12 Comments

• 

  Post Author

  dotaenjoyer322

  Posted June 2, 2025 at 3:27 pm

  Cool! Will definitely take a look.

  Curios what made you choose Go for this project? I am looking into building a toy version of Burp with either Rust/Go but still undecided.

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• 

  Post Author

  jasonthorsness

  Posted June 2, 2025 at 3:39 pm

  Go is great for tools like this. I've built MITM protocol analyzers a few times. Being able to completely customize the handling, analysis, and break in in the debugger can make it more useful than a super-capable but general-purpose tool like Wireshark.

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• 

  Post Author

  colesantiago

  Posted June 2, 2025 at 3:57 pm

  This looks nice, perhaps name your project babyshark?

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  Post Author

  kinduff

  Posted June 2, 2025 at 4:57 pm

  [flagged]

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• 

  Post Author

  Hikikomori

  Posted June 2, 2025 at 4:58 pm

  Cool! I did something similar when I wanted to learn Go, but did my own parsers instead of using gopacket, I would recommend doing that yourself if you want to learn more low level stuff.

  How I parsed IP for example:

    type Addr [4]uint8
    
    func (ip Addr) String() string {
     return fmt.Sprintf("%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3])
    }
    
    type Hdr struct {
     Version    uint8
     IHL        uint8
     DSCP       uint8
     ECN        uint8
     Length     uint16
     Id         uint16
     Flags      uint8
     Fragoffset uint16
     TTL        uint8
     Protocol   uint8
     Checksum   uint16
     Src        Addr
     Dst        Addr
    }
    
    func (hdr *Hdr) Parse(d []byte) error {
     hdr.Version = uint8(d[0] >> 4)
     hdr.IHL = uint8(d[0] & 0x0f)
     hdr.DSCP = uint8(d[1] >> 6)
     hdr.ECN = uint8(d[1] & 0x03)
     hdr.Length = uint16(binary.BigEndian.Uint16(d[2:4]))
     hdr.Id = uint16(binary.BigEndian.Uint16(d[4:6]))
     hdr.Flags = uint8(d[6] >> 5)
     hdr.Fragoffset = uint16(binary.BigEndian.Uint16(d[6:8])) & 0x1fff
     hdr.TTL = d[8]
     hdr.Protocol = d[9]
     hdr.Checksum = uint16(binary.BigEndian.Uint16(d[10:12]))
     hdr.Src = Addr{d[12], d[13], d[14], d[15]}
     hdr.Dst = Addr{d[16], d[17], d[18], d[19]}
    
     if hdr.IHL > 5 {
      fmt.Println("extra options detected") // TODO: support for extra options
     }
     return nil
    }

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• 

  Post Author

  thenthenthen

  Posted June 2, 2025 at 5:00 pm

  Screenshots please!

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• 

  Post Author

  dang

  Posted June 2, 2025 at 5:17 pm

  [stub for offtopicness]

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  Post Author

  Cockbrand

  Posted June 2, 2025 at 5:19 pm

  This reads a bit like Linus' first annoucement, see https://en.wikipedia.org/wiki/History_of_Linux#:~:text=Hello… – godspeed to you, and let's see when you will take over :)

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  Post Author

  worldsayshi

  Posted June 2, 2025 at 5:40 pm

  Cool! I've sometimes gotten the impression that wireshark-lite is an unfulfilled niche so this is nice.

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• 

  Post Author

  thegoodduck

  Posted June 2, 2025 at 7:02 pm

  https://github.com/thegoodduck/netsour

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• 

  Post Author

  woleium

  Posted June 2, 2025 at 7:04 pm

  watch out for the other vanta (who do SOC2 stuff) they are keen to protect their name.

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• 

  Post Author

  op00to

  Posted June 2, 2025 at 7:25 pm

  > This project is not just code — it's a response. Amid political pressure, some universities like Harvard, MIT, and CMU stood up for international students.

  > I’m just an ordinary undergraduate with no resources or background. This is my way of responding — not by petition, but through code. Vanta may be small, but it’s real, and it’s mine.

  This comes off as super ChatGPT-y to me. "X is not y — it's Z! Preamble, passionate statement. Sycophantic statement — list, of, a, few, things, but also this. Summarize statement, but this other thing, and saying the same thing again but in a slightly different way."

  I've given up on ChatGPT because of this style of writing.

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