剖析Linux病毒原型工作过程和关键环节

grip2@linux:~/tmp/virus> mkdir test
grip2@linux:~/tmp/virus> cp gei foo test
grip2@linux:~/tmp/virus> cd test
grip2@linux:~/tmp/virus/test> ls
gei foo
grip2@linux:~/tmp/virus/test> cp foo h

grip2@linux:~/tmp/virus/test>. /gei h
file size: 8668
e_phoff: 00000034
e_shoff: 00001134
e_phentsize: 00000020
e_phnum: 00000008
e_shentsize: 00000028
e_shnum: 00000025
text segment file offset: 0
[15 sections patched]
grip2@linux:~/tmp/virus/test> ll
total 44
-rwxr-xr-x 1 grip2 users 14211 2004-12-13 07:50 gei
-rwxr-xr-x 1 grip2 users 12764 2004-12-13 07:51 h
-rwxr-xr-x 1 grip2 users 8668 2004-12-13 07:50 foo

grip2@linux:~/tmp/virus/test>. /h
.
..
gei
foo
h
.backup.h
real elf point
grip2@linux:~/tmp/virus/test> ll
total 52
-rwxr-xr-x 1 grip2 users 18307 2004-12-13 07:51 gei
-rwxr-xr-x 1 grip2 users 12764 2004-12-13 07:51 h
-rwxr-xr-x 1 grip2 users 12764 2004-12-13 07:51 foo

grip2@linux:~/tmp/virus/test>. /foo
.
..
gei
Better luck next file
foo
h
Better luck next file
.backup.h
Better luck next file
real elf point

grip2@linux:~/tmp/virus/test> cp. ./foo hh
grip2@linux:~/tmp/virus/test> ll
total 64
-rwxr-xr-x 1 grip2 users 18307 2004-12-13 07:51 gei
-rwxr-xr-x 1 grip2 users 12764 2004-12-13 07:51 h
-rwxr-xr-x 1 grip2 users 8668 2004-12-13 07:51 hh
-rwxr-xr-x 1 grip2 users 12764 2004-12-13 07:51 foo
grip2@linux:~/tmp/virus/test>. /foo
.
..
gei
Better luck next file
foo
h
Better luck next file
.backup.h
Better luck next file
hh
real elf point
grip2@linux:~/tmp/virus/test>