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#linux #bash #obfuscation using shell parameter expansion:

${alphabet:2:1}at really
${alphabet: -24:-23}at really
${alphabet: -24:1}at really
${alphabet:2:-23}at really…
similar #bat #windows (…)
The goal is to obfuscate the following command:
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
Read 6 tweets
#linux #bash #obfuscation using octal vals
$'\143\141\164' really…
"Words of the form $'string' are treated specially. The word expands to string, with backslash-escaped characters replaced as specified by the ANSI C standard."

$'\143'$'\141'$'\164' really
$'\143'''$'\141'''''''''''''$'\164' really
$'\143'''$'\141'''""''''""''$'\164' really

'' -> empty string
""-> empty string
'a''b' -> 'ab' (concatenation)

(deleted the previous one, as the picture had a problem)
To give you a headache

$'\143'''$'\141'$t''"$t"''`$t`''$'\164' really
Read 13 tweets
dissent thread to chew on

If each average pack of gum weighs 47.1 grams, holding 15 sticks, and 17% of its weight is due to packaging
Subtract the 17% of packaging weight from 47 grams = 8.00700 grams of packing weight.
Subtract 8.00700 grams of packaging weight from the total
47.1 grams = 39.09300 grams of total gum in (15 sticks)
Divide 39.09300 grams x 15 sticks = 2.6062 grams of gum per stick

If 1 Million people line a parade route and each person simultaneously begins chewing one stick of gum weighing 2.6062 grams on average...
The total amount of gum being chewed at one given time is 1,000,000 x 2.6062 grams = 2606200 grams of gum

2606200 grams of gum converted to pounds = 5745.687 pounds of gum

One stick of gum.
1 Million people.
5745.687 pounds of gum being chewed at once along a parade route.
Read 19 tweets

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