ir_sniff¶
Presentation¶
ir_sniff allows to sniff and decode the IR signals captured by an IRMA device. It allows to choose the frequency of the receiver (FREQUENCY parameter, set to 38 kHz by default) and to indicates how many signals have to be captured (NUMBER parameter).
Compatible devices¶
Input parameters¶
Name |
Default value |
Possible values |
Description |
---|---|---|---|
INTERFACE |
irma0 |
irmaX |
Interface to display |
FREQUENCY |
38 |
<integer> |
Frequency to use |
NUMBER |
1 |
<integer> |
Number of captured signals |
Output parameters¶
If only one signal has been captured, the following output parameters are generated (CODE and CODE_SIZE are only generated if a known protocol is identified):
Name |
Possible values |
Description |
---|---|---|
INTERFACE |
irmaX |
Selected interface |
DATA |
<integers list> |
Raw data describing the signal |
PROTOCOL |
<string> |
Identified protocol of the signal |
CODE (optional) |
<hexadecimal> |
IR Code included in the signal |
CODE_SIZE (optional) |
<integer> |
Size of the IR Code included in the signal |
If multiple signals have been captured, the same output parameters are generated, but are suffixed by the number of the signals :
Name |
Possible values |
Description |
---|---|---|
INTERFACE |
irmaX |
Selected interface |
DATA1 |
<integers list> |
Raw data describing the 1st signal |
PROTOCOL1 |
<string> |
Identified protocol of the 1st signal |
CODE1 (optional) |
<hexadecimal> |
IR Code included in the 1st signal |
CODE_SIZE1 (optional) |
<integer> |
Size of the IR Code included in the 1st signal |
DATA2 |
<integers list> |
Raw data describing the 2nd signal |
PROTOCOL2 |
<string> |
Identified protocol of the 2nd signal |
CODE2 (optional) |
<hexadecimal> |
IR Code included in the 2nd signal |
CODE_SIZE2 (optional) |
<integer> |
Size of the IR Code included in the 2nd signal |
... |
... |
... |
Usage¶
Basic Usage¶
If you want to capture one signal, use the following command :
$ mirage ir_sniff
[INFO] Module ir_sniff loaded !
[PACKET] << IR - NEC Packet | code (32 bits) =76044fc0 >>
[INFO] Mirage process terminated !
If you want to capture multiple signals, you can use the NUMBER parameter in order to provide the number of signal to capture:
$ mirage ir_sniff NUMBER=3
[INFO] Module ir_sniff loaded !
[PACKET] << IR - NEC Packet | code (32 bits) =76044ff0 >>
[PACKET] << IR - NEC Packet | code (32 bits) =76044fd0 >>
[PACKET] << IR - NEC Packet | code (32 bits) =76044fc0 >>
[INFO] Mirage process terminated !
Performing a replay attack¶
This module can be combined with ir_inject in order to perform replay attacks. You can launch this kind of attack by using the following command:
$ mirage "ir_sniff|ir_inject"
[INFO] Module ir_sniff loaded !
[INFO] Module ir_inject loaded !
[PACKET] << IR - NEC Packet | code (32 bits) =76044fc0 >>
[INFO] Injecting ...
[SUCCESS] Injection done !
[INFO] Mirage process terminated !