[Chicago-talk] Converting HEX to ASCII

Andy_Bach at wiwb.uscourts.gov Andy_Bach at wiwb.uscourts.gov
Mon Aug 31 11:19:35 PDT 2015

Hmm, not really all hex so (via perldoc -q decode):
$ echo '%#x3cIMG 
' | perl -pe 's/&#([[:xdigit:]]+);/chr $1/eg'
%#x3cIMG SRC=javascript:alert( 'XSS')%#x3e

if it were actually hex and not decimal ascii you'd add a call to "hex" in 
' | perl -pe 's/&#([[:xdigit:]]+);/chr hex $1/eg'

Andy Bach
Systems Mangler
Internet: andy_bach at wiwb.uscourts.gov
Voice: (608) 261-5738, Cell: (608) 658-1890

“That which can be asserted without evidence, can be dismissed without 
― Christopher Hitchens

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