# This file is part of Scapy
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# Scapy is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# any later version.
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#
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# Scapy is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Scapy. If not, see <http://www.gnu.org/licenses/>.
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# Author: Sylvain SARMEJEANNE
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# scapy.contrib.description = Ubberlogger dissectors
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# scapy.contrib.status = loads
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from scapy.packet import *
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from scapy.fields import *
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# Syscalls known by Uberlogger
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uberlogger_sys_calls = {0:"READ_ID",
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1:"OPEN_ID",
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2:"WRITE_ID",
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3:"CHMOD_ID",
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4:"CHOWN_ID",
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5:"SETUID_ID",
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6:"CHROOT_ID",
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7:"CREATE_MODULE_ID",
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8:"INIT_MODULE_ID",
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9:"DELETE_MODULE_ID",
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10:"CAPSET_ID",
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11:"CAPGET_ID",
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12:"FORK_ID",
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13:"EXECVE_ID"}
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# First part of the header
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class Uberlogger_honeypot_caract(Packet):
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name = "Uberlogger honeypot_caract"
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fields_desc = [ByteField("honeypot_id", 0),
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ByteField("reserved", 0),
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ByteField("os_type_and_version", 0)]
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# Second part of the header
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class Uberlogger_uber_h(Packet):
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name = "Uberlogger uber_h"
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fields_desc = [ByteEnumField("syscall_type", 0, uberlogger_sys_calls),
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IntField("time_sec", 0),
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IntField("time_usec", 0),
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IntField("pid", 0),
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IntField("uid", 0),
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IntField("euid", 0),
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IntField("cap_effective", 0),
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IntField("cap_inheritable", 0),
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IntField("cap_permitted", 0),
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IntField("res", 0),
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IntField("length", 0)]
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# The 9 following classes are options depending on the syscall type
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class Uberlogger_capget_data(Packet):
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name = "Uberlogger capget_data"
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fields_desc = [IntField("target_pid", 0)]
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class Uberlogger_capset_data(Packet):
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name = "Uberlogger capset_data"
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fields_desc = [IntField("target_pid", 0),
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IntField("effective_cap", 0),
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IntField("permitted_cap", 0),
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IntField("inheritable_cap", 0)]
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class Uberlogger_chmod_data(Packet):
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name = "Uberlogger chmod_data"
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fields_desc = [ShortField("mode", 0)]
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class Uberlogger_chown_data(Packet):
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name = "Uberlogger chown_data"
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fields_desc = [IntField("uid", 0),
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IntField("gid", 0)]
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class Uberlogger_open_data(Packet):
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name = "Uberlogger open_data"
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fields_desc = [IntField("flags", 0),
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IntField("mode", 0)]
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class Uberlogger_read_data(Packet):
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name = "Uberlogger read_data"
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fields_desc = [IntField("fd", 0),
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IntField("count", 0)]
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class Uberlogger_setuid_data(Packet):
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name = "Uberlogger setuid_data"
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fields_desc = [IntField("uid", 0)]
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class Uberlogger_create_module_data(Packet):
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name = "Uberlogger create_module_data"
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fields_desc = [IntField("size", 0)]
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class Uberlogger_execve_data(Packet):
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name = "Uberlogger execve_data"
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fields_desc = [IntField("nbarg", 0)]
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# Layer bounds for Uberlogger
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bind_layers(Uberlogger_honeypot_caract,Uberlogger_uber_h)
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bind_layers(Uberlogger_uber_h,Uberlogger_capget_data)
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bind_layers(Uberlogger_uber_h,Uberlogger_capset_data)
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bind_layers(Uberlogger_uber_h,Uberlogger_chmod_data)
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bind_layers(Uberlogger_uber_h,Uberlogger_chown_data)
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bind_layers(Uberlogger_uber_h,Uberlogger_open_data)
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bind_layers(Uberlogger_uber_h,Uberlogger_read_data)
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bind_layers(Uberlogger_uber_h,Uberlogger_setuid_data)
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bind_layers(Uberlogger_uber_h,Uberlogger_create_module_data)
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bind_layers(Uberlogger_uber_h,Uberlogger_execve_data)
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