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main.py
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main.py
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from cmath import pi
import frida
from rpcFunc import rpcFunc
import data_info as data
import argparse
import handle_exception
from handle_excepetion_info import exception_info
# python3 main.py -s libnative-lib.so@test_value -l 4
def test():
print(data.break_point_info)
def wrapper_to_post(_type, content):
return {'type': _type, 'payload': content}
def pointersize_pagesize_to_maskcode(pointer_size, page_size):
pointer_mask = 'ff' * pointer_size
page_size_len = 0
while page_size != 1:
page_size = page_size / 0x10
page_size_len = page_size_len + 1
pointer_mask_list = list(pointer_mask)
pointer_mask_list[2 * pointer_size - page_size_len:] = '0' * page_size_len
pointer_mask = ''.join(pointer_mask_list)
return int(pointer_mask, 16)
# 对 data.soft_breakpoint_runtime中的数据进行检查
def find_soft_breakpoint_from_list(addr: int):
with data.soft_breakpoint_runtime_lock:
breakpoint_list_len = len(data.soft_breakpoint_runtime)
if 0 != breakpoint_list_len:
for index in range(0, breakpoint_list_len):
if data.soft_breakpoint_runtime[index]['break_addr'] == addr:
return index
return -1
def my_message_handler(message, payload):
if message["type"] == "send": # 接收
messgae_data = message["payload"]
if 'exception' == messgae_data['__tag']:
handle_exception.handle(messgae_data)
# 从js脚本那收到的设置软断点的信息，并把此保存到soft_breakpoint_runtime
elif 'set_soft_breakpoint' == messgae_data['__tag']:
addr = int(messgae_data['break_addr'], 16)
index = find_soft_breakpoint_from_list(addr)
#多线程访问
if -1 != index:
data.rpc.api._script.post(wrapper_to_post('set_soft_breakpoint_ret', 0))
return
else:
save_soft_breakpoint = data.soft_breakpoint_struct.copy()
save_soft_breakpoint['break_addr'] = int(messgae_data['break_addr'], 16)
save_soft_breakpoint['break_len'] = messgae_data['break_len']
save_soft_breakpoint['ins_content'] = messgae_data['ins_content']
with data.soft_breakpoint_runtime_lock:
pass
# TODO
data.soft_breakpoint_runtime.append(save_soft_breakpoint)
data.rpc.api._script.post(wrapper_to_post('set_soft_breakpoint_ret', 0))
elif 'resume_soft_breakpoint' == messgae_data['__tag']:
addr = int(messgae_data['addr'],16)
# 删除指定断点
index = find_soft_breakpoint_from_list(addr)
if -1 != index:
with data.soft_breakpoint_runtime_lock:
pass
else:
raise Exception('soft_breakpoint no found')
send_dict = {}
send_dict['msg'] = 1
data.rpc.api._script.post(wrapper_to_post('resume_soft_breakpoint_ret', send_dict))
elif 'show_details' == messgae_data['__tag']:
exception_info(messgae_data,data.proc_info['arch']).print_info()
def init_proc(js_file_name: str):
process = frida.get_usb_device().attach(data.PACKAGE)
js_file_content = open('index.js', 'r').read()
script = process.create_script(js_file_content)
script.on("message", my_message_handler)
script.load()
data.rpc = rpcFunc(script.exports)
data.proc_info['arch'] = data.rpc.get_device_arch()
data.proc_info['platform'] = data.rpc.get_platform()
data.proc_info['pointersize'] = data.rpc.get_pointer_size()
data.proc_info['pagesize'] = data.rpc.get_page_size()
data.proc_info['mem_protect'] = data.rpc.get_protect_ranges()
def get_args():
parse = argparse.ArgumentParser()
group = parse.add_mutually_exclusive_group(required=True)
parse.add_argument('-l', '--length', help='breakpoint length can not over pagesize', required=True, type=int)
parse.add_argument('-n', '--name', help='process name', type=str)
parse.add_argument('-lp','--listproc', help='list process',action='store_true')
group.add_argument('-b', '--break', help='absolute address, eg. 0x12345678', type=str)
group.add_argument('-o', '--offset', help='relative address, eg. libxxx.so@0x1234', type=str)
group.add_argument('-s', '--symbol', help='get address by symbol eg. libxxx.so@test_value', type=str)
data.args = vars(parse.parse_args())
if data.args['listproc']:
lists = frida.get_usb_device().enumerate_processes()
for item in lists:
print(item)
exit(0)
if data.args['name']:
data.PACKAGE = data.args['name']
def handle_breakinfo_args():
args_list = ['break', 'offset', 'symbol']
def wrapper_input_str(s: str, l: int, input_type: str):
if l > data.proc_info['pagesize']:
raise Exception('length must be less than %d' % (data.proc_info['pagesize']))
data.break_point_info['break_len'] = l
if 'break' == input_type:
data.break_point_info['break_addr'] = int(s, 16)
else:
arr = s.split('@')
if 2 != len(arr):
raise Exception('wrapper_input_str input type error')
if 'offset' == input_type:
data.break_point_info['break_addr'] = int(data.rpc.get_module(arr[0]['base']), 16) + int(arr[1], 16)
elif 'symbol' == input_type:
data.break_point_info['break_addr'] = int(data.rpc.get_export_by_name(arr[0], arr[1]), 16)
for key in args_list:
if data.args[key]:
wrapper_input_str(data.args[key], data.args['length'], key)
# 获取断点的信息
def get_breakinfo():
ret_list = []
for item in data.proc_info['mem_protect']:
if data.break_point_info['break_addr'] + data.break_point_info['break_len'] in range(item['base'],item['base'] + item['size']):
ret_list = [data.break_point_info['break_addr'] & pointersize_pagesize_to_maskcode(data.proc_info['pointersize'],data.proc_info['pagesize']),item['protection']]
data.break_point_info['break_page_info'] = ret_list
break
if [] == ret_list:
raise Exception('get_break_info the break pointer must be in a segement')
def remake_memprotect_info():
for item in data.proc_info['mem_protect']:
item['base'] = int(item['base'], 16)
def init_breakinfo():
remake_memprotect_info()
get_breakinfo()
def set_breakpoint():
point = data.break_point_info['break_page_info']
data.rpc.set_page_protect(point[0], '---')
data.rpc.set_exception_handler()
def main():
try:
# 获取命令行参数
get_args()
# 初始化程序信息
init_proc('index.js')
# 处理从命令行参数中获取的信息
handle_breakinfo_args()
# 初始化断点信息
init_breakinfo()
# 设置断点
set_breakpoint()
test()
except Exception as e:
print('error:', e)
if __name__ == '__main__':
main()
input()