攻防世界 reverse 新手练习区

1.re1 DUTCTF

IDA shift+F12 查看字符串

DUTCTF{We1c0met0DUTCTF}

2.game ZSCTF

zsctf{T9is_tOpic_1s_v5ry_int7resting_b6t_others_are_n0t}

攻防世界 reverse 新手练习区

3.Hello, CTF Pediy CTF 2018

CrackMeJustForFun

攻防世界 reverse 新手练习区

将16进制字符串转ascii字符串得到flag

4.open-source HackYou CTF

参数 51966 25 h4cky0u

flag为:

c0ffee

5.open-source 9447 CTF 2014

IDA查看字符串

9447{This_is_a_flag}

6.simple-unpack

脱壳搜索字符串

flag{Upx_1s_n0t_a_d3liv3r_c0mp4ny}

7.logmein RC3 CTF 2016

1 v8=":\"AL_RT^L*.?+6/46"
2 v7 = 'ebmarah'[::-1]
3 s=''
4 for i in range(len(v8)):
5     s+=chr(ord(v7[i%7])^ord(v8[i]))
6 
7 print(s)

RC3-2016-XORISGUD

8. no-strings-attached 9447 CTF 2014

 1 x=[58,  20,   0,   0,  54,  20,   0,   0,  55,  20,
 2     0,   0,  59,  20,   0,   0, 128,  20,   0,   0,
 3   122,  20,   0,   0, 113,  20,   0,   0, 120,  20,
 4     0,   0,  99,  20,   0,   0, 102,  20,   0,   0,
 5   115,  20,   0,   0, 103,  20,   0,   0,  98,  20,
 6     0,   0, 101,  20,   0,   0, 115,  20,   0,   0,
 7    96,  20,   0,   0, 107,  20,   0,   0, 113,  20,
 8     0,   0, 120,  20,   0,   0, 106,  20,   0,   0,
 9   115,  20,   0,   0, 112,  20,   0,   0, 100,  20,
10     0,   0, 120,  20,   0,   0, 110,  20,   0,   0,
11   112,  20,   0,   0, 112,  20,   0,   0, 100,  20,
12     0,   0, 112,  20,   0,   0, 100,  20,   0,   0,
13   110,  20,   0,   0, 123,  20,   0,   0, 118,  20,
14     0,   0, 120,  20,   0,   0, 106,  20,   0,   0,
15   115,  20,   0,   0, 123,  20,   0,   0, 128,  20,
16     0,   0,   0,   0,   0,   0]
17 y=[]
18 for t in x:
19     if t!=20 and t!=0:
20         y.append(t)
21 i=0
22 while i<len(y):
23     for j in range(1,6):
24         y[i]-=j
25         y[i]=chr(y[i])
26         i+=1
27         if i==len(y):
28             break
29 print(''.join(y))

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