Misc

[Round 1] plain_crack

复制一份原来的脚本改动不使用密码把原来的脚本压缩进行明文

# -*- coding:utf8 -*-

import pyminizip
import os

def create(files, zfile):
    # 不使用密码进行压缩
    pyminizip.compress_multiple(files, [], zfile, None, 0)

if __name__ == '__main__':
    files = ['build.py']
    zfile = 'crack0.zip'
    create(files, zfile)

得到的压缩包解压打开word文件

移开图片发现flag但是不对

直接提取word文档

YLCTF{a709598c-f54c-4db5-ab69-8ddb499df053}

[Round 1] hide_png

难度 : 简单
我送你n个.................

发现很多小白点，使用PS 选择>色彩范围选取所有小白点

填充颜色，然后搞个背景找到flag

YLCTF{a27f2d1a-9176-42cf-a2b6-1c87b17b98dc}

[Round 1] pngorzip

难度 : 简单
这到底是png还是zip啊，你可得看清楚

发现压缩包

┌──(kali㉿kali)-[~/Desktop]
└─$ zsteg out.png 
imagedata           .. file: VAX-order 68k Blit mpx/mux executable
b1,rgb,lsb,xy       .. file: Zip archive data, at least v5.1 to extract, compression method=AES Encrypted                           
b2,r,msb,xy         .. text: "JYtA@]Q\""                                                                                            
b2,g,lsb,xy         .. file: MIPSEB-LE MIPS-III ECOFF executable not stripped - version 110.109                                     
b2,b,msb,xy         .. text: ">\\A#OG\tG>jTF"                                                                                       
b3,g,msb,xy         .. text: "Y$XI9u(K"                                                                                             
b3,b,lsb,xy         .. file: Intel ia64 COFF object file, no line number info, not stripped, 1281 sections, symbol offset=0x89000f5, -618261216 symbols, optional header size 46701, created Sat May 27 22:10:35 2028                                                   
b3,bgr,lsb,xy       .. file: PDP-11 executable not stripped                                                                         
b4,r,lsb,xy         .. text: "l4vygUw{"                                                                                             
b4,r,msb,xy         .. text: "wwwd/V@bf"                                                                                            
b4,g,lsb,xy         .. text: "\"%fffvfe"                                                                                            
b4,g,msb,xy         .. text: "$&B0e.Jtcwp"                                                                                          
b4,b,lsb,xy         .. text: "vETUUDD!"                                                                                             
b4,b,msb,xy         .. file: Targa image data - RLE 34816 x 2048 x 8 +26214 +42726 - four way interleave                            
b4,rgb,msb,xy       .. text: "u`3`6@qg5V-"                                                                                          
b4,bgr,lsb,xy       .. file: MIPSEB ECOFF executable not stripped - version -60.108                                                 
b4,bgr,msb,xy       .. text: "Pp5cf@0w1e]"

导出

┌──(kali㉿kali)-[~/Desktop]
└─$ zsteg -E "b1,rgb,lsb,xy" out.png > out.zip

修复之后即可爆破

压缩包密码114514giao

YLCTF{d359d6e4-740a-49cf-83eb-5b0308f09c8c}