Author: Nathan CORNELOUP
Version: 0.1.0
Android Pattern Crack is a Rust-powered app designed to crack Android Pattern gesture.key files, unlocking devices with pattern locks up to Android 5.1.
The gesture.key file contain the SHA1 hash of the pattern in an hexadecimal form.
Once you have cloned this repository, go inside the folder
cd android_pattern_cracker
Then compile the binary using cargo :
cargo build --release
You will find your android_pattern_cracker binary inside :
target/build
You can then use the binary :
./android_pattern_cracker -f gesture.key
To use Android Pattern Cracker, follow these simple steps:
Navigate to the directory where the android_pattern_cracker executable is located.
./android_pattern_cracker -f gesture.key
A little explanation on how Android store the pattern.
The pattern numbers on the pattern lock screen are the following :
[ 1 ] [ 2 ] [ 3 ]
[ 4 ] [ 5 ] [ 6 ]
[ 7 ] [ 8 ] [ 9 ]
If your pattern is a "U", like this one ( you start top left and finish top right ):
[ X ] [ ] [ X ]
[ X ] [ ] [ X ]
[ X ] [ X ] [ X ]
Your pattern number would be 1478963.
But, Android encode this pattern as the following :
[ 0 ] [ 1 ] [ 2 ]
[ 3 ] [ 4 ] [ 5 ]
[ 6 ] [ 7 ] [ 8 ]
So, your pattern would be hashed as : 0367852
Since each digit is encoded in one byte : 00 03 06 07 08 05 02
Then, Android generate the SHA-1 hash of this hexadecimal number : SHA1("\x00\x03\x06\x07\x08\x05\x02") => 61 8B 58 9A A9 8D FE E7 43 E7 12 09 13 A0 66 5A 4A 5E 83 17 and store it inside the gesture.key file.