yaml2obj¶
yaml2obj takes a YAML description of an object file and converts it to a binary file.
$ yaml2obj input-file
Outputs the binary to stdout.
COFF Syntax¶
Here’s a sample COFF file.
header:
Machine: IMAGE_FILE_MACHINE_I386 # (0x14C)
sections:
- Name: .text
Characteristics: [ IMAGE_SCN_CNT_CODE
, IMAGE_SCN_ALIGN_16BYTES
, IMAGE_SCN_MEM_EXECUTE
, IMAGE_SCN_MEM_READ
] # 0x60500020
SectionData:
"\x83\xEC\x0C\xC7\x44\x24\x08\x00\x00\x00\x00\xC7\x04\x24\x00\x00\x00\x00\xE8\x00\x00\x00\x00\xE8\x00\x00\x00\x00\x8B\x44\x24\x08\x83\xC4\x0C\xC3" # |....D$.......$...............D$.....|
symbols:
- Name: .text
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL # (0)
ComplexType: IMAGE_SYM_DTYPE_NULL # (0)
StorageClass: IMAGE_SYM_CLASS_STATIC # (3)
NumberOfAuxSymbols: 1
AuxiliaryData:
"\x24\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00" # |$.................|
- Name: _main
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL # (0)
ComplexType: IMAGE_SYM_DTYPE_NULL # (0)
StorageClass: IMAGE_SYM_CLASS_EXTERNAL # (2)
Here’s a simplified Kwalify schema with an extension to allow alternate types.
type: map
mapping:
header:
type: map
mapping:
Machine: [ {type: str, enum:
[ IMAGE_FILE_MACHINE_UNKNOWN
, IMAGE_FILE_MACHINE_AM33
, IMAGE_FILE_MACHINE_AMD64
, IMAGE_FILE_MACHINE_ARM
, IMAGE_FILE_MACHINE_ARMNT
, IMAGE_FILE_MACHINE_ARM64
, IMAGE_FILE_MACHINE_EBC
, IMAGE_FILE_MACHINE_I386
, IMAGE_FILE_MACHINE_IA64
, IMAGE_FILE_MACHINE_M32R
, IMAGE_FILE_MACHINE_MIPS16
, IMAGE_FILE_MACHINE_MIPSFPU
, IMAGE_FILE_MACHINE_MIPSFPU16
, IMAGE_FILE_MACHINE_POWERPC
, IMAGE_FILE_MACHINE_POWERPCFP
, IMAGE_FILE_MACHINE_R4000
, IMAGE_FILE_MACHINE_SH3
, IMAGE_FILE_MACHINE_SH3DSP
, IMAGE_FILE_MACHINE_SH4
, IMAGE_FILE_MACHINE_SH5
, IMAGE_FILE_MACHINE_THUMB
, IMAGE_FILE_MACHINE_WCEMIPSV2
]}
, {type: int}
]
Characteristics:
- type: seq
sequence:
- type: str
enum: [ IMAGE_FILE_RELOCS_STRIPPED
, IMAGE_FILE_EXECUTABLE_IMAGE
, IMAGE_FILE_LINE_NUMS_STRIPPED
, IMAGE_FILE_LOCAL_SYMS_STRIPPED
, IMAGE_FILE_AGGRESSIVE_WS_TRIM
, IMAGE_FILE_LARGE_ADDRESS_AWARE
, IMAGE_FILE_BYTES_REVERSED_LO
, IMAGE_FILE_32BIT_MACHINE
, IMAGE_FILE_DEBUG_STRIPPED
, IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP
, IMAGE_FILE_NET_RUN_FROM_SWAP
, IMAGE_FILE_SYSTEM
, IMAGE_FILE_DLL
, IMAGE_FILE_UP_SYSTEM_ONLY
, IMAGE_FILE_BYTES_REVERSED_HI
]
- type: int
sections:
type: seq
sequence:
- type: map
mapping:
Name: {type: str}
Characteristics:
- type: seq
sequence:
- type: str
enum: [ IMAGE_SCN_TYPE_NO_PAD
, IMAGE_SCN_CNT_CODE
, IMAGE_SCN_CNT_INITIALIZED_DATA
, IMAGE_SCN_CNT_UNINITIALIZED_DATA
, IMAGE_SCN_LNK_OTHER
, IMAGE_SCN_LNK_INFO
, IMAGE_SCN_LNK_REMOVE
, IMAGE_SCN_LNK_COMDAT
, IMAGE_SCN_GPREL
, IMAGE_SCN_MEM_PURGEABLE
, IMAGE_SCN_MEM_16BIT
, IMAGE_SCN_MEM_LOCKED
, IMAGE_SCN_MEM_PRELOAD
, IMAGE_SCN_ALIGN_1BYTES
, IMAGE_SCN_ALIGN_2BYTES
, IMAGE_SCN_ALIGN_4BYTES
, IMAGE_SCN_ALIGN_8BYTES
, IMAGE_SCN_ALIGN_16BYTES
, IMAGE_SCN_ALIGN_32BYTES
, IMAGE_SCN_ALIGN_64BYTES
, IMAGE_SCN_ALIGN_128BYTES
, IMAGE_SCN_ALIGN_256BYTES
, IMAGE_SCN_ALIGN_512BYTES
, IMAGE_SCN_ALIGN_1024BYTES
, IMAGE_SCN_ALIGN_2048BYTES
, IMAGE_SCN_ALIGN_4096BYTES
, IMAGE_SCN_ALIGN_8192BYTES
, IMAGE_SCN_LNK_NRELOC_OVFL
, IMAGE_SCN_MEM_DISCARDABLE
, IMAGE_SCN_MEM_NOT_CACHED
, IMAGE_SCN_MEM_NOT_PAGED
, IMAGE_SCN_MEM_SHARED
, IMAGE_SCN_MEM_EXECUTE
, IMAGE_SCN_MEM_READ
, IMAGE_SCN_MEM_WRITE
]
- type: int
SectionData: {type: str}
symbols:
type: seq
sequence:
- type: map
mapping:
Name: {type: str}
Value: {type: int}
SectionNumber: {type: int}
SimpleType: [ {type: str, enum: [ IMAGE_SYM_TYPE_NULL
, IMAGE_SYM_TYPE_VOID
, IMAGE_SYM_TYPE_CHAR
, IMAGE_SYM_TYPE_SHORT
, IMAGE_SYM_TYPE_INT
, IMAGE_SYM_TYPE_LONG
, IMAGE_SYM_TYPE_FLOAT
, IMAGE_SYM_TYPE_DOUBLE
, IMAGE_SYM_TYPE_STRUCT
, IMAGE_SYM_TYPE_UNION
, IMAGE_SYM_TYPE_ENUM
, IMAGE_SYM_TYPE_MOE
, IMAGE_SYM_TYPE_BYTE
, IMAGE_SYM_TYPE_WORD
, IMAGE_SYM_TYPE_UINT
, IMAGE_SYM_TYPE_DWORD
]}
, {type: int}
]
ComplexType: [ {type: str, enum: [ IMAGE_SYM_DTYPE_NULL
, IMAGE_SYM_DTYPE_POINTER
, IMAGE_SYM_DTYPE_FUNCTION
, IMAGE_SYM_DTYPE_ARRAY
]}
, {type: int}
]
StorageClass: [ {type: str, enum:
[ IMAGE_SYM_CLASS_END_OF_FUNCTION
, IMAGE_SYM_CLASS_NULL
, IMAGE_SYM_CLASS_AUTOMATIC
, IMAGE_SYM_CLASS_EXTERNAL
, IMAGE_SYM_CLASS_STATIC
, IMAGE_SYM_CLASS_REGISTER
, IMAGE_SYM_CLASS_EXTERNAL_DEF
, IMAGE_SYM_CLASS_LABEL
, IMAGE_SYM_CLASS_UNDEFINED_LABEL
, IMAGE_SYM_CLASS_MEMBER_OF_STRUCT
, IMAGE_SYM_CLASS_ARGUMENT
, IMAGE_SYM_CLASS_STRUCT_TAG
, IMAGE_SYM_CLASS_MEMBER_OF_UNION
, IMAGE_SYM_CLASS_UNION_TAG
, IMAGE_SYM_CLASS_TYPE_DEFINITION
, IMAGE_SYM_CLASS_UNDEFINED_STATIC
, IMAGE_SYM_CLASS_ENUM_TAG
, IMAGE_SYM_CLASS_MEMBER_OF_ENUM
, IMAGE_SYM_CLASS_REGISTER_PARAM
, IMAGE_SYM_CLASS_BIT_FIELD
, IMAGE_SYM_CLASS_BLOCK
, IMAGE_SYM_CLASS_FUNCTION
, IMAGE_SYM_CLASS_END_OF_STRUCT
, IMAGE_SYM_CLASS_FILE
, IMAGE_SYM_CLASS_SECTION
, IMAGE_SYM_CLASS_WEAK_EXTERNAL
, IMAGE_SYM_CLASS_CLR_TOKEN
]}
, {type: int}
]