def get_after_run_info(self, args_rule):
"""
获取某函数执行后的返回值
# TODO 添加参数的变化
"""
runtime_info = {}
args = self.get_xdbg_reg_var()
rv = ida_idd.regval_t()
ida_dbg.get_reg_val('PC', rv)
FELogger.console('PC: %s' % hexstr(rv.ival))
arg_v = args[arm_regset.ret].ival
#str_t = FEStrMgr.get_string_from_mem(arg_v)
#runtime_info[arm_regset.ret] = [hexstr(arg_v), repr(str_t)]
#FELogger.console('ret: %s => %s' % (hexstr(arg_v), repr(str_t)))
FELogger.console('%s: %s' % (arm_regset.ret, hexstr(arg_v)))
return runtime_info
def fix_len_args_run_info(self, args_rule, args):
"""
获取定长参数函数的寄存器信息
"""
run_info = {}
for idx in range(len(args_rule)):
str_reg = 'R%s' % idx
arg_t = args_rule[idx]
if arg_t == 'none': # 跳过无关的参数
continue
elif arg_t == 'int':
run_info[str_reg] = [hexstr(args[str_reg].ival), None]
FELogger.console('%s: %s' %
(str_reg, hexstr(args[str_reg].ival)))
elif arg_t == 'str':
arg_v = args[str_reg].ival
if arg_v != 0:
str_t = FEStrMgr.get_string_from_mem(arg_v)
else:
str_t = ''
run_info[str_reg] = [hexstr(arg_v), repr(str_t)]
FELogger.console('%s: %s => %s' %
(str_reg, hexstr(arg_v), repr(str_t)))
else:
run_info[str_reg] = [hexstr(args[str_reg].ival), None]
FELogger.console('%s: %s' %
(str_reg, hexstr(args[str_reg].ival)))
return run_info
def get_before_run_info(self, args_rule):
"""
获取某函数执行前的寄存器信息
"""
runtime_info = {}
args = self.get_xdbg_reg_var()
rv = ida_idd.regval_t()
ida_dbg.get_reg_val('PC', rv)
FELogger.console('PC: %s' % hexstr(rv.ival))
# 判断是否包含变长参数
if args_rule[-1] == '...':
runtime_info = self.var_len_args_run_info(args_rule, args)
elif args_rule[-1] == 'va_list':
# TODO 支持va_list参数解析，暂时同“...”
runtime_info = self.var_len_args_run_info(args_rule, args)
else:
runtime_info = self.fix_len_args_run_info(args_rule, args)
return runtime_info
def banner(self):
FELogger.console(PLUGIN_HELP)
FELogger.console(BANNER_MSG)
def var_len_args_run_info(self, args_rule, args):
"""
获取变长参数函数的寄存器信息
"""
run_info = {}
fmt_t = ''
for idx in range(len(args_rule) - 1):
str_reg = 'R%s' % idx
arg_t = args_rule[idx]
if arg_t == 'none': # 跳过无关参数
continue
elif arg_t == 'int':
run_info[str_reg] = [hexstr(args[str_reg].ival), None]
FELogger.console('%s: %s' %
(str_reg, hexstr(args[str_reg].ival)))
elif arg_t == 'str':
arg_v = args[str_reg].ival
if arg_v != 0:
str_t = FEStrMgr.get_string_from_mem(arg_v)
else:
str_t = ''
run_info[str_reg] = [hexstr(arg_v), repr(str_t)]
FELogger.console('%s: %s => %s' %
(str_reg, hexstr(arg_v), repr(str_t)))
elif arg_t == 'fmt':
arg_v = args[str_reg].ival
fmt_t = FEStrMgr.get_string_from_mem(arg_v)
run_info[str_reg] = [hexstr(arg_v), repr(fmt_t)]
FELogger.console('%s: %s => %s' %
(str_reg, hexstr(arg_v), repr(fmt_t)))
else:
run_info[str_reg] = [hexstr(args[str_reg].ival), None]
FELogger.console('%s: %s' %
(str_reg, hexstr(args[str_reg].ival)))
# 判断是否包含格式字符串
if fmt_t != '':
fmt_list = FEStrMgr.parse_format_string(str_t)
args_num = len(fmt_list) + idx + 1
# 判断变长参数总个数
if idx + 1 == args_num:
pass
# n<=4 寄存器
elif idx + 1 < args_num and args_num <= 4:
for jdx in range(len(fmt_list)):
str_reg = 'R%s' % (idx + jdx + 1)
if 's' in fmt_list[jdx]:
arg_v = args[str_reg].ival
str_t = FEStrMgr.get_string_from_mem(arg_v)
run_info[str_reg] = [hexstr(arg_v), repr(str_t)]
FELogger.console('%s: %s => %s' %
(str_reg, hexstr(arg_v), repr(str_t)))
else:
run_info[str_reg] = [hexstr(args[str_reg].ival), None]
FELogger.console('%s: %s' %
(str_reg, hexstr(args[str_reg].ival)))
# n>4 寄存器+栈
else:
stack_num = args_num - 4
sp_addr = args[arm_regset.stack].ival
for jdx in range(4 - idx - 1):
str_reg = 'R%s' % (idx + jdx + 1)
if 's' in fmt_list[jdx]:
arg_v = args[str_reg].ival
str_t = FEStrMgr.get_string_from_mem(arg_v)
run_info[str_reg] = [hexstr(arg_v), repr(str_t)]
FELogger.console('%s: %s => %s' %
(str_reg, hexstr(arg_v), repr(str_t)))
else:
run_info[str_reg] = [hexstr(args[str_reg].ival), None]
FELogger.console('%s: %s' %
(str_reg, hexstr(args[str_reg].ival)))
run_info[arm_regset.stack] = []
for kdx in range(stack_num):
stack_v = ida_bytes.get_wide_dword(sp_addr)
if 's' in fmt_list[jdx + kdx + 1]:
if stack_v == 0:
str_t = ''
else:
str_t = FEStrMgr.get_string_from_mem(stack_v)
run_info[arm_regset.stack].append(
[hexstr(sp_addr),
hexstr(stack_v),
repr(str_t)])
FELogger.console(
'stack: %s - %s => %s' %
(hexstr(sp_addr), hexstr(stack_v), repr(str_t)))
else:
run_info[arm_regset.stack].append(
[hexstr(sp_addr),
hexstr(stack_v), None])
FELogger.console('stack: %s - %s' %
(hexstr(sp_addr), hexstr(stack_v)))
sp_addr += 4
else:
pass
return run_info
def dbg_bpt(self, tid, ea):
"""
触发断点时的处理函数
"""
func_name_t = idc.print_operand(ea, 0)
point_hit_count = self.inc_break_point_hit_count(ea)
if is_func_call(ea):
# 如果当前地址是函数调用（即调用前）
args_rule = self.get_args_rule(func_name_t, ea)
if args_rule == False:
FELogger.console('临时断点%s' % hexstr(ea))
else:
up_func_name = ida_funcs.get_func_name(ea)
func_hit_count = self.inc_break_func_hit_count(up_func_name)
FELogger.console(func_name_t + ' - ' + up_func_name + '-' * 60)
FELogger.console(
'tid - %d - %d, pointHit: %d, funcHit: %d' %
(tid, time.time(), point_hit_count, func_hit_count))
FELogger.console(('%s - before' + '-' * 30) % func_name_t)
ida_dbg.refresh_debugger_memory()
before_info = self.get_before_run_info(args_rule)
elif is_func_call(ida_bytes.prev_head(ea, 0)):
# 如果当前地址的上一条地址是函数调用（即调用后）
func_ea = ida_bytes.prev_head(ea, 0)
func_name = idc.print_operand(func_ea, 0)
args_rule = self.get_args_rule(func_name, func_ea)
FELogger.console(('%s - after ' + '-' * 30) % func_name)
# ida_dbg.refresh_debugger_memory()
after_info = self.get_after_run_info(args_rule)
else:
FELogger.console('临时断点%s' % hexstr(ea))
# 是否单步调试
if self.step_dbg == False:
ida_dbg.continue_process()
return 0
