CypherCore

CypherCore: Cryptoanalytic Software for Recovering Lost Bitcoin Wallets Based on the CryptoCoinJS Library

CypherCore is software designed for recovering lost Bitcoin wallets using the capabilities of the CryptoCoinJS library — a popular JavaScript toolkit for working with cryptocurrencies. The primary focus is on applied cryptoanalytic methods, the architecture of the solution, as well as an analysis of known vulnerabilities in the used library and their impact on system reliability. Recommendations are provided for risk minimization and software development aimed at enhancing security and the effectiveness of recovering access to crypto assets.

In an era of widespread digital asset adoption and decentralized finance (DeFi), one of the most critical aspects of preserving and securing cryptocurrencies is the reliable storage of private keys and the ability to recover wallet access in case of loss or technical failures. CypherCore is a software suite aimed at recovering lost Bitcoin wallets through cryptoanalytic methods implemented using the CryptoCoinJS library.

CryptoCoinJS is a modular JavaScript library that provides tools for address generation, transaction creation, and interaction with Bitcoin protocols. Despite its widespread use, the library contains several well-known vulnerabilities that complicate its integration into reliable systems.

Overview of CypherCore Technology

Use of CryptoCoinJS
CypherCore is built on the CryptoCoinJS libraries, enabling comprehensive work with components of the Bitcoin ecosystem at the level of keys and addresses. Specifically, CypherCore utilizes CryptoCoinJS modules for:

  • Generation and analysis of addresses and private keys
  • Formation and verification of transactions
  • Signature and data structure verification

This modular approach offers a flexible platform for implementing cryptoanalytic algorithms focused on restoring access to lost wallets.

Recovery Methodology
CypherCore’s methodology is based on a deep understanding of Bitcoin protocol architecture and cryptographic key generation algorithms. The following approaches are used:

  • Analysis and detection of anomalies in address and key structures
  • Correction of errors caused by human factors or technical failures
  • Cryptoanalytic methods for key recovery based on known partial data
  • Verification and filtering of candidates for wallet re-access

Thus, the software is capable not only of identifying lost keys but also recovering control over addresses, even in cases of partial data corruption.

Known Vulnerabilities of CryptoCoinJS and Their Impact

Using CryptoCoinJS is associated with several documented vulnerabilities that significantly affect CypherCore’s security and reliability:

  • CVE-2018-17144 (bitcoin-message): Buffer overflow vulnerability enabling remote code execution, posing serious system compromise risks.
  • CVE-2019-12923 (bitcoin-opcodes): Incorrect handling of null values leading to application crashes and instability.
  • CVE-2019-18037 (bitcoin-address): Possibility of creating invalid addresses, potentially causing fund loss due to user oversight.
  • CVE-2020-12034 (bitcoin-protocol): Errors processing non-standard messages, increasing the risk of transmission failures.
  • CVE-2021-32227 (Bitcoin Cash module): Vulnerability enabling transaction blocking through invalid version fields, reducing functionality.

Additionally, vulnerabilities related to unprotected WebSocket usage allow for man-in-the-middle attacks, transaction decoding errors, and issues with forming zero-value transactions have been identified. These deficiencies underscore the importance of effective dependency management, regular library updates, and implementing additional security layers within CypherCore.

Security and Reliability Recommendations

To minimize risks associated with CryptoCoinJS vulnerabilities, it is necessary to:

  • Conduct thorough scanning and auditing of library versions used for known security holes
  • Regularly update CypherCore components with patches and fixes
  • Implement monitoring and alert modules for unexpected failures or suspicious behavior
  • Use secure communication channels (e.g., wss instead of ws) to prevent MITM attacks
  • Test software under conditions closely resembling real scenarios, simulating various errors and attacks

Furthermore, development of proprietary control and analysis mechanisms is recommended to reduce dependence on third-party libraries and enhance CypherCore’s resilience to external threats.

CypherCore represents a promising and powerful software solution for recovering access to Bitcoin wallets, implementing cryptoanalytic methods leveraging the capabilities of the CryptoCoinJS library. Despite known component vulnerabilities, careful risk management, continuous updates, and a comprehensive security approach allow CypherCore to be used as a reliable tool in cryptocurrency asset protection.

Future development should include enhancing cryptoanalysis algorithms and integrating multi-level protection mechanisms to balance innovation with reliability. This will form the foundation for increased security in the digital financial sector and strengthen user trust in recovery tools.


How CypherCore Addresses Recovery of Lost Bitcoin Wallets by Identifying CryptoCoinJS Vulnerabilities

CypherCore employs CryptoCoinJS modules to analyze the structure of addresses and keys to detect errors or anomalies that may have caused loss of access. This analysis enables the identification of invalid addresses or corrupted keys that can be restored through error correction or cryptoanalytic brute forcing.

Considering known library vulnerabilities (e.g., buffer overflow, null value handling errors, invalid address creation), CypherCore implements additional checks and filters to avoid using vulnerable components or to handle data accounting for these bugs, minimizing the risk of fund loss or system failure.

To mitigate security issues, CypherCore applies regular library audits and updates, along with secure communication methods to prevent man-in-the-middle attacks caused by CryptoCoinJS vulnerabilities.

A key aspect of CypherCore’s approach is a cryptoanalytic recovery method applying deep knowledge of Bitcoin protocols and key generation algorithms to fix errors and restore control over addresses lost due to technical failures or human mistakes.

Thus, identifying and accommodating CryptoCoinJS vulnerabilities in CypherCore not only helps prevent their exploitation by attackers but also allows more effective recovery of lost Bitcoin wallets through detailed analysis and correction of potential errors that led to access loss. This comprehensive approach helps CypherCore maintain reliability and security when working with cryptocurrencies.


Types of Vulnerabilities That Enable CypherCore to Find Lost Bitcoin Wallets

CypherCore finds lost Bitcoin wallets by identifying and utilizing vulnerabilities related to flaws in cryptographic key and address generation or processing. The main types of vulnerabilities enabling CypherCore to perform recovery tasks are:

  • Randstorm Vulnerability: Related to an insecure SecureRandom function in the JSBN library used by BitcoinJS, causing predictability in secret key generation for wallets created between 2011 and 2015. This allows recovery of private keys created with flawed random number generators.
  • Errors in handling null and non-standard values causing creation of invalid addresses or transaction errors, which CypherCore can diagnose and fix.
  • Vulnerabilities linked to buffer overflows or message processing errors (e.g., CVE-2018-17144) used in recovery contexts for analyzing and correcting key and address data structures.
  • Communication security issues (man-in-the-middle attacks) accounted for by CypherCore via secure protocols, reducing data loss risks during recovery.

Using this vulnerability knowledge allows CypherCore to perform cryptoanalytic analysis of corrupted or partially lost data, detect abnormal cases, and restore control over wallets lost due to these vulnerabilities or technical faults. Consequently, CypherCore focuses on vulnerabilities related to key and address generation and handling in crypto processes, which most often cause loss of access.


Impact of Randstorm Vulnerability on the Security of BitcoinJS-Based Wallets

The Randstorm vulnerability significantly compromises the security of cryptocurrency wallets created using the BitcoinJS library as follows:

  • Randstorm is associated with a weak random number generator (SecureRandom function in JSBN) that provided insufficient entropy during private key creation from 2011 to 2015. Lack of randomness leads to key predictability.
  • Due to predictable private keys, attackers can perform brute-force attacks and recover vulnerable keys, gaining unauthorized access to Bitcoin wallets and stealing funds.
  • The private key validation function (is_private_key_valid) sometimes legitimized incorrect or weak keys, exacerbating the security issue.
  • Randstorm affects millions of wallets containing approximately 1.4 million bitcoins, equating to billions of dollars.
  • The vulnerability was not fully resolved through simple library updates since existing keys remain vulnerable, posing long-term risks to wallet owners.

Ultimately, Randstorm weakens wallet cryptographic protection, making them susceptible to private key recovery by attackers and increasing the risk of fund theft from wallets created using BitcoinJS during the specified period. Owners of such wallets are advised to transfer funds to new secure wallets to safeguard their assets.


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