mirror of
https://github.com/vxunderground/MalwareSourceCode.git
synced 2024-12-24 04:15:26 +00:00
67 lines
1.8 KiB
NASM
67 lines
1.8 KiB
NASM
; Interface to RS232INT.EXE module
|
||
CODESEG SEGMENT PARA PUBLIC 'CODE'
|
||
PUBLIC REFRESH
|
||
PUBLIC SETSENSE
|
||
PUBLIC SENDBREAK
|
||
PUBLIC BUFSIZE
|
||
PUBLIC RECEIVE
|
||
PUBLIC SEND
|
||
;
|
||
; TABLE OFF ADDRESSES TO BE FILLED FOR JUMPS
|
||
SZ DW 0
|
||
FIRST DW ?
|
||
SB DW 10H
|
||
DW ?
|
||
BF DW 20H
|
||
DW ?
|
||
RC DW 30H
|
||
DW ?
|
||
SN DW 40H
|
||
DW ?
|
||
REFRESH PROC FAR
|
||
ASSUME CS:CODESEG
|
||
SEGAD EQU 4F0H ;ADDRESS IN INTRA AREA OF SEG ADDRESS
|
||
CHNAD EQU 4F2H ;ADDRESS IN INTRA AREA OF CHAN # OFFSET
|
||
PUSH AX
|
||
PUSH BX
|
||
PUSH DS
|
||
MOV AX,0 ;SET DS TO 0
|
||
MOV DS,AX
|
||
MOV AX,DS:[SEGAD] ;GET SEG ADDRESS IN AX
|
||
MOV BX,0
|
||
LUPE: MOV FIRST[BX],AX ;STORE IN ADDR TABLE
|
||
ADD BX,4
|
||
CMP BX,20
|
||
JNE LUPE ;MODIFY 5 ADDRESSES
|
||
MOV BX,DS:[CHNAD] ;GET CHAN # OFFSET IN BX
|
||
MOV DS,AX ;NOW SET DATA SEG TO LOADED CODE
|
||
MOV BYTE PTR [BX],0 ;ZERO CHAN#
|
||
POP DS
|
||
POP BX
|
||
POP AX
|
||
RET
|
||
REFRESH ENDP
|
||
;
|
||
SETSENSE PROC FAR
|
||
JMP DWORD PTR SZ ;GO TO LOADED CODE ENTRY POINT
|
||
SETSENSE ENDP
|
||
;
|
||
SENDBREAK PROC FAR
|
||
JMP DWORD PTR SB ;GO TO LOADED CODE ENTRY POINT
|
||
SENDBREAK ENDP
|
||
;
|
||
BUFSIZE PROC FAR
|
||
JMP DWORD PTR BF ;GO TO LOADED CODE ENTRY POINT
|
||
BUFSIZE ENDP
|
||
;
|
||
RECEIVE PROC FAR
|
||
JMP DWORD PTR RC ;GO TO LOADED CODE ENTRY POINT
|
||
RECEIVE ENDP
|
||
;
|
||
SEND PROC FAR
|
||
JMP DWORD PTR SN ;GO TO LOADED CODE ENTRY POINT
|
||
SEND ENDP
|
||
;
|
||
CODESEG ENDS
|
||
END
|
||
|