hi,

 

I want to create loader and need to change BytesToRead to 0 but how to call readfile in asm code

0012F130   0132A275  /CALL to ReadFile

0012F134   0000015C  |hFile = 0000015C (window)

0012F138   02724FF8  |Buffer = 02724FF8

0012F13C   000002F8  |BytesToRead = 2F8 (760.)

0012F140   0012F660  |pBytesRead = 0012F660

0012F144   00000000  \pOverlapped = NULL

thanks

Like this:

PUSH 0                                ; pOverlapped

PUSH EAX                              ; pBytesRead

PUSH 0                                ; BytesToRead

LEA EAX, DWORD PTR SS:[BufferAddress] ; Buffer

PUSH EDI                              ; hFile

CALL DWORD PTR DS:[kernel32.ReadFile]

yes like that thank you.

PUSH 0x0                                 ; /pOverlapped = NULL

LEA EAX,DWORD PTR DS:[0x12F660]          ; |

PUSH EAX                                 ; |pBytesRead

MOV EAX,DWORD PTR DS:[EAX]               ; |2F8

PUSH EAX                                 ; |BytesToRead

MOV EAX,DWORD PTR DS:[0x2724FF8]         ; |

PUSH EAX                                 ; |Buffer

MOV EAX,0x15C                            ; |15C 

PUSH EAX                                 ; |hFile

CALL kernel32.ReadFile                   ; \ReadFile