Created
August 30, 2018 15:34
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anubis c2 dec
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import base64 | |
import sys | |
t = [] | |
for i in range(256): | |
t.append(i) | |
bArr = bytearray(sys.argv[1].encode("utf-8")) | |
i2 = 0 | |
def swap(i,i2,arr): | |
i3 = arr[i] | |
arr[i] = arr[i2] | |
arr[i2] = i3 | |
for i in range(256): | |
i2 = (((i2 + t[i])+ bArr[i% len(bArr)]) +256)% 256 | |
swap(i,i2,t) | |
b = base64.b64decode(sys.argv[2]).decode() | |
print(b) | |
t2 = [] | |
for i in range(int(256/2)): | |
t2.append(i) | |
barr3 = [] | |
for i in range(0,len(b),2): | |
barr3.append( (int(b[i],16) << 4) + int(b[i+1],16)) | |
b = 0 | |
c = 0 | |
barr4 = [] | |
for i in range(len(barr3)): | |
b = (b+1)%256 | |
c = (c+t[b])%256 | |
swap(b,c,t) | |
barr4.append(t[(t[b]+t[c])%256] ^ barr3[i]) | |
for i in barr4: | |
print(chr(i),end="") | |
# sample https://twitter.com/Jacob17918360/status/1033177684707356672 | |
# Example usage : python dec.py flash1 MzA5MGMwOGFjNjI5MzkwY2MwODk2ZjMwOTk3OTNjMDIxNzM0YzcyOA== | |
# http://supersheet.ga |
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