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Full Discussion: Alternative for chattr
Special Forums Cybersecurity Alternative for chattr Post 303038163 by nimafire on Tuesday 27th of August 2019 10:29:42 AM
Old 08-27-2019
mm awsome method i havent hear abut it
and a question regard your method,
most od binery are not writable to add this header:
Code:
cat /usr/bin/curl
#!/bin/sh
/usr/bin/php  /usr/bin/mystuff.php  $@

like check this:

Code:
[root@server bin]# vi /usr/bin/curl
^?ELF^B^A^A^@^@^@^@^@^@^@^@^@^B^@>^@^A^@^@^@é#@^@^@^@^@^@@^@^@^@^@^@^@^@°\^B^@^@^@^@^@^@^@^@^@@^@8^@    ^@@^@^^^@^]^@^F^@^@^@^E^@^@^@@^@^@^@^@^@^@^@@^@@^@^@^@^@^@@^@@^@^@^@^@^@ø^A^@^@^@^@^@^@ø^A^@^@^@^@^@^@^H^@^@^@^@^@^@^@^C^@^@^@^D^@^@^@8^B^@^@^@^@^@^@8^B@^@^@^@^@^@8^B@^@^@^@^@^@^\^@^@^@^@^@^@^@^\^@^@^@^@^@^@^@^A^@^@^@^@^@^@^@^A^@^@^@^E^@^@^@^@^@^@^@^@^@^@^@^@^@@^@^@^@^@^@^@^@@^@^@^@^@^@|D^B^@^@^@^@^@|D^B^@^@^@^@^@^@^@ ^@^@^@^@^@^A^@^@^@^F^@^@^@`M^B^@^@^@^@^@`Mb^@^@^@^@^@`Mb^@^@^@^@^@Ä^E^@^@^@^@^@^@ð^F^@^@^@^@^@^@^@^@ ^@^@^@^@^@^B^@^@^@^F^@^@^@xM^B^@^@^@^@^@xMb^@^@^@^@^@xMb^@^@^@^@^@<80>^B^@^@^@^@^@^@<80>^B^@^@^@^@^@^@^H^@^@^@^@^@^@^@^D^@^@^@^D^@^@^@T^B^@^@^@^@^@^@T^B@^@^@^@^@^@T^B@^@^@^@^@^@D^@^@^@^@^@^@^@D^@^@^@^@^@^@^@^D^@^@^@^@^@^@^@Påtd^D^@^@^@*,^B^@^@^@^@^@*,B^@^@^@^@^@*,B^@^@^@^@^@t^C^@^@^@^@^@^@t^C^@^@^@^@^@^@^D^@^@^@^@^@^@^@Qåtd^F^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^P^@^@^@^@^@^@^@Råtd^D^@^@^@`M^B^@^@^@^@^@`Mb^@^@^@^@^@`Mb^@^@^@^@^@*^B^@^@^@^@^@^@*^B^@^@^@^@^@^@^A^@^@^@^@^@^@^@/lib64/ld-linux-x86-64.so.2^@^D^@^@^@^P^@^@^@^A^@^@^@GNU^@^@^@^@^@^B^@^@^@^F^@^@^@ ^@^@^@^D^@^@^@^T^@^@^@^C^@^@^@GNU^@qp<9a><92>û@<89>:¹û{®x<8c>ûÏ<96>^X<8f>^C^C^

Moderator's Comments:
Mod Comment Use [icode] tags for small command names or small outputs, not for complete codes please.

Last edited by RavinderSingh13; 09-01-2019 at 02:46 PM..
 

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shells(4)							   File Formats 							 shells(4)

NAME
shells - shell database SYNOPSIS
/etc/shells DESCRIPTION
The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser- shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root. A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines which search the file. Blank lines are also ignored. The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/ksh93, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/ksh93, /usr/bin/pfcsh, /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list. Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1). FILES
/etc/shells list of shells on system SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4) SunOS 5.11 20 Nov 2007 shells(4)
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