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Code Issues Projects Releases Packages Wiki Activity Actions 3

A bit of code cleanup.

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This commit is contained in:
Vlad Grigorescu 2014-12-27 17:19:43 -06:00
parent 51373b0592
commit 3ed6dd5585
2 changed files with 99 additions and 113 deletions
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51
src/analyzer/protocol/ssh/ssh-analyzer.pac
View file

@ -1,36 +1,49 @@
# Generated by binpac_quickstart
refine flow SSH_Flow += {
function proc_ssh_version(msg: SSH_Version): bool
%{
if ( ssh_client_version && ${msg.is_orig } )
BifEvent::generate_ssh_client_version(connection()->bro_analyzer(), connection()->bro_analyzer()->Conn(), bytestring_to_val(${msg.version}));
{
BifEvent::generate_ssh_client_version(connection()->bro_analyzer(),
connection()->bro_analyzer()->Conn(),
bytestring_to_val(${msg.version}));
}
else if ( ssh_server_version )
BifEvent::generate_ssh_server_version(connection()->bro_analyzer(), connection()->bro_analyzer()->Conn(), bytestring_to_val(${msg.version}));
{
BifEvent::generate_ssh_server_version(connection()->bro_analyzer(),
connection()->bro_analyzer()->Conn(),
bytestring_to_val(${msg.version}));
}
return true;
%}
function proc_ssh_kexinit(msg: SSH_KEXINIT): bool
%{
if ( ssh_server_capabilities )
BifEvent::generate_ssh_server_capabilities(connection()->bro_analyzer(), connection()->bro_analyzer()->Conn(),
bytestring_to_val(${msg.kex_algorithms}), bytestring_to_val(${msg.server_host_key_algorithms}),
bytestring_to_val(${msg.encryption_algorithms_client_to_server}),
bytestring_to_val(${msg.encryption_algorithms_server_to_client}),
bytestring_to_val(${msg.mac_algorithms_client_to_server}),
bytestring_to_val(${msg.mac_algorithms_server_to_client}),
bytestring_to_val(${msg.compression_algorithms_client_to_server}),
bytestring_to_val(${msg.compression_algorithms_server_to_client}),
bytestring_to_val(${msg.languages_client_to_server}),
bytestring_to_val(${msg.languages_server_to_client}));
{
BifEvent::generate_ssh_server_capabilities(connection()->bro_analyzer(),
connection()->bro_analyzer()->Conn(),
bytestring_to_val(${msg.kex_algorithms.val}),
bytestring_to_val(${msg.server_host_key_algorithms.val}),
bytestring_to_val(${msg.encryption_algorithms_client_to_server.val}),
bytestring_to_val(${msg.encryption_algorithms_server_to_client.val}),
bytestring_to_val(${msg.mac_algorithms_client_to_server.val}),
bytestring_to_val(${msg.mac_algorithms_server_to_client.val}),
bytestring_to_val(${msg.compression_algorithms_client_to_server.val}),
bytestring_to_val(${msg.compression_algorithms_server_to_client.val}),
bytestring_to_val(${msg.languages_client_to_server.val}),
bytestring_to_val(${msg.languages_server_to_client.val}));
}
return true;
%}
function proc_ssh_server_host_key(key: bytestring): bool
%{
if ( ssh_server_host_key )
BifEvent::generate_ssh_server_host_key(connection()->bro_analyzer(), connection()->bro_analyzer()->Conn(),
{
BifEvent::generate_ssh_server_host_key(connection()->bro_analyzer(),
connection()->bro_analyzer()->Conn(),
bytestring_to_val(${key}));
}
return true;
%}
@ -40,12 +53,6 @@ refine flow SSH_Flow += {
return true;
%}
function debug(loc: uint8): bool
%{
printf("DEBUG: %d", loc);
return true;
%}
};
refine typeattr SSH_Version += &let {
@ -61,5 +68,5 @@ refine typeattr SSH_DH_GEX_REPLY += &let {
};
refine typeattr SSH_Message += &let {
proc_newkeys: bool = $context.flow.proc_newkeys() &if(msg_type == SSH_MSG_NEWKEYS);
proc_newkeys: bool = $context.flow.proc_newkeys() &if(msg_type == SSH2_MSG_NEWKEYS);
};

145
src/analyzer/protocol/ssh/ssh-protocol.pac
View file

@ -5,37 +5,37 @@ enum state {
};
enum message_id {
SSH_MSG_DISCONNECT = 1,
SSH_MSG_IGNORE = 2,
SSH_MSG_UNIMPLEMENTED = 3,
SSH_MSG_DEBUG = 4,
SSH_MSG_SERVICE_REQUEST = 5,
SSH_MSG_SERVICE_ACCEPT = 6,
SSH_MSG_KEXINIT = 20,
SSH_MSG_NEWKEYS = 21,
SSH_MSG_KEX_DH_GEX_REQUEST_OLD = 30,
SSH_MSG_KEX_DH_GEX_GROUP = 31,
SSH_MSG_KEX_DH_GEX_INIT = 32,
SSH_MSG_KEX_DH_GEX_REPLY = 33,
SSH_MSG_KEX_DH_GEX_REQUEST = 34,
SSH_MSG_USERAUTH_REQUEST = 50,
SSH_MSG_USERAUTH_FAILURE = 51,
SSH_MSG_USERAUTH_SUCCESS = 52,
SSH_MSG_USERAUTH_BANNER = 53,
SSH_MSG_GLOBAL_REQUEST = 80,
SSH_MSG_REQUEST_SUCCESS = 81,
SSH_MSG_REQUEST_FAILURE = 82,
SSH_MSG_CHANNEL_OPEN = 90,
SSH_MSG_CHANNEL_OPEN_CONFIRMATION = 91,
SSH_MSG_CHANNEL_OPEN_FAILURE = 92,
SSH_MSG_CHANNEL_WINDOW_ADJUST = 93,
SSH_MSG_CHANNEL_DATA = 94,
SSH_MSG_CHANNEL_EXTENDED_DATA = 95,
SSH_MSG_CHANNEL_EOF = 96,
SSH_MSG_CHANNEL_CLOSE = 97,
SSH_MSG_CHANNEL_REQUEST = 98,
SSH_MSG_CHANNEL_SUCCESS = 99,
SSH_MSG_CHANNEL_FAILURE = 100,
SSH2_MSG_DISCONNECT = 1,
SSH2_MSG_IGNORE = 2,
SSH2_MSG_UNIMPLEMENTED = 3,
SSH2_MSG_DEBUG = 4,
SSH2_MSG_SERVICE_REQUEST = 5,
SSH2_MSG_SERVICE_ACCEPT = 6,
SSH2_MSG_KEXINIT = 20,
SSH2_MSG_NEWKEYS = 21,
SSH2_MSG_KEX_DH_GEX_REQUEST_OLD = 30,
SSH2_MSG_KEX_DH_GEX_GROUP = 31,
SSH2_MSG_KEX_DH_GEX_INIT = 32,
SSH2_MSG_KEX_DH_GEX_REPLY = 33,
SSH2_MSG_KEX_DH_GEX_REQUEST = 34,
SSH2_MSG_USERAUTH_REQUEST = 50,
SSH2_MSG_USERAUTH_FAILURE = 51,
SSH2_MSG_USERAUTH_SUCCESS = 52,
SSH2_MSG_USERAUTH_BANNER = 53,
SSH2_MSG_GLOBAL_REQUEST = 80,
SSH2_MSG_REQUEST_SUCCESS = 81,
SSH2_MSG_REQUEST_FAILURE = 82,
SSH2_MSG_CHANNEL_OPEN = 90,
SSH2_MSG_CHANNEL_OPEN_CONFIRMATION = 91,
SSH2_MSG_CHANNEL_OPEN_FAILURE = 92,
SSH2_MSG_CHANNEL_WINDOW_ADJUST = 93,
SSH2_MSG_CHANNEL_DATA = 94,
SSH2_MSG_CHANNEL_EXTENDED_DATA = 95,
SSH2_MSG_CHANNEL_EOF = 96,
SSH2_MSG_CHANNEL_CLOSE = 97,
SSH2_MSG_CHANNEL_REQUEST = 98,
SSH2_MSG_CHANNEL_SUCCESS = 99,
SSH2_MSG_CHANNEL_FAILURE = 100,
};
type SSH_PDU(is_orig: bool) = case $context.connection.get_state(is_orig) of {
@ -51,7 +51,7 @@ type SSH_Version(is_orig: bool) = record {
};
type SSH_Key_Exchange_Header(is_orig: bool) = record {
packet_length: uint32;
packet_length : uint32;
padding_length: uint8;
} &length=5;
@ -61,89 +61,68 @@ type SSH_Key_Exchange(is_orig: bool) = record {
pad : bytestring &length=header.padding_length;
};
type SSH_Payload_Header(length: uint32) = record {
type SSH_Payload_Header = record {
message_type: uint8;
} &length=1;
type SSH_Payload(is_orig: bool, packet_length: uint32) = record {
header: SSH_Payload_Header(packet_length);
header: SSH_Payload_Header;
message: SSH_Message(is_orig, header.message_type, packet_length);
};
type SSH_Message(is_orig: bool, msg_type: uint8, packet_length: uint32) = case msg_type of {
SSH_MSG_KEXINIT -> kexinit: SSH_KEXINIT(is_orig, packet_length);
SSH_MSG_KEX_DH_GEX_REQUEST -> dh_gex_request: SSH_DH_GEX_REQUEST(is_orig, packet_length);
SSH_MSG_KEX_DH_GEX_REQUEST_OLD -> dh_gex_request_old: SSH_DH_GEX_REQUEST_OLD(is_orig, packet_length);
SSH_MSG_KEX_DH_GEX_GROUP -> dh_gex_group: SSH_DH_GEX_GROUP(is_orig, packet_length);
SSH_MSG_KEX_DH_GEX_INIT -> dh_gex_init: SSH_DH_GEX_INIT(is_orig, packet_length);
SSH_MSG_KEX_DH_GEX_REPLY -> dh_gex_reply: SSH_DH_GEX_REPLY(is_orig, packet_length);
SSH_MSG_NEWKEYS -> new_keys: bytestring &length=packet_length;
SSH2_MSG_KEXINIT -> kexinit: SSH_KEXINIT(packet_length);
SSH2_MSG_KEX_DH_GEX_REQUEST -> dh_gex_request: SSH_DH_GEX_REQUEST(packet_length);
SSH2_MSG_KEX_DH_GEX_REQUEST_OLD -> dh_gex_request_old: SSH_DH_GEX_REQUEST_OLD(packet_length);
SSH2_MSG_KEX_DH_GEX_GROUP -> dh_gex_group: SSH_DH_GEX_GROUP(packet_length);
SSH2_MSG_KEX_DH_GEX_INIT -> dh_gex_init: SSH_DH_GEX_INIT(packet_length);
SSH2_MSG_KEX_DH_GEX_REPLY -> dh_gex_reply: SSH_DH_GEX_REPLY(packet_length);
SSH2_MSG_NEWKEYS -> new_keys: bytestring &length=packet_length;
} &let {
detach: bool = $context.connection.update_state(ENCRYPTED, is_orig) &if(msg_type == SSH_MSG_NEWKEYS);
detach: bool = $context.connection.update_state(ENCRYPTED, is_orig) &if(msg_type == SSH2_MSG_NEWKEYS);
};
type SSH_KEXINIT(is_orig: bool, length: uint32) = record {
type SSH_KEXINIT(length: uint32) = record {
cookie : bytestring &length=16;
kex_algorithms_len : uint32;
kex_algorithms : bytestring &length=kex_algorithms_len;
server_host_key_algorithms_len : uint32;
server_host_key_algorithms : bytestring &length=server_host_key_algorithms_len;
encryption_algorithms_client_to_server_len : uint32;
encryption_algorithms_client_to_server : bytestring &length=encryption_algorithms_client_to_server_len;
encryption_algorithms_server_to_client_len : uint32;
encryption_algorithms_server_to_client : bytestring &length=encryption_algorithms_server_to_client_len;
mac_algorithms_client_to_server_len : uint32;
mac_algorithms_client_to_server : bytestring &length=mac_algorithms_client_to_server_len;
mac_algorithms_server_to_client_len : uint32;
mac_algorithms_server_to_client : bytestring &length=mac_algorithms_server_to_client_len;
compression_algorithms_client_to_server_len : uint32;
compression_algorithms_client_to_server : bytestring &length=compression_algorithms_client_to_server_len;
compression_algorithms_server_to_client_len : uint32;
compression_algorithms_server_to_client : bytestring &length=compression_algorithms_server_to_client_len;
languages_client_to_server_len : uint32;
languages_client_to_server : bytestring &length=languages_client_to_server_len;
languages_server_to_client_len : uint32;
languages_server_to_client : bytestring &length=languages_server_to_client_len;
kex_algorithms : ssh_string;
server_host_key_algorithms : ssh_string;
encryption_algorithms_client_to_server : ssh_string;
encryption_algorithms_server_to_client : ssh_string;
mac_algorithms_client_to_server : ssh_string;
mac_algorithms_server_to_client : ssh_string;
compression_algorithms_client_to_server : ssh_string;
compression_algorithms_server_to_client : ssh_string;
languages_client_to_server : ssh_string;
languages_server_to_client : ssh_string;
first_kex_packet_follows : uint8;
reserved : uint32;
} &length=length;
type SSH_DH_GEX_REQUEST(is_orig: bool, length: uint32) = record {
type SSH_DH_GEX_REQUEST(length: uint32) = record {
min: uint32;
n : uint32;
max: uint32;
} &length=12;
type SSH_DH_GEX_REQUEST_OLD(is_orig: bool, length: uint32) = record {
type SSH_DH_GEX_REQUEST_OLD(length: uint32) = record {
payload: bytestring &length=length;
} &length=length;
type SSH_DH_GEX_GROUP(is_orig: bool, length: uint32) = record {
p: mpint;
g: mpint;
type SSH_DH_GEX_GROUP(length: uint32) = record {
p: ssh_string;
g: ssh_string;
} &length=length;
type SSH_DH_GEX_INIT(is_orig: bool, length: uint32) = record {
e: mpint;
type SSH_DH_GEX_INIT(length: uint32) = record {
e: ssh_string;
} &length=length;
type SSH_DH_GEX_REPLY(is_orig: bool, length: uint32) = record {
type SSH_DH_GEX_REPLY(length: uint32) = record {
k_s : ssh_string;
f : mpint;
f : ssh_string;
signature: ssh_string;
} &length=length;
#type SSH_NEWKEYS(is_orig: bool, length: uint32) = record {
# blah: ;
#} &let {
# detach: bool = $context.connection.detach();
#} &length=0;
type mpint = record {
len: uint32;
val: bytestring &length=len;
};
type ssh_string = record {
len: uint32;
val: bytestring &length=len;