2023-08-06 16:12:15 +00:00
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#------------------------------------------------------------
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2023-08-08 11:16:24 +00:00
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# $File: android,v 1.24 2023/02/20 16:51:59 christos Exp $
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2023-08-06 16:12:15 +00:00
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# Various android related magic entries
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#------------------------------------------------------------
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# Dalvik .dex format. http://retrodev.com/android/dexformat.html
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# From <mkf@google.com> "Mike Fleming"
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# Fixed to avoid regexec 17 errors on some dex files
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# From <diff@lookout.com> "Tim Strazzere"
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0 string dex\n
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>0 regex dex\n[0-9]{2}\0 Dalvik dex file
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>4 string >000 version %s
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0 string dey\n
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>0 regex dey\n[0-9]{2}\0 Dalvik dex file (optimized for host)
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>4 string >000 version %s
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# Android bootimg format
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# From https://android.googlesource.com/\
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# platform/system/core/+/master/mkbootimg/bootimg.h
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# https://github.com/djrbliss/loki/blob/master/loki.h#L43
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0 string ANDROID! Android bootimg
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>1024 string LOKI \b, LOKI'd
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>>1028 lelong 0 \b (boot)
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>>1028 lelong 1 \b (recovery)
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>8 lelong >0 \b, kernel
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>>12 lelong >0 \b (%#x)
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>16 lelong >0 \b, ramdisk
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>>20 lelong >0 \b (%#x)
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>24 lelong >0 \b, second stage
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>>28 lelong >0 \b (%#x)
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>36 lelong >0 \b, page size: %d
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>38 string >0 \b, name: %s
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>64 string >0 \b, cmdline (%s)
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# Android Backup archive
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# From: Ariel Shkedi
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# Update: Joerg Jenderek
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# URL: https://github.com/android/platform_frameworks_base/blob/\
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# 0bacfd2ba68d21a68a3df345b830bc2a1e515b5a/services/java/com/\
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# android/server/BackupManagerService.java#L2367
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# Reference: https://sourceforge.net/projects/adbextractor/
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# android-backup-extractor/perl/backupencrypt.pl
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# Note: only unix line feeds "\n" found
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# After the header comes a tar file
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# If compressed, the entire tar file is compressed with JAVA deflate
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#
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# Include the version number hardcoded with the magic string to avoid
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# false positives
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0 string/b ANDROID\ BACKUP\n Android Backup
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# maybe look for some more characteristics like linefeed '\n' or version
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#>16 string \n
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# No mime-type defined officially
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!:mime application/x-google-ab
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!:ext ab
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# on 2nd line version (often 1, 2 on kitkat 4.4.3+, 4 on 7.1.2)
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>15 string >\0 \b, version %s
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# "1" on 3rd line means compressed
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>17 string 0\n \b, Not-Compressed
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>17 string 1\n \b, Compressed
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# The 4th line is encryption "none" or "AES-256"
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# any string as long as it's not the word none (which is matched below)
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>19 string none\n \b, Not-Encrypted
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# look for backup content after line with encryption info
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#>>19 search/7 \n
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# data part after header for not encrypted Android Backup
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#>>>&0 ubequad x \b, content %#16.16llx...
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# look for zlib compressed by ./compress after message with 1 space at end
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#>>>&0 indirect x \b; contains
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# look for tar archive block by ./archive for package name manifest
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>>288 string ustar \b; contains
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>>>31 use tar-file
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# look for zip/jar archive by ./archive ./zip after message with 1 space at end
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#>>2079 search/1025/s PK\003\004 \b; contains
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#>>>&0 indirect x
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>19 string !none
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>>19 regex/1l \^([^n\n]|n[^o]|no[^n]|non[^e]|none.+).* \b, Encrypted (%s)
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# Commented out because they don't seem useful to print
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# (but they are part of the header - the tar file comes after them):
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# The 5th line is User Password Salt (128 Hex)
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# string length too high with standard src configuration
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#>>>&1 string >\0 \b, PASSWORD salt: "%-128.128s"
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#>>>&1 regex/1l .* \b, Password salt: %s
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# The 6th line is Master Key Checksum Salt (128 Hex)
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#>>>>&1 regex/1l .* \b, Master salt: %s
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# The 7th line is Number of PBDKF2 Rounds (10000)
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#>>>>>&1 regex/1l .* \b, PBKDF2 rounds: %s
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# The 8th line is User key Initialization Vector (IV) (32 Hex)
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#>>>>>>&1 regex/1l .* \b, IV: %s
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#>>>>>>&1 regex/1l .* \b, IV: %s
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# The 9th line is Master IV+Key+Checksum (192 Hex)
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#>>>>>>>&1 regex/1l .* \b, Key: %s
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# look for new line separator char after line number 9
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#>>>0x204 ubyte 0x0a NL found
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#>>>>&1 ubequad x \b, Content magic %16.16llx
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# *.pit files by Joerg Jenderek
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# https://forum.xda-developers.com/showthread.php?p=9122369
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# https://forum.xda-developers.com/showthread.php?t=816449
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# Partition Information Table for Samsung's smartphone with Android
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# used by flash software Odin
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0 ulelong 0x12349876
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# 1st pit entry marker
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>0x01C ulequad&0xFFFFFFFCFFFFFFFC =0x0000000000000000
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# minimal 13 and maximal 18 PIT entries found
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>>4 ulelong <128 Partition Information Table for Samsung smartphone
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>>>4 ulelong x \b, %d entries
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# 1. pit entry
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>>>4 ulelong >0 \b; #1
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>>>0x01C use PIT-entry
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>>>4 ulelong >1 \b; #2
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>>>0x0A0 use PIT-entry
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>>>4 ulelong >2 \b; #3
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>>>0x124 use PIT-entry
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>>>4 ulelong >3 \b; #4
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>>>0x1A8 use PIT-entry
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>>>4 ulelong >4 \b; #5
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>>>0x22C use PIT-entry
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>>>4 ulelong >5 \b; #6
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>>>0x2B0 use PIT-entry
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>>>4 ulelong >6 \b; #7
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>>>0x334 use PIT-entry
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>>>4 ulelong >7 \b; #8
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>>>0x3B8 use PIT-entry
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>>>4 ulelong >8 \b; #9
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>>>0x43C use PIT-entry
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>>>4 ulelong >9 \b; #10
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>>>0x4C0 use PIT-entry
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>>>4 ulelong >10 \b; #11
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>>>0x544 use PIT-entry
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>>>4 ulelong >11 \b; #12
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>>>0x5C8 use PIT-entry
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>>>4 ulelong >12 \b; #13
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>>>>0x64C use PIT-entry
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# 14. pit entry
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>>>4 ulelong >13 \b; #14
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>>>>0x6D0 use PIT-entry
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>>>4 ulelong >14 \b; #15
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>>>0x754 use PIT-entry
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>>>4 ulelong >15 \b; #16
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>>>0x7D8 use PIT-entry
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>>>4 ulelong >16 \b; #17
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>>>0x85C use PIT-entry
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# 18. pit entry
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>>>4 ulelong >17 \b; #18
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>>>0x8E0 use PIT-entry
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0 name PIT-entry
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# garbage value implies end of pit entries
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>0x00 ulequad&0xFFFFFFFCFFFFFFFC =0x0000000000000000
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# skip empty partition name
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>>0x24 ubyte !0
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# partition name
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>>>0x24 string >\0 %-.32s
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# flags
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>>>0x0C ulelong&0x00000002 2 \b+RW
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# partition ID:
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# 0~IPL,MOVINAND,GANG;1~PIT,GPT;2~HIDDEN;3~SBL,HIDDEN;4~SBL2,HIDDEN;5~BOOT;6~kernel,RECOVER,misc;7~RECOVER
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# ;11~MODEM;20~efs;21~PARAM;22~FACTORY,SYSTEM;23~DBDATAFS,USERDATA;24~CACHE;80~BOOTLOADER;81~TZSW
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>>>0x08 ulelong x (%#x)
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# filename
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>>>0x44 string >\0 "%-.64s"
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#>>>0x18 ulelong >0
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# blocksize in 512 byte units ?
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#>>>>0x18 ulelong x \b, %db
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# partition size in blocks ?
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#>>>>0x22 ulelong x \b*%d
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# Android sparse img format
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# From https://android.googlesource.com/\
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# platform/system/core/+/master/libsparse/sparse_format.h
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0 lelong 0xed26ff3a Android sparse image
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>4 leshort x \b, version: %d
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>6 leshort x \b.%d
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>16 lelong x \b, Total of %d
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>12 lelong x \b %d-byte output blocks in
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>20 lelong x \b %d input chunks.
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# Android binary XML magic
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# In include/androidfw/ResourceTypes.h:
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# RES_XML_TYPE = 0x0003 followed by the size of the header (ResXMLTree_header),
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# which is 8 bytes (2 bytes type + 2 bytes header size + 4 bytes size).
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2023-08-08 11:16:24 +00:00
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# The strength is increased to avoid misidentifying as Targa image data
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2023-08-06 16:12:15 +00:00
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0 lelong 0x00080003 Android binary XML
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2023-08-08 11:16:24 +00:00
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!:strength +1
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2023-08-06 16:12:15 +00:00
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# Android cryptfs footer
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# From https://android.googlesource.com/\
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# platform/system/vold/+/refs/heads/master/cryptfs.h
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0 lelong 0xd0b5b1c4 Android cryptfs footer
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>4 leshort x \b, version: %d
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>6 leshort x \b.%d
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# Android Vdex format
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# From https://android.googlesource.com/\
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# platform/art/+/master/runtime/vdex_file.h
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0 string vdex Android vdex file,
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>4 string >000 verifier deps version: %s,
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>8 string >000 dex section version: %s,
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>12 lelong >0 number of dex files: %d,
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>16 lelong >0 verifier deps size: %d
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# Android Vdex format, dexfile is currently being updated
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# by android system
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# From https://android.googlesource.com/\
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# platform/art/+/master/dex2oat/dex2oat.cc
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0 string wdex Android vdex file, being processed by dex2oat,
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>4 string >000 verifier deps version: %s,
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>8 string >000 dex section version: %s,
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>12 lelong >0 number of dex files: %d,
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>16 lelong >0 verifier deps size: %d
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2023-08-08 11:16:24 +00:00
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# Disassembled DEX files
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0 string/t .class\x20
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>&0 regex/512 \^\\.super\x20L.*;$ disassembled Android DEX Java class (smali/baksmali)
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!:ext smali
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# Android ART (baseline) profile + metadata: baseline.prof, baseline.profm
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# Reference: https://android.googlesource.com/platform/frameworks/support/\
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# +/refs/heads/androidx-main/profileinstaller/profileinstaller/\
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# src/main/java/androidx/profileinstaller/ProfileTranscoder.java
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# Reference: https://android.googlesource.com/platform/frameworks/support/\
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# +/refs/heads/androidx-main/profileinstaller/profileinstaller/\
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# src/main/java/androidx/profileinstaller/ProfileVersion.java
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0 string pro\x00
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>0 regex pro\x000[0-9][0-9]\x00 Android ART profile
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!:ext prof
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>>4 string 001\x00 \b, version 001 N
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>>4 string 005\x00 \b, version 005 O
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>>4 string 009\x00 \b, version 009 O MR1
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>>4 string 010\x00 \b, version 010 P
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>>4 string 015\x00 \b, version 015 S
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0 string prm\x00
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>0 regex prm\x000[0-9][0-9]\x00 Android ART profile metadata
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!:ext profm
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>>4 string 001\x00 \b, version 001 N
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>>4 string 002\x00 \b, version 002
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# Android package resource table (ARSC): resources.arsc
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# Reference: https://android.googlesource.com/platform/tools/base/\
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# +/refs/heads/mirror-goog-studio-main/apkparser/binary-resources/\
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# src/main/java/com/google/devrel/gmscore/tools/apk/arsc
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# 00: resource table type = 0x0002 (2) + header size = 12 (2)
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# 04: chunk size (4, skipped)
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# 08: #packages (4)
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0 ulelong 0x000c0002 Android package resource table (ARSC)
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!:ext arsc
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>8 ulelong !1 \b, %d packages
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# 12: string pool type = 0x0001 (2) + header size = 28 (2)
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# 16: chunk size (4, skipped)
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# 20: #strings (4), #styles (4), flags (4)
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>12 ulelong 0x001c0001
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>>20 ulelong !0 \b, %d string(s)
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>>24 ulelong !0 \b, %d style(s)
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>>28 ulelong &1 \b, sorted
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>>28 ulelong &256 \b, utf8
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# extracted APK Signing Block
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-16 string APK\x20Sig\x20Block\x2042 APK Signing Block
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