SAP CODVN B (BCODE) Hash

What is SAP CODVN B (BCODE)?

The **SAP CODVN B (BCODE)** hash format is a proprietary cryptographic hash derived from SAP’s internal authentication and authorization infrastructure, primarily used within SAP NetWeaver systems for user password storage and validation. Originating in the mid-2000s as part of SAP’s **BCODE** (Base Code) framework, this algorithm was designed to store hashed credentials in a reversible yet obfuscated form, enabling compatibility with legacy systems while maintaining some level of security. Structurally, CODVN B employs a multi-step process: passwords are first hashed using a **MD5-based** variant with a fixed-length salt (typically 8 bytes), followed by a **custom XOR-based obfuscation layer** and a final **base64 encoding** step. Unlike standard password hashes, CODVN B does not adhere to modern cryptographic best practices—its design prioritizes backward compatibility with SAP’s proprietary authentication protocols rather than security resilience, making it vulnerable to targeted attacks.

The **CODVN B** format is highly susceptible to cracking due to its **predictable structure, lack of adaptive work factors, and reliance on weak cryptographic primitives**. The fixed-length salt (often hardcoded or derived from the username) enables **rainbow table precomputation**, allowing attackers to pregenerate hashes for all possible salted inputs. Additionally, the underlying **MD5 hashing** is inherently collision-prone and vulnerable to **length-extension attacks**, while the XOR obfuscation layer provides negligible security—modern GPUs can brute-force CODVN B hashes at rates exceeding **millions per second** using optimized tools like **Hashcat** with the `-m 16000` mode. The absence of **key stretching (e.g., PBKDF2, bcrypt, or Argon2)** means the hash remains computationally trivial to crack even with minimal hardware acceleration, rendering it unsuitable for modern security standards.

Identifying SAP CODVN B (BCODE) Hashes

Identifying a hash blindly is often difficult because multiple algorithms can output strings of the exact same length. For example, a standard 32-character hexadecimal string could be MD5, NTLM, MD4, or LM. To definitively identify SAP CODVN B (BCODE), security researchers analyze the hash against a strict regular expression (regex) signature (shown above) to find structural matches.

How to Crack SAP CODVN B (BCODE)

If you need to recover the plaintext password for a SAP CODVN B (BCODE) hash during a penetration test or forensics investigation, you must supply the correct module ID to your cracking software. Use the exact commands provided at the top of this page to target the hash successfully.