<s>
Lamer	B-Device
Exterminator	I-Device
is	O
a	O
computer	O
virus	O
created	O
for	O
the	O
Amiga	B-Device
.	O
</s>
<s>
It	O
is	O
a	O
boot	B-Device
block	I-Device
virus	O
contained	O
in	O
the	O
first	O
1024	O
bytes	O
of	O
the	O
disk	O
.	O
</s>
<s>
Variants	O
of	O
the	O
virus	O
are	O
known	O
to	O
use	O
one	O
of	O
three	O
different	O
decrypt	O
routines	O
defined	O
by	O
The	O
Amiga	B-Device
Virus	O
Encyclopedia	O
.	O
</s>
<s>
A	O
detection	O
program	O
can	O
look	O
for	O
any	O
of	O
the	O
known	O
decrypt	O
routines	O
on	O
the	O
boot	B-Device
block	I-Device
area	O
of	O
the	O
disk	O
,	O
or	O
alternatively	O
try	O
to	O
blindly	O
brute	O
force	O
decrypt	O
them	O
.	O
</s>
<s>
The	O
first	O
decrypt	O
routine	O
is	O
a	O
simple	O
XOR	B-Application
of	O
every	O
byte	O
which	O
only	O
takes	O
a	O
maximum	O
of	O
256	O
attempts	O
to	O
decrypt	O
.	O
</s>
<s>
The	O
first	O
two	O
versions	O
(	O
and	O
variants	O
that	O
use	O
the	O
same	O
decrypt	O
routines	O
)	O
,	O
can	O
also	O
be	O
identified	O
as	O
containing	O
an	O
identification	O
word	O
0xABCD	O
,	O
as	O
the	O
last	O
data	O
on	O
the	O
boot	B-Device
block	I-Device
containing	O
anything	O
but	O
zero	O
values	O
.	O
</s>
<s>
Remains	O
RAM	O
resident	O
(	O
allocating	O
1024	O
bytes	O
and	O
identifying	O
itself	O
:	O
'	O
The	O
LAMER	B-Device
Exterminator	I-Device
!	O
</s>
