flat assembler
Message board for the users of flat assembler.

flat assembler > Main > Hook INT 13H

Author
Thread Post new topic Reply to topic
luish



Joined: 26 Jan 2018
Posts: 13
I want to hook INT 13h to when this interrupt read sector(s) i intercept it and i read the sector(s) in sector 10H(16) but OS kant bootstrap with my code. here is my source:
Code:
code: cli cs mov si,[4Ch] cs mov di,[4Eh] cs mov [180h],cx cs mov [182h],dx mov si,0 mov di,2000h cs mov [4Ch],si cs mov [4Eh],di sti mov si,2000h mov es,si mov si,payload mov di,0 mov cx,codelastbyte-payload cld repz movsb mov ax,201h push cs pop es mov bx,7c00h mov cx,7 mov dx,80h int 60h jmp 0:7C00h payload: ;NEW INT13H ;pushaw pushfw push ds push es push ss sti cld cmp ah,2h jnz gogo pusha MOV AH,3 MOV AL,1 MOV CH,0 MOV CL,10H MOV DH,0 MOV DL,80H INT 60H ;ORIGINAL INT 13H popa gogo: INT 60H pop ss pop es pop ds popfw iret codelastbyte:

what is wrong?
Post 09 Feb 2018, 05:27
View user's profile Send private message Reply with quote
Display posts from previous:
Post new topic Reply to topic

Jump to:  


< Last Thread | Next Thread >

Forum Rules:
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Copyright © 2004-2018, Tomasz Grysztar.

Powered by rwasa.