xorstuff

Recover key from xored file using files signatures.

mostly usefull in ctf.

Input arguments :

usage: main.py [-h] [-f FILENAME] [-t {wav,bmp,elf,png,jpg}] [-l KEY_LENGTH] [-x XOR_KEY]

xor stuff with other stuff

optional arguments:

-h, --help            show this help message and exit
-f FILENAME, --file FILENAME
-t {wav,bmp,elf,png,jpg,text}, --type {wav,bmp,elf,png,jpg,text}
-l KEY_LENGTH, --length KEY_LENGTH
-x XOR_KEY, --xor XOR_KEY (xor with given key)
-g, --grep            Search pattern in result

Usage :

####xor file with known key:

foo@bar ~/xorstuff> /mai.py -f input_file.png -x my_key > ./output_file.png 

####Recover key with known length:

foo@bar ~/xorstuff> ./main.py -f ./test_files/xored_file.png -t png -l 6
[*] Open file
[*] Key length set to 6
[*] Start searching password
secret

####Recover key with unknown length:

foo@bar ~/xorstuff> ./main.py -f ./test_files/xored_file.png -t png
[*] Open file
[*] Guess key length
[*] Probable key length
    1 : 39.1%
    6 : 27.3%
    9 : 18.7%
    12 : 14.8%
[*] Most probable key length is 3*n
[*] Key length set to 1
[*] Start searching password
[*] Key length set to 6
[*] Start searching password
secret

####Add your customs headers and headers with unknown bytes Add your custom class in ./modules/ and extends ModuleBaseClass look at ModuleBaseClass.py for doc and ./modules/*.py for examples.

####TODO

• Add validation in modules elf and wav