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#linux #bash #obfuscation using shell parameter expansion:
alphabet=abcdefghijklmnopqrstuvwxyz
${alphabet:2:1}at really
${alphabet: -24:-23}at really
${alphabet: -24:1}at really
${alphabet:2:-23}at really
gnu.org/software/bash/…
similar #bat #windows (ss64.com/nt/syntax-subs…)
alphabet=abcdefghijklmnopqrstuvwxyz
${alphabet:2:1}at really
${alphabet: -24:-23}at really
${alphabet: -24:1}at really
${alphabet:2:-23}at really
gnu.org/software/bash/…
similar #bat #windows (ss64.com/nt/syntax-subs…)
The goal is to obfuscate the following command:
cat really
in which, really is a file.
cat really
in which, really is a file.
Using arithmetic (add, sub, mul, div, mod, and pow) for calculating index or lenght
${alphabet: 2:(-20-3)}at really
${alphabet: 2:(-20-3)}at really
