• 标 题:VirTime HTMLock V1.4.0 破解之暴力篇 (7千字)
  • 作 者:paulyoung
  • 时 间:2001-5-6 4:21:13
  • 链 接:http://bbs.pediy.com

VirTime HTMLock V1.4.0 破解之暴力篇

作    者:PaulYoung
时    间:2001.05.05 凌晨
软件简介:帮助您创建基于 JavaScript 的密码保护页面
DOWNLOAD: http://www.inhua.com/down/htl.zip
破解工具:RegMon,TRW 2000 V1.03,HIEW V6.55

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  今天下载了一个 VirTime HTMLock V1.4.0 ,本来想搞定它的注册码,可惜自己汇编水平有限,且现在已是夜深人静了,无奈何,先暴力解决它,哪位大虾有兴趣再算算它的注册码吧。
  (注:这个软件注册码采用了实时检验模式,注册码不正确则 OK 键禁用。)
  
  一、用 RegMon 监视,运行软件,发觉它读取如下两个注册表键值:

HKLM\SOFTWARE\VirTime\HTL1.4.0\UserName    SUCCESS    "NOBODY"  (用户名)
HKLM\SOFTWARE\VirTime\HTL1.4.0\RegKey    SUCCESS    "NOKEY"  (注册码)

  我想它会不会是启动时读取这两个键值并正确与否,来判断它是否为注册版,后经我反汇编分析,证实了我的猜测(分析过程略)
  
  二、打开 REGEDIT ,把这两个键值分别改为 "PaulYoung" and "78787878"
  三、用 TRW 2000 LOAD 此软件,F10 单步分析,如下:

//******************** Program Entry Point ********
:004630EC 55                      push ebp
:004630ED 8BEC                    mov ebp, esp
:004630EF 83C4F4                  add esp, FFFFFFF4
:004630F2 B8642F4600              mov eax, 00462F64
:004630F7 E8042FFAFF              call 00406000
:004630FC A138574600              mov eax, dword ptr [00465738]
:00463101 8B00                    mov eax, dword ptr [eax]

* Possible StringData Ref from Code Obj ->"HTMLock"
                                  |
:00463103 BA6C314600              mov edx, 0046316C
:00463108 E81B18FEFF              call 00444928
:0046310D E896DEFFFF              call 00460FA8      //好面善哦,F8 跟进看一看
:00463112 84C0                    test al, al
:00463114 7446                    je 0046315C

***************
* Referenced by a CALL at Address:
|:0046310D 
|
:00460FA8 55                      push ebp
:00460FA9 8BEC                    mov ebp, esp
:00460FAB 6A00                    push 00000000
:00460FAD 6A00                    push 00000000
:00460FAF 6A00                    push 00000000

...

F10直到

...

:0046102A B9C8104600              mov ecx, 004610C8
:0046102F 8B15E8684600            mov edx, dword ptr [004668E8]
:00461035 E85E2CFAFF              call 00403C98
:0046103A C605F068460000          mov byte ptr [004668F0], 00
:00461041 C6050869460000          mov byte ptr [00466908], 00
:00461048 E87FFDFFFF              call 00460DCC
:0046104D 8B15F4684600            mov edx, dword ptr [004668F4]
:00461053 A1F8684600              mov eax, dword ptr [004668F8]
:00461058 E827EBFFFF              call 0045FB84              //D EAX=假注册码(F8 跟进看一看)


********
* Referenced by a CALL at Addresses:
|:004609C3  , :00460A3F  , :00460C82  , :00461058 
|
:0045FB84 55                      push ebp
:0045FB85 8BEC                    mov ebp, esp
:0045FB87 83C4F8                  add esp, FFFFFFF8
:0045FB8A 53                      push ebx
:0045FB8B 56                      push esi
:0045FB8C 33C9                    xor ecx, ecx
:0045FB8E 894DF8                  mov dword ptr [ebp-08], ecx
:0045FB91 8BDA                    mov ebx, edx
:0045FB93 8BF0                    mov esi, eax
:0045FB95 33C0                    xor eax, eax
:0045FB97 55                      push ebp
:0045FB98 681EFC4500              push 0045FC1E
:0045FB9D 64FF30                  push dword ptr fs:[eax]
:0045FBA0 648920                  mov dword ptr fs:[eax], esp
:0045FBA3 C645FF00                mov [ebp-01], 00
:0045FBA7 8BC3                    mov eax, ebx
:0045FBA9 E89E40FAFF              call 00403C4C
:0045FBAE 83F802                  cmp eax, 00000002
:0045FBB1 7C55                    jl 0045FC08
:0045FBB3 8BC6                    mov eax, esi
:0045FBB5 E89240FAFF              call 00403C4C
:0045FBBA 83F824                  cmp eax, 00000024      //注册码是否为36位 
:0045FBBD 7C49                    jl 0045FC08            //9090 NOP 掉(@ Offset 0005EFBDh)
:0045FBBF 33DB                    xor ebx, ebx
:0045FBC1 8BC6                    mov eax, esi
:0045FBC3 E88440FAFF              call 00403C4C
:0045FBC8 83E802                  sub eax, 00000002
:0045FBCB 85C0                    test eax, eax
:0045FBCD 7E0F                    jle 0045FBDE
:0045FBCF BA01000000              mov edx, 00000001

* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:0045FBDC(C)
|
:0045FBD4 8A4C16FF                mov cl, byte ptr [esi+edx-01]
:0045FBD8 02D9                    add bl, cl
:0045FBDA 42                      inc edx
:0045FBDB 48                      dec eax
:0045FBDC 75F6                    jne 0045FBD4    (跟踪时要下 r fl z ,否则不能跟下去)

* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:0045FBCD(C)
|
:0045FBDE 33C0                    xor eax, eax
:0045FBE0 8AC3                    mov al, bl
:0045FBE2 33D2                    xor edx, edx
:0045FBE4 52                      push edx
:0045FBE5 50                      push eax
:0045FBE6 8D45F8                  lea eax, dword ptr [ebp-08]
:0045FBE9 E85AFEFFFF              call 0045FA48
:0045FBEE 8B45F8                  mov eax, dword ptr [ebp-08]
:0045FBF1 8A400E                  mov al, byte ptr [eax+0E]
:0045FBF4 3A4622                  cmp al, byte ptr [esi+22]       //比较第35位(比较是否为 "i" )
:0045FBF7 750F                    jne 0045FC08             //750F改为740F (@ Offset 0005EFF7h)
:0045FBF9 8B45F8                  mov eax, dword ptr [ebp-08]
:0045FBFC 8A400F                  mov al, byte ptr [eax+0F]
:0045FBFF 3A4623                  cmp al, byte ptr [esi+23]      //比较第36位(比较是否为"D" )
:0045FC02 7504                    jne 0045FC08              //7504改为7404 (@ Offset 5F002h)
:0045FC04 C645FF01                mov [ebp-01], 01                //程序走到这里就可以注册成功了

* Referenced by a (U)nconditional or (C)onditional Jump at Addresses:
|:0045FBB1(C), :0045FBBD(C), :0045FBF7(C), :0045FC02(C)
|
:0045FC08 33C0                    xor eax, eax
:0045FC0A 5A                      pop edx


*****

:0046312E E8BDDAFFFF              call 00460BF0
:00463133 84C0                    test al, al
:00463135 7514                    jne 0046314B
:00463137 8B1570554600            mov edx, dword ptr [00465570]
:0046313D 8B12                    mov edx, dword ptr [edx]
:0046313F A170554600              mov eax, dword ptr [00465570]
:00463144 8B00                    mov eax, dword ptr [eax]
:00463146 E885F7FFFF              call 004628D0

* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:00463135(C)
|
:0046314B A138574600              mov eax, dword ptr [00465738]
:00463150 8B00                    mov eax, dword ptr [eax]
:00463152 E8351CFEFF              call 00444D8C                //弹出软件运行界面


  "This program is registered to PaulYoung.Thank you for useing this program."

  YEAH!!!!!!!!  zzzzZZZZZZZZ(你干什么?我想睡觉!!!!!:D )   

  由于小弟学习 Crack 没几天,且这个软件我还未使用过,如有错误之处,望各位大侠指出,多谢多谢!!

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