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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
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