献给所有爱好破解的初学者的Crackme - by 破解爱好者
crackme:
http://bbs.pediy.com/upload/2005/37/files/cm1.rar
原来KuNgBiM老大已经在看雪贴了。没有注意。
帖子连接：
http://bbs.pediy.com/showthread.php?s=&threadid=15209
下断方法：__vbaLenBstr
00403582 . 51 push ecx ; /Arg1
00403583 . FF15 18104000 call dword ptr ds:[<&MSVBVM60.__vbaLenBstr>] ; \__vbaLenBstr
00403589 . 8D4E 70 lea ecx,dword ptr ds:[esi+70]
0040358C . 8D55 A0 lea edx,dword ptr ss:[ebp-60]
0040358F . 8945 A8 mov dword ptr ss:[ebp-58],eax
00403592 . C745 A0 0300000>mov dword ptr ss:[ebp-60],3
00403599 . FF15 0C104000 call dword ptr ds:[<&MSVBVM60.__vbaVarMove>] ; MSVBVM60.__vbaVarMove
0040359F . 8D4D D8 lea ecx,dword ptr ss:[ebp-28]
004035A2 . FF15 DC104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeStr>] ; MSVBVM60.__vbaFreeStr
004035A8 . 8D4D D0 lea ecx,dword ptr ss:[ebp-30]
004035AB . FF15 E0104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeObj>] ; MSVBVM60.__vbaFreeObj
004035B1 > 8B96 80000000 mov edx,dword ptr ds:[esi+80] ; 循环开始
004035B7 . 8D45 A0 lea eax,dword ptr ss:[ebp-60]
004035BA . 50 push eax
004035BB . 8D46 70 lea eax,dword ptr ds:[esi+70]
004035BE . 50 push eax
004035BF . 8955 A8 mov dword ptr ss:[ebp-58],edx
004035C2 . C745 A0 0380000>mov dword ptr ss:[ebp-60],8003
004035C9 . FF15 44104000 call dword ptr ds:[<&MSVBVM60.__vbaVarTstLe>] ; MSVBVM60.__vbaVarTstLe
004035CF . 66:85C0 test ax,ax
004035D2 . 0F84 AA010000 je 献给所有.00403782 ; 循环是否结束
004035D8 . 8B96 80000000 mov edx,dword ptr ds:[esi+80]
004035DE . 8D4D C0 lea ecx,dword ptr ss:[ebp-40]
004035E1 . 51 push ecx
004035E2 . 8D46 6C lea eax,dword ptr ds:[esi+6C]
004035E5 . 8945 A8 mov dword ptr ss:[ebp-58],eax
004035E8 . 52 push edx
004035E9 . 8D45 A0 lea eax,dword ptr ss:[ebp-60]
004035EC . 50 push eax
004035ED . 8D4D B0 lea ecx,dword ptr ss:[ebp-50]
004035F0 . 51 push ecx
004035F1 . C745 C8 0100000>mov dword ptr ss:[ebp-38],1
004035F8 . C745 C0 0200000>mov dword ptr ss:[ebp-40],2
004035FF . C745 A0 0840000>mov dword ptr ss:[ebp-60],4008
00403606 . FF15 5C104000 call dword ptr ds:[<&MSVBVM60.#632>] ; MSVBVM60.rtcMidCharVar
0040360C . 8BBE 80000000 mov edi,dword ptr ds:[esi+80]
00403612 . 81FF 00010000 cmp edi,100
00403618 . 72 06 jb short 献给所有.00403620
0040361A . FF15 68104000 call dword ptr ds:[<&MSVBVM60.__vbaGenerateBou>; MSVBVM60.__vbaGenerateBoundsError
00403620 > 8B46 60 mov eax,dword ptr ds:[esi+60]
00403623 . 8BCF mov ecx,edi
00403625 . C1E1 04 shl ecx,4
00403628 . 8D55 B0 lea edx,dword ptr ss:[ebp-50]
0040362B . 03C8 add ecx,eax
0040362D . FF15 0C104000 call dword ptr ds:[<&MSVBVM60.__vbaVarMove>] ; MSVBVM60.__vbaVarMove
00403633 . 8D55 B0 lea edx,dword ptr ss:[ebp-50]
00403636 . 52 push edx
00403637 . 8D45 C0 lea eax,dword ptr ss:[ebp-40]
0040363A . 50 push eax
0040363B . 6A 02 push 2
0040363D . FF15 20104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeVarList>; MSVBVM60.__vbaFreeVarList
00403643 . 8BBE 80000000 mov edi,dword ptr ds:[esi+80]
00403649 . 83C4 0C add esp,0C
0040364C . 81FF 00010000 cmp edi,100
00403652 . 72 06 jb short 献给所有.0040365A
00403654 . FF15 68104000 call dword ptr ds:[<&MSVBVM60.__vbaGenerateBou>; MSVBVM60.__vbaGenerateBoundsError
0040365A > 8B9E 80000000 mov ebx,dword ptr ds:[esi+80]
00403660 . 81FB 00010000 cmp ebx,100
00403666 . 72 06 jb short 献给所有.0040366E
00403668 . FF15 68104000 call dword ptr ds:[<&MSVBVM60.__vbaGenerateBou>; MSVBVM60.__vbaGenerateBoundsError
0040366E > 8B4E 60 mov ecx,dword ptr ds:[esi+60]
00403671 . C1E7 04 shl edi,4
00403674 . 03F9 add edi,ecx
00403676 . 57 push edi
00403677 . 8D4D D8 lea ecx,dword ptr ss:[ebp-28]
0040367A . 51 push ecx
0040367B . FF15 94104000 call dword ptr ds:[<&MSVBVM60.__vbaStrVarVal>] ; MSVBVM60.__vbaStrVarVal
00403681 . 50 push eax
00403682 . FF15 30104000 call dword ptr ds:[<&MSVBVM60.#516>] ; MSVBVM60.rtcAnsiValueBstr
00403688 . 0FBFD0 movsx edx,ax ; 获得ascii
0040368B . 8B86 80000000 mov eax,dword ptr ds:[esi+80] ; 位数
00403691 . 6BC0 08 imul eax,eax,8 ; eax＝eax*8
00403694 . 0F80 68010000 jo 献给所有.00403802
0040369A . 33D0 xor edx,eax ; ASCII xor 位数*8
0040369C . 52 push edx ; /Arg1
0040369D . FF15 10104000 call dword ptr ds:[<&MSVBVM60.__vbaStrI4>] ; \__vbaStrI4
004036A3 . 8BD0 mov edx,eax
004036A5 . 8D4D D4 lea ecx,dword ptr ss:[ebp-2C]
004036A8 . FF15 CC104000 call dword ptr ds:[<&MSVBVM60.__vbaStrMove>] ; MSVBVM60.__vbaStrMove
004036AE . 8B4E 44 mov ecx,dword ptr ds:[esi+44]
004036B1 . 8BD0 mov edx,eax
004036B3 . 8D0C99 lea ecx,dword ptr ds:[ecx+ebx*4]
004036B6 . FF15 A8104000 call dword ptr ds:[<&MSVBVM60.__vbaStrCopy>] ; MSVBVM60.__vbaStrCopy
004036BC . 8D55 D4 lea edx,dword ptr ss:[ebp-2C]
004036BF . 52 push edx
004036C0 . 8D45 D8 lea eax,dword ptr ss:[ebp-28]
004036C3 . 50 push eax
004036C4 . 6A 02 push 2
004036C6 . FF15 B0104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeStrList>; MSVBVM60.__vbaFreeStrList
004036CC . 8BBE 80000000 mov edi,dword ptr ds:[esi+80]
004036D2 . 83C4 0C add esp,0C
004036D5 . 81FF 00010000 cmp edi,100
004036DB . 72 06 jb short 献给所有.004036E3
004036DD . FF15 68104000 call dword ptr ds:[<&MSVBVM60.__vbaGenerateBou>; MSVBVM60.__vbaGenerateBoundsError
004036E3 > 8B4E 44 mov ecx,dword ptr ds:[esi+44]
004036E6 . 8B14B9 mov edx,dword ptr ds:[ecx+edi*4]
004036E9 . 52 push edx ; /Arg1
004036EA . FF15 AC104000 call dword ptr ds:[<&MSVBVM60.__vbaI4Str>] ; \__vbaI4Str
004036F0 . 50 push eax ; 转成16进制
004036F1 . 8D45 C0 lea eax,dword ptr ss:[ebp-40]
004036F4 . 50 push eax
004036F5 . FF15 8C104000 call dword ptr ds:[<&MSVBVM60.#608>] ; MSVBVM60.rtcVarBstrFromAnsi
004036FB . 8DBE 84000000 lea edi,dword ptr ds:[esi+84]
00403701 . 8D55 C0 lea edx,dword ptr ss:[ebp-40]
00403704 . 8BCF mov ecx,edi
00403706 . FF15 0C104000 call dword ptr ds:[<&MSVBVM60.__vbaVarMove>] ; MSVBVM60.__vbaVarMove
0040370C . 8D4D C0 lea ecx,dword ptr ss:[ebp-40]
0040370F . FF15 14104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeVar>] ; MSVBVM60.__vbaFreeVar
00403715 . 8B8E 94000000 mov ecx,dword ptr ds:[esi+94]
0040371B . 57 push edi
0040371C . 8D55 A0 lea edx,dword ptr ss:[ebp-60]
0040371F . 8D9E 94000000 lea ebx,dword ptr ds:[esi+94]
00403725 . 52 push edx
00403726 . 8D45 C0 lea eax,dword ptr ss:[ebp-40]
00403729 . 50 push eax
0040372A . 894D A8 mov dword ptr ss:[ebp-58],ecx
0040372D . C745 A0 0800000>mov dword ptr ss:[ebp-60],8
00403734 . FF15 C0104000 call dword ptr ds:[<&MSVBVM60.__vbaVarAdd>] ; MSVBVM60.__vbaVarAdd
0040373A . 50 push eax
0040373B . FF15 1C104000 call dword ptr ds:[<&MSVBVM60.__vbaStrVarMove>>; MSVBVM60.__vbaStrVarMove
00403741 . 8BD0 mov edx,eax ; 得到字符chr()
00403743 . 8D4D D8 lea ecx,dword ptr ss:[ebp-28]
00403746 . FF15 CC104000 call dword ptr ds:[<&MSVBVM60.__vbaStrMove>] ; MSVBVM60.__vbaStrMove
0040374C . 8BD0 mov edx,eax
0040374E . 8BCB mov ecx,ebx
00403750 . FF15 A8104000 call dword ptr ds:[<&MSVBVM60.__vbaStrCopy>] ; MSVBVM60.__vbaStrCopy
00403756 . 8D4D D8 lea ecx,dword ptr ss:[ebp-28]
00403759 . FF15 DC104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeStr>] ; MSVBVM60.__vbaFreeStr
0040375F . 8D4D C0 lea ecx,dword ptr ss:[ebp-40]
00403762 . FF15 14104000 call dword ptr ds:[<&MSVBVM60.__vbaFreeVar>] ; MSVBVM60.__vbaFreeVar
00403768 . 8B8E 80000000 mov ecx,dword ptr ds:[esi+80]
0040376E . 83C1 01 add ecx,1
00403771 . 0F80 8B000000 jo 献给所有.00403802
00403777 . 898E 80000000 mov dword ptr ds:[esi+80],ecx
0040377D .^ E9 2FFEFFFF jmp 献给所有.004035B1 ; 继续循环
00403782 > 68 C9374000 push 献给所有.004037C9
很简单，取ascii，xor位数*8，然后转换为16进制，逆序既可以得到注册码：
for i=1 to len(name)
sn=chr(cint("&H" & hex(asc(mid(name,i,1)) xor i*8 ))) & sn
next
没有浮点，适合vb入手。
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