Vincent Gable’s Blog

December 2, 2008

Bug In The Machine

Filed under: Announcement,Programming,Reverse Engineering | , , ,
― Vincent Gable on December 2, 2008

I was going through some old (OS 9 old at youngest!) backups, and found this dump from a MacsBug session. You can actually see a bug sitting in memory! To me it looks like the bug is inside an old television, with distortion sweeping across the screen, so some of the bug’s left side is wrapped around to the right.

 Displaying memory from 1D9F8CB0
  1D9F8CB0  •???•???•???•???•???•???•???•???•???•???•???•???•???•???•???•???
  1D9F8CF0  •???•???•???•???•???•???•???•???•???•???•???•???•???•???•???•???
  1D9F8D30  •???•???•???•???•???•???•???•???•???•???•???•???•???•???•???•???
  1D9F8D70  •???•???•???•???•üÖ`´••••••P•••Ñ•y•pÄ@•••••Ä•@•••••••••H•••H••••
  1D9F8DB0  •••••••••••É9ÿ•••••••••••••••••••üçÄ´••••• •••‚ 0000000000000000
  1D9F8DF0  0000000000000000000000000000000000000000000000000000000000000000
  1D9F8E30  0000000000000000000000000000000000000000000000000000000000000000
  1D9F8E70  0000000000000000000000000000000000000000000000000000000000000000
  1D9F8EB0  0000000000000000000000000000000000000000000000000000000000000000
  1D9F8EF0  0000000000000000000000000000000000000000000000000000000000000000
  1D9F8F30  0000000000000000000000000000000000000000000000000000000000000000
  1D9F8F70  0000000000000000000000000000000000000000000000000000000%***$*#**
  1D9F8FB0  #*$$*$*#*#**$$*00*$*$*$$**#*#*#*#*#*#**#%00000000000000*•!#•!!!!
  1D9F8FF0  !!!•!!!!!!!!!!!0%!!!!#!!!!!!!!!!!!!!!!!!*00000000000000*!"!•!!!!
  1D9F9030  !!••!!!!!!!!!!!0.!!••!!!!!!!!!!•!•!!•!!!#00000000000000*!!!(•!!!
  1D9F9070  !!!(•!!!!!!!!!!0%!!((!!!!!!!!•!!!!!!!!!!*00000000000000#!!! ••! 
  1D9F90B0  •••••••••••••••0*••!•••••••••••••••••••••00000000000000*!!!•••00
  1D9F90F0  •••••••••••••••0#••!•••••••••••!00•••••••00000000000000#!!!••#0/
  1D9F9130  0&••••••••••••••!••! •••••••••+0$0.••••••00000000000000#!!!•!0••
  1D9F9170  !00#••••••••!000000$!•••••••!00!••,••••• 00000000000000*!!!•0%••
  1D9F91B0  ••%0%••••••%00000000/••••••,0.••••%0•••••00000000000000$!••00•••
  1D9F91F0  ••!*00••••000000000000••••00!••••••00#•••00000000000000*!!/0••••
  1D9F9230  ••!••/0$•00000000000000••0$••••••••*0%!•!00000000000000#•#0$••••
  1D9F9270  •!•••!$•*00000000000000%•!•••••••!(•*0*• 00000000000000*•00••••!
  1D9F92B0  (•••••••0000000000000000•••••••!* •••%0•!00000000000000*00••••!0
  1D9F92F0  &!•••••/00000000000000000!•••'$00!••••00*00000000000000*•*!•••00
  1D9F9330  000••••000000000000000000•!•*00/%0••••••*00000000000000$!•!••$0•
  1D9F9370  ••%00•!000000000000000000*$00%!••0#••••••00000000000000$!••••0.•
  1D9F93B0  ••••$•%0000000000000000000•%!•••••0!••••!00000000000000*!•(•00••
  1D9F93F0  •••(••00000000000000000000!! •••••/0"••••00000000000000#!!!$0•••
  1D9F9430  ••!!••00000000000000000000•!!••••!#0%!•••00000000000000*!!*0*•••
  1D9F9470  ••!•••00000000000000000000*!•••("!••0#•••00000000000000*!!0,••••
  1D9F94B0  •! •••00000000000000000000#!•!•!••••/0•• 00000000000000#!%0!••••
  1D9F94F0  ••••••00000000000000000000#•*••••••••0%!!00000000000000*!•$•••%0
  1D9F9530  0000#•00000000000000000000#%00000%•••!•!•00000000000000*!!!••!0%
  1D9F9570  *•! ••00000000000000000000*#*$!!•0!•••••*00000000000000*!(!••00!
  1D9F95B0  ••••••00000000000000000000••!!•••/0•••••#00000000000000#!!!•$0••
  1D9F95F0  ••••••%0000000000000000000!(!!••••0%•••••00000000000000*!!!(0*••
  1D9F9630  ••!!!!.000000000000000000.!!!••!!!%0-!••!00000000000000*!(•0,•••
  1D9F9670  ••!•!•!000000000000000000•#*•••••••,0••••00000000000000$!!$0••••
  1D9F96B0  •!•$00•/00000000000000000•00/*••••••0.!•!00000000000000*!!!!••••
  1D9F96F0  #000•••!0000000000000000$(•.00%••••• •!!•00000000000000*!!••••••
  1D9F9730  00!•••••/000000000000000!!(!!*00•••••• !•00000000000000$!!(••••$
  1D9F9770  0•••••••!00000000000000*!!!!!•!0!••••••!$00000000000000#(!!••••0
  1D9F97B0  ,••••••!!$000000000000$!!!!!!•!00•••••••$00000000000000*!!!••••0
  1D9F97F0   ••••!••••!0000000000$(!!!!!••••0*••••••!00000000000000#!!!•••,/
  1D9F9830  ••••!!!•••••00000000*!!!!"!!••••/0••••••!00000000000000*!!!•••0!
  1D9F9870  ••••••••••••••$%%%•!!!!!!!!••••• 0)••••••00000000000000#!!!••/0•
  1D9F98B0  •••!!•••••••••.,/•(•!!!!!!•••••••0,!!••••00000000000000*!!!••0!•
  1D9F98F0  •••••••••••••00000•!!!!!!••••••••!0!!••••00000000000000#!!!•••••
  1D9F9930  ••!!••••••••.000000!!!!!••••••••••••!!••!00000000000000$••!•••••
  1D9F9970  ••!•••••••••0000000!• •••••••••••••••!•••00000000000000*!•!•••••
  1D9F99B0  •!!•••••••••0000000$!••••••••••••••••!!•!00000000000000#!!!•••••
  1D9F99F0  •!•••••••••!0000000*!"••••••••••••••••!• 00000000000000#!!••••••
  1D9F9A30  ••••••••••••0000000#!!••••••••••••••••••!00000000000000#!!!•••••
  1D9F9A70  ••••••••••••0000000•!!!••••••••••••••••••00000000000000$!"••••••
  1D9F9AB0  •••••••••••••000000!!!••••••••••••••••••!00000000000000*!!!•••••
  1D9F9AF0  •••••••••••••/0000•(!!!••••••••••••••••• 00000000000000#!•!•••••
  1D9F9B30  ••••••••••••••!*$•!!!!!••••••••••••••••••00000000000000#!!••••••
  1D9F9B70  ••••••••••••••••!!!"!!!••••••••••••••••••00000000000000*!!!•••••
  1D9F9BB0  •••••••••••••••••!!!!!•••••••••••••••••••00000000000000%$#*!!•! 
  1D9F9BF0  •!!!•• ! •! • • !#*$*#!!!•! !! !•• ! • !*00000000000000000000000
  1D9F9C30  0000000000000000000000000000000000000000000000000000000000000000
  1D9F9C70  0000000000000000000000000000000000000000000000000000000000000000
  1D9F9CB0  0000000000000000000000000000000000000000000000000000000000000000
  1D9F9CF0  0000000000000000000000000000000000000000000000000000000000000000
  1D9F9D30  0000000000000000000000000000000000000000000000000000000000000000
  1D9F9D70  0000000000000000000000000000000000000000000000000000000000000000
  1D9F9DB0  0000000000000000000000000000000000000000000000000000000000000000
  1D9F9DF0  0000000000000000000000000000000000000000000000000000000000000000
  1D9F9E30  0000000000000000000000000000000000000000000000000000000000000000
  1D9F9E70  0000000000000000000000000000000000000000000000000000000000000000
 Unrecognized symbol 'prinf'
 Closing log

I swear this is a real memory dump of a sold-for-money application that I didn’t have any part in writing. Unfortunately I don’t remember some specifics, like which application it was.

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