Escari Posted April 28, 2016 Share Posted April 28, 2016 Hi everyone!New user here - I'm currently looking for some kind of resource for the Libnet library. I've been slowly going through the Hacking; ... Exploitation by J. Erikson and the most interesting aspect so far has been packet crafting with libnet. Problem 1 is that the library used in the book is libnet1.0, which also comes loaded onto the linux live cd (long, long lost). However the up-to-date version is libnet1.4.That wouldn't be so bad - I've been converting some of the simpler programs to the newer libnet version; managed to get an arpspoof and a targeted TCP flood working by examining the libnet files but they've changed a LOT of stuff; new handle types, new memory management, new ptag(s) for the packets and lots of new functions - it feels like there's loads of stuff I can't do yet without a better understanding of the library and how it works.Problem 2 is that I can't find any good resources on using libnet since it updated (which, from what I can gather was about 2007...). There's a couple of old sites with advice on old libnet but after hours of googling literally the only thing I could find written in v1.4 was a single arpspoof program and about 500 words about the code.If anyone has any good up-to-date resources for libnet I'd be eternally grateful.Also curious - packet-crafting seems really interesting and pretty cool - yet I'm not seeing a much written about it in general which surprised me; do people just use GUI packet-crafters these days? Or are all the interesting exploits more application layer these days?Thanks for your help!Escari Quote Link to comment Share on other sites More sharing options...
cooper Posted April 28, 2016 Share Posted April 28, 2016 Crafting a packet from a GUI sounds really, really icky. It's the proverbial swatting a fly with a nuke. You should use libpcap - it's what makes TCPDump amazing. This describes how to sniff with it. To send, you use pcap_sendpacket and its associated methods. Quote Link to comment Share on other sites More sharing options...
Escari Posted April 29, 2016 Author Share Posted April 29, 2016 Hey, thanks very much. I'm already using pcap for sniffing - I didn't know you could use it to build packets though. That's nice, seems much easier to work with than libnet! Quote Link to comment Share on other sites More sharing options...
i8igmac Posted May 1, 2016 Share Posted May 1, 2016 my brain recalls years ago I was crafting all kinds of packets for ddos style attacks using hping3... I'm sure any packet can be crafted with hping just takes proper research and a understanding of the 3 way handshake Quote Link to comment Share on other sites More sharing options...
i8igmac Posted May 1, 2016 Share Posted May 1, 2016 Disregard my last post Quote Link to comment Share on other sites More sharing options...
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