https://github.com/Malayke/nofingerprint

remove common pentest tools fingerprint
https://github.com/Malayke/nofingerprint

bypass fingerprint nmap

Last synced: 21 days ago
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remove common pentest tools fingerprint

• Host: GitHub
• URL: https://github.com/Malayke/nofingerprint
• Owner: Malayke
• Created: 2020-04-28T08:43:14.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2020-06-05T02:00:33.000Z (over 4 years ago)
• Last Synced: 2024-08-05T17:42:22.365Z (4 months ago)
• Topics: bypass, fingerprint, nmap
• Size: 21.5 KB
• Stars: 4
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# nofingerprint

remove common pentest tools fingerprint

Inspired by [al0ne/Nmap_Bypass_IDS](https://github.com/al0ne/Nmap_Bypass_IDS), I listed some nmap scaner detactable fingerprint

## Remove Nmap Fingerprint

### [nselib/http.lua](https://github.com/nmap/nmap/blob/master/nselib/http.lua#L159)

```c

USER_AGENT = stdnse.get_script_args('http.useragent') or "Mozilla/5.0 (compatible; Nmap Scripting Engine; https://nmap.org/book/nse.html)"

```

change nmap user-agent to other common user-agent

### [tcpip.cc](https://github.com/nmap/nmap/blob/master/tcpip.cc#L733)

```c

  if (window)

    tcp->th_win = htons(window);

  else

    tcp->th_win = htons(1024); /* Who cares */

```

nmap tcp scan defualt windows size is `1024`, it can be easyly detacted by IDS/IPS device

so it should be change to other value 

### [nselib/rdp.lua](https://github.com/nmap/nmap/blob/master/nselib/rdp.lua#L211)

```lua

local cookie = "mstshash=nmap"

```

change `nmap` to other value

### osscan2.cc:2218

```C

static u8 patternbyte = 0x43; /* character 'C' */

```

change `0x43` to other hex string

### nmap-service-probes:13473

```

mstshash=nmap

```

change `nmap` to other value

### Replace all "nmap" string in `nmap-service-probes` file

```

OPTIONS sip:nm

```

replace SIP method to other, like `INVIKE`, and replace `nm` to other string

[SIP request messages](https://help.fortinet.com/fos50hlp/54/Content/FortiOS/fortigate-voip-guide-52/SIP-mes-media-pro-request.htm)

### nselib/http.lua:2601

```lua

-- The URLs used to check 404s

local URL_404_1 = '/nmaplowercheck' .. os.time(os.date('*t'))

local URL_404_2 = '/NmapUpperCheck' .. os.time(os.date('*t'))

local URL_404_3 = '/Nmap/folder/check' .. os.time(os.date('*t'))

```

change `nmap` to other string

### Global replace "Nmap NSE" string

### change default behavior when using nmap

1. If no host discovery options are given, Nmap sends an ICMP echo request, a TCP SYN packet to port 443, a TCP ACK packet to port 80, and an ICMP timestamp request.

so can set `-PS22,135,445` flag to this behavior

## nmap compile command

```

./configure --without-zenmap --without-nmap-update --with-libssh2=included --with-localdirs --with-libpcre=included --with-libpcre=included --prefix=/Users/xxx/bin/nmap --with-openssl=/usr/local/Cellar/[email protected]/1.1.1d

```