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Help with this code

Help with this code

Help with this code

(OP)
Hi all,

I'm very new to assembly language and I'm having trouble working out what the following code is doing. Can anyone explain what is happening?

0052F920  /> 55             PUSH EBP                               
;  <------------ START routine
0052F921  |. 8BEC           MOV EBP,ESP
0052F923  |. 83EC 08        SUB ESP,8
0052F926  |. 68 76554000    PUSH <JMP.&MSVBVM60.__vbaExceptHandler>  ;  SE handler installation
0052F92B  |. 64:A1 00000000 MOV EAX,DWORD PTR FS:[0]
0052F931  |. 50             PUSH EAX
0052F932  |. 64:8925 000000>MOV DWORD PTR FS:[0],ESP
0052F939  |. 83EC 3C        SUB ESP,3C
0052F93C  |. 53             PUSH EBX
0052F93D  |. 56             PUSH ESI
0052F93E  |. 57             PUSH EDI
0052F93F  |. 8965 F8        MOV DWORD PTR SS:[EBP-8],ESP
0052F942  |. C745 FC F84C40>MOV DWORD PTR SS:[EBP-4],Dft8.00404CF8
0052F949  |. 8B55 0C        MOV EDX,DWORD PTR SS:[EBP+C]             ;  //// check number....
0052F94C  |. 33C0           XOR EAX,EAX
0052F94E  |. 8D4D EC        LEA ECX,DWORD PTR SS:[EBP-14]
0052F951  |. 8945 EC        MOV DWORD PTR SS:[EBP-14],EAX
0052F954  |. 8945 E8        MOV DWORD PTR SS:[EBP-18],EAX
0052F957  |. FF15 30134000  CALL DWORD PTR DS:[<&MSVBVM60.__vbaStrCo>;  MSVBVM60.__vbaStrCopy
0052F95D  |. 83EC 10        SUB ESP,10
0052F960  |. 8B45 EC        MOV EAX,DWORD PTR SS:[EBP-14]
0052F963  |. 8BFC           MOV EDI,ESP
0052F965  |. B9 08000000    MOV ECX,8
0052F96A  |. 83EC 10        SUB ESP,10
0052F96D  |. BE 0B400000    MOV ESI,400B
0052F972  |. 890F           MOV DWORD PTR DS:[EDI],ECX
0052F974  |. 8B4D DC        MOV ECX,DWORD PTR SS:[EBP-24]
0052F977  |. 8D55 E8        LEA EDX,DWORD PTR SS:[EBP-18]
0052F97A  |. 894F 04        MOV DWORD PTR DS:[EDI+4],ECX
0052F97D  |. 8BCC           MOV ECX,ESP
0052F97F  |. 6A 02          PUSH 2
0052F981  |. 6A 02          PUSH 2
0052F983  |. 8947 08        MOV DWORD PTR DS:[EDI+8],EAX
0052F986  |. 8B45 E4        MOV EAX,DWORD PTR SS:[EBP-1C]
0052F989  |. 8947 0C        MOV DWORD PTR DS:[EDI+C],EAX
0052F98C  |. 8B45 BC        MOV EAX,DWORD PTR SS:[EBP-44]
0052F98F  |. 8931           MOV DWORD PTR DS:[ECX],ESI
0052F991  |. 8941 04        MOV DWORD PTR DS:[ECX+4],EAX
0052F994  |. 8B45 08        MOV EAX,DWORD PTR SS:[EBP+8]
0052F997  |. 50             PUSH EAX
0052F998  |. 8951 08        MOV DWORD PTR DS:[ECX+8],EDX
0052F99B  |. 8B55 C4        MOV EDX,DWORD PTR SS:[EBP-3C]
0052F99E  |. 8951 0C        MOV DWORD PTR DS:[ECX+C],EDX
0052F9A1  |. FF15 68104000  CALL DWORD PTR DS:[<&MSVBVM60.__vbaRaise>;  MSVBVM60.__vbaRaiseEvent
0052F9A7  |. 83C4 2C        ADD ESP,2C
0052F9AA  |. 68 B9F95200    PUSH Dft8.0052F9B9
0052F9AF  |. 8D4D EC        LEA ECX,DWORD PTR SS:[EBP-14]
0052F9B2  |. FF15 34144000  CALL DWORD PTR DS:[<&MSVBVM60.__vbaFreeS>;  MSVBVM60.__vbaFreeStr
0052F9B8  \. C3             RETN                                     ;  <-------------------------- FINISH routine
0052F9B9   . 8B4D 10        MOV ECX,DWORD PTR SS:[EBP+10]
0052F9BC   . 66:8B55 E8     MOV DX,WORD PTR SS:[EBP-18]
0052F9C0   . 5F             POP EDI
0052F9C1   . 5E             POP ESI
0052F9C2   . 66:8911        MOV WORD PTR DS:[ECX],DX
0052F9C5   . 8B4D F0        MOV ECX,DWORD PTR SS:[EBP-10]
0052F9C8   . 33C0           XOR EAX,EAX
0052F9CA   . 64:890D 000000>MOV DWORD PTR FS:[0],ECX
0052F9D1   . 5B             POP EBX
0052F9D2   . 8BE5           MOV ESP,EBP
0052F9D4   . 5D             POP EBP
0052F9D5   . C2 0C00        RETN 0C

 

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