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PayloadsAllTheThings/Insecure Randomness
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Swissky 2fc3eed8a5 Insecure Randomness
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README.md Insecure Randomness 2022-10-17 11:07:33 +02:00

README.md

Insecure Randomness

Summary

GUID / UUID

GUID Versions

Version identification: xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx The four-bit M and the 1- to 3-bit N fields code the format of the UUID itself.

Version Notes
0 Only 00000000-0000-0000-0000-000000000000
1 based on time, or clock sequence
2 reserved in the RFC 4122, but ommitted in many implementations
3 based on a MD5 hash
4 randomly generated
5 based on a SHA1 hash

Tools

  • intruder-io/guidtool - A tool to inspect and attack version 1 GUIDs 
    $ guidtool -i 95f6e264-bb00-11ec-8833-00155d01ef00
UUID version: 1
UUID time: 2022-04-13 08:06:13.202186
UUID timestamp: 138691299732021860
UUID node: 91754721024
UUID MAC address: 00:15:5d:01:ef:00
UUID clock sequence: 2099

$ guidtool 1b2d78d0-47cf-11ec-8d62-0ff591f2a37c -t '2021-11-17 18:03:17' -p 10000

References