forked from arti/vt1200
SDD
1e5c095b72
The firmware transforms the reply (16-round Feistel per 8-byte record) and compares it with the host-order copy of the challenge, so the answer is swap4(inverse_transform(swap4(challenge))). The font stages are memcpy in this path because dwt_prf initialises only mode 1. challenge.py implements the transform and its inverse using the firmware's fixed key/SP table; solve.py answers the challenge over TCP using the unmodified exploit client. 320 forward vectors, the firmware's own inverse and three live sessions validate it. A live run with no breakpoints poked the 82-byte hello-world payload and ran it: MAGIC DEAD/BEEF/0400, VRAM 1024/1024. Notes and evidence under dwt/notes and dwt/evidence.
5 lines
672 B
Plaintext
5 lines
672 B
Plaintext
serving 29 names on ('192.168.99.1', 69)
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names: 69, 69/baseline.pcf, 69/evil.pcf, 69/fonts.dir, 69/v1200a.pcf, ROM, X11/baseline.pcf, X11/evil.pcf, X11/fonts.dir, X11/v1200a.pcf, baseline.pcf, evil.pcf, font, font/baseline.pcf, font/evil.pcf, font/fonts.dir, font/v1200a.pcf, fonts, fonts.dir, fonts/baseline.pcf, fonts/evil.pcf, fonts/fonts.dir, fonts/v1200a.pcf, misc/baseline.pcf, misc/evil.pcf, misc/fonts.dir, misc/v1200a.pcf, real.pcf, rom
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bootp: L2 responder on tap-mess-1000-0: handing out 192.168.99.2, siaddr 192.168.99.1 (src mac c6:fc:cc:16:f5:66)
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bootp: request from 08:00:2b:16:4b:5a xid=ee2284e6 -> 192.168.99.2 (siaddr 192.168.99.1, tap tap-mess-1000-0)
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