常见程序入口点(OEP)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 C++ 6.0 [Overlay] E语言

    00403831 >/$  55            PUSH EBP
    00403832  |.  8BEC          MOV EBP,ESP
    00403834  |.  6A FF         PUSH -1
    00403836  |.  68 F0624000   PUSH Nisy521.004062F0
    0040383B  |.  68 A44C4000   PUSH Nisy521.00404CA4                    ;  SE 处理程序安装
    00403840  |.  64:A1 0000000>MOV EAX,DWORD PTR FS:[0]
00403846  |.  50            PUSH EAX
    00403847  |.  64:8925 00000>MOV DWORD PTR FS:[0],ESP


    Microsoft Visual Basic 5.0 / 6.0

    00401166  - FF25 6C104000   JMP DWORD PTR DS:[<&MSVBVM60.#100>]      ; MSVBVM60.ThunRTMain
    0040116C >  68 147C4000     PUSH PACKME.00407C14
    00401171    E8 F0FFFFFF     CALL <JMP.&MSVBVM60.#100>
    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 <jmp.&msvbvm60.ThunRTMain>
    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 <JMP.&KERNEL32.GetModuleHandleA>    ; \GetModuleHandleA
    00401663   .  8BD0          MOV EDX,EAX

Dasm:

00401000 >/$  6A 00         PUSH 0                                   ; /pModule = NULL
    00401002  |.  E8 C50A0000   CALL <JMP.&KERNEL32.GetModuleHandleA>    ; \GetModuleHandleA
    00401007  |.  A3 0C354000   MOV DWORD PTR DS:[40350C],EAX
    0040100C  |.  E8 B50A0000   CALL <JMP.&KERNEL32.GetCommandLineA>     ; [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