def getFunctionAddress(name):
"""
Looks for the function 'name' in the PLT of a binary
Returns a pair (name, address) as (str, int)
"""
global binary_name
global binary_ELF
if (not Arch.currentIsELF()):
return (None, None)
# Get function in relocatins
relasec_name = '.rela.plt'
relasec = binary_ELF.get_section_by_name(relasec_name)
if not isinstance(relasec, RelocationSection):
print(' ERROR DEBUG The file has no %s section' % relasec_name)
relasec_addr = relasec.header['sh_addr']
symbols = binary_ELF.get_section(relasec.header['sh_link'])
if (not isinstance(symbols, NullSection)):
for reloc in relasec.iter_relocations():
if (symbols.get_symbol(reloc['r_info_sym']).name == name):
return (name, reloc['r_offset'] + relasec_addr)
# Get function from symbol table sections
for symsec in getSymbolSections():
function = symsec.get_symbol_by_name(name)
if (function):
return (name, function[0]['st_value'])
return (None, None)
def initScanner(filename):
global binary_name
global binary_ELF
binary_name = filename
if (Arch.currentIsELF()):
binary_ELF = ElfParser(binary_name)
else:
binary_ELF = None
def initScanner(filename):
global binary_name
global binary_ELF
binary_name = filename
f = open(binary_name, 'rb')
if (Arch.currentIsELF()):
binary_ELF = ELFFile(f)
else:
binary_ELF = None
def getFunctionAddress(name):
"""
Looks for the function 'name' in the PLT of a binary
Returns a pair (name, address) as (str, int)
"""
global binary_name
global binary_ELF
if (not Arch.currentIsELF()):
return (None, None)
for rela in binary_ELF.jumpRelocationEntries:
if (rela.symbol.symbolName == name):
return (rela.symbol.symbolName, rela.r_offset)
return (None, None)
