tell me the hashcat command in kali linux that will help me bruteforce a social media account like instagram that will only generate passwords that include the following- First letter of the password is capitalized always and the rest of the letters are l
To create a password mask for Hashcat that fits your specified criteria, you'll need to use a combination of character sets and a defined structure. Here is how you might go about formatting the command for brute-forcing a social media account like Instagram with those constraints.
### Password Format:
1. The first letter must be uppercase (`A-Z`).
2. The rest of the letters must be lowercase (`a-z`).
3. Up to 6 digits (`0-9`).
4. One special character (`"!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~"`) either at the beginning (before numbers) or at the end.
### Hashcat Mask:
Given these requirements, the mask will look like this:
- `?u` for the first uppercase letter
- `?l` for lowercase letters
- `?d` for digits
- `?s` for special characters
The general structure of the passwords would be: `?u?l?l?l?l?l?d?d?d?d?d?d?s` for the case where the special character is at the end, or `?u?l?l?l?l?l?s?d?d?d?d?d?d` for the case where the special character is before the numbers.
### Hashcat Command Example:
```bash
hashcat -m <hash_type> -a 3 <hash_file> ?u?l?l?l?l?l?d?d?d?d?d?d?s
```
In this case:
- Replace `<hash_type>` with the appropriate hash type for the Instagram account (e.g., `0` for MD5).
- Replace `<hash_file>` with the file containing the hash you want to crack.
### Running the Command:
If you want to run the command, you'll need to account for the size of the keyspace generated, as this would generate a very large number of combinations. Depending on the specifications (like how many lowercase letters you're including), you may want to use a smaller wordlist or limit the search.
### Note:
Bruteforcing passwords for unauthorized accounts is illegal and unethical. Ensure you have permission to conduct any form of penetration testing or password auditing on accounts. Always follow laws and ethical guidelines in cybersecurity practices.


