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您的位置:首页精文荟萃破解文章 → VB Pcode破解方法及实例

VB Pcode破解方法及实例

时间:2004/10/15 0:57:00来源:本站整理作者:蓝点我要评论(0)

 

破解工具:exdec.exe(vb pcode反编译工具) http://guodong.home.sohu.com/exdec.zip


破解对象:风飘雪crackme001 (下载http://duba.126.com)


exdec反编译


Email josephco_@hotmail.com with any errors or problems


This program doesn't have executable code right after it loads


 


Proc: 402870


40276C: f5 LitI4: 0x0 0 (....)


402771: 71 FStR4 local_0098


402774: f5 LitI4: 0x0 0 (....)


402779: 71 FStR4 local_009C


40277C: 04 FLdRfVar local_00A4


40277F: 21 FLdPrThis


402780: 0f VCallAd 7b3fc360


402783: 19 FStAdFunc local_00A0


402786: 08 FLdPr local_00A0


402789: 0d VCallHresult 7b3fbe88


40278E: 3e FLdZeroAd local_00A4


402791: 31 FStStr local_0090


402794: 1a FFree1Ad local_00A0


402797: 04 FLdRfVar local_00A4


40279A: 21 FLdPrThis


40279B: 0f VCallAd 7b3fc358


40279E: 19 FStAdFunc local_00A0


4027A1: 08 FLdPr local_00A0


4027A4: 0d VCallHresult 7b3fbe88


4027A9: 3e FLdZeroAd local_00A4


4027AC: 31 FStStr local_0094


4027AF: 1a FFree1Ad local_00A0


4027B2: 6c ILdRf local_0090


4027B5: 4a FnLenStr ====取输入姓名长度(0090)


4027B6: f5 LitI4: 0x9 9 (....)


4027BB: d1 LtI4


4027BC: 6c ILdRf local_0090


4027BF: 4a FnLenStr


4027C0: f5 LitI4: 0xb 11 (....)


4027C5: db GtI4


4027C6: c4 AndI4 =====姓名长度要求9-11


4027C7: 6c ILdRf local_0094


4027CA: 4a FnLenStr ====取输入注册码长度(0094)


4027CB: f5 LitI4: 0x9 9 (....)


4027D0: d1 LtI4


4027D1: c5 OrI4 =====注册码长度要求大于等于9


4027D2: 1c BranchF: 4027DA


4027D5: 10 ThisVCallHresult 0


4027DA: f4 LitI2_Byte: 0x1 1 (.) ===步长1(I2)


4027DC: 04 FLdRfVar local_008A


4027DF: 6c ILdRf local_0090 ====读入姓名(0090)


4027E2: 4a FnLenStr


4027E3: e4 CI2I4


4027E4: Lead3/63 ForI2: (when done) 402829


4027EA: 27 LitVar_Missing ==============循环


4027ED: 6b FLdI2 local_008A


4027F0: e7 CI4UI1


4027F1: 6c ILdRf local_0090


4027F4: 0b ImpAdCallI2 


4027F9: 23 FStStrNoPop local_00A4


4027FC: 0b ImpAdCallI2 


402801: e7 CI4UI1


402802: 71 FStR4 local_0088


402805: 2f FFree1Str local_00A4


402808: 35 FFree1Var local_00C8


40280B: 6c ILdRf local_0098


40280E: 6c ILdRf local_0088


402811: f5 LitI4: 0x4 4 (....)


402816: b2 MulI4 =====ascii码值乘4


402817: aa AddI4


402818: f5 LitI4: 0x12 18 (....)


40281D: aa AddI4 ======加18


40281E: 71 FStR4 local_0098


402821: 04 FLdRfVar local_008A


402824: 64 NextI2: (continue) 4027EA==========循环(I2)


402829: 6c ILdRf local_0098


40282C: f5 LitI4: 0x817fdb0 135790000 (....)


402831: aa AddI4 ======加135790000


402832: 71 FStR4 local_0098


402835: 6c ILdRf local_0094 =====读入注册码


402838: 0a ImpAdCallFPR4: 


40283D: f4 LitI2_Byte: 0x18 24 (.)


40283F: eb CR8I2


402840: ab AddR8 =======加24


402841: e8 CI4R8


402842: 71 FStR4 local_009C


402845: 6c ILdRf local_0098


402848: 6c ILdRf local_009C


40284B: c7 EqI4 ====相等则真


40284C: 1c BranchF: 402867


40284F: 1b LitStr: http://duba.126.com ====正确注册结果


402852: 21 FLdPrThis


402853: 0f VCallAd 7b3fc348


402856: 19 FStAdFunc local_00A0


402859: 08 FLdPr local_00A0


40285C: 0d VCallHresult 7b3fbdf0


402861: 1a FFree1Ad local_00A0


402864: 1e Branch: 40286c


402867: 10 ThisVCallHresult 0


40286C: 13 ExitProcHresult


 


Proc: 40272c


402700: 27 LitVar_Missing


402703: 27 LitVar_Missing


402706: 27 LitVar_Missing


402709: f5 LitI4: 0x0 0 (....)


40270E: 3a LitVarStr: ( local_0094 )


402713: 4e FStVarCopyObj local_00A4


402716: 04 FLdRfVar local_00A4


402719: 0a ImpAdCallFPR4: 


40271E: 36 FFreeVar


402729: Lead1/c8 End


40272B: 13 ExitProcHresult


 


Successfully went through the program!


Now it's up to you to decipher it hehe!


Email josephco_@hotmail.com with any problems or errors


    
    
     
    
    
     

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