I have some log file that I want to convert to PCAP file format to be opened in Wireshark. The log file is UDS (Unified Diagnostic Services) log of a car firmware update. What is the best practice to do that?
The log file lines look like this:
***BUSMASTER Ver 3.2.1***
***PROTOCOL CAN***
***NOTE: PLEASE DO NOT EDIT THIS DOCUMENT***
***[START LOGGING SESSION]***
***START DATE AND TIME 4:6:2018 9:2:12:212***
***HEX***
***SYSTEM MODE***
***START CHANNEL BAUD RATE***
***CHANNEL 2 - Kvaser - Kvaser USBcan Pro 5xHS #0 (Channel 1), Serial Number- 0, Firmware- 0x0000013b 0x00030007 - 500000 bps***
***END CHANNEL BAUD RATE***
***START DATABASE FILES***
***END DATABASE FILES***
***<Time><Tx/Rx><Channel><CAN ID><Type><DLC><DataBytes>***
00:00:00:0000 Rx 2 0x064 s 8 20 20 20 20 20 20 20 20
00:00:00:0574 Rx 2 0x7cd s 8 4d 72 2e 20 61 6e 64 20
00:00:00:0952 Rx 2 0x7df s 8 02 01 00 00 00 00 00 00
00:00:00:1457 Rx 2 0x05b s 8 ad dc 0b cc 0a c3 49 40
00:00:00:2069 Rx 2 0x05c s 8 63 d3 4a 21 90 4b c4 bf
00:00:00:2649 Rx 2 0x7cd s 8 4d 72 73 2e 20 44 75 72
Related
I am trying to print a Datamatrix barcode using an EPSON m30 Printer.
When the following HEX values are transmitted, no action is taken.
I was able to get this HEX value from the page below.
https://download.epson-biz.com/modules/ref_escpos/index.php?content_id=170
1d 28 6b 0d 00 36 50 30 31 32 33 34 35 36 37 38 39 30
1d 28 6b 03 00 36 54 30 0d 0a
Can you please let me know if something is wrong?
thanks
Maybe the description on the reference page is incorrect.
For example, the printing of the Aztec code is Function 581, which is 35 51 30.
The second byte of other barcodes is 51.
By analogy, there is a possibility of 36 51 30 instead of 36 54 30.
Please try sending the following command.
Q:
1d 28 6b 0d 00 36 50 30 31 32 33 34 35 36 37 38 39 30 1d 28 6b 03 00 36 54 30 0d 0a
A:
1d 28 6b 0d 00 36 50 30 31 32 33 34 35 36 37 38 39 30 1d 28 6b 03 00 36 51 30 0d 0a
Some time ago I started trying to mod my Samsung Galaxy S3 (International edition (I9300)), and I ended up with the Bootlogo, this is the FIRST image that you see when you turn on the Galaxy S3. I wanted to change it, as it is quite easy on other devices.
This is where I ran into troubles, I asked around on XDA-developes [link 1] (http://forum.xda-developers.com/galaxy-s3/help/removal-bootlogo-t2662444) and [link 2] (http://forum.xda-developers.com/showthread.php?t=2317694) but most of the answers led me nowhere. I ended up with the sboot.bin which is the secondary boot program (I guess this is how you can call it). To open it was quite difficult for a noob like me, but with hexadecimal editor HxD I opened it and actually found the bootlogo! (I copied the bytes into a jpg and it showed up normally.) I changed the bytes with another jpg image I made myself, and tried to flash it to the phone, but it failed. everything I tried afterwards failed, and I wondered why.
I downloaded a couple of sboot.bin for the i9300, but different countries, and I compared the hex code. There seemed to be subtle changes: one was in the compile date and serie nr. And there rest was a jumble of random character 256 bytes long.
I found that there are 4 sequences of 256 bytes long throughout the sboot.bin. An example of one:
EA E9 0C 62 B0 E0 68 86 5A 7B BD CA 50 3D 21 02
17 2C AC 10 09 49 62 E1 DA EB F4 94 B6 74 68 15
E6 90 2F CA 2F 75 67 C6 34 AE A3 A0 8F BC 60 62
63 87 8C C4 6C 8A 39 AA 7C 8A C7 E1 14 A3 C1 37
51 43 85 C0 09 97 05 AF 32 86 32 8C 58 7D C1 8F
91 A1 5E F1 9F D7 24 DF 08 82 1B AD FA C7 72 24
BC 35 34 6F 0F 42 C9 4E 7F AB FC 72 BC 64 71 84
DC 30 BB D5 AD D4 DE 01 9A E9 FB AA 1F 69 6F 52
3D E9 2A 52 6B 7E 9B 79 DE BD 7C 55 31 51 D6 99
BE 74 4F 22 6F 23 2F BF 7A 81 EF 5B 20 BF 75 03
D3 84 61 37 81 50 ED 71 66 4F 3D 34 0E 5A 33 4D
86 E2 E7 D0 8F 2B 48 5E 85 B5 E6 3F 56 51 70 74
CE 87 52 2D 47 D0 39 F6 CD 50 EE 76 F4 8E 79 7C
90 CF 4C 07 D5 47 AF 86 3D 33 3B A1 2A 70 74 4F
D1 60 9F 9E 28 96 C9 6E 9D DA 12 CB E1 8C 5B A5
CA AC 84 E2 26 1E 6F FD 4E EE B8 53 6E 7B 30 19
Maybe because it is helpful: one block is somewhat in the beginning, one is almost in the end, and the last two are at the real end of the file. So maybe the last two blocks are actually one big 512 byte block...
So I have come as far as to think that it might be a checksum or signature. But I am not sure how to find out what kind it is and how to generate one my self. searching for it hasn't helped me, because I cannot seem to find anything this long (256 bytes) only 256 bits long...
I was wondering if maybe someone could see what kind of siganture/checksum this is (Is this possible?) or how I can find out myself. or what I should do next...
[Edit on 25-08]
Alright, Since nobody has been able to answer the question yet, I was thinking of offering an incentive. I am willing to pay 1000 USD to whoever can help me alter the BOOTLOGO of the I9300!!!
Frank
Bootlogo is in the tar package /PARAMS and is called as logo.jpg, it should be writable via adb shell in twrp with this command:
cat /dev/block/platform/sdio_mmc/by-name/PARAMS > /sdcard/PARAMS.tar
Please note that PARAMS partition has stored SBOOT params at the end of the file. Just count 512 bytes from the last one, this is the last param, 512 bytes above is the next, until end of tar package.
Seems to be a checksum, though I cant be sure. One thing is certain, you've gone extremely deep in stuff. It could help to ask the guys at samsung, or somebody with great knowledge of kernels.
The first and second bootloader are signed.
A first bootloader that don't check the signatures of the second bootloader exist, so if you install that, you can then use u-boot as second bootloader.
See https://blog.forkwhiletrue.me/posts/an-almost-fully-libre-galaxy-s3/ for more details.
I have to integrate Passbook with a website that provides PDF417 barcodes with data encoded in binary (as opposed to text), such as this:
Is there any way I can encode this binary chunk in pass.json so that Passbook displays it on the iPhone identically to the original picture?
Again, I cannot switch to text-based barcodes because I do not own the data. Just for clarification, the attached picture contains a PDF417 barcode that, when decoded, contains non-printable characters, such as the NULL character, which is why I refer to it as binary.
UPDATE
This is how the image decodes into a byte array:
01 00 01 00 02 00 E7 C4 B5 96 B8 42 94 B3 B4 75
1A D1 F2 38 92 EA B5 0E 17 5D 0B 2A AA 64 18 CC
28 62 86 E5 74 5D A3 89 09 12 6E D5 7A 1A C9 EE
BF 23 9C E1 60 AD 9E DE 92 6D E5 79 99 C7 91 F1
6A D5 82 2E B6 E3 81 24 F8 0A F8 E6 44 5D 56 D2
00 00 00 00 00 00 40 0D 00 09 20 23 00 96 13 5C
10 EC 0C EA A3 E8 A3 20 30 4B 2A 20 7D 0F BB DF
F7 5E FA 1E 76 F7 40 20 10 08 04 02 81 40 20 30
A3 D5 6C 1A 04 76 14 10
This is how I try to transform it into a utf-8 string:
{"message": "\u0001\u0000\u0001\u0000\u0002\u0000\u00E7\u00C4\u00B5\u0096\u00B8\u0042\u0094\u00B3\u00B4\u0075\u001A\u00D1\u00F2\u0038\u0092\u00EA\u00B5\u000E\u0017\u005D\u000B\u002A\u00AA\u0064\u0018\u00CC\u0028\u0062\u0086\u00E5\u0074\u005D\u00A3\u0089\u0009\u0012\u006E\u00D5\u007A\u001A\u00C9\u00EE\u00BF\u0023\u009C\u00E1\u0060\u00AD\u009E\u00DE\u0092\u006D\u00E5\u0079\u0099\u00C7\u0091\u00F1\u006A\u00D5\u0082\u002E\u00B6\u00E3\u0081\u0024\u00F8\u000A\u00F8\u00E6\u0044\u005D\u0056\u00D2\u0000\u0000\u0000\u0000\u0000\u0000\u0040\u000D\u0000\u0009\u0020\u0023\u0000\u0096\u0013\u005C\u0010\u00EC\u000C\u00EA\u00A3\u00E8\u00A3\u0020\u0030\u004B\u002A\u0020\u007D\u000F\u00BB\u00DF\u00F7\u005E\u00FA\u001E\u0076\u00F7\u0040\u0020\u0010\u0008\u0004\u0002\u0081\u0040\u0020\u0030\u00A3\u00D5\u006C\u001A\u0004\u0076\u0014\u0010";}
However, Passbook does not display an equivalent barcode. In fact, it displays just a few first bytes.
I don't think you want to decode the binary data of the image, but instead want to read the data from the barcode as if it were scanned.
You could use a service like http://zxing.org/w/decode.jspx which gives you the value of the barcode as if it were being scanned.
Send the 'Raw Text' value to pass.json.
I haven't used this service, but after a quick read I'm assuming it goes in 'message' below:
"barcode" : {
"message" : "ABCD 123 EFGH 456 IJKL 789 MNOP",
"format" : "PKBarcodeFormatPDF417",
"messageEncoding" : "iso-8859-1"
}
ref: https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/PassKit_PG/Chapters/Creating.html#//apple_ref/doc/uid/TP40012195-CH4-SW1
I am trying to inspect h264 bitstream coming from hardware encoder on TI Davinci board.
00 00 0b c8 25 88 84 27 e4 a2 8e 32 77 87 ec 16 86 37 d7 8e 99 e1 8c 3b 8b ce fe a5 fc e9 9c f3 34 87 9f d7 ff 66 7d c1 ce ed 62 18 05 35 00 08 0f f6 69 12 08 a8 32 5e c7 fe c8 bf 77 e4 62 e4 9e 8b b0 6e f0 39 60 5b e8 26 78 52 d8 24 75 5c 2f 06 ce 71 04 aa cb e3 19 d0 dd 02 b5 e7 0e a7 ce 77 70 a9 7c 46 1e 65 b3 7b 02 c9 d4 72 d7 97 36 f3 59 93 e5 e6 92 ff 8f ba 29 03 d5 da 0a 7a 14 1f 19 b5 88 b1 98 7a 3b e1 58 a2 88 a1 5a 4a
The first 4 bytes seams to be size of the trailing chunk ...
What is the format of this bitstream?
How to extract nal_unit_type and slice_type/pict_type ?
Is there forbidden zero bit present ?
this source states that stream does not need to contain start codes, sequence parameter set NALUs and picture parameter set NALUs. And in that case decoder must obtain SPS and PPS NALUs externally (Some kind of extradata parameter to decoder..).
The ITU-T H.264 standard and the ISO/IEC MPEG-4 AVC standard (formally, ISO/IEC 14496-10 – MPEG-4 Part 10, Advanced Video Coding) are jointly maintained so that they have identical technical content. (http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC)
The H.264 spec can be downloaded for free at:
http://www.itu.int/rec/T-REC-H.264/en
The ISO version costs currently CHF 323.00 at http://webstore.iec.ch/
The bitstream format is defined in ISO/IEC 14496-10:
Information technology — Coding of audio-visual objects — Part 10:
Advanced Video Coding
You can download the standard from itu.int website.
The data you provided looks like NAL Unit 5 (lower 5 bits of first byte of payload, after first 4 bytes with length are skipped) and it does not carry SPS/PPS units.
See also previous topics on H.264 decoding, e.g. H.264 stream header
I'm reading a book named 802.11 Wireless Networks The Definitive Guide(second edition) recently. I find myself unable to understand the algorithm of WEP shared-key authentication.
In the book, chapter 8.3, section "The legacy of shared-key authentication", it says
The third frame is the mobile station's response to the challenge. To prove that it is allowed on the network, the mobile station constructs a management frame with three information elements: the Authentication Algorithm Identifier, a Sequence Number of 3, and the Challenge Text. Before transmitting the frame, the mobile station processes the frame with WEP (BUT HOW???). The header identifying the frame as an authentication frame is preserved, but the information elements are hidden by WEP.
So, I'd like to ask the kind community here.
Here is my example WEP auth session packets captured with Tamosoft Commview for wifi 6.3.
AP MAC: 000E.2E7C.52A9 (Edimax)
Wifi client: 0020.4A96.23C7 (Lantronix WiPort)
WEP key is 437B7A57F6762CC7271EBB16FC
You can find my packet capture here: http://down.nlscan.com/misc/WEP128-shared-key-success-1.ncf
Packet #55,#57,#59,#61 is the WEP authentication packets. #59 is "the third frame".
============================================================================
Packet #55, Direction: Pass-through, Time:16:11:42.634285, Size: 30
Wireless Packet Info
Signal level: 100%
Rate: 2.0 Mbps
Band: 802.11g
Channel: 11 - 2462 MHz
802.11
Frame Control: 0x00B0 (176)
Protocol version: 0
To DS: 0
From DS: 0
More Fragments: 0
Retry: 0
Power Management: 0
More Data: 0
Protected Frame: 0
Order: 0
Type: 0 - Management
Subtype: 11 - Authentication
Duration: 0x0102 (258)
Destination Address: 00:0E:2E:7C:52:A9
Source Address: 00:20:4A:96:23:C7
BSS ID: 00:0E:2E:7C:52:A9
Fragment Number: 0x0000 (0)
Sequence Number: 0x000E (14)
Authentication
Algorithm Number: 0x0001 (1) - Shared Key
Transaction Sequence Number: 0x0001 (1)
Status Code: 0x0000 (0) - Successful
Raw Data:
0x0000 B0 00 02 01 00 0E 2E 7C-52 A9 00 20 4A 96 23 C7 °......|R©. J–#Ç
0x0010 00 0E 2E 7C 52 A9 E0 00-01 00 01 00 00 00 ...|R©à.......
============================================================================
Packet #57, Direction: Pass-through, Time:16:11:42.638429, Size: 160
Wireless Packet Info
Signal level: 100%
Rate: 1.0 Mbps
Band: 802.11g
Channel: 11 - 2462 MHz
802.11
Frame Control: 0x00B0 (176)
Protocol version: 0
To DS: 0
From DS: 0
More Fragments: 0
Retry: 0
Power Management: 0
More Data: 0
Protected Frame: 0
Order: 0
Type: 0 - Management
Subtype: 11 - Authentication
Duration: 0x013A (314)
Destination Address: 00:20:4A:96:23:C7
Source Address: 00:0E:2E:7C:52:A9
BSS ID: 00:0E:2E:7C:52:A9
Fragment Number: 0x0000 (0)
Sequence Number: 0x0343 (835)
Authentication
Algorithm Number: 0x0001 (1) - Shared Key
Transaction Sequence Number: 0x0002 (2)
Status Code: 0x0000 (0) - Successful
Challenge text: 28 B8 9B EC 79 C1 AC B6 24 AD 54 A5 5A 96 EE 24 3E 25 F2 D5 B8 11 1C 2F E9 8D 2B A2 63 EA 3D 1F 40 6E 8C 3D 2C 7E 37 E9 5C 9C F4 0E F2 9C 50 88 21 DA 35 09 97 AE E3 BA 4E 56 77 9A B4 B1 F2 34 E9 AD
Raw Data:
0x0000 B0 00 3A 01 00 20 4A 96-23 C7 00 0E 2E 7C 52 A9 °.:.. J–#Ç...|R©
0x0010 00 0E 2E 7C 52 A9 30 34-01 00 02 00 00 00 10 80 ...|R©04.......€
0x0020 28 B8 9B EC 79 C1 AC B6-24 AD 54 A5 5A 96 EE 24 (¸›ìyÁ¬¶$T¥Z–î$
0x0030 3E 25 F2 D5 B8 11 1C 2F-E9 8D 2B A2 63 EA 3D 1F >%òÕ¸../é+¢cê=.
0x0040 40 6E 8C 3D 2C 7E 37 E9-5C 9C F4 0E F2 9C 50 88 #nŒ=,~7é\œô.òœPˆ
0x0050 21 DA 35 09 97 AE E3 BA-4E 56 77 9A B4 B1 F2 34 !Ú5.—®ãºNVwš´±ò4
0x0060 E9 AD 8D 98 05 28 A1 AD-3F DA 66 05 60 66 EA 24 é˜.(¡?Úf.`fê$
0x0070 02 DA 14 AC 66 CD DC E6-93 A8 79 23 70 87 39 44 .Ú.¬fÍÜ擨y#p‡9D
0x0080 17 4E 0F AC A2 CA 9F 84-5F 94 66 3C 04 AB 86 8E .N.¬¢ÊŸ„_”f<.«†Ž
0x0090 99 78 AB C9 E9 C0 91 95-9E 52 B1 7C 6B 22 63 C0 ™x«ÉéÀ‘•žR±|k"cÀ
============================================================================
Packet #59, Direction: Pass-through, Time:16:11:42.639825, Size: 168
Wireless Packet Info
Signal level: 100%
Rate: 2.0 Mbps
Band: 802.11g
Channel: 11 - 2462 MHz
802.11
Frame Control: 0x40B0 (16560)
Protocol version: 0
To DS: 0
From DS: 0
More Fragments: 0
Retry: 0
Power Management: 0
More Data: 0
Protected Frame: 1
Order: 0
Type: 0 - Management
Subtype: 11 - Authentication
Duration: 0x0102 (258)
Destination Address: 00:0E:2E:7C:52:A9
Source Address: 00:20:4A:96:23:C7
BSS ID: 00:0E:2E:7C:52:A9
Fragment Number: 0x0000 (0)
Sequence Number: 0x000F (15)
Authentication
Algorithm Number: 0x1300 (4864) - Reserved
Transaction Sequence Number: 0x00F6 (246)
Status Code: 0xB4BA (46266) - Reserved
Raw Data:
0x0000 B0 40 02 01 00 0E 2E 7C-52 A9 00 20 4A 96 23 C7 °#.....|R©. J–#Ç
0x0010 00 0E 2E 7C 52 A9 F0 00-00 13 F6 00 BA B4 A9 F5 ...|R©ð...ö.º´©õ
0x0020 77 E9 5D 1F A2 B2 CE 3A-AD 1E FD 31 EA 55 90 B8 wé].¢²Î:.ý1êU¸
0x0030 56 F6 EF 81 CE C5 95 B6-9B 2F C4 77 BD E0 DD 73 VöïÎÅ•¶›/Äw½àÝs
0x0040 C6 C8 CE F6 0B 3F 0E 8D-08 15 93 5C 26 6E DA 17 ÆÈÎö.?...“\&nÚ.
0x0050 83 34 A2 53 51 65 3C AE-7A 5C A5 EA 04 97 6E F0 ƒ4¢SQe<®z\¥ê.—nð
0x0060 53 02 02 91 08 51 87 8E-83 38 CD 23 35 E7 56 1B S..‘.Q‡Žƒ8Í#5çV.
0x0070 1D A8 52 8F E1 D4 21 FD-46 41 65 AD 26 AB 74 3D .¨RáÔ!ýFAe&«t=
0x0080 E0 13 12 66 F5 C1 67 B3-71 7F 83 77 A0 34 16 55 à..fõÁg³qƒw 4.U
0x0090 25 96 31 01 A0 9C D9 13-1E 7C E6 8F 15 8D 8A 7B %–1. œÙ..|æ.Š{
0x00A0 8E 6B 65 97 74 0B 23 71- Žke—t.#q
============================================================================
Packet #61, Direction: Pass-through, Time:16:11:42.640916, Size: 30
Wireless Packet Info
Signal level: 100%
Rate: 1.0 Mbps
Band: 802.11g
Channel: 11 - 2462 MHz
802.11
Frame Control: 0x00B0 (176)
Protocol version: 0
To DS: 0
From DS: 0
More Fragments: 0
Retry: 0
Power Management: 0
More Data: 0
Protected Frame: 0
Order: 0
Type: 0 - Management
Subtype: 11 - Authentication
Duration: 0x013A (314)
Destination Address: 00:20:4A:96:23:C7
Source Address: 00:0E:2E:7C:52:A9
BSS ID: 00:0E:2E:7C:52:A9
Fragment Number: 0x0000 (0)
Sequence Number: 0x0344 (836)
Authentication
Algorithm Number: 0x0001 (1) - Shared Key
Transaction Sequence Number: 0x0004 (4)
Status Code: 0x0000 (0) - Successful
Raw Data:
0x0000 B0 00 3A 01 00 20 4A 96-23 C7 00 0E 2E 7C 52 A9 °.:.. J–#Ç...|R©
0x0010 00 0E 2E 7C 52 A9 40 34-01 00 04 00 00 00 ...|R©#4......
============================================================================
I know, from the book, how RC4 works and I have written a python program to verify how WEP encrypts a 802.11 packet.
The remaining issue is I just cannot figure out how WEP authentication algorithm works(how #59 is calculated.
Waiting for your generous help.
my speculation says that when the challenge is sent in cleartext, the mobile station picks a random IV and using the pre-shared WEP key, it encrypts the challenge using RC4 when IV is used as the first 3 bytes of the key. These 3 bytes are sent in clear over the channel. Then, the problem starts here as mentioned later in the book. Anyone who is listening to the communication, can eavesdrop and find out the challenge and the ciphertext, xoring these two, the attacker gets the keystream and asks for a new challenge and encrypts it with the same IV as the legitimate user and the same keystream. He can then simply authenticate, though he still does not know the WEP key :)
This is a good question, but specifications and books written about them are often incomplete in the place where you need them the most.
Working source code is your best bet in this case and the linux/net/mac80211/wep.c code is out there for the reading.