use strict;
use warnings;

my $s = q<ÃÎÌËÁßÍÏÎÌÐÏÊÐÎÌßÏËÒÏÇÒÊÆßÓœž“ÏÑ–‘™Áß‘ŠÆÌÇÌÑ‘ŠŒ–šÑœ’ß
+™>;
print pack "C*", map { $_ ^ 255 } unpack "C*", $s;

[download]
<134> 2013/05/13 04-08-59 <local0.info> nu9383.nuspire.com pf

This only works if I run the code in an ASCII encoded file, there doesn't seem to be utf-8 involded here.

unpack "C*", $s; returns a list consisting of the value of each byte in $s. pack with "C*" takes a list of bytes and turns it into a string. Read perlpacktut for more information on that.

In reply to Re^3: un obfuscate logfiles with xor by Eily
in thread un obfuscate logfiles with xor by golgiapparatus

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