OSfooler-ng-openwrt 1.1

OSfooler-ng prevents remote OS active/passive fingerprinting by tools like nmap or p0f. This fork based on change of Python nfqueue (NetfilterQueue) version from 0.5 to 0.8.1 for the sake of run the OSfooler-ng on different distros, not just deb-based.

OSfooler-NG

Synopsis

Check original repo for info and stuff. You may also be interested of the OSfooler-ng author's speech at DEF CON 27 (running at Aug 8-11 2019)

This fork based on change of Python's nfqueue (NetfilterQueue) version from 0.5 to 0.8.1 for the sake of run the OSfooler-ng on different distros, not just deb-based.

You may help hugely by trying this on different distros. By now it's been tested fine on Arch and CentOS7.

Install

To get this version, just use git:

$ git clone https://github.com/moonbaseDelta/OSfooler-ng.git

You need to install python NetfilterQueue (v0.8.1 or more) linux package. Download from PyPi:

$ wget https://files.pythonhosted.org/packages/39/c4/8f73f70442aa4094b3c37876c96cddad2c3e74c058f6cd9cb017d37ffac0/NetfilterQueue-0.8.1.tar.gz
$ tar -xzf NetfilterQueue-0.8.1.tar.gz
$ cd NetfilterQueue-0.8.1
$ sudo python setup.py install

or try:

$ pip install NetfilterQueue

Install OSfooler-ng in the standard way:

$ sudo python setup.py install

Known issues

No such device IO error (error code 19):

• By default program uses 'eth0' interface that may not be even exist on your machine
• Find your main TCP/IP interface (you can find it by 'ip a' command)
• Run OSfooler-ng commands with:

$ <osfooler command> -i 'YOURINTERFACE'

Usage

Active Fingerprinting: nmap

To get the full list of OS to emulate, just use the flag '-n':

$ osfooler-ng -n
 [+] Please, select nmap OS to emulate
    + "2N Helios IP VoIP doorbell"
    + "2Wire BT2700HG-V ADSL modem"
    + "2Wire 1701HG wireless ADSL modem"
    [...]
    + "ZyXEL Prestige 660HW-61 ADSL router (ZyNOS 3.40)"
    + "ZyXEL Prestige 660HW-D1 wireless ADSL router"
    + "ZyXEL ZyWALL 2 Plus firewall"

To emulate an specific OS, just use the flag '-o' with the OS you want to emulate:

$ osfooler-ng -m "Sony Ericsson W705 or W715 Walkman mobile phone"
 [+] Mutating to nmap:
      Fingerprint Sony Ericsson W705 or W715 Walkman mobile phone
      Class Sony Ericsson | embedded || phone
      CPE cpe:/h:sonyericsson:w705
      CPE cpe:/h:sonyericsson:w715
      SEQ(CI=RD%II=I)
      OPS(R=N)
      WIN(R=N)
      ECN(R=N)
      T1(R=N)
      T2(R=Y%DF=N%T=3B-45%TG=40%W=0%S=Z%A=S%F=AR%O=%RD=0%Q=)
      T3(R=N)
      T4(R=Y%DF=N%T=3B-45%TG=40%W=0%S=A%A=Z%F=R%O=%RD=0%Q=)
      T5(R=Y%DF=N%T=3B-45%TG=40%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=)
      T6(R=Y%DF=N%T=3B-45%TG=40%W=0%S=A%A=Z%F=R%O=%RD=0%Q=)
      T7(R=Y%DF=N%T=3B-45%TG=40%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=)
      U1(DF=N%T=3B-45%TG=40%IPL=164%UN=0%RIPL=G%RID=G%RIPCK=G%RUCK=G%RUD=G)
      IE(DFI=N%T=3B-45%TG=40%CD=S)
 [+] Activating queues
      [->] Process-1: nmap packet processor

Passive Fingerprinting: p0f v2

To get the full list of OS to emulate, just use the flag '-l':

$ osfooler-ng -p 
Please, select p0f OS Genre and Details
        OS Genre="AIX" Details="4.3"
        OS Genre="AIX" Details="4.3.2 and earlier"
        OS Genre="AIX" Details="4.3.3-5.2 (1)"
        [...]
        OS Genre="-*NMAP" Details="OS detection probe w/flags (3)"
        OS Genre="-*NMAP" Details="OS detection probe w/flags (4)"
        OS Genre="-*NAST" Details="syn scan"

To emulate any p0f OS, just use the flag '-o' with the OS Genre. This will choose the main OS and custom version will be randomly loaded when a SYN packet is detected. For example:

$ osfooler-ng -o "PalmOS"
 [+] Mutating to p0f:
      WWW:S9|TTL:255|D:0|SS:44|OOO:M536|QQ:.|OS:PalmOS|DETAILS:Tungsten T3/C
      WWW:S5|TTL:255|D:0|SS:44|OOO:M536|QQ:.|OS:PalmOS|DETAILS:3/4
      WWW:S4|TTL:255|D:0|SS:44|OOO:M536|QQ:.|OS:PalmOS|DETAILS:3.5
      WWW:2948|TTL:255|D:0|SS:44|OOO:M536|QQ:.|OS:PalmOS|DETAILS:3.5.3 (Handera)
      WWW:S29|TTL:255|D:0|SS:44|OOO:M536|QQ:.|OS:PalmOS|DETAILS:5.0
      WWW:16384|TTL:255|D:0|SS:44|OOO:M1398|QQ:.|OS:PalmOS|DETAILS:5.2 (Clie)
      WWW:S14|TTL:255|D:0|SS:44|OOO:M1350|QQ:.|OS:PalmOS|DETAILS:5.2.1 (Treo)
      WWW:16384|TTL:255|D:0|SS:44|OOO:M1400|QQ:.|OS:PalmOS|DETAILS:5.2 (Sony)
 [+] Activating queues
      [->] Process-1: p0f packet processor

You can also emulate the full p0f OS, using '-' with the OS Genre and '-d' with custom details:

$ osfooler-ng -o "Windows" -d "XP bare-bone"
 [+] Mutating to p0f:
     WWW:65520|TTL:128|D:1|SS:48|OOO:M*,N,N,S|QQ:.|OS:Windows|DETAILS:XP bare-bone
[+] Activating queues
     [->] Process-1: p0f packet processor

Active and Passive Fingerprinting: nmap & p0f

OSfooler-ng is also capable os emulating both OS to defeat nmap and p0f. Just combine the parameters above:

$ osfooler-ng -m "Microsoft Windows 2000 SP4" -o "Windows" -d "2000 SP4"
 [+] Mutating to nmap:
      Fingerprint Microsoft Windows 2000 SP4
      Class Microsoft | Windows | 2000 | general purpose
      CPE cpe:/o:microsoft:windows_2000::sp4
      SEQ(SP=7C-86%GCD=1-6%ISR=95-9F%TI=I%II=I%SS=O|S%TS=0)
      OPS(O1=NNT11|M5B4NW0NNT00NNS%O2=NNT11|M5B4NW0NNT00NNS%O3=NNT11|M5B4NW0NNT00%O4=NNT11|M5B4NW0NNT00NNS%O5=NNT11|M5B4NW0NNT00NNS%O6=NNT11|M5B4NNT00NNS)
      WIN(W1=FFFF%W2=FFFF%W3=FFFF%W4=FFFF%W5=FFFF%W6=FFFF)
      ECN(R=Y%DF=N%T=7B-85%TG=80%W=0%O=%CC=N%Q=U)
      T1(R=Y%DF=Y%T=7B-85%TG=80%S=O%A=O|S+%F=A|AS%RD=0%Q=|U)
      T2(R=Y%DF=N%T=7B-85%TG=80%W=0%S=Z%A=S%F=AR%O=%RD=0%Q=U)
      T3(R=Y%DF=N%T=7B-85%TG=80%W=0%S=Z%A=O%F=AR%O=%RD=0%Q=U)
      T4(R=Y%DF=N%T=7B-85%TG=80%W=0%S=A%A=O%F=R%O=%RD=0%Q=U)
      T5(R=Y%DF=N%T=7B-85%TG=80%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=U)
      T6(R=Y%DF=N%T=7B-85%TG=80%W=0%S=A%A=O%F=R%O=%RD=0%Q=U)
      T7(R=Y%DF=N%T=7B-85%TG=80%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=U)
      U1(DF=N%T=7B-85%TG=80%IPL=38%UN=0%RIPL=G%RID=G%RIPCK=G%RUCK=G%RUD=G)
      IE(DFI=S%T=7B-85%TG=80%CD=Z)
 [+] Mutating to p0f:
      WWW:40320|TTL:128|D:1|SS:48|OOO:M*,N,N,S|QQ:.|OS:Windows|DETAILS:2000 SP4
 [+] Activating queues
      [->] Process-1: nmap packet processor
      [->] Process-2: p0f packet processor

Searching for Operating Systems

You can search inside nmap/p0f database for a specific OS, instead of getting the whole list. Just use the flag '-s' and enter the keyword you want to search for (case insensitive). You'll get any match found, and if it belongs to nmap or p0f databases:

$ osfooler-ng -s playstation
 [+] Searching databases for: 'playstation'
      [nmap] "Sony Playstation 4 or FreeBSD 10.2-RELEASE"
      [nmap] "Sony PlayStation 2 game console test kit 2.2.1"
      [nmap] "Sony PlayStation 3 game console"
      [nmap] "Sony PlayStation 3 game console test kit"
      [nmap] "Sony PlayStation 2 game console"
      [p0f] OS: "Sony" DETAILS: "Playstation 2 (SOCOM?)"

Update nmap database

Use the flag '-u' to check if there's a new version of nmap's database avaiable and to download it

$ osfooler-ng -u
 [+] Checking nmap database... latest!

Custom flags

There are other interesting flags:

• '-v': Show info about every modified packet
• '-i <interface>': Choose network interface (eth0 by default)
• '-V': Show OSfooler-ng banner and current version installed

Authors

• Jaime Sánchez (@segofensiva)

License

This project is licensed under the The GNU General Public License v3.0 - see the LICENSE.md file for details

Acknowledgments

• https://github.com/segofensiva/OSfooler-ng#acknowledgments