https://github.com/healeycodes/unrandom

🎲 Intercept and modify getrandom syscalls from a process (x86-64 Linux).
https://github.com/healeycodes/unrandom

getrandom ptrace syscalls

Last synced: 13 days ago
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🎲 Intercept and modify getrandom syscalls from a process (x86-64 Linux).

• Host: GitHub
• URL: https://github.com/healeycodes/unrandom
• Owner: healeycodes
• Created: 2024-07-08T13:54:42.000Z (6 months ago)
• Default Branch: main
• Last Pushed: 2024-07-08T14:59:28.000Z (6 months ago)
• Last Synced: 2024-10-05T17:43:03.379Z (3 months ago)
• Topics: getrandom, ptrace, syscalls
• Language: C
• Homepage: https://healeycodes.com/making-python-less-random
• Size: 1.95 KB
• Stars: 7
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# 🎲 unrandom

> My blog post: [Making Python Less Random](https://healeycodes.com/making-python-less-random)




Force `getrandom` syscalls from a process to return zeroes on x86-64 Linux.




Start a Python REPL. Then build and run `getrandom`:

```txt

gcc -o unrandom unrandom.c

./unrandom 

```

Call `os.urandom` in the REPL:

```txt

>>> import os

>>> os.urandom(8)

b'\x00\x00\x00\x00\x00\x00\x00\x00'

>>> os.urandom(8)

b'\x00\x00\x00\x00\x00\x00\x00\x00'

```