家庭财务精灵1.0

家庭财务精灵1.0

2004/10/15 1:01:00来源:本站整理作者:蓝点我要评论(0)
【软件名称】家庭财务精灵1.0
【下载地址http://www.softfairy.com/
【应用平台】Win9x, WinME, WinNT, Win2000, WinXP, Linux/Unix
【软件限制】时间限制
【破解声明】破解只是感兴趣,无其它目的。失误之处敬请诸位大侠赐教!
【破解工具】Pescan3.31,OllyDbg1.09,Wdasm8.93
========================================================================================
【分析过程】
用Pescan检查,无壳.反汇编,查找字串,很快就找到关键点,用OD载入!
任意填入序列号12345678和注册码13572468。
----------------------------------------------------------------------------------------
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:00643611(U)
|
:0064362F 8B55FC                  mov edx, dword ptr [ebp-04]
:00643632 B8CC366400              mov eax, 006436CC
:00643637 E8E817DCFF              call 00404E24
:0064363C 85C0                    test eax, eax
:0064363E 7FD3                    jg 00643613
:00643640 FF3584D36400            push dword ptr [0064D384]
:00643646 FF3580D36400            push dword ptr [0064D380]
:0064364C 8D4DF4                  lea ecx, dword ptr [ebp-0C]
:0064364F B870D36400              mov eax, 0064D370
:00643654 8BD3                    mov edx, ebx     //序列号: 0x00bc614e
:00643656 E82D51F8FF              call 005C8788    //关键call进入==> 1
:0064365B 8D55F0                  lea edx, dword ptr [ebp-10]
:0064365E 8B45FC                  mov eax, dword ptr [ebp-04]
:00643661 E87A5DDCFF              call 004093E0
:00643666 8B45F0                  mov eax, dword ptr [ebp-10]  //伪码13572468
:00643669 50                      push eax
:0064366A 8D4DE8                  lea ecx, dword ptr [ebp-18]
:0064366D 8D45F4                  lea eax, dword ptr [ebp-0C]
:00643670 BA08000000              mov edx, 00000008
:00643675 E87240F8FF              call 005C76EC     //次call将激活码转换位ASCII码形式
:0064367A 8B45E8                  mov eax, dword ptr [ebp-18]
:0064367D 8D55EC                  lea edx, dword ptr [ebp-14]
:00643680 E85B5DDCFF              call 004093E0    
:00643685 8B55EC                  mov edx, dword ptr [ebp-14]  //激活码
:00643688 58                      pop eax                      //激活码
:00643689 E89E15DCFF              call 00404C2C
:0064368E 0F94C3                  sete bl
:00643691 33C0                    xor eax, eax
:00643693 5A                      pop edx
:00643694 59                      pop ecx
:00643695 59                      pop ecx
:00643696 648910                  mov dword ptr fs:[eax], edx
:00643699 68BB366400              push 006436BB
------------------------------------call 1 ----------------------------------------------
* Referenced by a CALL at Address:
|
:005C8788 55                      push ebp
:005C8789 8BEC                    mov ebp, esp
:005C878B 53                      push ebx
:005C878C 56                      push esi
:005C878D 57                      push edi
:005C878E 8BD9                    mov ebx, ecx
:005C8790 8BFA                    mov edi, edx
:005C8792 8BF0                    mov esi, eax
:005C8794 66C703693C              mov word ptr [ebx], 3C69
:005C8799 FF750C                  push [ebp+0C]
:005C879C FF7508                  push [ebp+08]
:005C879F E8B4FEFFFF              call 005C8658
:005C87A4 66894302                mov word ptr [ebx+02], ax
:005C87A8 897B04                  mov dword ptr [ebx+04], edi
:005C87AB 8BD3                    mov edx, ebx   //序列号: 0x00bc614e
:005C87AD 8BC6                    mov eax, esi
:005C87AF B101                    mov cl, 01
:005C87B1 E8AEF7FFFF              call 005C7F64  //算法call进入==> 2
:005C87B6 5F                      pop edi
:005C87B7 5E                      pop esi
:005C87B8 5B                      pop ebx
:005C87B9 5D                      pop ebp
:005C87BA C20800                  ret 0008
-------------------------------------call 2 ---------------------------------------------
* Referenced by a CALL at Addresses:  
|
:005C7F64 53                      push ebx
:005C7F65 56                      push esi
:005C7F66 57                      push edi
:005C7F67 83C4E8                  add esp, FFFFFFE8
:005C7F6A 884C2408                mov byte ptr [esp+08], cl

* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005C7F07(C)
|
:005C7F6E 89542404                mov dword ptr [esp+04], edx
:005C7F72 890424                  mov dword ptr [esp], eax
:005C7F75 8B442404                mov eax, dword ptr [esp+04]
:005C7F79 8B00                    mov eax, dword ptr [eax]
:005C7F7B 8944240C                mov dword ptr [esp+0C], eax
:005C7F7F 8B442404                mov eax, dword ptr [esp+04]

* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005C7F1D(C)
|
:005C7F83 8B4004                  mov eax, dword ptr [eax+04]
:005C7F86 89442410                mov dword ptr [esp+10], eax
:005C7F8A C744241404000000        mov [esp+14], 00000004  //[esp+14]=00000004
:005C7F92 BE1C946400              mov esi, 0064941C

* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005C8030(C)
|
:005C7F97 8B54240C                mov edx, dword ptr [esp+0C] //edx=0x00003c69
:005C7F9B 33C0                    xor eax, eax
:005C7F9D 8A442408                mov al, byte ptr [esp+08]
:005C7FA1 8BD8                    mov ebx, eax
:005C7FA3 03DB                    add ebx, ebx
:005C7FA5 8D1C5B                  lea ebx, dword ptr [ebx+2*ebx]
:005C7FA8 8B04DE                  mov eax, dword ptr [esi+8*ebx]
:005C7FAB 8B0C24                  mov ecx, dword ptr [esp]
:005C7FAE 8B0C81                  mov ecx, dword ptr [ecx+4*eax]  //ecx=0x64d370
:005C7FB1 8B44DE04                mov eax, dword ptr [esi+8*ebx+04]
:005C7FB5 8B3C24                  mov edi, dword ptr [esp]
:005C7FB8 8B0487                  mov eax, dword ptr [edi+4*eax]  //eax=0xd92da051
:005C7FBB 8B5CDE08                mov ebx, dword ptr [esi+8*ebx+08]
:005C7FBF 8B3C24                  mov edi, dword ptr [esp]    
:005C7FC2 8B1C9F                  mov ebx, dword ptr [edi+4*ebx] //ebx=0xb1a48361

----下面的eax ebx ecx 每次循环前是变化的,但是都是固定的参数,不随序列号变化-------
第 1 次循环前eax=0xd92da051  ebx=0xb1a48361   ecx=0x0064d370  edx=0x00003c69
第 2 次循环前eax=0xb1a48361  ebx=0xd92da051   ecx=0x91057ebe  edx=循环后的eax
第 3 次循环前eax=0x91057ebe  ebx=0x9f638ce6   ecx=0xd92da051  edx=循环后的eax
第 4 次循环前eax=0x9f638ce6  ebx=0x91057ebe   ecx=0xb1a48361  edx=循环后的eax
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005C7F5E(C)
|--------------------------------call 2 算法开始----------------------------------
:005C7FC5 03D3                    add edx, ebx    //edx=edx+ebx
:005C7FC7 03DA                    add ebx, edx    //ebx=ebx+edx
:005C7FC9 8BFA                    mov edi, edx    //edi=edx
:005C7FCB C1EF07                  shr edi, 07     //edi=edi逻辑右移0x7
:005C7FCE 33D7                    xor edx, edi    //edx=edx xor edi
:005C7FD0 03CA                    add ecx, edx    //ecx=ecx+edx
:005C7FD2 03D1                    add edx, ecx    //edx=edx+ecx
:005C7FD4 8BF9                    mov edi, ecx    //edi=ecx
:005C7FD6 C1E70D                  shl edi, 0D     //edi=edi << 0xd
:005C7FD9 33CF                    xor ecx, edi    //ecx=ecx xor edi
:005C7FDB 03C1                    add eax, ecx    //eax=eax+ecx
:005C7FDD 03C8                    add ecx, eax    //ecx=ecx+eax
:005C7FDF 8BF8                    mov edi, eax    //edi=eax
:005C7FE1 C1EF11                  shr edi, 11     //edi=edi >> 0x11
:005C7FE4 33C7                    xor eax, edi    //eax=eax xor edi
:005C7FE6 03D8                    add ebx, eax    //ebx=ebx+eax
:005C7FE8 03C3                    add eax, ebx    //eax=eax+ebx
:005C7FEA 8BFB                    mov edi, ebx    //edi=ebx
:005C7FEC C1E709                  shl edi, 09     //edi=edi << 0x9
:005C7FEF 33DF                    xor ebx, edi    //ebx=ebx xor edi
:005C7FF1 03D3                    add edx, ebx    //edx=edx+ebx
:005C7FF3 03DA                    add ebx, edx    //ebx=ebx+edx
:005C7FF5 8BFA                    mov edi, edx    //edi=edx
:005C7FF7 C1EF03                  shr edi, 03     //edi=edi >> 0x3
:005C7FFA 33D7                    xor edx, edi    //edx=edx xor edi
:005C7FFC 03CA                    add ecx, edx    //ecx=ecx+edx
:005C7FFE 8BD1                    mov edx, ecx    //edx=ecx
:005C8000 C1E207                  shl edx, 07     //edx=edx << 0x7
:005C8003 33CA                    xor ecx, edx    //ecx=ecx xor edx
:005C8005 03C1                    add eax, ecx    //eax=eax+ecx
:005C8007 8BD3                    mov edx, ebx    //edx=ebx
:005C8009 C1EA0F                  shr edx, 0F     //edx=edx >>0xf
:005C800C 33C2                    xor eax, edx    //eax=eax xor edx
:005C800E 03D8                    add ebx, eax    //ebx=ebx+eax
:005C8010 8BC3                    mov eax, ebx    //eax=ebx
:005C8012 C1E00B                  shl eax, 0B     //eax=eax << 0xb
:005C8015 33D8                    xor ebx, eax    //ebx=ebx xor eax
:005C8017 8B442410                mov eax, dword ptr [esp+10]  //eax=序列号
:005C801B 33C3                    xor eax, ebx    //eax=eax xor ebx
:005C801D 8B54240C                mov edx, dword ptr [esp+0C]  //edx=0x00003c69
:005C8021 89542410                mov dword ptr [esp+10], edx  //[esp+10]=edx
:005C8025 8944240C                mov dword ptr [esp+0C], eax  //[esp+0c]=eax
:005C8029 83C60C                  add esi, 0000000C
:005C802C FF4C2414                dec [esp+14]  //[esp+14]-1
:005C8030 0F8561FFFFFF            jne 005C7F97  //不等于0继续循环
:005C8036 8B442404                mov eax, dword ptr [esp+04]  
:005C803A 8B542410                mov edx, dword ptr [esp+10] //edx=激活码第一部分
:005C803E 8910                    mov dword ptr [eax], edx
:005C8040 8B442404                mov eax, dword ptr [esp+04]
:005C8044 8B54240C                mov edx, dword ptr [esp+0C] //edx=激活码第二部分
:005C8048 895004                  mov dword ptr [eax+04], edx
:005C804B 83C418                  add esp, 00000018
:005C804E 5F                      pop edi
:005C804F 5E                      pop esi
:005C8050 5B                      pop ebx
:005C8051 C3                      ret

========================================================================================
【分析总结】
运算前 eax=0xd92da051 ebx=0xb1a48361 ecx=0x9f638ce6 edx=0x00003c69   
h1=0xbc614e(序列号16进制)    h2=0x00003c69  
----------------------------------------------------------------------------------------
k1=edx+ebx   k2=ebx+k1  k3=edx >> 0x7  k4=k1 xor k3
m1=ecx+k4    m2=k4+m1   m3=m1 << 0x0d  m4=m1 xor m3
s1=eax+M4    s2=m4+s1   s3=s1 >> 0x11  s4=s1 xor s3
u1=k2+s4     u2=s4+u1   u3=u1 << 0x09  u4=u1 xor u3
f1=m2+u4     f2=u4+f1   f3=f1 >> 0x3   f4=f1 xor f3
g1=s2+f4                g2=g1 << 0x7   g3=g1 xor g2
l1=u2+g3                l2=f2 >> 0xf   l3=l1 xor l2
n1=f2+l3                n2=n1 << 0xb   n3=n1 xor n2
eax=h1 xor n3   h1=h2  h2=eax  edx=h2
----------------------------------------------------------------------------------------
以上是算法的第一步,将以上计算再循环3遍(哎,作者也不累啊,我都转晕了)
第 1 次循环前eax=0xb1a48361  ebx=0xd92da051   ecx=0x91057ebe  edx=h2(1)
第 2 次循环前eax=0x91057ebe  ebx=0x9f638ce6   ecx=0xd92da051  edx=h2(2)
第 3 次循环前eax=0x9f638ce6  ebx=0x91057ebe   ecx=0xb1a48361  edx=h2(3)
上面这些参数除edx外都是固定的.
--------------------------------------------------
经过循环运算后得出:  
h1=20ed1b35 依次从后两位取得出351bed20 = 注册码第1部分.  
h2=e35b8793 依次从后两位取得出93875be3 = 注册码第2部分.
两部分合起来就是注册码了.

一组可用的注册信息:
序列号:12345678
激活码:351BED2093875BE3

注册信息保存:REGISTRATION.DAT文件中

注册机:  
中断地址:643688
中断次数:2
第一字节:58
指令长度:1  
内存方式:EAX              

    
    
     
    
    

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