def decode_strings(vw,
decoding_functions_candidates,
min_length,
no_filter=False):
"""
FLOSS string decoding algorithm
:param vw: vivisect workspace
:param decoding_functions_candidates: identification manager
:param min_length: minimum string length
:param no_filter: do not filter decoded strings
:return: list of decoded strings ([DecodedString])
"""
decoded_strings = []
function_index = viv_utils.InstructionFunctionIndex(vw)
# TODO pass function list instead of identification manager
for fva, _ in decoding_functions_candidates.get_top_candidate_functions(
10):
for ctx in string_decoder.extract_decoding_contexts(vw, fva):
for delta in string_decoder.emulate_decoding_routine(
vw, function_index, fva, ctx):
for delta_bytes in string_decoder.extract_delta_bytes(
delta, ctx.decoded_at_va, fva):
for decoded_string in string_decoder.extract_strings(
delta_bytes, min_length, no_filter):
decoded_strings.append(decoded_string)
return decoded_strings
def decode_strings(vw, function_index, decoding_functions_candidates):
"""
FLOSS string decoding algorithm
:param vw: vivisect workspace
:param function_index: function data
:param decoding_functions_candidates: identification manager
:return: list of decoded strings ([DecodedString])
"""
decoded_strings = []
# TODO pass function list instead of identification manager
for fva, _ in decoding_functions_candidates.get_top_candidate_functions(10):
for ctx in string_decoder.extract_decoding_contexts(vw, fva):
for delta in string_decoder.emulate_decoding_routine(vw, function_index, fva, ctx):
for delta_bytes in string_decoder.extract_delta_bytes(delta, ctx.decoded_at_va, fva):
for decoded_string in string_decoder.extract_strings(delta_bytes):
decoded_strings.append(decoded_string)
return decoded_strings
def decode_strings(vw, function_index, decoding_functions_candidates):
"""
FLOSS string decoding algorithm
:param vw: vivisect workspace
:param function_index: function data
:param decoding_functions_candidates: identification manager
:return: list of decoded strings ([DecodedString])
"""
decoded_strings = []
# TODO pass function list instead of identification manager
for fva, _ in decoding_functions_candidates.get_top_candidate_functions(10):
for ctx in string_decoder.extract_decoding_contexts(vw, fva):
for delta in string_decoder.emulate_decoding_routine(vw, function_index, fva, ctx):
for delta_bytes in string_decoder.extract_delta_bytes(delta, ctx.decoded_at_va, fva):
for decoded_string in string_decoder.extract_strings(delta_bytes):
decoded_strings.append(decoded_string)
return decoded_strings
def decode_strings(vw, decoding_functions_candidates, min_length, no_filter=False):
"""
FLOSS string decoding algorithm
:param vw: vivisect workspace
:param decoding_functions_candidates: identification manager
:param min_length: minimum string length
:param no_filter: do not filter decoded strings
:return: list of decoded strings ([DecodedString])
"""
decoded_strings = []
function_index = viv_utils.InstructionFunctionIndex(vw)
# TODO pass function list instead of identification manager
for fva, _ in decoding_functions_candidates.get_top_candidate_functions(10):
for ctx in string_decoder.extract_decoding_contexts(vw, fva):
for delta in string_decoder.emulate_decoding_routine(vw, function_index, fva, ctx):
for delta_bytes in string_decoder.extract_delta_bytes(delta, ctx.decoded_at_va, fva):
for decoded_string in string_decoder.extract_strings(delta_bytes, min_length, no_filter):
decoded_strings.append(decoded_string)
return decoded_strings
