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[add] 添加了 add_condition 的链式调用，并依据命中的条件数对返回的多个结果进行排序 #13

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[add] 添加了 add_condition 的链式调用，并依据命中的条件数对返回的多个结果进行排序 #13

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18 changes: 12 additions & 6 deletions LibcSearcher.py
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@ def add_condition(self, func, address):
print("The address should be an int number")
sys.exit()
self.condition[func] = address
return self

#Wrapper for libc-database's find shell script.
def decided(self):
Expand All @@ -43,23 +44,28 @@ def decided(self):
for i in f:
files += re.findall('^.*symbols$', i)

result = []
result = {}
for ff in files:
fd = open(db + ff, "rb")
data = fd.read().decode(errors='ignore').split("\n")
for x in res:
if any(map(lambda line: x.match(line), data)):
result.append(ff)
try:
result[ff] += 1
except KeyError:
result[ff] = 1
fd.close()

result = sorted(result.items(), key=lambda x: x[1], reverse=True)

if len(result) == 0:
print("No matched libc, please add more libc or try others")
sys.exit(0)

if len(result) > 1:
print("Multi Results:")
for x in range(len(result)):
print("%2d: %s" % (x, self.pmore(result[x])))
print("%2d:[hit %2d times] %s" % (x, result[x][1], self.pmore(result[x][0])))
print("Please supply more info using \n\tadd_condition(leaked_func, leaked_address).")
while True:
in_id = input(
Expand All @@ -68,12 +74,12 @@ def decided(self):
sys.exit(0)
try:
in_id = int(in_id)
self.db = result[in_id]
self.db = result[in_id][0]
break
except:
continue
else:
self.db = result[0]
self.db = result[0][0]
print("[+] %s be choosed." % self.pmore(self.db))

def pmore(self, result):
Expand All @@ -84,7 +90,6 @@ def pmore(self, result):

#Wrapper for libc-database's dump shell script.
def dump(self, func=None):

if not self.db:
self.decided()
db = self.libc_database_path + self.db
Expand Down Expand Up @@ -120,3 +125,4 @@ def dump(self, func=None):
obj = LibcSearcher("fgets", 0x7ff39014bd90)
print("[+]system offset: ", hex(obj.dump("system")))
print("[+]/bin/sh offset: ", hex(obj.dump("str_bin_sh")))