2024BaseCTF-re

BaseCTF-re

You are good at IDA

直接按F5得到一地段flag

Y0u_4Re_

第二段提示F12

双击打开

按x

900d_47_

最后一段提示在Interesting函数之中

id4

BaseCTF{Y0u_4Re_900d_47_id4}

UPX mini

先脱壳

拖入IDA，base64解码就好

BasePlus

F5

找到key0xE

base64换表＋异或

BaseCTF{BA5e_DEcoD1N6_sEcr3t}

UPX

脱壳不了

小写的upx改大写

base64换表

用官方的脚本跑一下吧...

import base64
import string
enc = "$rg7_dhd~Alidg+zeyhz`vnz_d,7sy0="
string1 = 'A,.1fgvw#`/2ehux$~"3dity%_;4cjsz^+{5bkrA&=}6alqB*-[70mpC()]89noX'
string2 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
print (base64.b64decode(enc.translate(str.maketrans(string1,string2))))

BaseCTF{UPX_1s_$o_e@sy}