标 题: 【原创】Syser Debugger v1.96破解过程
作 者: vessial
时 间: 2008-04-19,14:52
链 接: http://bbs.pediy.com/showthread.php?t=48741
欢迎交流讨论:)
http://hi.baidu.com/vessial
本破解过程针对Syser Debugger 1.96.1900.0957
准备工作参照我前边对v1.92的分析文章，注册过程是在syser.sys这个驱动里面做的，
这个驱动比较大，根本以往的经验，它有对时间的判断，所以我们在KeQuerySystemTime函数
下断点，分析过程如下.
.text:F4C4E0F9 mov ecx, P
.text:F4C4E0FF push ebx ; KeyHandle
.text:F4C4E100 lea eax, [ebp+var_288]
.text:F4C4E106 push eax ; int
.text:F4C4E107 lea eax, [ebp+SourceString]
.text:F4C4E10D push eax ; SourceString
.text:F4C4E10E mov word ptr [ebp+var_288], bx
.text:F4C4E115 call sub_F4C66E4A
.text:F4C4E11A lea eax, [ebp+var_288] ; //eax store the Serial Number UNICODE
.text:F4C4E120 push eax
.text:F4C4E121 lea eax, [ebp+var_188]
.text:F4C4E127 push eax
.text:F4C4E128 call sub_F4C4517E
.text:F4C4E12D lea eax, [ebp+var_188] ; //eax store the Serial Number ASCII
.text:F4C4E133 lea ecx, [esi+0C20h]
.text:F4C4E139 push eax
.text:F4C4E13A call sub_F4C48704
.text:F4C4E13F push offset aMjdobnf ;// "MjdObnf" minus one= "LicName"
.text:F4C4E144 lea eax, [ebp+SourceString]
.text:F4C4E14A push eax //Read LicName from Registry
.text:F4C4E14B call sub_F4C4520E
.text:F4C4E150 cmp [ebp+SourceString], bx
.text:F4C4E157 jz short loc_F4C4E171
.text:F4C4E159 lea eax, [ebp+SourceString]
.text:F4C4E15F lea ecx, [ebp+SourceString]
.text:F4C4E171 mov ecx, P
.text:F4C4E177 push ebx ; KeyHandle
.text:F4C4E178 lea eax, [ebp+var_288]
.text:F4C4E17E push eax ; int
.text:F4C4E17F lea eax, [ebp+SourceString]
.text:F4C4E185 push eax ; SourceString
.text:F4C4E186 mov word ptr [ebp+var_288], bx
.text:F4C4E18D call sub_F4C66E4A
.text:F4C4E192 lea eax, [ebp+var_288]
.text:F4C4E198 push eax
.text:F4C4E199 lea eax, [ebp+var_188]
.text:F4C4E19F push eax
.text:F4C4E1A0 call sub_F4C4517E
.text:F4C4E1A5 lea eax, [ebp+var_188] ; Read Registry LicName
.text:F4C4E1AB lea ecx, [esi+0C30h]
.text:F4C4E1B1 push eax
.text:F4C4E1B2 call sub_F4C48704 ; Read Registry SN
.text:F4C4E1B7 push offset aJotuujnf ; "JotuUjnf" minus one= "InstTime"
.text:F4C4E1BC lea eax, [ebp+SourceString]//Read InstTime from Registry
.text:F4C4E1C2 push eax
.text:F4C4E1C3 call sub_F4C4520E
.text:F4C4E1E9 push edi
.text:F4C4E1EA lea eax, [esi+0C00h]
.text:F4C4E1F0 push ebx ; KeyHandle
.text:F4C4E1F1 mov [eax], ebx
.text:F4C4E1F3 mov [eax+4], ebx
.text:F4C4E1F6 push eax ; int
.text:F4C4E1F7 lea edi, [esi+0BF8h]
.text:F4C4E1FD lea eax, [ebp+SourceString]
.text:F4C4E203 mov [edi], ebx
.text:F4C4E205 mov [edi+4], ebx
.text:F4C4E208 mov ecx, P
.text:F4C4E20E push eax ; SourceString
.text:F4C4E20F call sub_F4C669A8
.text:F4C4E214 push edi ; CurrentTime
.text:F4C4E215 call ds:KeQuerySystemTime //得到当前的时间
.text:F4C4E21B mov ecx, esi
.text:F4C4E21D call Process_SN //这里是关键的利用LicName生成和比较注册码的函数
.text:F4C4E222 cmp al, bl
.text:F4C4E224 mov [esi+0C08h], al
.text:F4C4E22A jnz loc_F4C4E30D
.text:F4C4E230 mov eax, dword_F4D60B3C
.text:F4C4E235 mov edi, [eax]
.text:F4C4E237 lea eax, [ebp+var_8]
.text:F4C4E23A push eax
.text:F4C4E23B lea ecx, [esi+0C30h]
.text:F4C4E241 call sub_F4C4516A
.text:F4C4E246 push eax
.text:F4C4E247 lea ecx, [esi+0C20h]
.text:F4C4E24D call sub_F4C4516A
.text:F4C4E252 mov ecx, dword_F4D60B3C
.text:F4C4E258 push eax
.text:F4C4E259 call dword ptr [edi+0C8h]
.text:F4C4DD54 Process_SN proc near ; CODE XREF: sub_F4C4E0B8+165p
.text:F4C4DD54
.text:F4C4DD54 var_300 = byte ptr -300h
.text:F4C4DD54 var_200 = word ptr -200h
.text:F4C4DD54
.text:F4C4DD54 push ebp
.text:F4C4DD55 mov ebp, esp
.text:F4C4DD57 sub esp, 300h
.text:F4C4DD5D push ebx
.text:F4C4DD5E push esi
.text:F4C4DD5F mov esi, ecx
.text:F4C4DD61 push edi
.text:F4C4DD62 lea ecx, [esi+0C20h]
.text:F4C4DD68 lea edi, [esi+0C30h]
.text:F4C4DD6E call sub_F4C4516A
.text:F4C4DD73 push eax
.text:F4C4DD74 mov ecx, edi
.text:F4C4DD76 call sub_F4C4516A
.text:F4C4DD7B push eax
.text:F4C4DD7C call sub_F4CD40FA ; process LicName and SN //Get in ---->
.text:F4C4DD81 xor ebx, ebx |
.text:F4C4DD83 cmp eax, ebx |
.text:F4C4DD85 mov [esi+0C0Ch], eax |
.text:F4C4DD8B jz loc_F4C4DE30 |
|
.text:F4CD40FA push ebp <-----------------------------------------
.text:F4CD40FB mov ebp, esp
.text:F4CD40FD sub esp, 110h
.text:F4CD4103 push esi
.text:F4CD4104 push edi
.text:F4CD4105 mov edi, [ebp+arg_4]
.text:F4CD4108 push edi
.text:F4CD4109 lea ecx, [ebp+var_10]
.text:F4CD410C call sub_F4C45E32
.text:F4CD4111 mov esi, [ebp+var_C]
.text:F4CD4114 test esi, esi
.text:F4CD4116 jz short loc_F4CD411E
.text:F4CD4118 push esi
.text:F4CD4119 call sub_F4C4A6CC
.text:F4CD411E
.text:F4CD411E loc_F4CD411E: ; CODE XREF: sub_F4CD40FA+1Cj
.text:F4CD411E and byte_F4D60B50, 0
.text:F4CD4125 test esi, esi
.text:F4CD4127 jnz short loc_F4CD412E
.text:F4CD4129 mov esi, offset byte_F4D60B50
.text:F4CD412E
.text:F4CD412E loc_F4CD412E: ; CODE XREF: sub_F4CD40FA+2Dj
.text:F4CD412E push esi
.text:F4CD412F call sub_F4CD3DB8
.text:F4CD4134 test al, al
.text:F4CD4136 jnz short loc_F4CD4152
.text:F4CD4138 lea ecx, [ebp+var_10]
.text:F4CD413B call sub_F4C44C8C
.text:F4CD4140
.text:F4CD4140 loc_F4CD4140: ; CODE XREF: sub_F4CD40FA+93j
.text:F4CD4140 ; sub_F4CD40FA+BAj ...
.text:F4CD4140 xor esi, esi
.text:F4CD4142
.text:F4CD4142 loc_F4CD4142: ; CODE XREF: sub_F4CD40FA+A9j
.text:F4CD4142 ; sub_F4CD40FA+D0j
.text:F4CD4142 lea ecx, [ebp+var_10]
.text:F4CD4145 call sub_F4C44C60
.text:F4CD414A pop edi
.text:F4CD414B mov eax, esi
.text:F4CD414D pop esi
.text:F4CD414E leave
.text:F4CD414F retn 8
.text:F4CD4152 ; ---------------------------------------------------------------------------
.text:F4CD4152
.text:F4CD4152 loc_F4CD4152: ; CODE XREF: sub_F4CD40FA+3Cj
.text:F4CD4152 mov esi, [ebp+arg_0]
.text:F4CD4155 push 100h
.text:F4CD415A push esi ; SN
.text:F4CD415B lea eax, [ebp+var_110]
.text:F4CD4161 push eax
.text:F4CD4162 call sub_F4C42F18
.text:F4CD4167 cmp [ebp+var_110], 0
.text:F4CD416E jz short loc_F4CD417E
.text:F4CD4170 lea eax, [ebp+var_110]
.text:F4CD4176
.text:F4CD4176 loc_F4CD4176: ; CODE XREF: sub_F4CD40FA+82j
.text:F4CD4176 inc byte ptr [eax] ; LicName every byte plus one //LicName每个字符加1
.text:F4CD4178 inc eax
.text:F4CD4179 cmp byte ptr [eax], 0
.text:F4CD417C jnz short loc_F4CD4176
.text:F4CD417E
.text:F4CD417E loc_F4CD417E: ; CODE XREF: sub_F4CD40FA+74j
.text:F4CD417E lea eax, [ebp+var_90]
.text:F4CD4184 push eax
.text:F4CD4185 push esi ; LicName
.text:F4CD4186 call Gen_regcode //产生注册码的地方
.text:F4CD418B test al, al
.text:F4CD418D jz short loc_F4CD4140
.text:F4CD418F push edi
.text:F4CD4190 lea eax, [ebp+var_90]
.text:F4CD4196 push eax //存入的注册码，和你输入的注册码，在这儿下断点就可以得真正的注册码了.
.text:F4CD4197 call Compare_reg ; Compare SN //比较注册码
.text:F4CD419C test eax, eax
.text:F4CD419E jnz short loc_F4CD41A5
.text:F4CD41A0 push 3
.text:F4CD41A2
.text:F4CD41A2 loc_F4CD41A2: ; CODE XREF: sub_F4CD40FA+101j
.text:F4CD41A2 pop esi
.text:F4CD41A3 jmp short loc_F4CD4142
.text:F4CD41A5 ; ---------------------------------------------------------------------------
.text:F4CD41A5
.text:F4CD41A5 loc_F4CD41A5: ; CODE XREF: sub_F4CD40FA+A4j
.text:F4CD41A5 lea eax, [ebp+var_90]
.text:F4CD41AB push eax
.text:F4CD41AC push esi
.text:F4CD41AD call sub_F4CD3F3E
.text:F4CD41B2 test al, al
.text:F4CD41B4 jz short loc_F4CD4140
.text:F4CD41B6 push edi
.text:F4CD41B7 lea eax, [ebp+var_90]
.text:F4CD41BD push eax
.text:F4CD41BE call Compare_reg
.text:F4CD41C3 test eax, eax
.text:F4CD41C5 jnz short loc_F4CD41CF
.text:F4CD41C7 xor esi, esi
.text:F4CD41C9 inc esi
.text:F4CD41CA jmp loc_F4CD4142
.text:F4CD41CF ; ---------------------------------------------------------------------------
.text:F4CD41CF
.text:F4CD41CF loc_F4CD41CF: ; CODE XREF: sub_F4CD40FA+CBj
.text:F4CD41CF lea eax, [ebp+var_90]
.text:F4CD41D5 push eax
.text:F4CD41D6 push esi
.text:F4CD41D7 call sub_F4CD4066
.text:F4CD41DC test al, al
.text:F4CD41DE jz loc_F4CD4140
.text:F4CD41E4 push edi
.text:F4CD41E5 lea eax, [ebp+var_90]
.text:F4CD41EB push eax
.text:F4CD41EC call Compare_reg
.text:F4CD41F1 test eax, eax
.text:F4CD41F3 jnz loc_F4CD4140
.text:F4CD41F9 push 2
.text:F4CD41FB jmp short loc_F4CD41A2
.text:F4CD41FB sub_F4CD40FA endp
.text:F4CD3FD2 Gen_regcode proc near ; CODE XREF: sub_F4CD40FA+8Cp
.text:F4CD3FD2
.text:F4CD3FD2 var_18 = dword ptr -18h
.text:F4CD3FD2 var_14 = dword ptr -14h
.text:F4CD3FD2 var_10 = dword ptr -10h
.text:F4CD3FD2 var_C = dword ptr -0Ch
.text:F4CD3FD2 var_8 = dword ptr -8
.text:F4CD3FD2 var_4 = dword ptr -4
.text:F4CD3FD2 arg_0 = dword ptr 8
.text:F4CD3FD2 arg_4 = dword ptr 0Ch
.text:F4CD3FD2
.text:F4CD3FD2 push ebp
.text:F4CD3FD3 mov ebp, esp
.text:F4CD3FD5 sub esp, 18h
.text:F4CD3FD8 mov eax, [ebp+arg_0]
.text:F4CD3FDB push ebx
.text:F4CD3FDC xor ebx, ebx
.text:F4CD3FDE cmp eax, ebx
.text:F4CD3FE0 jz short loc_F4CD405E
.text:F4CD3FE2 cmp [eax], bl
.text:F4CD3FE4 jz short loc_F4CD405E
.text:F4CD3FE6 push eax
.text:F4CD3FE7 lea ecx, [ebp+var_18]
.text:F4CD3FEA mov [ebp+var_18], offset off_F4CD8408
.text:F4CD3FF1 mov [ebp+var_14], ebx
.text:F4CD3FF4 mov [ebp+var_10], ebx
.text:F4CD3FF7 mov [ebp+var_C], ebx
.text:F4CD3FFA call sub_F4C48704
.text:F4CD3FFF cmp [ebp+var_14], ebx
.text:F4CD4002 jz short loc_F4CD400C
.text:F4CD4004 push [ebp+var_14]
.text:F4CD4007 call sub_F4C4A6A6
.text:F4CD400C
.text:F4CD400C loc_F4CD400C: ; CODE XREF: sub_F4CD3FD2+30j
.text:F4CD400C push esi
.text:F4CD400D xor esi, esi
.text:F4CD400F cmp [ebp+var_10], ebx
.text:F4CD4012 mov [ebp+var_8], 0D6C2CBC0h
.text:F4CD4019 mov [ebp+var_4], 0D7C0D6DCh
.text:F4CD4020 jle short loc_F4CD4040
.text:F4CD4022
.text:F4CD4022 loc_F4CD4022: ; CODE XREF: sub_F4CD3FD2+6Cj
.text:F4CD4022 mov eax, [ebp+var_14]
.text:F4CD4025 mov cl, [eax+esi]
.text:F4CD4028 xor edx, edx
.text:F4CD402A lea eax, [ebp+var_4+3]
.text:F4CD402D
.text:F4CD402D loc_F4CD402D: ; CODE XREF: sub_F4CD3FD2+66j
.text:F4CD402D xor byte ptr [ebp+edx+var_8], cl ; LicName XOR with 0xD6C2BC0h ,0x0D7C0D6DCh
.text:F4CD4031 add [eax], cl
.text:F4CD4033 inc edx
.text:F4CD4034 dec eax
.text:F4CD4035 cmp edx, 8
.text:F4CD4038 jl short loc_F4CD402D
.text:F4CD403A inc esi
.text:F4CD403B cmp esi, [ebp+var_10]
.text:F4CD403E jl short loc_F4CD4022
.text:F4CD4040
.text:F4CD4040 loc_F4CD4040: ; CODE XREF: sub_F4CD3FD2+4Ej
.text:F4CD4040 push ebx
.text:F4CD4041 push 1
.text:F4CD4043 push 8
.text:F4CD4045 push [ebp+arg_4]
.text:F4CD4048 lea eax, [ebp+var_8]
.text:F4CD404B push eax
.text:F4CD404C call sub_F4CD3DEE ; Process LicName //最终将在这儿产生注册码:) -----------------
.text:F4CD4051 lea ecx, [ebp+var_18] |
.text:F4CD4054 call sub_F4C44C60 |
.text:F4CD4059 mov al, 1 |
.text:F4CD405B pop esi |
.text:F4CD405C jmp short loc_F4CD4060 |
.text:F4CD405E ; --------------------------------------------------------------------------- |
.text:F4CD405E |
.text:F4CD405E loc_F4CD405E: ; CODE XREF: sub_F4CD3FD2+Ej |
.text:F4CD405E ; sub_F4CD3FD2+12j |
.text:F4CD405E xor al, al |
.text:F4CD4060 |
.text:F4CD4060 loc_F4CD4060: ; CODE XREF: sub_F4CD3FD2+8Aj |
.text:F4CD4060 pop ebx |
.text:F4CD4061 leave |
.text:F4CD4062 retn 8 |
.text:F4CD4062 sub_F4CD3FD2 endp |
|
|
text:F4283DEE |
.text:F4283DEE push ebp <------------------------------------------------------
.text:F4283DEF mov ebp, esp
.text:F4283DF1 sub esp, 18h
.text:F4283DF4 push ebx
.text:F4283DF5 mov ebx, [ebp+arg_C]
.text:F4283DF8 push esi
.text:F4283DF9 push edi
.text:F4283DFA xor edi, edi
.text:F4283DFC cmp [ebp+arg_10], edi
.text:F4283DFF lea esi, [ebx+ebx]
.text:F4283E02 mov [ebp+var_4], esi
.text:F4283E05 mov [ebp+var_C], edi
.text:F4283E08 jz short loc_F4283E18
.text:F4283E0A push [ebp+arg_10]
.text:F4283E0D call sub_F41F2F04
.text:F4283E12 add [ebp+var_4], eax
.text:F4283E15 mov [ebp+var_C], eax
.text:F4283E18
.text:F4283E18 loc_F4283E18: ; CODE XREF: sub_F4283DEE+1Aj
.text:F4283E18 mov eax, [ebp+arg_8]
.text:F4283E1B cdq
.text:F4283E1C idiv ebx
.text:F4283E1E test eax, eax
.text:F4283E20 mov ebx, edx
.text:F4283E22 mov [ebp+var_18], ebx
.text:F4283E25 jle loc_F4283EB4
.text:F4283E2B mov ecx, [ebp+arg_0]
.text:F4283E2E mov [ebp+var_8], ecx
.text:F4283E31 mov ecx, [ebp+arg_4]
.text:F4283E34 add esi, ecx
.text:F4283E36 mov edi, eax
.text:F4283E38 mov [ebp+var_10], esi
.text:F4283E3B mov [ebp+var_14], edi
.text:F4283E3E
.text:F4283E3E loc_F4283E3E: ; CODE XREF: sub_F4283DEE+C4j
.text:F4283E3E cmp [ebp+arg_10], 0
.text:F4283E42 jz short loc_F4283E4D
.text:F4283E44 push [ebp+arg_10]
.text:F4283E47 push esi
.text:F4283E48 call sub_F41F2EE8
.text:F4283E4D
.text:F4283E4D loc_F4283E4D: ; CODE XREF: sub_F4283DEE+54j
.text:F4283E4D and [ebp+arg_8], 0
.text:F4283E51 cmp [ebp+arg_C], 0
.text:F4283E55 jle short loc_F4283EA0
.text:F4283E57
.text:F4283E57 loc_F4283E57: ; CODE XREF: sub_F4283DEE+ADj
.text:F4283E57 mov eax, [ebp+var_8]
.text:F4283E5A mov ecx, [ebp+arg_8]
.text:F4283E5D mov cl, [eax+ecx]
.text:F4283E60 movzx eax, cl
.text:F4283E63 cdq
.text:F4283E64 push 10h
.text:F4283E66 pop ebx
.text:F4283E67 idiv ebx
.text:F4283E69 dec esi
.text:F4283E6A cmp dl, 9
.text:F4283E6D movzx eax, dl
.text:F4283E70 ja short loc_F4283E77
.text:F4283E72 add eax, 30h
.text:F4283E75 jmp short loc_F4283E7A
.text:F4283E77 ; ---------------------------------------------------------------------------
.text:F4283E77
.text:F4283E77 loc_F4283E77: ; CODE XREF: sub_F4283DEE+82j
.text:F4283E77 add eax, 37h
.text:F4283E7A
.text:F4283E7A loc_F4283E7A: ; CODE XREF: sub_F4283DEE+87j
.text:F4283E7A shr cl, 4
.text:F4283E7D mov [esi], al
.text:F4283E7F dec esi
.text:F4283E80 cmp cl, 9
.text:F4283E83 movzx eax, cl
.text:F4283E86 ja short loc_F4283E8D
.text:F4283E88 add eax, 30h
.text:F4283E8B jmp short loc_F4283E90
.text:F4283E8D ; ---------------------------------------------------------------------------
.text:F4283E8D
.text:F4283E8D loc_F4283E8D: ; CODE XREF: sub_F4283DEE+98j
.text:F4283E8D add eax, 37h
.text:F4283E90
.text:F4283E90 loc_F4283E90: ; CODE XREF: sub_F4283DEE+9Dj
.text:F4283E90 inc [ebp+arg_8]
.text:F4283E93 mov [esi], al
.text:F4283E95 mov eax, [ebp+arg_8]
.text:F4283E98 cmp eax, [ebp+arg_C]
.text:F4283E9B jl short loc_F4283E57
.text:F4283E9D mov ebx, [ebp+var_18]
.text:F4283EA0
.text:F4283EA0 loc_F4283EA0: ; CODE XREF: sub_F4283DEE+67j
.text:F4283EA0 mov esi, [ebp+var_10]
.text:F4283EA3 add esi, [ebp+var_4]
.text:F4283EA6 mov eax, [ebp+arg_C]
.text:F4283EA9 add [ebp+var_8], eax
.text:F4283EAC dec [ebp+var_14]
.text:F4283EAF mov [ebp+var_10], esi
.text:F4283EB2 jnz short loc_F4283E3E
.text:F4283EB4
.text:F4283EB4 loc_F4283EB4: ; CODE XREF: sub_F4283DEE+37j
.text:F4283EB4 test ebx, ebx
.text:F4283EB6 jz short loc_F4283F26
.text:F4283EB8 mov ecx, [ebp+arg_4]
.text:F4283EBB and [ebp+arg_10], 0
.text:F4283EBF mov eax, edi
.text:F4283EC1 imul eax, [ebp+var_4]
.text:F4283EC5 add ecx, eax
.text:F4283EC7 test ebx, ebx
.text:F4283EC9 lea esi, [ecx+ebx*2]
.text:F4283ECC jle short loc_F4283F22
.text:F4283ECE mov ecx, [ebp+arg_0]
.text:F4283ED1 mov eax, edi
.text:F4283ED3 imul eax, [ebp+arg_C]
.text:F4283ED7 add eax, ecx
.text:F4283ED9 mov [ebp+arg_C], eax
.text:F4283EDC
.text:F4283EDC loc_F4283EDC: ; CODE XREF: sub_F4283DEE+132j
.text:F4283EDC mov eax, [ebp+arg_C]
.text:F4283EDF mov ecx, [ebp+arg_10]
.text:F4283EE2 mov cl, [eax+ecx]
.text:F4283EE5 movzx eax, cl
.text:F4283EE8 cdq
.text:F4283EE9 push 10h
.text:F4283EEB pop ebx
.text:F4283EEC idiv ebx
.text:F4283EEE dec esi
.text:F4283EEF cmp dl, 9
.text:F4283EF2 movzx eax, dl
.text:F4283EF5 ja short loc_F4283EFC
.text:F4283EF7 add eax, 30h
.text:F4283EFA jmp short loc_F4283EFF
.text:F4283EFC ; ---------------------------------------------------------------------------
.text:F4283EFC
.text:F4283EFC loc_F4283EFC: ; CODE XREF: sub_F4283DEE+107j
.text:F4283EFC add eax, 37h
.text:F4283EFF
.text:F4283EFF loc_F4283EFF: ; CODE XREF: sub_F4283DEE+10Cj
.text:F4283EFF shr cl, 4
.text:F4283F02 mov [esi], al
.text:F4283F04 dec esi
.text:F4283F05 cmp cl, 9
.text:F4283F08 movzx eax, cl
.text:F4283F0B ja short loc_F4283F12
.text:F4283F0D add eax, 30h
.text:F4283F10 jmp short loc_F4283F15
.text:F4283F12 ; ---------------------------------------------------------------------------
.text:F4283F12
.text:F4283F12 loc_F4283F12: ; CODE XREF: sub_F4283DEE+11Dj
.text:F4283F12 add eax, 37h
.text:F4283F15
.text:F4283F15 loc_F4283F15: ; CODE XREF: sub_F4283DEE+122j
.text:F4283F15 inc [ebp+arg_10]
.text:F4283F18 mov ebx, [ebp+var_18]
.text:F4283F1B cmp [ebp+arg_10], ebx
.text:F4283F1E mov [esi], al
.text:F4283F20 jl short loc_F4283EDC
.text:F4283F22
.text:F4283F22 loc_F4283F22: ; CODE XREF: sub_F4283DEE+DEj
.text:F4283F22 and [ebp+var_C], 0
.text:F4283F26
.text:F4283F26 loc_F4283F26: ; CODE XREF: sub_F4283DEE+C8j
.text:F4283F26 imul edi, [ebp+var_4]
.text:F4283F2A lea eax, [edi+ebx*2]
.text:F4283F2D sub eax, [ebp+var_C]
.text:F4283F30 pop edi
.text:F4283F31 add eax, [ebp+arg_4]
.text:F4283F34 pop esi
.text:F4283F35 and byte ptr [eax], 0
.text:F4283F38 pop ebx
.text:F4283F39 leave
.text:F4283F3A retn 14h
.text:F4283F3A sub_F4283DEE endp
.text:F4283F3A
注册算法后续补上:)
- 标 题：Syser Debugger v1.96破解过程
- 作 者：xee
- 时 间：2008-04-19 18:08:37
- 链 接：http://bbs.pediy.com/showthread.php?t=63397