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心灵感应 V1.1 算法分析
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日期:2007年6月2日 作者: 查看:[大字体
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应用平台: Win9x/NT/2000/XP 破解工具: EXDEC,FI
软件介绍: 心灵感应小游戏,它可以猜出你心里想的什么。 在网上转了一圈,来到天空下载站,发现这个软件蛮有意思的,就下载了下来,玩了两遍,居然不能玩了,要注册。怎么办?破了它。首先用FI检测一下,还好无壳,一看傻了发觉这是VB,而且是用P-CODE方式编译的。不管它了,用EXDEC载入看一看,下面就是它的主要内容和算法: Proc: 5da928
5DA774: 1b LitStr: c:\ 5DA777: 43 FStStrCopy local_0090 5DA77A: 04 FLdRfVar local_0090 5DA77D: 0b ImpAdCallI2 5da0f4 5DA782: 71 FStR4 local_0094 5DA785: 04 FLdRfVar local_008C 5DA788: 05 ImpAdLdRf: 5dc03c 5DA78B: 24 NewIfNullPr 494dd0 (Form2) 5DA78E: 0f VCallAd text 5DA791: 19 FStAdFunc local_0088 5DA794: 08 FLdPr local_0088 5DA797: 0d VCallHresult get__ipropTEXTEDIT 〈-------这里取机器码 5DA79C: 6c ILdRf local_008C 5DA79F: 0a ImpAdCallFPR4: 5DA7A4: ed CR8R8 5DA7A5: 6c ILdRf local_0094 5DA7A8: ec CR8I4 5DA7A9: f5 LitI4: 0xacbd 44221 (....) 5DA7AE: ec CR8I4 <--------先将机器码除以44221并取整 5DA7AF: b6 DivR8 5DA7B0: f5 LitI4: 0x68660 427616 (...) 5DA7B5: ec CR8I4 5DA7B6: ab AddR8 <------然后再加上427616,结果得到的数字就是注册码 5DA7B7: Lead0/e6 FnIntR8 5DA7B9: ed CR8R8 5DA7BA: c8 EqR4 <---------判断注册码真假 5DA7BB: 32 FFreeStr 5DA7C2: 1a FFree1Ad local_0088 5DA7C5: 1c BranchF: 5DA8D1 <--------一跳就完蛋了 5DA7C8: 04 FLdRfVar local_008C 5DA7CB: 21 FLdPrThis 5DA7CC: 0f VCallAd (object 4 ) 5DA7CF: 19 FStAdFunc local_0088 5DA7D2: 08 FLdPr local_0088 5DA7D5: 0d VCallHresult 禚d 5DA7DA: 04 FLdRfVar local_0090 5DA7DD: 21 FLdPrThis 5DA7DE: 0f VCallAd (object 4 ) 5DA7E1: 19 FStAdFunc local_0098 5DA7E4: 08 FLdPr local_0098 5DA7E7: 0d VCallHresult 禚d 5DA7EC: 6c ILdRf local_0090 5DA7EF: Lead0/ee FnLenBStr 5DA7F1: 59 PopTmpLdAdStr local_00AC 5DA7F4: 3e FLdZeroAd local_008C 5DA7F7: Lead2/59 PopTmpLdAdStr local_00A8 5DA7FB: f5 LitI4: 0x1 1 (....) 5DA800: 59 PopTmpLdAdStr local_00A4 5DA803: 1b LitStr: password 5DA806: 43 FStStrCopy local_00A0 5DA809: 04 FLdRfVar local_00A0 5DA80C: 1b LitStr: software\wally 5DA80F: 43 FStStrCopy local_009C 5DA812: 04 FLdRfVar local_009C 5DA815: f5 LitI4: 0x80000002 -2147483646 (....) 5DA81A: 59 PopTmpLdAdStr local_0094 5DA81D: 0a ImpAdCallFPR4: 5da564 5DA822: 32 FFreeStr 5DA82D: 29 FFreeAd: 5DA834: f5 LitI4: 0x2 2 (....) 5DA839: 59 PopTmpLdAdStr local_00AC 5DA83C: 1b LitStr: 11 5DA83F: 43 FStStrCopy local_009C 5DA842: 04 FLdRfVar local_009C 5DA845: f5 LitI4: 0x1 1 (....) 5DA84A: 59 PopTmpLdAdStr local_00A4 5DA84D: 1b LitStr: timest 5DA850: 43 FStStrCopy local_0090
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