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https://github.com/sc0tfree/netbyte
Netbyte is a Netcat-style tool that facilitates probing proprietary TCP and UDP services. It is lightweight, fully interactive and provides formatted output in both hexadecimal and ASCII.
https://github.com/sc0tfree/netbyte
cli hexadecimal netcat penetration-testing pentesting python
Last synced: 30 days ago
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Netbyte is a Netcat-style tool that facilitates probing proprietary TCP and UDP services. It is lightweight, fully interactive and provides formatted output in both hexadecimal and ASCII.
- Host: GitHub
- URL: https://github.com/sc0tfree/netbyte
- Owner: sc0tfree
- License: mit
- Created: 2017-06-18T22:51:03.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2017-09-25T02:08:44.000Z (about 7 years ago)
- Last Synced: 2024-08-03T17:11:09.065Z (4 months ago)
- Topics: cli, hexadecimal, netcat, penetration-testing, pentesting, python
- Language: Python
- Size: 101 KB
- Stars: 62
- Watchers: 5
- Forks: 12
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Netbyte
[](https://twitter.com/sc0tfree)
Netbyte is a Netcat-style tool that facilitates probing proprietary TCP and UDP services.
It is lightweight, fully interactive and provides formatted output in both hexadecimal and ASCII.
## Why
When testing proprietary or custom-written services on pentests, I’ve frequently been disappointed while trying to reverse engineer
these protocols.
In the past, this has been done using netcat with wireshark and/or hexdump.
However, due to truncation issues with using hexdump (i.e.: `nc domain.com 1234 | hexdump -C`)
and wireshark’s tedious process, I decided to create Netbyte as quick and easy alternative when opening unknown ports.
## Install
Clone the git:
```
git clone https://github.com/sc0tfree/netbyte.git
```
Enter the directory:
```
cd netbyte
```
Run setup.py script with 'install':
```
python setup.py install
```
## Usage
```
$ netbyte example.com 12345
������!��'
FF FB 01 FF FB 03 FF FD 21(!) FF FD 27(')
Enter your user id:
0D 0A(\n)
0D 0A(\n)
45(E) 6E(n) 74(t) 65(e) 72(r) 20 79(y) 6F(o) 75(u) 72(r) 20 75(u) 73(s) 65(e) 72(r) 20 69(i) 64(d) 3A(:) 20 07
admin
user password:
61(a) 64(d) 6D(m) 69(i) 6E(n) 0D 0A(\n)
75(u) 73(s) 65(e) 72(r) 20 70(p) 61(a) 73(s) 73(s) 77(w) 6F(o) 72(r) 64(d) 3A(:) 20
admin
Invalid user or password
Connection closed
```
You can also pipe input into netbyte:
```
$ echo "GET /" | netbyte test.com 80
302 Found
302 Found
nginx/1.11.13
3C(<) 68(h) 74(t) 6D(m) 6C(l) 3E(>) 0D 0A(\n)
3C(<) 68(h) 65(e) 61(a) 64(d) 3E(>) 3C(<) 74(t) 69(i) 74(t) 6C(l) 65(e) 3E(>) 33(3) 30(0) 32(2) 20 46(F) 6F(o) 75(u) 6E(n) 64(d) 3C(<) 2F(/) 74(t) 69(i) 74(t) 6C(l) 65(e) 3E(>) 3C(<) 2F(/) 68(h) 65(e) 61(a) 64(d) 3E(>) 0D 0A(\n)
3C(<) 62(b) 6F(o) 64(d) 79(y) 20 62(b) 67(g) 63(c) 6F(o) 6C(l) 6F(o) 72(r) 3D(=) 22 77(w) 68(h) 69(i) 74(t) 65(e) 22 3E(>) 0D 0A(\n)
3C(<) 63(c) 65(e) 6E(n) 74(t) 65(e) 72(r) 3E(>) 3C(<) 68(h) 31(1) 3E(>) 33(3) 30(0) 32(2) 20 46(F) 6F(o) 75(u) 6E(n) 64(d) 3C(<) 2F(/) 68(h) 31(1) 3E(>) 3C(<) 2F(/) 63(c) 65(e) 6E(n) 74(t) 65(e) 72(r) 3E(>) 0D 0A(\n)
3C(<) 68(h) 72(r) 3E(>) 3C(<) 63(c) 65(e) 6E(n) 74(t) 65(e) 72(r) 3E(>) 6E(n) 67(g) 69(i) 6E(n) 78(x) 2F(/) 31(1) 2E 31(1) 31(1) 2E 31(1) 33(3) 3C(<) 2F(/) 63(c) 65(e) 6E(n) 74(t) 65(e) 72(r) 3E(>) 0D 0A(\n)
3C(<) 2F(/) 62(b) 6F(o) 64(d) 79(y) 3E(>) 0D 0A(\n)
3C(<) 2F(/) 68(h) 74(t) 6D(m) 6C(l) 3E(>) 0D 0A(\n)
Connection closed
```
## Test Server
I have included a test server to better view the functionality of netbyte. The server has two tests:
* Echo Test - echo back a user entered string
* Hex Test - send a random hexadecimal string of user-specified size
To run the test server:
```
$ python testserver.py
```
In another terminal, connect to the test server using netbyte:
```
$ netbyte localhost 12345
```
## Modifying Output Colors
To modify the color scheme, change the functions `print_ascii` and `print_hex` inside the netbyte package.
See the [colorama page](https://pypi.python.org/pypi/colorama) for color options.
## License and Contributions
Netbyte is under the MIT License.
Questions, comments and suggestions are always welcomed!
## Future Work
* Ability to enter input sent as hex
* Listen option to interact with custom-built clients
* Proper unit tests