53 lines
1.1 KiB
ArmAsm
53 lines
1.1 KiB
ArmAsm
; a hand-made GIF containing valid JavaScript code
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; abusing header to start a JavaScript comment
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; inspired by Saumil Shah's Deadly Pixels presentation
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; Ange Albertini, BSD Licence 2013
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; yamal gifjs.asm -o img.gif
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WIDTH equ 10799 ; equivalent to 2f2a, which is '/*' in ASCII, thus starting an opening comment
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HEIGHT equ 10799 ; just to make it easier to spot
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db 'GIF89a'
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dw WIDTH, HEIGHT
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db 0 ; GCT
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db -1 ; background color
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db 0 ; default aspect ratio
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;db 0fch, 0feh, 0fch
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;times COLORS db 0, 0, 0
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; no need of Graphic Control Extension
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; db 21h, 0f9h
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; db GCESIZE ; size
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; gce_start:
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; db 0 ; transparent background
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; dw 0 ; delay for anim
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; db 0 ; other transparent
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; GCESIZE equ $ - gce_start
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; db 0 ; end of GCE
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db 02ch ; Image descriptor
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dw 0, 0 ; NW corner
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dw WIDTH, HEIGHT ; w/h of image
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db 0 ; color table
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db 2 ; lzw size
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;db DATASIZE
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;data_start:
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; db 00, 01, 04, 04
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; DATASIZE equ $ - data_start
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db 0
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db 3bh ; GIF terminator
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; end of the GIF
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db '*/' ; closing the comment
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db '=1;' ; creating a fake use of that GIF89a string
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db 'alert("haxx");'
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