<s>
Radare2	B-Language
(	O
also	O
known	O
as	O
r2	O
)	O
is	O
a	O
complete	O
framework	B-Architecture
for	O
reverse-engineering	O
and	O
analyzing	O
binaries	O
;	O
composed	O
of	O
a	O
set	O
of	O
small	O
utilities	O
that	O
can	O
be	O
used	O
together	O
or	O
independently	O
from	O
the	O
command	B-Application
line	I-Application
.	O
</s>
<s>
Built	O
around	O
a	O
disassembler	O
for	O
computer	O
software	O
which	O
generates	O
assembly	B-Language
language	I-Language
source	O
code	O
from	O
machine-executable	O
code	O
,	O
it	O
supports	O
a	O
variety	O
of	O
executable	B-Application
formats	I-Application
for	O
different	O
processor	B-General_Concept
architectures	I-General_Concept
and	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
Radare2	B-Language
was	O
created	O
in	O
February	O
2006	O
,	O
aiming	O
to	O
provide	O
a	O
free	B-Application
and	O
simple	O
command-line	B-Application
interface	I-Application
for	O
a	O
hexadecimal	B-Application
editor	I-Application
supporting	O
64	O
bit	O
offsets	O
to	O
make	O
searches	O
and	O
recovering	O
data	O
from	O
hard-disks	B-Device
,	O
for	O
forensic	O
purposes	O
.	O
</s>
<s>
Since	O
then	O
,	O
the	O
project	O
has	O
grown	O
with	O
the	O
aim	O
changed	O
to	O
provide	O
a	O
complete	O
framework	B-Architecture
for	O
analyzing	O
binaries	O
while	O
adhering	O
to	O
several	O
principles	O
of	O
the	B-Operating_System
Unix	I-Operating_System
philosophy	I-Operating_System
.	O
</s>
<s>
In	O
2016	O
,	O
the	O
first	O
r2con	O
took	O
place	O
in	O
Barcelona	O
,	O
gathering	O
more	O
than	O
100	O
participants	O
,	O
featuring	O
various	O
talks	O
about	O
various	O
features	O
and	O
improvements	O
of	O
the	O
framework	B-Architecture
.	O
</s>
<s>
Radare2	B-Language
has	O
been	O
the	O
focus	O
of	O
multiple	O
presentations	O
at	O
several	O
high-profile	O
security	O
conferences	O
,	O
like	O
the	O
,	O
hack.lu,	O
33c3	O
.	O
</s>
<s>
Radare2	B-Language
has	O
a	O
steep	O
learning	B-General_Concept
curve	I-General_Concept
since	O
its	O
main	O
executable	B-Application
binaries	I-Application
are	O
operated	O
by	O
command	B-Application
line	I-Application
and	O
does	O
not	O
have	O
a	O
GUI	B-Application
by	O
itself	O
.	O
</s>
<s>
Originally	O
built	O
around	O
a	O
hexadecimal	B-Application
editor	I-Application
,	O
it	O
has	O
now	O
a	O
multitude	O
of	O
tools	O
and	O
features	O
,	O
and	O
also	O
bindings	O
for	O
several	O
languages	O
.	O
</s>
<s>
Meanwhile	O
it	O
has	O
a	O
WebUI	O
and	O
the	O
official	O
graphical	B-Application
user	I-Application
interface	I-Application
project	O
for	O
Radare2	B-Language
is	O
called	O
Iaito	O
.	O
</s>
<s>
Radare2	B-Language
is	O
able	O
to	O
assemble	O
and	O
disassemble	O
a	O
lot	O
of	O
software	O
programs	O
,	O
mainly	O
executables	B-Application
,	O
but	O
it	O
can	O
also	O
perform	O
binary	B-Application
diffing	I-Application
with	O
graphs	O
,	O
extract	O
information	O
like	O
relocations	B-Library
symbols	O
,	O
and	O
various	O
other	O
types	O
of	O
data	O
.	O
</s>
<s>
Internally	O
,	O
it	O
uses	O
a	O
NoSQL	B-General_Concept
database	O
named	O
to	O
keep	O
track	O
of	O
analysis	O
information	O
that	O
can	O
be	O
inferred	O
by	O
radare2	B-Language
or	O
manually	O
added	O
by	O
the	O
user	O
.	O
</s>
<s>
Radare2	B-Language
has	O
a	O
built-in	O
debugger	B-Application
that	O
is	O
lower-level	O
than	O
GDB	B-Language
.	O
</s>
<s>
It	O
can	O
also	O
interface	O
with	O
GDB	B-Language
and	O
WineDBG	B-Application
to	O
debug	O
Windows	O
binaries	O
on	O
other	O
systems	O
.	O
</s>
<s>
In	O
addition	O
,	O
it	O
can	O
also	O
be	O
used	O
as	O
a	O
kernel	O
debugger	B-Application
with	O
VMWare	B-Operating_System
.	O
</s>
<s>
Since	O
it	O
features	O
a	O
disassembler	O
and	O
a	O
low-level	O
debugger	B-Application
,	O
radare2	B-Language
can	O
be	O
useful	O
to	O
developers	O
of	O
exploits	O
.	O
</s>
<s>
Because	O
of	O
the	O
software	O
's	O
flexibility	O
and	O
support	O
for	O
many	O
file	O
formats	O
,	O
it	O
is	O
often	O
used	O
by	O
capture	B-Application
the	I-Application
flag	I-Application
teams	O
and	O
other	O
security-oriented	O
personnel	O
.	O
</s>
<s>
Radare2	B-Language
can	O
also	O
assist	O
in	O
creating	O
shellcodes	O
with	O
its	O
'	O
ragg2	O
 '	O
tool	O
,	O
similar	O
to	O
metasploit	B-Application
.	O
</s>
<s>
Project	O
has	O
been	O
developed	O
as	O
the	O
first	O
dedicated	O
graphical	B-Application
user	I-Application
interface	I-Application
(	O
GUI	B-Application
)	O
for	O
radare2	B-Language
;	O
it	O
's	O
been	O
forked	O
by	O
as	O
secondly	O
developed	O
graphical	B-Application
user	I-Application
interface	I-Application
(	O
GUI	B-Application
)	O
for	O
radare2	B-Language
.	O
</s>
<s>
When	O
the	O
Cutter	O
project	O
was	O
separated	O
from	O
radare2	B-Language
project	O
at	O
the	O
end	O
of	O
2020	O
,	O
was	O
re-developed	O
to	O
be	O
the	O
current	O
official	O
radare2	B-Language
graphical	B-Application
user	I-Application
interface	I-Application
(	O
GUI	B-Application
)	O
maintained	O
by	O
radare2	B-Language
project	O
members	O
.	O
</s>
<s>
File	B-Application
system	I-Application
like	O
the	O
ext	B-Application
family	O
,	O
ReiserFS	B-Application
,	O
HFS+	B-Application
,	O
NTFS	B-Application
,	O
FAT	B-Application
,	O
...	O
</s>
