help me to crack this hash

[indeep]

please help me to crack this hash:
$P$BjJIN2hgVDkOGk1Mzmxr5hJILiXazq/
$P$BdrfTcy0Z8YQcqSP9EVAwbgrKeoQ6d1

 

[n3xtr4n]

The hashes you provided appear to be in the format used by the phpBB3 password hashing algorithm, which uses a custom implementation of the Portable PHP Password Hashing Framework (phpass). The $P$ prefix indicates this, and the hashes are typically generated using MD5 with a salt and multiple iterations. Cracking such hashes requires specialized tools and techniques, and success depends on the complexity of the original password, available computational resources, and the method used.

### Step-by-Step Approach to Cracking the Hashes

1. Understand the Hash Format:
- The $P$ prefix confirms the hash is from phpass, commonly used by phpBB3.
- The format is $P$[iteration_char][salt][hash], where:
- iteration_char is a single character representing the number of hashing iterations (logarithmic scale, base 2, starting from 'D' = 2^7 iterations).
- salt is an 8-character string used to randomize the hash.
- hash is the resulting MD5-based hash.
- For your hashes:
- $P$BjJIN2hgVDkOGk1Mzmxr5hJILiXazq/:
- iteration_char: j (corresponds to 2^17 = 131,072 iterations).
- salt: JIN2hgVD.
- hash: kOGk1Mzmxr5hJILiXazq/.
- $P$BdrfTcy0Z8YQcqSP9EVAwbgrKeoQ6d1:
- iteration_char: d (corresponds to 2^11 = 2,048 iterations).
- salt: rfTcy0Z8.
- hash: YQcqSP9EVAwbgrKeoQ6d1.

2. Tools for Cracking:
- Hashcat: A powerful password-cracking tool that supports phpass hashes (mode 400 in Hashcat).
- John the Ripper: Another tool that supports phpass with the appropriate format.
- Online Hash Cracking Services: Services like Hashkiller or CrackStation can be tried, but they are less reliable for salted hashes like these unless the password is weak and already in their databases.

3. Using Hashcat:
- Step 1: Install Hashcat:
- Download and install Hashcat from hashcat.net.
- Ensure you have a compatible GPU for faster cracking (optional but recommended).

- Step 2: Prepare the Hash File:
- Create a text file (e.g., hashes.txt) and add the hashes:

       $P$BjJIN2hgVDkOGk1Mzmxr5hJILiXazq/
       $P$BdrfTcy0Z8YQcqSP9EVAwbgrKeoQ6d1

- Step 3: Choose an Attack Method:
- Brute-Force Attack: Tries all possible combinations (best for short passwords).
- Command: hashcat -m 400 -a 3 hashes.txt ?a?a?a?a?a?a
- ?a represents any character (letters, digits, symbols). Adjust the number of ?a for password length (e.g., 6 characters here).
- Dictionary Attack: Uses a wordlist (e.g., rockyou.txt) with common passwords.
- Command: hashcat -m 400 -a 0 hashes.txt rockyou.txt
- Download a wordlist like rockyou.txt from the internet.
- Hybrid Attack: Combines a wordlist with rules (e.g., adding numbers or symbols).
- Command: hashcat -m 400 -a 6 hashes.txt rockyou.txt -j 'c $1'
- This appends a digit (e.g., "password1") using a rule.

- Step 4: Run Hashcat:
- Example command for a dictionary attack:

       hashcat -m 400 -a 0 hashes.txt rockyou.txt --potfile-disable

- -m 400 specifies the phpass hash type.
- --potfile-disable prevents Hashcat from reusing previous results (optional).
- If you have a GPU, Hashcat will use it automatically for faster cracking.

- Step 5: Check Results:
- If successful, Hashcat will display the cracked passwords or save them to a file (e.g., hashcat.potfile).
- Example output: $P$BjJIN2hgVDkOGk1Mzmxr5hJILiXazq/:password123

4. Using John the Ripper:
- Step 1: Install John:
- Install John the Ripper from openwall.com or via a package manager (e.g., sudo apt install john on Linux).
- Step 2: Prepare the Hash File:
- Save the hashes in a file (e.g., hashes.txt).
- Step 3: Run John:
- Command: john --format=phpass hashes.txt
- For a wordlist attack: john --format=phpass --wordlist=rockyou.txt hashes.txt
- Step 4: View Results:
- Use john --show hashes.txt to display cracked passwords.

5. Considerations:
- Password Complexity: If the passwords are long or complex (e.g., >10 characters with mixed symbols), cracking could take significant time, even with a powerful GPU.
- Computational Resources: A high-end GPU (e.g., NVIDIA RTX 4090) can significantly speed up Hashcat. CPU-based cracking is slower.
- Wordlists: Use a good wordlist like rockyou.txt or create a custom one based on context (e.g., if you know the user’s habits, include related words).
- Legal and Ethical Concerns: Ensure you have permission to crack these hashes. Unauthorized cracking is illegal in many jurisdictions.

6. Alternative: Online Tools:
- Websites like CrackStation or Hashkiller allow you to submit hashes for free. However, they are less effective for salted hashes like phpass unless the password is very common.
- Copy and paste each hash into their interface and check results.

7. If Cracking Fails:
- If the passwords are strong, cracking may be impractical without significant computational power or time.
- Consider contextual clues (e.g., user’s common passwords, patterns) to narrow down the wordlist or brute-force scope.

### Example Commands
- Hashcat Dictionary Attack:

  hashcat -m 400 -a 0 hashes.txt rockyou.txt --potfile-disable

- Hashcat Brute-Force (6-character password):

  hashcat -m 400 -a 3 hashes.txt ?a?a?a?a?a?a --potfile-disable

- John the Ripper:

  john --format=phpass --wordlist=rockyou.txt hashes.txt

### Notes

• The first hash ($P$B...) has 2^17 iterations, making it slower to crack than the second ($P$B...) with 2^11 iterations.
• Start with a dictionary attack using a common wordlist like rockyou.txt. If that fails, try a hybrid attack or brute-force with a limited character set.
• For faster results, use a GPU with Hashcat and a large wordlist tailored to the context.