SinFP is a new approach to OS fingerprinting, which bypasses limitations that nmap has.

Nmap approaches to fingerprinting as shown to be efficient for years. Nowadays, with the omni-presence of stateful filtering devices, PAT/NAT configurations and emerging packet normalization technologies, its approach to OS fingerprinting is becoming to be obsolete.

SinFP uses the aforementioned limitations as a basis for tests to be obsolutely avoided in used frames to identify accurately the remote operating system. That is, it only requires one open TCP port, sends only fully standard TCP packets, and limits the number of tests to 2 or 3 (with only 1 test giving the OS reliably in most cases).

SinFP 2.04 is now available, which for the first time, can now run under Windows ActivePerl.

More info here:

SinFP

SinFP has now more than 130 signatures in its database.

For Windows users, follow these instructions:

This was tested with ActivePerl 5.8.8.819, with PPM v4.0.

  # If you are behind a proxy:
  C:\> set http_proxy=http://username:password@proxy:port

  # Add gomor repository
  C:\> ppm repo add gomor http://www.gomor.org/files/ppm/repo-8xx

  # Disable all other repo, if you have many. Or only ActiveState repo
  # by default
  C:\> ppm repo 1 off
  ...
  C:\> ppm install Net-SinFP

  # Re-enable all other repo
  C:\> ppm repo 1 on
  ...

  Launch it:
  C:\> perl C:\perl\site\bin\sinfp.pl

If you have error messages about failing to load some .dll, go to www.microsoft.com. Then, in the search field, type in vcredist_x86.exe, download it and install it.

OS Fingerprinting is an important part of any penetration test or hack as it allows you focus your efforts a lot more effeciently when point testing, rather than throwing everything at a machine like a script kiddy would. So let’s introduce a new option, other than p0f and xprobe2.

SinFP uses the aforementioned limitations as a basis for tests to be obsolutely avoided in used frames to identify accurately the remote operating system. That is, it only requires one open TCP port, sends only fully standard TCP packets, and limits the number of tests to 2 or 3 (with only 1 test giving the OS reliably in most cases).

New for 2.00:

• complete rewrite
• sinfp.db completely reworked
• new tests based on comparison between probe and response (TCP seq/ack comparison, IP ID value comparison)
• new matching algorithm, works like a search engine (a problem of finding intersection, by applying a deformation mask on keywords) much more efficient than in 1.xx branch
• possibility to manually pass a matching mask to change at will the matching algorithm
• passive fingerprinting much more acurate thanks to new matching algorithm
• possibility to launch P1P2P3 probes, or only P1P2 probes, or only P2 probe
• match IPv6 signatures against IPv4 ones
• API changes, not compatible with 1.xx version anymore
• DB schema changes, not compatible with 1.xx version anymore
• many bugfixes

To read more you can check out the SinFP Homepage.

You can download SinFP directly here.

OS Fingerprinting is an important part of any penetration test or hack as it allows you focus your efforts a lot more effeciently when point testing, rather than throwing everything at a machine like a script kiddy would. So let’s introduce a new option, other than p0f and xprobe2.

SinFP is a new approach to OS fingerprinting, which bypasses limitations that nmap has.

Nmap approaches to fingerprinting as shown to be efficient for years. Nowadays, with the omni-presence of stateful filtering devices, PAT/NAT configurations and emerging packet normalization, its approach to OS fingerprinting is becoming to be obsolete.

SinFP uses the aforementioned limitations as a basis for tests to be obsolutely avoided in used frames to identify accurately the remote operating system. That is, it only requires one open TCP port, sends only fully standard TCP packets, and limits the number of tests to 2 or 3 (with
only 1 test giving the OS reliably in most cases).

Features list:

• full OS fingerprinting suite, built as a Perl module
• active fingerprinting
• passive fingerprinting (with signature matching made against active ones)
• works the same over IPv4 and IPv6 (yes, IPv6 fingerprinting)
• online mode
• offline mode (especially useful when you have a pcap file)
• heuristic matching algorithm to avoid the need to write new signature for a target stack which has some TCP option deactivated, or changed window size

To read more you can check out the SinFP Homepage.

You can download SinFP directly here.