Becky! Internet Mail Ver.2.05.2
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简单算法——Becky! Internet Mail Ver.2.05.2
【软件简介】：Becky是一款由日本人编制的邮件软件， 此是著名汉化人小鱼儿制作的完美汉化版本。它具备比OE更为强大的功能，可以完美支持多内码，可以完美支持微软Hotmail邮箱（包括发送，这点可是别的E-mail工具所不具备的），完美无缺的远程邮箱管理（可选择性地下载其中某个附件）功能等诸多功能。
【软件限制】：30天试用。其实机子里有OE、FoxMail，不会用它的。^-^
【作者声明】：初学Crack，只是感兴趣，没有其它目的。失误之处敬请诸位大侠赐教！
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【过 程】：很久以前写的，呵呵，索性也贴上来吧。
B2.exe无壳，可能让汉化者脱了？Visual C++ 6.0编写。
填好试炼信息：
名称：fly
注册的通行码：9912-4444-WXYZ
E-Mail：fly4099@sohu.com
反汇编后的提示很多乱码，所以我立即祭出屠龙刀TRW2000！
填好注册信息后，CTR+N，下BPX HMEMCPY，F5返回，点“确定”，被拦。
PMODULE直达程序领空。BD,暂停断点。F12三次，F10至525CB4。
—————————————————————————————————
:00525CB4 A1F02D5B00 mov eax, dword ptr [005B2DF0]
====>停在这儿！
F10一直走。
* Possible Reference to String Resource ID=00010: "蕙1%"
|
:00525D37 6A0A push 0000000A
:00525D39 52 push edx
:00525D3A 8BCB mov ecx, ebx
:00525D3C E8FEDD0200 call 00553B3F
* Possible StringData Ref from Data Obj ->"RBK"
|
:00525D41 6880975A00 push 005A9780
:00525D46 8D4C2420 lea ecx, dword ptr [esp+20]
:00525D4A E854690300 call 0055C6A3
:00525D4F 53 push ebx
:00525D50 8D442420 lea eax, dword ptr [esp+20]
* Possible StringData Ref from Data Obj ->"--"
|
:00525D54 68A0DE5A00 push 005ADEA0
:00525D59 8D4C2420 lea ecx, dword ptr [esp+20]
:00525D5D 50 push eax
:00525D5E 51 push ecx
:00525D5F E84B6A0300 call 0055C7AF
:00525D64 8D542414 lea edx, dword ptr [esp+14]
:00525D68 50 push eax
:00525D69 52 push edx
:00525D6A E8DA690300 call 0055C749
:00525D6F 8D4C2418 lea ecx, dword ptr [esp+18]
:00525D73 E8A2670300 call 0055C51A
:00525D78 51 push ecx
:00525D79 8D442414 lea eax, dword ptr [esp+14]
:00525D7D 8BCC mov ecx, esp
:00525D7F 50 push eax
:00525D80 E80A650300 call 0055C28F
====>取得注册信息
:00525D85 E8E6F6EEFF call 00415470
====>关键CALL！
:00525D8A 85C0 test eax, eax
====>EAX为0则注册成功！
:00525D8C 0F85E5000000 jne 00525E77
====>跳则OVER！
:00525D92 8B2F mov ebp, dword ptr [edi]
:00525D94 E838F10400 call 00574ED1
:00525D99 8B4004 mov eax, dword ptr [eax+04]
:00525D9C 55 push ebp
* Possible StringData Ref from Data Obj ->"User"
|
:00525D9D 6870995A00 push 005A9970
* Possible StringData Ref from Data Obj ->"License"
|
:00525DA2 68089A5A00 push 005A9A08
:00525DA7 8BC8 mov ecx, eax
:00525DA9 E80E100400 call 00566DBC
:00525DAE E81EF10400 call 00574ED1
:00525DB3 8B4C2410 mov ecx, dword ptr [esp+10]
:00525DB7 8B4004 mov eax, dword ptr [eax+04]
:00525DBA 51 push ecx
* Possible StringData Ref from Data Obj ->"Code"
|
:00525DBB 6868995A00 push 005A9968
* Possible StringData Ref from Data Obj ->"License"
—————————————————————————————————
F8进入关键CALL： 00525D85 call 00415470
:00415470 8B442404 mov eax, dword ptr [esp+04]
====>过此D EAX=RBK-9912-4444-WXYZ 假码前加RBK-
:00415474 83EC14 sub esp, 00000014
:00415477 8B48F8 mov ecx, dword ptr [eax-08]
:0041547A 57 push edi
:0041547B 33FF xor edi, edi
:0041547D 83F912 cmp ecx, 00000012
====>比较是否为18位，即 注册码=18-4=14位！
:00415480 0F85AC010000 jne 00415632
====>跳则OVER！
:00415486 8A5003 mov dl, byte ptr [eax+03]
:00415489 B12D mov cl, 2D
====> - 移入CL
:0041548B 3AD1 cmp dl, cl
====>比较第四位（RBK“-”）是否为-
:0041548D 0F859F010000 jne 00415632
====>这次当然不跳了，它自己加的嘛
:00415493 384808 cmp byte ptr [eax+08], cl
====>比较第九位（RBK-9912“-”）是否为-
:00415496 0F8596010000 jne 00415632
====>跳则OVER！
:0041549C 38480D cmp byte ptr [eax+0D], cl
====>比较第十四位（-4444“-”）是否为-
:0041549F 0F858D010000 jne 00415632
====>跳则OVER！
:004154A5 53 push ebx
:004154A6 56 push esi
:004154A7 8D442418 lea eax, dword ptr [esp+18]
* Possible Reference to Dialog: DialogID_006B, CONTROL_ID:0003, "h??&L)"
|
:004154AB 6A03 push 00000003
:004154AD 50 push eax
:004154AE 8D4C242C lea ecx, dword ptr [esp+2C]
:004154B2 E89AE71300 call 00553C51
* Possible Reference to String Resource ID=00004: ">................"
|
:004154B7 6A04 push 00000004
:004154B9 8D4C2414 lea ecx, dword ptr [esp+14]
* Possible Reference to String Resource ID=00004: ">................"
|
:004154BD 6A04 push 00000004
:004154BF 51 push ecx
:004154C0 8D4C2430 lea ecx, dword ptr [esp+30]
:004154C4 E876E61300 call 00553B3F
* Possible Reference to String Resource ID=00004: ">................"
|
:004154C9 6A04 push 00000004
:004154CB 8D542418 lea edx, dword ptr [esp+18]
* Possible Reference to Dialog: DialogID_00A5, CONTROL_ID:0009, ""
|
* Possible Reference to String Resource ID=00009: "蕙蝥?
|
:004154CF 6A09 push 00000009
:004154D1 52 push edx
:004154D2 8D4C2430 lea ecx, dword ptr [esp+30]
:004154D6 E864E61300 call 00553B3F
* Possible Reference to String Resource ID=00004: ">................"
|
:004154DB 6A04 push 00000004
:004154DD 8D442410 lea eax, dword ptr [esp+10]
* Possible Reference to String Resource ID=00014: " "
|
:004154E1 6A0E push 0000000E
:004154E3 50 push eax
:004154E4 8D4C2430 lea ecx, dword ptr [esp+30]
:004154E8 E852E61300 call 00553B3F
* Possible StringData Ref from Data Obj ->"RBK"
|
:004154ED BE80975A00 mov esi, 005A9780
:004154F2 8B442418 mov eax, dword ptr [esp+18]
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:00415518(C)
|
:004154F6 8A10 mov dl, byte ptr [eax]
:004154F8 8A1E mov bl, byte ptr [esi]
:004154FA 8ACA mov cl, dl
:004154FC 3AD3 cmp dl, bl
:004154FE 751E jne 0041551E
:00415500 84C9 test cl, cl
:00415502 7416 je 0041551A
:00415504 8A5001 mov dl, byte ptr [eax+01]
:00415507 8A5E01 mov bl, byte ptr [esi+01]
:0041550A 8ACA mov cl, dl
:0041550C 3AD3 cmp dl, bl
:0041550E 750E jne 0041551E
:00415510 83C002 add eax, 00000002
:00415513 83C602 add esi, 00000002
:00415516 84C9 test cl, cl
:00415518 75DC jne 004154F6
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:00415502(C)
|
:0041551A 33C0 xor eax, eax
:0041551C EB05 jmp 00415523
* Referenced by a (U)nconditional or (C)onditional Jump at Addresses:
|:004154FE(C), :0041550E(C)
|
:0041551E 1BC0 sbb eax, eax
:00415520 83D8FF sbb eax, FFFFFFFF
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:0041551C(U)
|
:00415523 85C0 test eax, eax
:00415525 0F85DA000000 jne 00415605
:0041552B 8D44241C lea eax, dword ptr [esp+1C]
:0041552F 6A02 push 00000002
:00415531 50 push eax
:00415532 8D4C2418 lea ecx, dword ptr [esp+18]
:00415536 E89AE61300 call 00553BD5
:0041553B 8B00 mov eax, dword ptr [eax]
:0041553D 50 push eax
:0041553E E8C2D21200 call 00542805
:00415543 83C404 add esp, 00000004
:00415546 8D4C241C lea ecx, dword ptr [esp+1C]
:0041554A 8BF0 mov esi, eax
:0041554C E8C96F1400 call 0055C51A
:00415551 8B4C2410 mov ecx, dword ptr [esp+10]
:00415555 51 push ecx
====>D ECX=9912
:00415556 E8AAD21200 call 00542805
====>检测假码前4位是否为数字？且3、4位要大于00
:0041555B 83C404 add esp, 00000004
:0041555E 85C0 test eax, eax
:00415560 0F849F000000 je 00415605
====>不能跳！
:00415566 83FE01 cmp esi, 00000001
:00415569 0F8C96000000 jl 00415605
:0041556F 83FE0C cmp esi, 0000000C
====>比较第三、四位是否小于 或 等于“12”
:00415572 0F8F8D000000 jg 00415605
====>不能跳！
:00415578 8B442414 mov eax, dword ptr [esp+14]
* Possible StringData Ref from Data Obj ->"3437"
|
:0041557C BE78975A00 mov esi, 005A9778
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:004155A3(C)
|
:00415581 8A10 mov dl, byte ptr [eax]
====>D EAX=4444
:00415583 8A1E mov bl, byte ptr [esi]
====>D ESI=3437 第2组数固定为3437
:00415585 8ACA mov cl, dl
:00415587 3AD3 cmp dl, bl
====>逐位比较。 因此：改4444为3437
:00415589 751E jne 004155A9
:0041558B 84C9 test cl, cl
:0041558D 7416 je 004155A5
:0041558F 8A5001 mov dl, byte ptr [eax+01]
:00415592 8A5E01 mov bl, byte ptr [esi+01]
:00415595 8ACA mov cl, dl
:00415597 3AD3 cmp dl, bl
:00415599 750E jne 004155A9
:0041559B 83C002 add eax, 00000002
:0041559E 83C602 add esi, 00000002
:004155A1 84C9 test cl, cl
:004155A3 75DC jne 00415581
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:0041558D(C)
|
:004155A5 33C0 xor eax, eax
:004155A7 EB05 jmp 004155AE
* Referenced by a (U)nconditional or (C)onditional Jump at Addresses:
|:00415589(C), :00415599(C)
|
:004155A9 1BC0 sbb eax, eax
:004155AB 83D8FF sbb eax, FFFFFFFF
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:004155A7(U)
|
:004155AE 85C0 test eax, eax
:004155B0 7553 jne 00415605
:004155B2 8B44240C mov eax, dword ptr [esp+0C]
:004155B6 0FBE4801 movsx ecx, byte ptr [eax+01]
:004155BA 51 push ecx
====> ? ECX=58 即：X
:004155BB E8E6D61200 call 00542CA6
====>检测第十六位（即真码第12位）是否为数字？
:004155C0 83C404 add esp, 00000004
:004155C3 85C0 test eax, eax
:004155C5 743E je 00415605
====>不能跳！ r fl z
:004155C7 8B54240C mov edx, dword ptr [esp+0C]
:004155CB 0FBE4202 movsx eax, byte ptr [edx+02]
:004155CF 50 push eax
====> ? EAX=59 即：Y
:004155D0 E8D1D61200 call 00542CA6
====>检测第十七位（即真码第13位）是否为数字？
:004155D5 83C404 add esp, 00000004
:004155D8 85C0 test eax, eax
:004155DA 7429 je 00415605
====>不能跳！ r fl z
:004155DC 8B4C240C mov ecx, dword ptr [esp+0C]
:004155E0 0FBE5103 movsx edx, byte ptr [ecx+03]
:004155E4 52 push edx
====>？EDX=5a 即：Z
:004155E5 E8BCD61200 call 00542CA6
====>检测第十八位（即真码第14位）是否为数字？
:004155EA 83C404 add esp, 00000004
:004155ED 85C0 test eax, eax
:004155EF 7414 je 00415605
====>不能跳！ r fl z
:004155F1 8B44240C mov eax, dword ptr [esp+0C]
:004155F5 0FBE08 movsx ecx, byte ptr [eax]
:004155F8 51 push ecx
====> ？ECX=57 即：W
:004155F9 E852D61200 call 00542C50
====>检测第十五位（即真码第11位）是否为字母？
:004155FE 83C404 add esp, 00000004
:00415601 85C0 test eax, eax
:00415603 7505 jne 0041560A
====>正确则跳！！
* Referenced by a (U)nconditional or (C)onditional Jump at Addresses:
|:00415525(C), :00415560(C), :00415569(C), :00415572(C), :004155B0(C)
|:004155C5(C), :004155DA(C), :004155EF(C)
|
:00415605 BF01000000 mov edi, 00000001
====>EDI置1。暴力破解改此处
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:00415603(C)
|
:0041560A 8D4C240C lea ecx, dword ptr [esp+0C]
:0041560E E8076F1400 call 0055C51A
:00415613 8D4C2414 lea ecx, dword ptr [esp+14]
:00415617 E8FE6E1400 call 0055C51A
:0041561C 8D4C2410 lea ecx, dword ptr [esp+10]
:00415620 E8F56E1400 call 0055C51A
:00415625 8D4C2418 lea ecx, dword ptr [esp+18]
:00415629 E8EC6E1400 call 0055C51A
:0041562E 5E pop esi
:0041562F 5B pop ebx
:00415630 EB05 jmp 00415637
* Referenced by a (U)nconditional or (C)onditional Jump at Addresses:
|:00415480(C), :0041548D(C), :00415496(C), :0041549F(C)
|
:00415632 BF01000000 mov edi, 00000001
====>EDI置1。暴力破解改此处！
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:00415630(U)
|
:00415637 8D4C241C lea ecx, dword ptr [esp+1C]
:0041563B E8DA6E1400 call 0055C51A
:00415640 8BC7 mov eax, edi
:00415642 5F pop edi
:00415643 83C414 add esp, 00000014
:00415646 C20400 ret 0004
—————————————————————————————————
【总 结】：
注册码共14位，与名称、E-Mail无关。形式为：??12-3437-????
第1、2位为数字。3、4位介于00-13之间。3437固定。第11位为字母。第12、13、14位为数字。
一个可用之注册码：9912-3437-X444
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【注册信息保存】：
REGEDIT4
[HKEY_CURRENT_USER\Software\RimArts\B2\License]
"Agreed"=dword:00000001
"User"="fly"
"Code"="RBK-9912-3437-X444"
"EMail"="fly4099@sohu.com"
—————————————————————————————————
【完美 爆破】：
用HIEW吧！F5去修改地址，F3进入修改状态，直接改完后F9保存，F10退出。爽！
1、00415605 BF01000000 mov edi, 00000001<----EDI置1
修改为： MOV EDI，00000000 BF01000000 改为BF00000000
2、00415632 BF01000000 mov edi, 00000001<----EDI置1
修改为： MOV EDI，00000000 BF01000000 改为BF00000000
—————————————————————————————————
Cracked By 巢水工作坊——fly
2002-9-10
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