How to decode type code: b872 0000 0000 0000 4075 0000 0000 0000?

kostya_mamanjvitch2019-04-17 11:02:32

reverse engineering

kostya_mamanjvitch, 2019-04-17 11:02:32

Help decipher the code or explain how to do it yourself?

the code

b872 0000 0000 0000 4075 0000 0000 0000
542d 4442 0707 0001 4141 4141 0e00 000a
706b 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 001d
6d65 7461 6461 7461 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0017
636c 6173 735f 416c 6172 6d52 6561 6c6d
0000 0000 0000 0000 0000 0000 0000 000f
636c 6173 735f 4d75 7369 6354 7261 636b
5265 616c 6d00 0000 0000 0000 0000 000a
636c 6173 735f 536c 6565 7050 6861 7365
5265 616c 6d00 0000 0000 0000 0000 000a
636c 6173 735f 536c 6565 7050 6f69 6e74
5265 616c 6d00 0000 0000 0000 0000 000a
636c 6173 735f 536c 6565 7052 6561 6c6d
0000 0000 0000 0000 0000 0000 0000 000f
636c 6173 735f 536e 6f72 6552 6561 6c6d
0000 0000 0000 0000 0000 0000 0000 000f
636c 6173 735f 5472 656e 6452 6561 6c6d
0000 0000 0000 0000 0000 0000 0000 000f
636c 6173 735f 5765 6174 6865 7248 6f75
7252 6561 6c6d 0000 0000 0000 0000 0009
4141 4141 0200 0002 0a00 0000 0000 0000
4141 4141 0d00 0002 706b 5f74 6162 6c65
0000 0000 0000 0007 706b 5f70 726f 7065
7274 7900 0000 0004 4141 4141 0100 0002

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5 answer(s)

Saboteur, 2019-04-17
@kostya_mamanjvitch

Nothing is encrypted here.
Just data, contains lines of text like:
class_AlarmRealm, class_MusicTrackRealm, class_SleepPhaseRealm, class_SleepPointRealm, class_SleepRealm, class_SnoreRealm, class_TrendRealm, class_WeatherHourRealm, pk_table, pk_property I
suspect that this is the internal format of some program, since there is no known signature at the beginning.
It is necessary not to decrypt, but to reverse-engineer.

Ronald McDonald, 2019-04-17
@Zoominger

In what form is the information presented - text, picture?
Decrypt or decode ?
In the first case, you need to know the algorithm and the key.
In the second - only a way of coding.
At the moment the question looks like "guess: peswpok[vgfp[wvf,l2=3vkqmvraenb'".

Roman, 2019-04-17
@myjcom

help decipher the code

Well? almost guessed but not all
Ј[email protected] AAAA
pk metadata
class_AlarmTrackRealm
class_MusicTrackRealm
class_SleepPhaseRealm
class_SleepPointRealm
class_SleepRealm
class_SnoreRealm
class_TrendRealm
class_WeatherHourRealm
AAAA
AAAA
pk_table
pk_property
AAAA

Stalker_RED, 2019-04-17
@Stalker_RED

First available hex to ascii converter
tomeko.net/online_tools/hex_to_ascii.php?lang=en

Roman Mirilaczvili, 2019-04-17
@2ord

dump

00000000: b872 0000 0000 0000 4075 0000 0000 0000 [email protected]
00000010: 542d 4442 0707 0001 4141 4141 0e00 000a T-DB....AAAA....
00000020: 706b 0000 0000 0000 0000 0000 0000 0000 pk..............
00000030: 0000 0000 0000 0000 0000 0000 0000 001d ................
00000040: 6d65 7461 6461 7461 0000 0000 0000 0000 metadata........
00000050: 0000 0000 0000 0000 0000 0000 0000 0017 ................
00000060: 636c 6173 735f 416c 6172 6d52 6561 6c6d class_AlarmRealm
00000070: 0000 0000 0000 0000 0000 0000 0000 000f ................
00000080: 636c 6173 735f 4d75 7369 6354 7261 636b class_MusicTrack
00000090: 5265 616c 6d00 0000 0000 0000 0000 000a Realm...........
000000a0: 636c 6173 735f 536c 6565 7050 6861 7365 class_SleepPhase
000000b0: 5265 616c 6d00 0000 0000 0000 0000 000a Realm...........
000000c0: 636c 6173 735f 536c 6565 7050 6f69 6e74 class_SleepPoint
000000d0: 5265 616c 6d00 0000 0000 0000 0000 000a Realm...........
000000e0: 636c 6173 735f 536c 6565 7052 6561 6c6d class_SleepRealm
000000f0: 0000 0000 0000 0000 0000 0000 0000 000f ................
00000100: 636c 6173 735f 536e 6f72 6552 6561 6c6d class_SnoreRealm
00000110: 0000 0000 0000 0000 0000 0000 0000 000f ................
00000120: 636c 6173 735f 5472 656e 6452 6561 6c6d class_TrendRealm
00000130: 0000 0000 0000 0000 0000 0000 0000 000f ................
00000140: 636c 6173 735f 5765 6174 6865 7248 6f75 class_WeatherHou
00000150: 7252 6561 6c6d 0000 0000 0000 0000 0009 rRealm..........
00000160: 4141 4141 0200 0002 0a00 0000 0000 0000 AAAA............
00000170: 4141 4141 0d00 0002 706b 5f74 6162 6c65 AAAA....pk_table
00000180: 0000 0000 0000 0007 706b 5f70 726f 7065 ........pk_prope
00000190: 7274 7900 0000 0004 4141 4141 0100 0002 rty.....AAAA....
This is the serialization of objects in the ObjectStore for Realm. The format can be viewed here:
object_store.cpp

Realm is a mobile database that runs directly inside phones, tablets or wearables.
This repository holds the source code for the iOS, macOS, tvOS & watchOS versions of Realm Swift & Realm Objective-C.