找到程序真正入口并进行脱壳
现在, 希望你没有关闭symbol loader. 假如你关掉的话,重新运行它,打开并装入已
压缩的notepad.exe
当你这次点击"Yes"时, 你会发现你已在进入Softice中了...
我把下面的代码贴出来并加上注解.
************************* 你在SICE中所见到的 *************************
**Softice中断时,你会在这儿. 一直按F10走过这部分代码
0041454F FFFF INVALID
00414556 55 PUSH EBP
00414557 8BEC MOV EBP,ESP
00414559 56 PUSH ESI
0041455A 57 PUSH EDI
0041455B 756B JNZ 004145C8 (NO JUMP)
0041455D 6800010000 PUSH 00000100
00414562 E8D60B0000 CALL 0041513D
00414567 83C404 ADD ESP,04
0041456A 8B7508 MOV ESI,[EBP+08]
0041456D A3B4F14000 MOV [0040F1B4],EAX
00414572 85F6 TEST ESI,ESI
00414574 7423 JZ 00414599 (JUMP)
00414599 33FF XOR EDI,EDI
0041459B 57 PUSH EDI
0041459C 893D8C184100 MOV [0041188C],EDI
004145A2 FF1510224100 CALL [KERNEL32!GetModuleHandleA]
004145A8 8BF0 MOV ESI,EAX
004145AA 68FF000000 PUSH 000000FF
004145AF A1B4F14000 MOV EAX,[0040F1B4]
004145B4 897D10 MOV [EBP+10],EDI
004145B7 C7450C01000000 MOV DWORD PTR [EBP+0C],00000001
004145BE 50 PUSH EAX
004145BF 56 PUSH ESI
004145C0 FF15F4214100 CALL [KERNEL32!GetModuleFileNameA]
004145C6 EB03 JMP 004145CB (JUMP)
004145CB E830EAFFFF CALL 00413000
004145D0 FF7510 PUSH DWORD PTR [EBP+10]
004145D3 FF750C PUSH DWORD PTR [EBP+0C]
004145D6 56 PUSH ESI
004145D7 E806000000 CALL 004145E2
**当你走过这个位于004145D7的CALL, 压缩过的notepad.exe就自由运行了. 再次用
symbol loader装入. 再次来到这个CALL时, 按F8追进去. 你将看到以下代码. 不
过记着先BPX 004145D7.
004145E2 64A100000000 MOV EAX,FS:[00000000]
004145E8 55 PUSH EBP
004145E9 8BEC MOV EBP,ESP
004145EB 6AFF PUSH FF
004145ED 6810E04000 PUSH 0040E010
004145F2 68EC5D4100 PUSH 00415DEC
004145F7 50 PUSH EAX
004145F8 64892500000000 MOV FS:[00000000],ESP
004145FF 83EC14 SUB ESP,14
00414602 C745E401000000 MOV DWORD PTR [EBP-1C],00000001
00414609 53 PUSH EBX
0041460A 56 PUSH ESI
0041460B 57 PUSH EDI
0041460C 8965E8

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