https://github.com/anfractuosity/timeshifter

Transmissions over time based covert channels across a network. Modifies the time intervals between packets to transmit data.
https://github.com/anfractuosity/timeshifter

covert-channel data-exfiltration exfiltration packet-interval packets steganography timing transmission

Last synced: 5 months ago
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Transmissions over time based covert channels across a network. Modifies the time intervals between packets to transmit data.

Host: GitHub
URL: https://github.com/anfractuosity/timeshifter
Owner: anfractuosity
Created: 2015-05-25T14:56:09.000Z (almost 10 years ago)
Default Branch: master
Last Pushed: 2022-06-26T16:38:32.000Z (almost 3 years ago)
Last Synced: 2024-05-21T06:28:13.913Z (11 months ago)
Topics: covert-channel, data-exfiltration, exfiltration, packet-interval, packets, steganography, timing, transmission
Language: C
Homepage: https://www.anfractuosity.com/projects/timeshifter/
Size: 4.88 KB
Stars: 22
Watchers: 4
Forks: 8
Open Issues: 0
Metadata Files:
- Readme: README.md

README

# timeshifter

Transmissions over time based covert channels across a network

We created a system in order to transmit and receive data by modifying the time intervals between packets.

# setup

On Ubuntu/Debian:

```
sudo apt-get install libnetfilter-queue-dev
```

On Arch:

```
sudo pacman -S libnetfilter_queue
```

# example

Setup iptables rules based on the example_rules_single_computer.sh file provided.

*N.B. once you’ve activated these iptables rules, then packets will not be sent out from the computer until you run the program below.*

Run the transmitter using:

```
echo "helloworld" | ./timeshifter 0 2000 3000
```

Run the reciever using:

```
./timeshifter 1 2000 3000
```

Then ping a remote host, the transmitting packet's intervals will be modulated with your data, the pong replies will then be decoded by the reciever.

Please see https://www.anfractuosity.com/projects/timeshifter/ for additional explaination