流, 转载请注明作者并保持文章的完整, 谢谢!
下载地址：http://www.techsmith.com/download/snagitdefault.asp?lid=DownloadSnagIt
密码表：
[培训]内核驱动高级班，冲击BAT一流互联网大厂工作，每周日13:00-18:00直播授课
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