常见编程语言的OEP入口点特征

Borland Delphi 6.0 - 7.0

00509CB0 > $ 55 PUSH EBP

00509CB1 . 8BEC MOV EBP,ESP

00509CB3 . 83C4 EC ADD ESP,-14

00509CB6 . 53 PUSH EBX

00509CB7 . 56 PUSH ESI

00509CB8 . 57 PUSH EDI

00509CB9 . 33C0 XOR EAX,EAX

00509CBB . 8945 EC MOV DWORD PTR SS:[EBP-14],EAX

00509CBE . B8 20975000 MOV EAX,unpack.00509720

00509CC3 . E8 84CCEFFF CALL unpack.0040694C

Microsoft Visual C++ 6.0

00496EB8 >/$ 55 PUSH EBP ; (初始 cpu 选择)

00496EB9 |. 8BEC MOV EBP,ESP

00496EBB |. 6A FF PUSH -1

00496EBD |. 68 40375600 PUSH Screensh.00563740

00496EC2 |. 68 8CC74900 PUSH Screensh.0049C78C ; SE 处理程序安装

00496EC7 |. 64:A1 0000000>MOV EAX,DWORD PTR FS:[0]

00496ECD |. 50 PUSH EAX

00496ECE |. 64:8925 00000>MOV DWORD PTR FS:[0],ESP

00496ED5 |. 83EC 58 SUB ESP,58

Microsoft Visual Basic 5.0 / 6.0

00401166 - FF25 6C104000 JMP DWORD PTR DS:[] ; MSVBVM60.ThunRTMain

0040116C > 68 147C4000 PUSH PACKME.00407C14

00401171 E8 F0FFFFFF CALL

00401176 0000 ADD BYTE PTR DS:[EAX],AL

00401178 0000 ADD BYTE PTR DS:[EAX],AL

0040117A 0000 ADD BYTE PTR DS:[EAX],AL

0040117C 3000 XOR BYTE PTR DS:[EAX],AL

或省略第一行的JMP

00401FBC > 68 D0D44000 push dumped_.0040D4D0

00401FC1 E8 EEFFFFFF call

00401FC6 0000 add byte ptr ds:[eax],al

00401FC8 0000 add byte ptr ds:[eax],al

00401FCA 0000 add byte ptr ds:[eax],al

00401FCC 3000 xor byte ptr ds:[eax],al

00401FCE 0000 add byte ptr ds:[eax],al

BC++

0040163C > $ /EB 10 JMP SHORT BCLOCK.0040164E

0040163E |66 DB 66 ; CHAR 'f'

0040163F |62 DB 62 ; CHAR 'b'

00401640 |3A DB 3A ; CHAR ':'

00401641 |43 DB 43 ; CHAR 'C'

00401642 |2B DB 2B ; CHAR '+'

00401643 |2B DB 2B ; CHAR '+'

00401644 |48 DB 48 ; CHAR 'H'

00401645 |4F DB 4F ; CHAR 'O'

00401646 |4F DB 4F ; CHAR 'O'

00401647 |4B DB 4B ; CHAR 'K'

00401648 |90 NOP

00401649 |E9 DB E9

0040164A . |98E04E00 DD OFFSET BCLOCK.___CPPdebugHook

0040164E > \A1 8BE04E00 MOV EAX,DWORD PTR DS:[4EE08B]

00401653 . C1E0 02 SHL EAX,2

00401656 . A3 8FE04E00 MOV DWORD PTR DS:[4EE08F],EAX

0040165B . 52 PUSH EDX

0040165C . 6A 00 PUSH 0 ; /pModule = NULL

0040165E . E8 DFBC0E00 CALL ; \GetModuleHandleA

00401663 . 8BD0 MOV EDX,EAX

Dasm

00401000 >/$ 6A 00 PUSH 0 ; /pModule = NULL

00401002 |. E8 C50A0000 CALL ; \GetModuleHandleA

00401007 |. A3 0C354000 MOV DWORD PTR DS:[40350C],EAX

0040100C |. E8 B50A0000 CALL ; [GetCommandLineA

00401011 |. A3 10354000 MOV DWORD PTR DS:[403510],EAX

00401016 |. 6A 0A PUSH 0A ; /Arg4 = 0000000A

00401018 |. FF35 10354000 PUSH DWORD PTR DS:[403510] ; |Arg3 = 00000000

0040101E |. 6A 00 PUSH 0 ; |Arg2 = 00000000

00401020 |. FF35 0C354000 PUSH DWORD PTR DS:[40350C] ; |Arg1 = 00000000

VC8 -> Microsoft Corporation

0043DEE1 Q> E8 2D8D0000 call QQRecord.00446C13 ; (Initial CPU selection)

0043DEE6 ^ E9 16FEFFFF jmp QQRecord.0043DD01

0043DEEB 55 push ebp

0043DEEC 8BEC mov ebp,esp

0043DEEE 51 push ecx

0043DEEF 53 push ebx

0043DEF0 8B45 0C mov eax,dword ptr ss:[ebp+C]

0043DEF3 83C0 0C add eax,0C

0043DEF6 8945 FC mov dword ptr ss:[ebp-4],eax

0043DEF9 64:8B1D 00000000 mov ebx,dword ptr fs:[0]

0043DF00 8B03 mov eax,dword ptr ds:[ebx]

0043DF02 64:A3 00000000 mov dword ptr fs:[0],eax

0043DF08 8B45 08 mov eax,dword ptr ss:[ebp+8]

0043DF0B 8B5D 0C mov ebx,dword ptr ss:[ebp+C]

0043DF0E 8B6D FC mov ebp,dword ptr ss:[ebp-4]

0043DF11 8B63 FC mov esp,dword ptr ds:[ebx-4]

0043DF14 FFE0 jmp eax

0043DF16 5B pop ebx

0043DF17 C9 leave

0043DF18 C2 0800 retn 8

Borland C++ 1999

004014D0 VB> /EB 10 jmp short VBto_UNP.004014E2

004014D2 |66:623A bound di,dword ptr ds:[edx]

004014D5 |43 inc ebx

004014D6 |2B2B sub ebp,dword ptr ds:[ebx]

004014D8 |48 dec eax

004014D9 |4F dec edi

004014DA |4F dec edi

004014DB |4B dec ebx

004014DC |90 nop

004014DD -|E9 980057>jmp 0097157A

004014E2 \A1 8B0057>mov eax,dword ptr ds:[57008B]

004014E7 C1E0 02 shl eax,2

004014EA A3 8F0057>mov dword ptr ds:[57008F],eax

004014EF 52 push edx

004014F0 6A 00 push 0

004014F2 E8 C7D116>call <jmp.&kernel32.GetModuleHandleA>

PowerBuilder

00410D50: 55 PUSH EBP

00410D51: 8BEC MOV EBP, ESP

00410D53: 53 PUSH EBX

00410D54: 56 PUSH ESI

00410D55: 57 PUSH EDI

00410D56: BB00604100 MOV EBX, 00416000

00410D5B: 662EF705D213410004000F85 TEST WORD PTR CS:[004113D2], 850F0004

00410D67: DB00 FILD DWORD PTR [EAX]

00410D69: 0000 ADD [EAX], AL

00410D6B: 6A00 PUSH 00000000

00410D6D: FF1554844100 CALL [00418454] ; CoInitialize

00410D73: E892020000 CALL 0041100A

00410D78: C7830801000001000000 MOV [EBX+00000108], 00000001

00410D82: 8D8390020000 LEA EAX, [EBX+00000290]

00410D88: 50 PUSH EAX

00410D89: FF15DC834100 CALL [004183DC] ; GetVersionExA

00410D8F: 83EC44 SUB ESP, 00000044

00410D92: C7042444000000 MOV [ESP], 00000044

00410D99: C744242C00000000 MOV [ESP+2C], 00000000

00410DA1: 54 PUSH ESP

00410DA2: FF15D4834100 CALL [004183D4] ; GetStartupInfoA

00410DA8: B80A000000 MOV EAX, 0000000A

00410DAD: F744242C01000000 TEST [ESP+2C], 00000001

00410DB5: 7405 JZ 410DBC

00410DB7: 0FB7442430 MOVZX EAX, WORD PTR [ESP+30]

00410DBC: 83C444 ADD ESP, 00000044

00410DBF: 8983FE000000 MOV [EBX+000000FE], EAX

00410DC5: FF15B0834100 CALL [004183B0] ; GetCommandLineA