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Files from fryxar

Email addressfryxar at yahoo.com.ar
First Active2002-01-31
Last Active2006-12-06
snort-covert.txt
Posted Dec 6, 2006
Authored by fryxar

Snort patch based on the "tcpstatflow" tool and written to be compiled with snort-2.6.1.1 using the stream4 preprocessor. It is designed to detect traffic that is not HTTP / HTTPS / FTP / SMTP, with a reasonable margin of error.

tags | tool, web, sniffer
SHA-256 | 3e7d1c6ba3cd8817eff4ec346d0ef9b08d438b4e3d0085d7760509a1fd878e23
dnsPoison.cpp.txt
Posted Jun 18, 2004
Authored by fryxar

Symantec Enterprise Firewall dnsd proxy, versions 8 and later, is vulnerable to cache poisoning attacks when acting as a caching nameserver. Full proof of concept exploit included.

tags | exploit, proof of concept
SHA-256 | cb84018e4595e260c546cc412ec384eecb358019a95b682a3b76aa4857dc9956
frag.c
Posted Nov 21, 2003
Authored by fryxar | Site geocities.com

Fragmented ICMP packet generator.

systems | unix
SHA-256 | ff8302c76379341492e7d4b5c00d34c04aaceee1802459aaf36d4bd83c34b98f
mod_icmp.c
Posted Nov 21, 2003
Authored by fryxar | Site geocities.com

This linux kernel module acts like an icmp proxy for echo/echo-reply packets at kernel level, preventing icmp tunnels through firewalls or directly to the server it is installed on.

tags | kernel
systems | linux
SHA-256 | 9fad32f633cbf5845c1c9aa19434551345fd747ac16e91b836ef8dfa81ef6435
tunnelshell_2.3.tgz
Posted Nov 21, 2003
Authored by fryxar | Site geocities.com

Tunnelshell is a client/server program written in C for Linux users that tunnels a shell using various methods which can bypass firewalls, such as fragmented packets, tcp ACK packets, UDP, ICMP, and raw IP packets (ipsec).

tags | tool, shell, udp, tcp, rootkit
systems | linux, unix
SHA-256 | 11113a593b4f526f8fca20dd243ea7d92507104f9d79654f598013a116da4886
tcpstatflow_v1.1.tgz
Posted Nov 21, 2003
Authored by fryxar | Site geocities.com

TCPStatFlow is a tool for network administrators which detects covert network tunnels running on ports which are accepted by most outbound firewalls by sniffing the network and measuring the symmetry of the data sent. HTTP / HTTPS / FTP / SMTP / POP3 protocols send much more data one direction than the other, and if a ssh server is set up on these ports, this tool will detect it by noticing that the amounts of data sent don't look like the protocol which is supposed to run on that port.

tags | tool, web, protocol, intrusion detection
systems | unix
SHA-256 | edb152cf1f06f1962ff42720fbff6cfbd9daa4d1d85ea1d53115ce88c1b4b64d
tunnelshell_v1.tgz
Posted Jan 31, 2002
Authored by fryxar

Tunnelshell is a client-server backdoor which uses fragmented packets to traverse firewalls. Written in C, tested on Linux.

tags | tool, rootkit
systems | linux, unix
SHA-256 | cad32eeada78f1ea9cbd18a6eec29d4d5a74e7a4359cc941b571364ca2498d29
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