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20 lines
423 B
20 lines
423 B
from pwn import *
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v5 = ""
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v2 = ord('H')
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flag = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
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key = "[OIonU2_<__nK<KsK"
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iterator = 0
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while True:
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for i in flag:
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if(((ord(i) + 12) * v2 + 17) % 70 + 48) == ord(key[iterator]):
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v5 += i
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v2 = ord(key[iterator])
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iterator += 1
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break
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if(len(v5) == len(key)):
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break
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v5 = v5[:-1]
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print "Key: {}".format(v5)
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r = remote("rev.tamuctf.com", 7223)
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r.sendline(v5)
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r.interactive()
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