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Linux
(@vicowara)
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n
oa.k.a. vicowara
nHP: http://vicowara.github.io/
n: http://sugawarayusuke.hatenablog.com/
nSNS
2
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n06'32# "
o06+* ≒ 06'32
n(17.3$7
n,/5&4-&
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n,#(%/6&30
! 124
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n/6&30"
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$ ./a.out
Hello, world!
5
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&)#"
bash
% (
$!'"
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n3DA
o1D3DA%)
2D:A ,
API* &+( ()
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! execve
n Linux 0'(7 ()ELF
n ELF2.-18*632.-
,)+592.- 3#$
e_entry49/
.interp,)+59
"
&%$
8
ELF
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n "( 2I7BIJ4CL=<
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oprintf* scanf* ( $3/libc)
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n "( 2I7BIJ-
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vicco@localhost ~/Scripts/hello $ ldd hello
linux-vdso.so.1 (0x00007ffdea521000)
libc.so.6 => /lib64/libc.so.6 (0x00007f8fd35df000)
/lib64/ld-linux-x86-64.so.2 (0x00007f8fd398e000)
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.dynamic.dynstr=9;HM
1
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n$* ('
nELF%"!e_entry
n_start
+#),& +#
o/usr/lib64/crt1.o ()+ )
o_start() → __libc_start_main() →
main()
+#),& +# 11
vicco@localhost ~/Scripts/hello $ readelf -h hello|grep Entry
Entry point address: 0x4003e0
vicco@localhost ~/Scripts/hello $ objdump -d hello|grep 4003e0
00000000004003e0 <_start>:
4003e0: 31 ed xor %ebp,%ebp
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'1 12
0 ('1 ) 13! '1 .* Linux 3%0
execve
+,/
13!
.&./
+,/)"'
2#/3(2#
-3 3.2$ 3%0
'1 .*
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n 0xAX: How the Linux kernel runs a program · Linux Inside, available
from (accessed 2018-03-03)
n M. Jones: Linux E4BEFK/ $, available from
(accessed 2018-03-03)
n Yabusame: >E4@K,/ !%# CH98 /8:<7,
available from
(accessed 2018-03-03)
n *)
o JohnR. L.: Linkers & Loaders, Morgan Kaufmann (1999).
("): Linker L Loaders, 5KD (2001)
o
:FI6JHK; &'=7?<7―
A34G2+1-0.(/ , CQ (2010)
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