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Parallax
Smart Contract Security Audit
TechRate
January, 2022
Disclaimer
This is a limited report on our findings based on our analysis, in accordance with
good industry practice as at the date of this report, in relation to cybersecurity
vulnerabilities and issues in the framework and algorithms based on smart contracts,
the details of which are set out in this report. In order to get a full view of our
analysis, it is crucial for you to read the full report. While we have done our best in
conducting our analysis and producing this report, it is important to note that you
should not rely on this report and cannot claim against us on the basis of what it says
or doesn’t say, or how we produced it, and it is important for you to conduct your own
independent investigations before making any decisions. We go into more detail on
this in the below disclaimer below – please make sure to read it in full.
DISCLAIMER: By reading this report or any part of it, you agree to the terms of this
disclaimer. If you do not agree to the terms, then please immediately cease reading
this report, and delete and destroy any and all copies of this report downloaded
and/or printed by you. This report is provided for information purposes only and on a
non-reliance basis, and does not constitute investment advice. No one shall have any
right to rely on the report or its contents, and TechRate and its affiliates (including
holding companies, shareholders, subsidiaries, employees, directors, officers and
other representatives) (TechRate) owe no duty of care towards you or any other
person, nor does TechRate make any warranty or representation to any person on
the accuracy or completeness of the report. The report is provided "as is", without
any conditions, warranties or other terms of any kind except as set out in this
disclaimer, and TechRate hereby excludes all representations, warranties,
conditions and other terms (including, without limitation, the warranties implied by
law of satisfactory quality, fitness for purpose and the use of reasonable care and
skill) which, but for this clause, might have effect in relation to the report. Except and
only to the extent that it is prohibited by law, TechRate hereby excludes all liability
and responsibility, and neither you nor any other person shall have any claim against
TechRate, for any amount or kind of loss or damage that may result to you or any
other person (including without limitation, any direct, indirect, special, punitive,
consequential or pure economic loss or damages, or any loss of income, profits,
goodwill, data, contracts, use of money, or business interruption, and whether in
delict, tort (including without limitation negligence), contract, breach of statutory
duty, misrepresentation (whether innocent or negligent) or otherwise under any
claim of any nature whatsoever in any jurisdiction) in any way arising from or
connected with this report and the use, inability to use or the results of use of this
report, and any reliance on this report.
The analysis of the security is purely based on the smart contracts alone. No
applications or operations were reviewed for security. No product code has been
reviewed.
Background
TechRate was commissioned by Parallax to perform an audit of smart
contracts:
https://testnet.bscscan.com/address/0x70d2ace4f5c69b3298d92d85ffb6d274c1e88f
eb#code
The purpose of the audit was to achieve the following:
● Ensure that the smart contract functions as intended.
● Identify potential security issues with the smart contract.
The information in this report should be used to understand the risk exposure of the
smart contract, and as a guide to improve the security posture of the smart contract
by remediating the issues that were identified.
Issues Checking Status
Issue description Checking status
1. Compiler errors. Passed
2. Race conditions and Reentrancy. Cross-function race
conditions.
Passed
3. Possible delays in data delivery. Passed
4. Oracle calls. Passed
5. Front running. Passed
6. Timestamp dependence. Passed
7. Integer Overflow and Underflow. Passed
8. DoS with Revert. Passed
9. DoS with block gas limit. Passed
10. Methods execution permissions. Passed
11. Economy model of the contract. Passed
12. The impact of the exchange rate on the logic. Passed
13. Private user data leaks. Passed
14. Malicious Event log. Passed
15. Scoping and Declarations. Passed
16. Uninitialized storage pointers. Passed
17. Arithmetic accuracy. Passed
18. Design Logic. Passed
19. Cross-function race conditions. Passed
20. Safe Open Zeppelin contracts implementation and
usage.
Passed
21. Fallback function security. Passed
Security Issues
High Severity Issues
No high severity issues found.
Medium Severity Issues
No medium severity issues found.
Low Severity Issues
No low severity issues found.
Owner privileges (In the period when the owner is not
renounced)
• Owner can change _arrayLength value.
• Owner can enable trading.
• Owner can disable launchPhase.
• Owner can blacklist and authorize addresses.
• Owner can exclude from the fee.
• Owner can mark addresses as pairs.
• Owner can change fees.
• Owner can change triggerTokens value.
• Owner can enable/disable noFeeToTransfer.
• Owner can change the maximum transaction amount and maximum
wallet token.
• Owner can withdraw contract ERC20 tokens.
• Owner can change router and pair addresses.
Conclusion
Smart contracts do not contain high severity issues! Liquidity pair
contract’s security is not checked due to out of scope.
Liquidity locking details are NOT provided by the team.
TechRate note:
Please check the disclaimer above and note, the audit makes no
statements or warranties on business model, investment
attractiveness or code sustainability. The report is provided for the
only contract mentioned in the report and does not include any
other potential contracts deployed by Owner.

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Parallax DeFi [PRLX] BSC BEP-20 | Techrate Final Audit

  • 1. Parallax Smart Contract Security Audit TechRate January, 2022
  • 2. Disclaimer This is a limited report on our findings based on our analysis, in accordance with good industry practice as at the date of this report, in relation to cybersecurity vulnerabilities and issues in the framework and algorithms based on smart contracts, the details of which are set out in this report. In order to get a full view of our analysis, it is crucial for you to read the full report. While we have done our best in conducting our analysis and producing this report, it is important to note that you should not rely on this report and cannot claim against us on the basis of what it says or doesn’t say, or how we produced it, and it is important for you to conduct your own independent investigations before making any decisions. We go into more detail on this in the below disclaimer below – please make sure to read it in full. DISCLAIMER: By reading this report or any part of it, you agree to the terms of this disclaimer. If you do not agree to the terms, then please immediately cease reading this report, and delete and destroy any and all copies of this report downloaded and/or printed by you. This report is provided for information purposes only and on a non-reliance basis, and does not constitute investment advice. No one shall have any right to rely on the report or its contents, and TechRate and its affiliates (including holding companies, shareholders, subsidiaries, employees, directors, officers and other representatives) (TechRate) owe no duty of care towards you or any other person, nor does TechRate make any warranty or representation to any person on the accuracy or completeness of the report. The report is provided "as is", without any conditions, warranties or other terms of any kind except as set out in this disclaimer, and TechRate hereby excludes all representations, warranties, conditions and other terms (including, without limitation, the warranties implied by law of satisfactory quality, fitness for purpose and the use of reasonable care and skill) which, but for this clause, might have effect in relation to the report. Except and only to the extent that it is prohibited by law, TechRate hereby excludes all liability and responsibility, and neither you nor any other person shall have any claim against TechRate, for any amount or kind of loss or damage that may result to you or any other person (including without limitation, any direct, indirect, special, punitive, consequential or pure economic loss or damages, or any loss of income, profits, goodwill, data, contracts, use of money, or business interruption, and whether in delict, tort (including without limitation negligence), contract, breach of statutory duty, misrepresentation (whether innocent or negligent) or otherwise under any claim of any nature whatsoever in any jurisdiction) in any way arising from or connected with this report and the use, inability to use or the results of use of this report, and any reliance on this report. The analysis of the security is purely based on the smart contracts alone. No applications or operations were reviewed for security. No product code has been reviewed.
  • 3. Background TechRate was commissioned by Parallax to perform an audit of smart contracts: https://testnet.bscscan.com/address/0x70d2ace4f5c69b3298d92d85ffb6d274c1e88f eb#code The purpose of the audit was to achieve the following: ● Ensure that the smart contract functions as intended. ● Identify potential security issues with the smart contract. The information in this report should be used to understand the risk exposure of the smart contract, and as a guide to improve the security posture of the smart contract by remediating the issues that were identified.
  • 4. Issues Checking Status Issue description Checking status 1. Compiler errors. Passed 2. Race conditions and Reentrancy. Cross-function race conditions. Passed 3. Possible delays in data delivery. Passed 4. Oracle calls. Passed 5. Front running. Passed 6. Timestamp dependence. Passed 7. Integer Overflow and Underflow. Passed 8. DoS with Revert. Passed 9. DoS with block gas limit. Passed 10. Methods execution permissions. Passed 11. Economy model of the contract. Passed 12. The impact of the exchange rate on the logic. Passed 13. Private user data leaks. Passed 14. Malicious Event log. Passed 15. Scoping and Declarations. Passed 16. Uninitialized storage pointers. Passed 17. Arithmetic accuracy. Passed 18. Design Logic. Passed 19. Cross-function race conditions. Passed 20. Safe Open Zeppelin contracts implementation and usage. Passed 21. Fallback function security. Passed
  • 5. Security Issues High Severity Issues No high severity issues found. Medium Severity Issues No medium severity issues found. Low Severity Issues No low severity issues found. Owner privileges (In the period when the owner is not renounced) • Owner can change _arrayLength value. • Owner can enable trading. • Owner can disable launchPhase. • Owner can blacklist and authorize addresses. • Owner can exclude from the fee. • Owner can mark addresses as pairs. • Owner can change fees. • Owner can change triggerTokens value. • Owner can enable/disable noFeeToTransfer. • Owner can change the maximum transaction amount and maximum wallet token. • Owner can withdraw contract ERC20 tokens. • Owner can change router and pair addresses.
  • 6. Conclusion Smart contracts do not contain high severity issues! Liquidity pair contract’s security is not checked due to out of scope. Liquidity locking details are NOT provided by the team. TechRate note: Please check the disclaimer above and note, the audit makes no statements or warranties on business model, investment attractiveness or code sustainability. The report is provided for the only contract mentioned in the report and does not include any other potential contracts deployed by Owner.