Mercurial > dropbear-fuzzcorpus
annotate make_fuzzinput.py @ 21:1a22de6a6b1a
Script to fetch new corpus and update the repository
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Sun, 07 Mar 2021 16:06:25 +0800 |
| parents | ec5e2b121e57 |
| children |
| rev | line source |
|---|---|
| 0 | 1 #!/usr/bin/env python3 |
| 2 | |
| 3 # A fuzz input consists of a SSH-string header followed by the SSH stream. | |
| 4 # This program prepends a basic prefix. | |
| 5 | |
| 6 import struct | |
| 7 import sys | |
| 8 | |
| 9 stream = sys.stdin.buffer.read() | |
| 10 | |
| 11 header = b'' | |
| 12 # uint32 wrapfd random seed | |
| 13 header += struct.pack(">I", 0xafaf1234) | |
| 14 | |
| 15 # prepend length | |
| 16 header = struct.pack(">I", len(header)) + header | |
| 17 sys.stdout.buffer.write(header) | |
| 18 sys.stdout.buffer.write(stream) |