mirror of
https://github.com/vivisect/vivisect
synced 2026-06-08 18:04:23 +00:00
James Gross
f638118fbd
Bump qt versions to get things working and installing on windows and manjaro and fix a missing var issue
380 lines
12 KiB
Python
380 lines
12 KiB
Python
import vstruct
|
|
from vstruct.primitives import *
|
|
from vstruct.defs.constants.elf import *
|
|
|
|
class Elf32(vstruct.VStruct):
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
self.e_ident = v_bytes(EI_NIDENT)
|
|
self.e_class = v_uint8()
|
|
self.e_data = v_uint8()
|
|
self.e_fileversion = v_uint8()
|
|
self.e_osabi = v_uint8()
|
|
self.e_abiversio = v_uint8()
|
|
self.e_pad = v_bytes(EI_PADLEN)
|
|
self.e_type = v_uint16(bigend=bigend)
|
|
self.e_machine = v_uint16(bigend=bigend)
|
|
self.e_version = v_uint32(bigend=bigend)
|
|
self.e_entry = v_uint32(bigend=bigend)
|
|
self.e_phoff = v_uint32(bigend=bigend)
|
|
self.e_shoff = v_uint32(bigend=bigend)
|
|
self.e_flags = v_uint32(bigend=bigend)
|
|
self.e_ehsize = v_uint16(bigend=bigend)
|
|
self.e_phentsize = v_uint16(bigend=bigend)
|
|
self.e_phnum = v_uint16(bigend=bigend)
|
|
self.e_shentsize = v_uint16(bigend=bigend)
|
|
self.e_shnum = v_uint16(bigend=bigend)
|
|
self.e_shstrndx = v_uint16(bigend=bigend)
|
|
|
|
class ElfSection:
|
|
def __init__(self):
|
|
self.name = ''
|
|
|
|
def setName(self, name):
|
|
self.name = name
|
|
|
|
def getName(self):
|
|
return self.name
|
|
|
|
def __repr__(self):
|
|
flags = [name for idx, name in sh_flags.items() if idx & self.sh_flags]
|
|
|
|
return 'Elf Sec: [%20s] @0x%.8x (%8d) [ent/size: %8d/%8d] [align: %8d] [%s]' % (
|
|
self.name,
|
|
self.sh_addr,
|
|
self.sh_offset,
|
|
self.sh_entsize,
|
|
self.sh_size,
|
|
self.sh_addralign,
|
|
'Flags: ' + ', '.join(flags))
|
|
|
|
class Elf32Section(ElfSection, vstruct.VStruct):
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
ElfSection.__init__(self)
|
|
self.sh_name = v_uint32(bigend=bigend)
|
|
self.sh_type = v_uint32(bigend=bigend)
|
|
self.sh_flags = v_uint32(bigend=bigend)
|
|
self.sh_addr = v_uint32(bigend=bigend)
|
|
self.sh_offset = v_uint32(bigend=bigend)
|
|
self.sh_size = v_uint32(bigend=bigend)
|
|
self.sh_link = v_uint32(bigend=bigend)
|
|
self.sh_info = v_uint32(bigend=bigend)
|
|
self.sh_addralign = v_uint32(bigend=bigend)
|
|
self.sh_entsize = v_uint32(bigend=bigend)
|
|
|
|
class ElfPheader:
|
|
def getTypeName(self):
|
|
return ph_types.get(self.p_type, "Unknown")
|
|
|
|
def __repr__(self):
|
|
return '[%35s] VMA: 0x%.8x offset: %8d memsize: %8d align: %8d (filesz: %8d) flags: %x' % (
|
|
self.getTypeName(),
|
|
self.p_vaddr,
|
|
self.p_offset,
|
|
self.p_memsz,
|
|
self.p_align,
|
|
self.p_filesz,
|
|
self.p_flags)
|
|
|
|
class Elf32Pheader(ElfPheader, vstruct.VStruct):
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
self.p_type = v_uint32(bigend=bigend)
|
|
self.p_offset = v_uint32(bigend=bigend)
|
|
self.p_vaddr = v_uint32(bigend=bigend)
|
|
self.p_paddr = v_uint32(bigend=bigend)
|
|
self.p_filesz = v_uint32(bigend=bigend)
|
|
self.p_memsz = v_uint32(bigend=bigend)
|
|
self.p_flags = v_uint32(bigend=bigend)
|
|
self.p_align = v_uint32(bigend=bigend)
|
|
|
|
class ElfReloc:
|
|
"""
|
|
Elf relocation entries consist mostly of "fixup" address which
|
|
are taken care of by the loader at runtime. Things like
|
|
GOT entries, PLT jmp codes etc all have an Elf relocation
|
|
entry.
|
|
"""
|
|
|
|
def __init__(self):
|
|
self.name = ""
|
|
|
|
def __repr__(self):
|
|
return "reloc: @%s %d %s" % (hex(self.r_offset), self.getType(), self.getName())
|
|
|
|
def setName(self, name):
|
|
self.name = name
|
|
|
|
def getName(self):
|
|
return self.name
|
|
|
|
def getType(self):
|
|
return self.r_info & 0xff
|
|
|
|
class Elf32Reloc(ElfReloc, vstruct.VStruct):
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
ElfReloc.__init__(self)
|
|
self.r_offset = v_ptr32(bigend=bigend)
|
|
self.r_info = v_uint32(bigend=bigend)
|
|
|
|
def __eq__(self, other):
|
|
if self.name != other.name:
|
|
return False
|
|
if self.r_offset != other.r_offset:
|
|
return False
|
|
if self.r_info != other.r_info:
|
|
return False
|
|
return True
|
|
|
|
def getSymTabIndex(self):
|
|
return self.r_info >> 8
|
|
|
|
class Elf32Reloca(Elf32Reloc):
|
|
def __init__(self, bigend=False):
|
|
Elf32Reloc.__init__(self)
|
|
self.r_addend = v_int32(bigend=bigend)
|
|
|
|
def __eq__(self, other):
|
|
if self.name != other.name:
|
|
return False
|
|
if self.r_offset != other.r_offset:
|
|
return False
|
|
if self.r_info != other.r_info:
|
|
return False
|
|
if self.r_addend != other.r_addend:
|
|
return False
|
|
return True
|
|
|
|
class ElfSymbol:
|
|
def __init__(self):
|
|
self.name = ""
|
|
|
|
def getInfoType(self):
|
|
return self.st_info & 0xf
|
|
|
|
def getInfoBind(self):
|
|
return self.st_info >> 4
|
|
|
|
def getVisibility(self):
|
|
return self.st_other & 0x3
|
|
|
|
def __cmp__(self, other):
|
|
if self.st_value > other.st_value:
|
|
return 1
|
|
return -1
|
|
|
|
def setName(self, name):
|
|
self.name = name
|
|
|
|
def getName(self):
|
|
return self.name
|
|
|
|
def __repr__(self):
|
|
return "0x%.8x %d %s" % (self.st_value, self.st_size, self.name)
|
|
|
|
class Elf32Symbol(ElfSymbol, vstruct.VStruct):
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
ElfSymbol.__init__(self)
|
|
self.st_name = v_uint32(bigend=bigend)
|
|
self.st_value = v_uint32(bigend=bigend)
|
|
self.st_size = v_uint32(bigend=bigend)
|
|
self.st_info = v_uint8()
|
|
self.st_other = v_uint8()
|
|
self.st_shndx = v_uint16(bigend=bigend)
|
|
|
|
def __eq__(self, other):
|
|
if self.st_value != other.st_value:
|
|
return False
|
|
if self.st_name != other.st_name:
|
|
return False
|
|
if self.st_size != other.st_size:
|
|
return False
|
|
if self.st_info != other.st_info:
|
|
return False
|
|
if self.st_other != other.st_other:
|
|
return False
|
|
if self.st_shndx != other.st_shndx:
|
|
return False
|
|
return True
|
|
|
|
class ElfDynamic:
|
|
"""
|
|
An object to represent an Elf dynamic entry.
|
|
(linker/loader directives)
|
|
"""
|
|
|
|
def __init__(self):
|
|
self.name = ""
|
|
|
|
def __repr__(self):
|
|
name = self.getName()
|
|
if not name:
|
|
name = hex(self.d_value)
|
|
return "%s %s" % (name, self.getTypeName())
|
|
|
|
def getName(self):
|
|
return self.name
|
|
|
|
def setName(self, name):
|
|
self.name = name
|
|
|
|
def getTypeName(self):
|
|
return dt_types.get(self.d_tag, "Unknown: %s" % hex(self.d_tag))
|
|
|
|
class Elf32Dynamic(ElfDynamic, vstruct.VStruct):
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
ElfDynamic.__init__(self)
|
|
self.d_tag = v_uint32(bigend=bigend)
|
|
self.d_value = v_uint32(bigend=bigend)
|
|
|
|
def __eq__(self, other):
|
|
if self.d_tag != other.d_tag:
|
|
return False
|
|
if self.d_value != other.d_value:
|
|
return False
|
|
return True
|
|
|
|
class Elf64(vstruct.VStruct):
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
self.e_ident = v_bytes(EI_NIDENT)
|
|
self.e_class = v_uint8()
|
|
self.e_data = v_uint8()
|
|
self.e_fileversion = v_uint8()
|
|
self.e_osabi = v_uint8()
|
|
self.e_abiversio = v_uint8()
|
|
self.e_pad = v_bytes(EI_PADLEN)
|
|
self.e_type = v_uint16(bigend=bigend)
|
|
self.e_machine = v_uint16(bigend=bigend)
|
|
self.e_version = v_uint32(bigend=bigend)
|
|
self.e_entry = v_uint64(bigend=bigend)
|
|
self.e_phoff = v_uint64(bigend=bigend)
|
|
self.e_shoff = v_uint64(bigend=bigend)
|
|
self.e_flags = v_uint32(bigend=bigend)
|
|
self.e_ehsize = v_uint16(bigend=bigend)
|
|
self.e_phentsize = v_uint16(bigend=bigend)
|
|
self.e_phnum = v_uint16(bigend=bigend)
|
|
self.e_shentsize = v_uint16(bigend=bigend)
|
|
self.e_shnum = v_uint16(bigend=bigend)
|
|
self.e_shstrndx = v_uint16(bigend=bigend)
|
|
|
|
class Elf64Section(ElfSection, vstruct.VStruct):
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
ElfSection.__init__(self)
|
|
self.sh_name = v_uint32(bigend=bigend)
|
|
self.sh_type = v_uint32(bigend=bigend)
|
|
self.sh_flags = v_uint64(bigend=bigend)
|
|
self.sh_addr = v_uint64(bigend=bigend)
|
|
self.sh_offset = v_uint64(bigend=bigend)
|
|
self.sh_size = v_uint64(bigend=bigend)
|
|
self.sh_link = v_uint32(bigend=bigend)
|
|
self.sh_info = v_uint32(bigend=bigend)
|
|
self.sh_addralign = v_uint64(bigend=bigend)
|
|
self.sh_entsize = v_uint64(bigend=bigend)
|
|
|
|
class Elf64Pheader(ElfPheader, vstruct.VStruct):
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
self.p_type = v_uint32(bigend=bigend)
|
|
self.p_flags = v_uint32(bigend=bigend)
|
|
self.p_offset = v_uint64(bigend=bigend)
|
|
self.p_vaddr = v_uint64(bigend=bigend)
|
|
self.p_paddr = v_uint64(bigend=bigend)
|
|
self.p_filesz = v_uint64(bigend=bigend)
|
|
self.p_memsz = v_uint64(bigend=bigend)
|
|
self.p_align = v_uint64(bigend=bigend)
|
|
|
|
class Elf64Reloc(ElfReloc, vstruct.VStruct):
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
ElfReloc.__init__(self)
|
|
self.r_offset = v_ptr64(bigend=bigend)
|
|
self.r_info = v_uint64(bigend=bigend)
|
|
|
|
def __eq__(self, other):
|
|
if self.name != other.name:
|
|
return False
|
|
if self.r_offset != other.r_offset:
|
|
return False
|
|
if self.r_info != other.r_info:
|
|
return False
|
|
return True
|
|
|
|
def getSymTabIndex(self):
|
|
return self.r_info >> 32
|
|
|
|
class Elf64Reloca(Elf64Reloc):
|
|
def __init__(self, bigend=False):
|
|
Elf64Reloc.__init__(self)
|
|
self.r_addend = v_int64(bigend=bigend)
|
|
|
|
def __eq__(self, other):
|
|
if self.name != other.name:
|
|
return False
|
|
if self.r_offset != other.r_offset:
|
|
return False
|
|
if self.r_info != other.r_info:
|
|
return False
|
|
if self.r_addend != other.r_addend:
|
|
return False
|
|
return True
|
|
|
|
class Elf64Symbol(ElfSymbol, vstruct.VStruct):
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
ElfSymbol.__init__(self)
|
|
self.st_name = v_uint32(bigend=bigend)
|
|
self.st_info = v_uint8()
|
|
self.st_other = v_uint8()
|
|
self.st_shndx = v_uint16(bigend=bigend)
|
|
self.st_value = v_uint64(bigend=bigend)
|
|
self.st_size = v_uint64(bigend=bigend)
|
|
|
|
def __eq__(self, other):
|
|
if self.st_value != other.st_value:
|
|
return False
|
|
if self.st_name != other.st_name:
|
|
return False
|
|
if self.st_size != other.st_size:
|
|
return False
|
|
if self.st_info != other.st_info:
|
|
return False
|
|
if self.st_other != other.st_other:
|
|
return False
|
|
if self.st_shndx != other.st_shndx:
|
|
return False
|
|
return True
|
|
|
|
class Elf64Dynamic(Elf32Dynamic):
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
ElfDynamic.__init__(self)
|
|
self.d_tag = v_uint64(bigend=bigend)
|
|
self.d_value = v_uint64(bigend=bigend)
|
|
|
|
class ElfNote(vstruct.VStruct):
|
|
|
|
def __init__(self, bigend=False):
|
|
vstruct.VStruct.__init__(self)
|
|
self.namesz = v_uint32(bigend=bigend)
|
|
self.descsz = v_uint32(bigend=bigend)
|
|
self.ntype = v_uint32(bigend=bigend)
|
|
self.name = v_bytes()
|
|
self.desc = vstruct.VArray()
|
|
|
|
def pcb_namesz(self):
|
|
# padded to 4 byte alignment
|
|
namesz = ((self.namesz +3) >> 2) << 2
|
|
self['name'].vsSetLength( namesz )
|
|
|
|
def pcb_descsz(self):
|
|
# padded to 4 byte alignment
|
|
descct = ((self.descsz +3) >> 2)
|
|
elems = [ v_uint32() for i in range(descct) ]
|
|
self.desc = vstruct.VArray(elems=elems)
|