网站推广专家V1.26专业版 算法分析

简单算法——网站推广专家V1.26专业版

呵呵，小猫上网，若总是从网上DOWN软件会让我破产的，^-^ 所以从《软件王》的光盘里找些东西来练手。唉，羡慕那些宽带上网的哥们。

下载地址：http://www.csmarket.com/

软件大小：1M多

【软件简介】：推荐你的资料到各大网站。类似《商务奇兵》。

【软件限制】：功能限制。

【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！

【破解工具】：TRW2000娃娃修改版、FI2.5、AspackDie、W32Dasm8.93黄金版

—————————————————————————————

【过 程】：

呵呵，老规矩，先运行注册一下，看看作者给的提示。

有壳先脱壳，反汇编，TRW伺候！

—————————————————————————————

一、脱壳

websumbit.exe是ASPACK 2.11壳，用AspackDie脱之，686K->25.5M,奇怪了。

当然接着反汇编了。

—————————————————————————————

二、调试

TRW装入目标程序。

填好试炼信息

机器码：A21431E0-291（程序自给）

用户名：fly

注册码：13572468

CTRL+D切入调试界面，下BPX HMEMCPY，F5返回程序，点“现在注册”，拦下！

BD，暂停断点。PMODULE，直达程序领空。F12七次，我们来到00529DBE处！

:00529DBE 8B55FC mov edx, dword ptr [ebp-04]

====>来到这儿！

:00529DC1 B8F0755800 mov eax, 005875F0

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

|:00529D5F(C)

|

:00529DC6 E8F19FEDFF call 00403DBC

:00529DCB 8D55F8 lea edx, dword ptr [ebp-08]

:00529DCE 8B83E8020000 mov eax, dword ptr [ebx+000002E8]

:00529DD4 E87F85F0FF call 00432358

:00529DD9 8B55F8 mov edx, dword ptr [ebp-08]

:00529DDC B8F8755800 mov eax, 005875F8

:00529DE1 E8D69FEDFF call 00403DBC

:00529DE6 A12C985700 mov eax, dword ptr [0057982C]

:00529DEB 8B15F0755800 mov edx, dword ptr [005875F0]

:00529DF1 E8C69FEDFF call 00403DBC

:00529DF6 FF0514765800 inc dword ptr [00587614]

:00529DFC 833D1476580003 cmp dword ptr [00587614], 00000003

:00529E03 7E0F jle 00529E14

:00529E05 C7833402000002000000 mov dword ptr [ebx+00000234], 00000002

:00529E0F E9A5000000 jmp 00529EB9

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

|:00529E03(C)

|

:00529E14 A1049C5700 mov eax, dword ptr [00579C04]

:00529E19 8B00 mov eax, dword ptr [eax]

:00529E1B E8982E0000 call 0052CCB8

====>关键CALL！F8进入！

:00529E20 84C0 test al, al

:00529E22 7447 je 00529E6B

====>跳则OVER！

:00529E24 A1949B5700 mov eax, dword ptr [00579B94]

:00529E29 C70001000000 mov dword ptr [eax], 00000001

:00529E2F A1B0995700 mov eax, dword ptr [005799B0]

:00529E34 C70001000000 mov dword ptr [eax], 00000001

:00529E3A 8BC3 mov eax, ebx

:00529E3C E883FEFFFF call 00529CC4

:00529E41 A1049C5700 mov eax, dword ptr [00579C04]

:00529E46 8B00 mov eax, dword ptr [eax]

:00529E48 8B8008030000 mov eax, dword ptr [eax+00000308]

:00529E4E 33D2 xor edx, edx

:00529E50 E8FF8CF1FF call 00442B54

:00529E55 A100765800 mov eax, dword ptr [00587600]

:00529E5A E86DDEF2FF call 00457CCC

====>恭喜成功！

:00529E5F A1E8755800 mov eax, dword ptr [005875E8]

:00529E64 E8DB38F2FF call 0044D744

:00529E69 EB4E jmp 00529EB9

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

|:00529E22(C)

|

:00529E6B A1949B5700 mov eax, dword ptr [00579B94]

:00529E70 33D2 xor edx, edx

:00529E72 8910 mov dword ptr [eax], edx

:00529E74 A1B0995700 mov eax, dword ptr [005799B0]

:00529E79 33D2 xor edx, edx

:00529E7B 8910 mov dword ptr [eax], edx

:00529E7D A1049C5700 mov eax, dword ptr [00579C04]

:00529E82 8B00 mov eax, dword ptr [eax]

:00529E84 8B8008030000 mov eax, dword ptr [eax+00000308]

:00529E8A B201 mov dl, 01

:00529E8C E8C38CF1FF call 00442B54

:00529E91 6A10 push 00000010

:00529E93 A1A09A5700 mov eax, dword ptr [00579AA0]

:00529E98 8B00 mov eax, dword ptr [eax]

:00529E9A 8B0D10765800 mov ecx, dword ptr [00587610]

:00529EA0 8B150C765800 mov edx, dword ptr [0058760C]

:00529EA6 E82D6BF2FF call 004509D8

====>错了！

--------------------------------------------------------

F8进入关键CALL：00529E1B call 0052CCB8

* Referenced by a CALL at Addresses:

|:00529E1B , :0052CBD7

|

:0052CCB8 55 push ebp

:0052CCB9 8BEC mov ebp, esp

:0052CCBB B905000000 mov ecx, 00000005

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

|:0052CCC5(C)

|

:0052CCC0 6A00 push 00000000

:0052CCC2 6A00 push 00000000

:0052CCC4 49 dec ecx

:0052CCC5 75F9 jne 0052CCC0

====>上面循环代码的作用是什么？请赐教！

:0052CCC7 53 push ebx

:0052CCC8 56 push esi

:0052CCC9 57 push edi

:0052CCCA 33C0 xor eax, eax

:0052CCCC 55 push ebp

:0052CCCD 683BCF5200 push 0052CF3B

:0052CCD2 64FF30 push dword ptr fs:[eax]

:0052CCD5 648920 mov dword ptr fs:[eax], esp

:0052CCD8 8D45F0 lea eax, dword ptr [ebp-10]

* Possible StringData Ref from Code Obj ->"sef1sn8y3420dnu2ofps"

====>注意此字符串！

:0052CCDB BA54CF5200 mov edx, 0052CF54

====>sef1sn8y3420dnu2ofps入EDX

:0052CCE0 E81B71EDFF call 00403E00

:0052CCE5 8D45F4 lea eax, dword ptr [ebp-0C]

:0052CCE8 E87B70EDFF call 00403D68

:0052CCED 8B15309A5700 mov edx, dword ptr [00579A30]

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

|:0052CC8F(C)

|

:0052CCF3 8B12 mov edx, dword ptr [edx]

====>用户名入EDX

:0052CCF5 8D45EC lea eax, dword ptr [ebp-14]

:0052CCF8 8B0D703C1301 mov ecx, dword ptr [01133C70]

====>机器码A21431E0-291入ECX

:0052CCFE E83173EDFF call 00404034

:0052CD03 8B45EC mov eax, dword ptr [ebp-14]

:0052CD06 E8DD72EDFF call 00403FE8

:0052CD0B A1703C1301 mov eax, dword ptr [01133C70]

====>机器码入EAX

:0052CD10 E8D372EDFF call 00403FE8

:0052CD15 8BF0 mov esi, eax

:0052CD17 85F6 test esi, esi

====>？ ESI=C，循环次数。

:0052CD19 0F8EB0000000 jle 0052CDCF

:0052CD1F BB01000000 mov ebx, 00000001

====>EBX第一次是1，记数器。

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

呵呵，循环运算开始了！

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

|:0052CDC9(C)

|

:0052CD24 8D45E8 lea eax, dword ptr [ebp-18]

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

|:0052CCB2(C)

|

:0052CD27 50 push eax

:0052CD28 B901000000 mov ecx, 00000001

:0052CD2D 8BD3 mov edx, ebx

:0052CD2F A1703C1301 mov eax, dword ptr [01133C70]

====>机器码A21431E0-291入EAX

:0052CD34 E8B774EDFF call 004041F0

:0052CD39 8B45E8 mov eax, dword ptr [ebp-18]

====>从机器码中依次取字符

:0052CD3C E86B74EDFF call 004041AC

:0052CD41 8BF8 mov edi, eax

:0052CD43 A1309A5700 mov eax, dword ptr [00579A30]

:0052CD48 8B00 mov eax, dword ptr [eax]

====>EAX=fly

:0052CD4A E89972EDFF call 00403FE8

:0052CD4F 3BD8 cmp ebx, eax

:0052CD51 7F23 jg 0052CD76

====>此处如果用户名不够12位，

则跳到52CD76处，从程序给的字符串sef1sn8y3420dnu2ofps接着取字符，

（已减去用户名的位数，如：接着fly后取1sn8y3420），直至共12位为止！

:0052CD53 8D45E4 lea eax, dword ptr [ebp-1C]

:0052CD56 50 push eax

:0052CD57 A1309A5700 mov eax, dword ptr [00579A30]

:0052CD5C 8B00 mov eax, dword ptr [eax]

:0052CD5E B901000000 mov ecx, 00000001

:0052CD63 8BD3 mov edx, ebx

:0052CD65 E88674EDFF call 004041F0

:0052CD6A 8B45E4 mov eax, dword ptr [ebp-1C]

====>fly入EAX

:0052CD6D E83A74EDFF call 004041AC

:0052CD72 8BD0 mov edx, eax

====>fly入EDX

:0052CD74 EB1D jmp 0052CD93

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

|:0052CD51(C)

|

:0052CD76 8D45E0 lea eax, dword ptr [ebp-20]

:0052CD79 50 push eax

:0052CD7A B901000000 mov ecx, 00000001

:0052CD7F 8BD3 mov edx, ebx

:0052CD81 8B45F0 mov eax, dword ptr [ebp-10]

====>D EAX=sef1sn8y3420dnu2ofps

:0052CD84 E86774EDFF call 004041F0

:0052CD89 8B45E0 mov eax, dword ptr [ebp-20]

:0052CD8C E81B74EDFF call 004041AC

:0052CD91 8BD0 mov edx, eax

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

|:0052CD74(U)

分别循环取机器码和注册名的HEX值！

:0052CD93 8A07 mov al, byte ptr [edi]

====>1、？AL=41

====>1、？AL=32

====>1、？AL=31

………… 依次取机器码

:0052CD95 8A12 mov dl, byte ptr [edx]

====>依次取用户名。

====>1、？DL=66 即f的HEX值

====>2、？DL=6C 即l的HEX值

====>3、？DL=79 即y的HEX值

…………

……接着再从1sn8y3420取九位，共12位！

:0052CD97 3C41 cmp al, 41

====>如果AL=41则下面不跳

:0052CD99 7502 jne 0052CD9D

:0052CD9B B066 mov al, 66

====>则把66移入AL，取代41。

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

|:0052CD99(C)

|

:0052CD9D 8BF8 mov edi, eax

:0052CD9F 81E7FF000000 and edi, 000000FF

:0052CDA5 33C0 xor eax, eax

:0052CDA7 8AC2 mov al, dl

====>DL入AL

:0052CDA9 03F8 add edi, eax

====>1、EDI=66+66=CC

====>2、EDI=32+6C=9E

====>3、EDI=34+79=AA

…………

:0052CDAB 03FB add edi, ebx

====>EBX是次数

====>1、EDI=CC+1=CD

====>2、EDI=9E+2=A0

====>3、EDI=AA+3=AD

…………

:0052CDAD 8D4DDC lea ecx, dword ptr [ebp-24]

:0052CDB0 BA02000000 mov edx, 00000002

:0052CDB5 8BC7 mov eax, edi

:0052CDB7 E8ECCDEDFF call 00409BA8

:0052CDBC 8B55DC mov edx, dword ptr [ebp-24]

:0052CDBF 8D45F8 lea eax, dword ptr [ebp-08]

:0052CDC2 E82972EDFF call 00403FF0

:0052CDC7 43 inc ebx

====>EBX增1

:0052CDC8 4E dec esi

====>ESI（12次）减1

:0052CDC9 0F8555FFFFFF jne 0052CD24

====>没完？继续循环！

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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

|:0052CD19(C)

|

:0052CDCF 8B45F8 mov eax, dword ptr [ebp-08]

====>循环后得出的字符串：

CDA0AD69ABA584B16970766D

:0052CDD2 E81172EDFF call 00403FE8

:0052CDD7 8D45FC lea eax, dword ptr [ebp-04]

:0052CDDA 8B55F8 mov edx, dword ptr [ebp-08]

:0052CDDD E81E70EDFF call 00403E00

:0052CDE2 8B45FC mov eax, dword ptr [ebp-04]

:0052CDE5 E8FE71EDFF call 00403FE8

:0052CDEA 8BF0 mov esi, eax

:0052CDEC 85F6 test esi, esi

:0052CDEE 0F8EF6000000 jle 0052CEEA

:0052CDF4 BB01000000 mov ebx, 00000001

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

下面这段代码的作用是把上面生成的字符串中的：

A替换成M、1->O（4F）、2->3、r->7、4->J、5->6、8->D、0（30H）->M、E->D

所以：CDA0AD69ABA584B16970766D->CDMMMD69MBM6DJBO697M766D

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

|:0052CEE4(C)

|

:0052CDF9 8B45FC mov eax, dword ptr [ebp-04]

:0052CDFC 807C18FF41 cmp byte ptr [eax+ebx-01], 41

:0052CE01 750D jne 0052CE10

:0052CE03 8D45FC lea eax, dword ptr [ebp-04]

:0052CE06 E8AD73EDFF call 004041B8

:0052CE0B C64418FF4D mov [eax+ebx-01], 4D

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

|:0052CE01(C)

|

:0052CE10 8B45FC mov eax, dword ptr [ebp-04]

:0052CE13 807C18FF31 cmp byte ptr [eax+ebx-01], 31

:0052CE18 750D jne 0052CE27

:0052CE1A 8D45FC lea eax, dword ptr [ebp-04]

:0052CE1D E89673EDFF call 004041B8

:0052CE22 C64418FF4F mov [eax+ebx-01], 4F

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

|:0052CE18(C)

|

:0052CE27 8B45FC mov eax, dword ptr [ebp-04]

:0052CE2A 807C18FF32 cmp byte ptr [eax+ebx-01], 32

:0052CE2F 750D jne 0052CE3E

:0052CE31 8D45FC lea eax, dword ptr [ebp-04]

:0052CE34 E87F73EDFF call 004041B8

:0052CE39 C64418FF33 mov [eax+ebx-01], 33

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

|:0052CE2F(C)

|

:0052CE3E 8B45FC mov eax, dword ptr [ebp-04]

:0052CE41 807C18FF72 cmp byte ptr [eax+ebx-01], 72

:0052CE46 750D jne 0052CE55

:0052CE48 8D45FC lea eax, dword ptr [ebp-04]

:0052CE4B E86873EDFF call 004041B8

:0052CE50 C64418FF37 mov [eax+ebx-01], 37

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

|:0052CE46(C)

|

:0052CE55 8B45FC mov eax, dword ptr [ebp-04]

:0052CE58 807C18FF34 cmp byte ptr [eax+ebx-01], 34

:0052CE5D 750D jne 0052CE6C

:0052CE5F 8D45FC lea eax, dword ptr [ebp-04]

:0052CE62 E85173EDFF call 004041B8

:0052CE67 C64418FF4A mov [eax+ebx-01], 4A

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

|:0052CE5D(C)

|

:0052CE6C 8B45FC mov eax, dword ptr [ebp-04]

:0052CE6F 807C18FF35 cmp byte ptr [eax+ebx-01], 35

:0052CE74 750D jne 0052CE83

:0052CE76 8D45FC lea eax, dword ptr [ebp-04]

:0052CE79 E83A73EDFF call 004041B8

:0052CE7E C64418FF36 mov [eax+ebx-01], 36

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

|:0052CE74(C)

|

:0052CE83 8B45FC mov eax, dword ptr [ebp-04]

:0052CE86 807C18FF38 cmp byte ptr [eax+ebx-01], 38

:0052CE8B 750D jne 0052CE9A

:0052CE8D 8D45FC lea eax, dword ptr [ebp-04]

:0052CE90 E82373EDFF call 004041B8

:0052CE95 C64418FF44 mov [eax+ebx-01], 44

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

|:0052CE8B(C)

|

:0052CE9A 8B45FC mov eax, dword ptr [ebp-04]

:0052CE9D 807C18FF30 cmp byte ptr [eax+ebx-01], 30

:0052CEA2 750D jne 0052CEB1

:0052CEA4 8D45FC lea eax, dword ptr [ebp-04]

:0052CEA7 E80C73EDFF call 004041B8

:0052CEAC C64418FF4D mov [eax+ebx-01], 4D

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

|:0052CEA2(C)

|

:0052CEB1 8B45FC mov eax, dword ptr [ebp-04]

:0052CEB4 807C18FF45 cmp byte ptr [eax+ebx-01], 45

:0052CEB9 750D jne 0052CEC8

:0052CEBB 8D45FC lea eax, dword ptr [ebp-04]

:0052CEBE E8F572EDFF call 004041B8

:0052CEC3 C64418FF44 mov [eax+ebx-01], 44

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

|:0052CEB9(C)

|

:0052CEC8 8D45D8 lea eax, dword ptr [ebp-28]

:0052CECB 8B55FC mov edx, dword ptr [ebp-04]

:0052CECE 8A541AFF mov dl, byte ptr [edx+ebx-01]

:0052CED2 E83970EDFF call 00403F10

:0052CED7 8B55D8 mov edx, dword ptr [ebp-28]

:0052CEDA 8D45F4 lea eax, dword ptr [ebp-0C]

:0052CEDD E80E71EDFF call 00403FF0

:0052CEE2 43 inc ebx

:0052CEE3 4E dec esi

:0052CEE4 0F850FFFFFFF jne 0052CDF9

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

下面进行比较了！原先我以为是变量比较，呵呵，谁知还是明码比较！

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

|:0052CDEE(C)

|

:0052CEEA A1C09A5700 mov eax, dword ptr [00579AC0]

:0052CEEF 8B00 mov eax, dword ptr [eax]

====>D EAX=13572468

:0052CEF1 8B55F4 mov edx, dword ptr [ebp-0C]

====>D EDX=CDMMMD69MBM6DJBO697M766D

:0052CEF4 E8FF71EDFF call 004040F8

====>比较CALL！

:0052CEF9 7523 jne 0052CF1E

====>跳则OVER！

:0052CEFB B301 mov bl, 01

:0052CEFD A1B4975700 mov eax, dword ptr [005797B4]

:0052CF02 8B15309A5700 mov edx, dword ptr [00579A30]

:0052CF08 8B12 mov edx, dword ptr [edx]

:0052CF0A E8AD6EEDFF call 00403DBC

:0052CF0F A144985700 mov eax, dword ptr [00579844]

:0052CF14 8B55F4 mov edx, dword ptr [ebp-0C]

:0052CF17 E8A06EEDFF call 00403DBC

:0052CF1C EB02 jmp 0052CF20

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

|:0052CEF9(C)

|

:0052CF1E 33DB xor ebx, ebx

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

|:0052CF1C(U)

|

:0052CF20 33C0 xor eax, eax

:0052CF22 5A pop edx

:0052CF23 59 pop ecx

:0052CF24 59 pop ecx

:0052CF25 648910 mov dword ptr fs:[eax], edx

:0052CF28 6842CF5200 push 0052CF42

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

|:0052CF40(U)

|

:0052CF2D 8D45D8 lea eax, dword ptr [ebp-28]

:0052CF30 BA0A000000 mov edx, 0000000A

:0052CF35 E8526EEDFF call 00403D8C

:0052CF3A C3 ret

--------------------------------------------------------

F8进入比较CALL：0052CEF4 call 004040F8

搞没搞错，这么多的地方查看此处！！！

如果想爆破只有从这里面想办法了，否则很难爆破完全！

* Referenced by a CALL at Addresses:

|:00413AE3 , :00418A0F , :00419E7F , :0041F1D1 , :004204DC

|:0042B2AE , :004313BA , :00431445 , :00432175 , :004323B0

…… ……省 略…… ……

:004040F8 53 push ebx

:004040F9 56 push esi

:004040FA 57 push edi

:004040FB 89C6 mov esi, eax

:004040FD 89D7 mov edi, edx

:004040FF 39D0 cmp eax, edx

====>D EAX=试炼码

====>D EDX=真码！！

:00404101 0F848F000000 je 00404196

:00404107 85F6 test esi, esi

:00404109 7468 je 00404173

:0040410B 85FF test edi, edi

:0040410D 746B je 0040417A

:0040410F 8B46FC mov eax, dword ptr [esi-04]

:00404112 8B57FC mov edx, dword ptr [edi-04]

:00404115 29D0 sub eax, edx

:00404117 7702 ja 0040411B

…… ……省 略…… ……

:0040416F 01C0 add eax, eax

:00404171 EB23 jmp 00404196

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

|:00404109(C)

|

:00404173 8B57FC mov edx, dword ptr [edi-04]

:00404176 29D0 sub eax, edx

:00404178 EB1C jmp 00404196

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

|:0040410D(C)

|

:0040417A 8B46FC mov eax, dword ptr [esi-04]

:0040417D 29D0 sub eax, edx

:0040417F EB15 jmp 00404196

—————————————————————————————

【KeyMake之内存注册机】：

中断地址：52CEF4

中断次数：1

第一字节：E8

指令长度：5

中断地址：4040FF

中断次数：1

第一字节：39

指令长度：2

内存方式：EDX

—————————————————————————————

【注册信息保存】：

[HKEY_USERS\.DEFAULT\Software\Osb\Demo]

"Name"="fly"

"Pass"="CDMMMD69MBM6DJBO697M766D"

—————————————————————————————

【整 理】：

机器码：A21431E0-291

用户名：fly

注册码：CDMMMD69MBM6DJBO697M766D

—————————————————————————————

【后 记】：

呵呵，虽然显示“注册成功”了，且注册菜单变灰，但是程序标题栏上的“未注册状态”依然存在！不知道为何？

—————————————————————————————

Cracked By 巢水工作坊——fly【OCN】

2003-2-4

（出处：赢政天下整理收藏）

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