Netresec is an independent software vendor with focus on the network security field. We specialize in software for network forensics and analysis of network traffic.
Our most well known product is NetworkMiner, which is available in a professional as well as free open source version. We also develop and maintain other software tools, such as CapLoader (for big pcap files) and RawCap (a lightweight sniffer).
We at Netresec additionally maintain a comprehensive list of publicly available pcap files.
NetworkMiner is a Network Forensic Analysis Tool (NFAT) for Windows. NetworkMiner can be used as a passive network sniffer/packet capturing tool in order to detect operating systems, sessions, hostnames, open ports etc. without putting any traffic on the network. NetworkMiner can also parse PCAP files for off-line analysis and to regenerate/reassemble transmitted files and certificates from PCAP files.
CapLoader is a Windows tool designed to handle large amounts of captured network traffic in the tcpdump/libpcap format (PCAP). CapLoader displays the contents of opened PCAP files as a list of TCP and UDP flows. Users can select the flows of interest and quickly filter out those packets from the loaded PCAP files. Sending the selected flows/packets to a packet analyzer tool like Wireshark or NetworkMiner is then just a mouse click away.
PolarProxy is a transparent SSL/TLS proxy created for incident responders and malware researchers. PolarProxy is primarily designed to intercept and decrypt TLS encrypted traffic from malware that is run in a controlled environment, such as a sandbox. PolarProxy decrypts and re-encrypts TLS traffic, while also saving the decrypted traffic in a PCAP file.
Additional software from Netresec can be found on our products page.
PolarProxy in Podman
Podman is a daemonless Linux container engine, which can be used as a more secure alternative to Docker. This blog post demonstrates how to run PolarProxy in a rootless container using Podman. If you still prefer to run PolarProxy in Docker, then please read our blog post 'PolarProxy in Docker' inst[...]
Honeypot Network Forensics
NCC Group recently released a 500 MB PCAP file containing three months of honeypot web traffic data related to the F5 remote code execution vulnerability CVE-2020-5902. In a blog post the NCC Group say that their objective is 'to enable all threat intelligence researchers to gain further understandi[...]
PolarProxy in Docker
Our transparent TLS proxy PolarProxy is gaining lots of popularity due to how effective it is at generating decrypted PCAP files in combination with how easy it is to deploy. In this blog post we will show how to run PolarProxy in Docker. Installation Instructions Create a Dockerfile with the follow[...]
NetworkMiner 2.6 Released
We are happy to announce the release of NetworkMiner 2.6 today! The network forensic tool is now even better at extracting emails, password hashes, FTP transfers and artifacts from HTTP and HTTP/2 traffic than before. Some of the major improvements in this new release are related to extraction and p[...]