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feat(handler): add support for non-standard squashfs v2 signature. #639

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feat(handler): add support for non-standard squashfs v2 signature. #639

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1 change: 1 addition & 0 deletions unblob/handlers/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,7 @@
ntfs.NTFSHandler,
romfs.RomFSFSHandler,
squashfs.SquashFSv2Handler,
squashfs.SquashFSv2NonStandardHandler,
squashfs.SquashFSv3Handler,
squashfs.SquashFSv3DDWRTHandler,
squashfs.SquashFSv3BroadcomHandler,
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19 changes: 19 additions & 0 deletions unblob/handlers/filesystem/squashfs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -115,6 +115,25 @@ class SquashFSv2Handler(_SquashFSBase):
HEADER_STRUCT = "squashfs2_super_block_t"


class SquashFSv2NonStandardHandler(SquashFSv2Handler):
NAME = "squashfs_v2_nonstandard"

BIG_ENDIAN_MAGIC = 0x73_71_6C_7A

EXTRACTOR = SquashFSExtractor(0x73_71_6C_7A)

PATTERNS = [
HexString(
"""
// 00000000 73 71 6c 7a 00 00 03 3f 00 21 99 d7 00 21 99 c7 |sqlz...?........|
// 00000010 00 00 00 00 00 21 71 7c 00 21 82 89 00 02 00 01 |.!...!.......!q.|
// squashfs_v2_magic_non_standard_be
73 71 6c 7a [24] 00 02
"""
),
]


class SquashFSv3Handler(_SquashFSBase):
NAME = "squashfs_v3"

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