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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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getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME
getusershell, setusershell, endusershell - get legal user shells SYNOPSIS
#include <unistd.h> char *getusershell(void); void setusershell(void); void endusershell(void); DESCRIPTION
The getusershell() function returns a pointer to a legal user shell as defined by the system manager in the file /etc/shells. If /etc/shells does not exist, the following locations of the standard system shells are used in its place: /bin/bash /bin/csh /bin/jsh /bin/ksh /bin/pfcsh /bin/pfksh /bin/pfsh /bin/sh /bin/tcsh /bin/zsh /sbin/jsh /sbin/pfsh /sbin/sh /usr/bin/bash /usr/bin/csh /usr/bin/jsh /usr/bin/ksh /usr/bin/pfcsh /usr/bin/pfksh /usr/bin/pfsh /usr/bin/sh /usr/bin/tcsh /usr/bin/zsh /usr/xpg4/bin/sh The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells. The setusershell() function rewinds the file or the list. The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells. RETURN VALUES
The getusershell() function returns a null pointer on EOF. BUGS
All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved. SunOS 5.10 30 Aug 2004 getusershell(3C)
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