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[求助][求助][求助]大家帮看看这个exe怎么脱壳,感觉用到了QueryPerformanceCounter 反调试
发表于: 2013-4-29 22:03 4175

[求助][求助][求助]大家帮看看这个exe怎么脱壳,感觉用到了QueryPerformanceCounter 反调试

2013-4-29 22:03
4175
PEID v0.95 什么都没找到

OD加载完
00421AE1 > $  E8 25B70000   CALL tradeage.0042D20B
00421AE6   .^ E9 40FEFFFF   JMP tradeage.0042192B
。。。。。

F7步入,
0042D20B  /$  55            PUSH EBP
0042D20C  |.  8BEC          MOV EBP,ESP
0042D20E  |.  83EC 10       SUB ESP,10
0042D211  |.  A1 30B64400   MOV EAX,DWORD PTR DS:[44B630]

。。。

0042D23F  |.  50            PUSH EAX                                                        ; /pFileTime
0042D240  |.  FF15 10B14300 CALL DWORD PTR DS:[<&KERNEL32.GetSystemTimeAsFileTime>]         ; \GetSystemTimeAsFileTime
0042D246  |.  8B75 FC       MOV ESI,DWORD PTR SS:[EBP-4]
0042D249  |.  3375 F8       XOR ESI,DWORD PTR SS:[EBP-8]
0042D24C  |.  FF15 34B04300 CALL DWORD PTR DS:[<&KERNEL32.GetCurrentProcessId>]             ; [GetCurrentProcessId
0042D252  |.  33F0          XOR ESI,EAX
0042D254  |.  FF15 BCB04300 CALL DWORD PTR DS:[<&KERNEL32.GetCurrentThreadId>]              ; [GetCurrentThreadId
0042D25A  |.  33F0          XOR ESI,EAX
0042D25C  |.  FF15 38B04300 CALL DWORD PTR DS:[<&KERNEL32.GetTickCount>]                    ; [GetTickCount
0042D262  |.  33F0          XOR ESI,EAX
0042D264  |.  8D45 F0       LEA EAX,DWORD PTR SS:[EBP-10]
0042D267  |.  50            PUSH EAX                                                        ; /pPerformanceCount
0042D268  |.  FF15 3CB04300 CALL DWORD PTR DS:[<&KERNEL32.QueryPerformanceCounter>]         ; \QueryPerformanceCounter

貌似用了QueryPerformanceCounter反Debug

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这是VC启动库函数,先学下识别启动库吧.
00421AE1 > $ E8 25B70000 CALL tradeage.0042D20B
00421AE6 .^ E9 40FEFFFF JMP tradeage.0042192B
。。。。。


F7步入,
0042D20B /$ 55 PUSH EBP
0042D20C |. 8BEC MOV EBP,ESP
0042D20E |. 83EC 10 SUB ESP,10
0042D211 |. A1 30B64400 MOV EAX,DWORD PTR DS:[44B630]

。。。

0042D23F |. 50 PUSH EAX ; /pFileTime
0042D240 |. FF15 10B14300 CALL DWORD PTR DS:[<&KERNEL32.GetSystemTimeAsFileTime>] ; \GetSystemTimeAsFileTime
0042D246 |. 8B75 FC MOV ESI,DWORD PTR SS:[EBP-4]
0042D249 |. 3375 F8 XOR ESI,DWORD PTR SS:[EBP-8]
0042D24C |. FF15 34B04300 CALL DWORD PTR DS:[<&KERNEL32.GetCurrentProcessId>] ; [GetCurrentProcessId
0042D252 |. 33F0 XOR ESI,EAX
0042D254 |. FF15 BCB04300 CALL DWORD PTR DS:[<&KERNEL32.GetCurrentThreadId>] ; [GetCurrentThreadId
0042D25A |. 33F0 XOR ESI,EAX
0042D25C |. FF15 38B04300 CALL DWORD PTR DS:[<&KERNEL32.GetTickCount>] ; [GetTickCount
0042D262 |. 33F0 XOR ESI,EAX
0042D264 |. 8D45 F0 LEA EAX,DWORD PTR SS:[EBP-10]
0042D267 |. 50 PUSH EAX ; /pPerformanceCount
0042D268 |. FF15 3CB04300 CALL DWORD PTR DS:[<&KERNEL32.QueryPerformanceCounter>] ; \QueryPerformanceCounter
2013-4-29 22:23
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