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#------------------------------------------------------------
# $File: android,v 1.24 2023/02/20 16:51:59 christos Exp $
# Various android related magic entries
#------------------------------------------------------------
# Dalvik .dex format. http://retrodev.com/android/dexformat.html
# From <mkf@google.com> "Mike Fleming"
# Fixed to avoid regexec 17 errors on some dex files
# From <diff@lookout.com> "Tim Strazzere"
0 string dex\n
>0 regex dex\n[0-9]{2}\0 Dalvik dex file
>4 string >000 version %s
0 string dey\n
>0 regex dey\n[0-9]{2}\0 Dalvik dex file (optimized for host)
>4 string >000 version %s
# Android bootimg format
# From https://android.googlesource.com/\
# platform/system/core/+/master/mkbootimg/bootimg.h
# https://github.com/djrbliss/loki/blob/master/loki.h#L43
0 string ANDROID! Android bootimg
>1024 string LOKI \b, LOKI'd
>>1028 lelong 0 \b (boot)
>>1028 lelong 1 \b (recovery)
>8 lelong >0 \b, kernel
>>12 lelong >0 \b (%#x)
>16 lelong >0 \b, ramdisk
>>20 lelong >0 \b (%#x)
>24 lelong >0 \b, second stage
>>28 lelong >0 \b (%#x)
>36 lelong >0 \b, page size: %d
>38 string >0 \b, name: %s
>64 string >0 \b, cmdline (%s)
# Android Backup archive
# From: Ariel Shkedi
# Update: Joerg Jenderek
# URL: https://github.com/android/platform_frameworks_base/blob/\
# 0bacfd2ba68d21a68a3df345b830bc2a1e515b5a/services/java/com/\
# android/server/BackupManagerService.java#L2367
# Reference: https://sourceforge.net/projects/adbextractor/
# android-backup-extractor/perl/backupencrypt.pl
# Note: only unix line feeds "\n" found
# After the header comes a tar file
# If compressed, the entire tar file is compressed with JAVA deflate
#
# Include the version number hardcoded with the magic string to avoid
# false positives
0 string/b ANDROID\ BACKUP\n Android Backup
# maybe look for some more characteristics like linefeed '\n' or version
#>16 string \n
# No mime-type defined officially
!:mime application/x-google-ab
!:ext ab
# on 2nd line version (often 1, 2 on kitkat 4.4.3+, 4 on 7.1.2)
>15 string >\0 \b, version %s
# "1" on 3rd line means compressed
>17 string 0\n \b, Not-Compressed
>17 string 1\n \b, Compressed
# The 4th line is encryption "none" or "AES-256"
# any string as long as it's not the word none (which is matched below)
>19 string none\n \b, Not-Encrypted
# look for backup content after line with encryption info
#>>19 search/7 \n
# data part after header for not encrypted Android Backup
#>>>&0 ubequad x \b, content %#16.16llx...
# look for zlib compressed by ./compress after message with 1 space at end
#>>>&0 indirect x \b; contains
# look for tar archive block by ./archive for package name manifest
>>288 string ustar \b; contains
>>>31 use tar-file
# look for zip/jar archive by ./archive ./zip after message with 1 space at end
#>>2079 search/1025/s PK\003\004 \b; contains
#>>>&0 indirect x
>19 string !none
>>19 regex/1l \^([^n\n]|n[^o]|no[^n]|non[^e]|none.+).* \b, Encrypted (%s)
# Commented out because they don't seem useful to print
# (but they are part of the header - the tar file comes after them):
# The 5th line is User Password Salt (128 Hex)
# string length too high with standard src configuration
#>>>&1 string >\0 \b, PASSWORD salt: "%-128.128s"
#>>>&1 regex/1l .* \b, Password salt: %s
# The 6th line is Master Key Checksum Salt (128 Hex)
#>>>>&1 regex/1l .* \b, Master salt: %s
# The 7th line is Number of PBDKF2 Rounds (10000)
#>>>>>&1 regex/1l .* \b, PBKDF2 rounds: %s
# The 8th line is User key Initialization Vector (IV) (32 Hex)
#>>>>>>&1 regex/1l .* \b, IV: %s
#>>>>>>&1 regex/1l .* \b, IV: %s
# The 9th line is Master IV+Key+Checksum (192 Hex)
#>>>>>>>&1 regex/1l .* \b, Key: %s
# look for new line separator char after line number 9
#>>>0x204 ubyte 0x0a NL found
#>>>>&1 ubequad x \b, Content magic %16.16llx
# *.pit files by Joerg Jenderek
# https://forum.xda-developers.com/showthread.php?p=9122369
# https://forum.xda-developers.com/showthread.php?t=816449
# Partition Information Table for Samsung's smartphone with Android
# used by flash software Odin
0 ulelong 0x12349876
# 1st pit entry marker
>0x01C ulequad&0xFFFFFFFCFFFFFFFC =0x0000000000000000
# minimal 13 and maximal 18 PIT entries found
>>4 ulelong <128 Partition Information Table for Samsung smartphone
>>>4 ulelong x \b, %d entries
# 1. pit entry
>>>4 ulelong >0 \b; #1
>>>0x01C use PIT-entry
>>>4 ulelong >1 \b; #2
>>>0x0A0 use PIT-entry
>>>4 ulelong >2 \b; #3
>>>0x124 use PIT-entry
>>>4 ulelong >3 \b; #4
>>>0x1A8 use PIT-entry
>>>4 ulelong >4 \b; #5
>>>0x22C use PIT-entry
>>>4 ulelong >5 \b; #6
>>>0x2B0 use PIT-entry
>>>4 ulelong >6 \b; #7
>>>0x334 use PIT-entry
>>>4 ulelong >7 \b; #8
>>>0x3B8 use PIT-entry
>>>4 ulelong >8 \b; #9
>>>0x43C use PIT-entry
>>>4 ulelong >9 \b; #10
>>>0x4C0 use PIT-entry
>>>4 ulelong >10 \b; #11
>>>0x544 use PIT-entry
>>>4 ulelong >11 \b; #12
>>>0x5C8 use PIT-entry
>>>4 ulelong >12 \b; #13
>>>>0x64C use PIT-entry
# 14. pit entry
>>>4 ulelong >13 \b; #14
>>>>0x6D0 use PIT-entry
>>>4 ulelong >14 \b; #15
>>>0x754 use PIT-entry
>>>4 ulelong >15 \b; #16
>>>0x7D8 use PIT-entry
>>>4 ulelong >16 \b; #17
>>>0x85C use PIT-entry
# 18. pit entry
>>>4 ulelong >17 \b; #18
>>>0x8E0 use PIT-entry
0 name PIT-entry
# garbage value implies end of pit entries
>0x00 ulequad&0xFFFFFFFCFFFFFFFC =0x0000000000000000
# skip empty partition name
>>0x24 ubyte !0
# partition name
>>>0x24 string >\0 %-.32s
# flags
>>>0x0C ulelong&0x00000002 2 \b+RW
# partition ID:
# 0~IPL,MOVINAND,GANG;1~PIT,GPT;2~HIDDEN;3~SBL,HIDDEN;4~SBL2,HIDDEN;5~BOOT;6~kernel,RECOVER,misc;7~RECOVER
# ;11~MODEM;20~efs;21~PARAM;22~FACTORY,SYSTEM;23~DBDATAFS,USERDATA;24~CACHE;80~BOOTLOADER;81~TZSW
>>>0x08 ulelong x (%#x)
# filename
>>>0x44 string >\0 "%-.64s"
#>>>0x18 ulelong >0
# blocksize in 512 byte units ?
#>>>>0x18 ulelong x \b, %db
# partition size in blocks ?
#>>>>0x22 ulelong x \b*%d
# Android sparse img format
# From https://android.googlesource.com/\
# platform/system/core/+/master/libsparse/sparse_format.h
0 lelong 0xed26ff3a Android sparse image
>4 leshort x \b, version: %d
>6 leshort x \b.%d
>16 lelong x \b, Total of %d
>12 lelong x \b %d-byte output blocks in
>20 lelong x \b %d input chunks.
# Android binary XML magic
# In include/androidfw/ResourceTypes.h:
# RES_XML_TYPE = 0x0003 followed by the size of the header (ResXMLTree_header),
# which is 8 bytes (2 bytes type + 2 bytes header size + 4 bytes size).
# The strength is increased to avoid misidentifying as Targa image data
0 lelong 0x00080003 Android binary XML
!:strength +1
# Android cryptfs footer
# From https://android.googlesource.com/\
# platform/system/vold/+/refs/heads/master/cryptfs.h
0 lelong 0xd0b5b1c4 Android cryptfs footer
>4 leshort x \b, version: %d
>6 leshort x \b.%d
# Android Vdex format
# From https://android.googlesource.com/\
# platform/art/+/master/runtime/vdex_file.h
0 string vdex Android vdex file,
>4 string >000 verifier deps version: %s,
>8 string >000 dex section version: %s,
>12 lelong >0 number of dex files: %d,
>16 lelong >0 verifier deps size: %d
# Android Vdex format, dexfile is currently being updated
# by android system
# From https://android.googlesource.com/\
# platform/art/+/master/dex2oat/dex2oat.cc
0 string wdex Android vdex file, being processed by dex2oat,
>4 string >000 verifier deps version: %s,
>8 string >000 dex section version: %s,
>12 lelong >0 number of dex files: %d,
>16 lelong >0 verifier deps size: %d
# Disassembled DEX files
0 string/t .class\x20
>&0 regex/512 \^\\.super\x20L.*;$ disassembled Android DEX Java class (smali/baksmali)
!:ext smali
# Android ART (baseline) profile + metadata: baseline.prof, baseline.profm
# Reference: https://android.googlesource.com/platform/frameworks/support/\
# +/refs/heads/androidx-main/profileinstaller/profileinstaller/\
# src/main/java/androidx/profileinstaller/ProfileTranscoder.java
# Reference: https://android.googlesource.com/platform/frameworks/support/\
# +/refs/heads/androidx-main/profileinstaller/profileinstaller/\
# src/main/java/androidx/profileinstaller/ProfileVersion.java
0 string pro\x00
>0 regex pro\x000[0-9][0-9]\x00 Android ART profile
!:ext prof
>>4 string 001\x00 \b, version 001 N
>>4 string 005\x00 \b, version 005 O
>>4 string 009\x00 \b, version 009 O MR1
>>4 string 010\x00 \b, version 010 P
>>4 string 015\x00 \b, version 015 S
0 string prm\x00
>0 regex prm\x000[0-9][0-9]\x00 Android ART profile metadata
!:ext profm
>>4 string 001\x00 \b, version 001 N
>>4 string 002\x00 \b, version 002
# Android package resource table (ARSC): resources.arsc
# Reference: https://android.googlesource.com/platform/tools/base/\
# +/refs/heads/mirror-goog-studio-main/apkparser/binary-resources/\
# src/main/java/com/google/devrel/gmscore/tools/apk/arsc
# 00: resource table type = 0x0002 (2) + header size = 12 (2)
# 04: chunk size (4, skipped)
# 08: #packages (4)
0 ulelong 0x000c0002 Android package resource table (ARSC)
!:ext arsc
>8 ulelong !1 \b, %d packages
# 12: string pool type = 0x0001 (2) + header size = 28 (2)
# 16: chunk size (4, skipped)
# 20: #strings (4), #styles (4), flags (4)
>12 ulelong 0x001c0001
>>20 ulelong !0 \b, %d string(s)
>>24 ulelong !0 \b, %d style(s)
>>28 ulelong &1 \b, sorted
>>28 ulelong &256 \b, utf8
# extracted APK Signing Block
-16 string APK\x20Sig\x20Block\x2042 APK Signing Block
|
