3.6 KiB
Internet Relay Chat Probe (IRCP)
A robust information gathering tool for large scale reconnaissance on Internet Relay Chat servers, made for future usage with internetrelaychat.org for public statistics on the protocol.
Meant to be used in combination with masscan checking 0.0.0.0/0 (the entire IPv4 range) for port 6667.
The idea is to create a proof-of-concept documenting how large-scale information gathering on the IRC protocol can be malicious & invasive to privacy.
Order of Operations
First, an attempt to connect using SSL/TLS on port 6697 is made, which if it fails, will fall back to a standard connection on port 6667.
Once connected, server information is gathered from LUSERS, VERSION, LINKS, MAP, ADMIN, MOTD, LIST, replies.
An attempt to register a nickname is then made by trying to contact NickServ.
Next, every channel is joined with a WHO command sent & every new nick found gets a WHOIS.
Collected Information
All of the raw data from a server is logged & stored. The categories below are stored seperately & hilight the key information we are after:
Server Information
| Numeric | Title |
|---|---|
| 001 | RPL_WELCOME |
| 002 | RPL_YOURHOST |
| 003 | RPL_CREATED |
| 004 | RPL_MYINFO |
| 005 | RPL_ISUPPORT |
| 372 | RPL_MOTD |
| 351 | RPL_VERSION |
| 364 | RPL_LINKS |
| 006 | RPL_MAP |
| 018 | RPL_MAPUSERS |
| 257 | RPL_ADMINLOC1 |
| 258 | RPL_ADMINLOC2 |
| 259 | RPL_ADMINEMAIL |
Statistics Information (LUSERS)
| Numeric | Title |
|---|---|
| 250 | RPL_STATSCONN |
| 251 | RPL_LUSERCLIENT |
| 252 | RPL_LUSEROP |
| 254 | RPL_LUSERCHANNELS |
| 255 | RPL_LUSERME |
| 265 | RPL_LOCALUSERS |
| 266 | RPL_GLOBALUSERS |
Channel Information
| Numeric | Title |
|---|---|
| 332 | RPL_TOPIC |
| 353 | RPL_NAMREPLY |
| 322 | RPL_LIST |
User Information (WHOIS/WHO)
| Numeric | Title |
|---|---|
| 311 | RPL_WHOISUSER |
| 307 | RPL_WHOISREGNICK |
| 312 | RPL_WHOISSERVER |
| 671 | RPL_WHOISSECURE |
| 319 | RPL_WHOISCHANNELS |
| 320 | RPL_WHOISSPECIAL |
| 276 | RPL_WHOISCERTFP |
| 330 | RPL_WHOISACCOUNT |
| 338 | RPL_WHOISACTUALLY |
| 352 | RPL_WHOREPLY |
Bad Numerics
| Numeric | Title |
|---|---|
| 470 | ERR_LINKCHANNEL |
| 471 | ERR_CHANNELISFULL |
| 473 | ERR_INVITEONLYCHAN |
| 474 | ERR_BANNEDFROMCHAN |
| 475 | ERR_BADCHANNELKEY |
| 477 | ERR_NEEDREGGEDNICK |
| 489 | ERR_SECUREONLYCHAN |
| 519 | ERR_TOOMANYUSERS |
| 520 | ERR_OPERONLY |
| 464 | ERR_PASSWDMISMATCH |
| 465 | ERR_YOUREBANNEDCREEP |
| 466 | ERR_YOUWILLBEBANNED |
| 421 | ERR_UNKNOWNCOMMAND |
Todo
- Capture
IRCOPS&STATS pcommand outputs - Built in identd
- Checking for IPv6 availability (SSL= in 005 responses may help verify IPv6)
- Random nick changes for stealth on larger networks
- Support for IRC servers using old versions of SSL