WeiUP is the first and only BSC token that brings together rebasing and automatic staking for ETH rewards. The rebasing or "elastic supply" allows the supply to be lowered hourly. Each negative rebase lowers the supply and provides a green candle, causing the chart to always go up, and the supply to constantly decrease. The supply will decrease every hour, causing each holder to lose tokens proportionally, while also increase the token price to maintain market cap. The ETH rewards are distributed evenly and fairly between all holders, rewarding them for holding. The tokenomics include a tax in order to automatically provide to liquidity pool, marketing wallet, and the ETH rewards.
Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)
WeiUp.swapBack() (#755-826) sends eth to arbitrary user
Dangerous calls:
- distributor.deposit{value: amountETHReward}() (#800)
- (success) = address(marketingFeeReceiver).call{gas: 30000,value: amountETHMarketing}() (#801-804)
- (success,None) = address(buyBackFeeReceiver).call{gas: 30000,value: amountETHBuyBack}() (#805-808)
- (success,None) = address(ecosystemFeeReceiver).call{gas: 30000,value: amountETHEco}() (#809-812)
Ensure that an arbitrary user cannot withdraw unauthorized funds.
Additional information: link
Reentrancy in WeiUp._transferFrom(address,address,uint256) (#828-907):
External calls:
- distributor.setShare(sender,0) (#853)
- distributor.setShare(sender,_gonBalances[sender].div(shareGonDivisor)) (#861-864)
- swapBack() (#868)
- router.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#777-783)
- distributor.deposit{value: amountETHReward}() (#800)
- (success) = address(marketingFeeReceiver).call{gas: 30000,value: amountETHMarketing}() (#801-804)
- (success,None) = address(buyBackFeeReceiver).call{gas: 30000,value: amountETHBuyBack}() (#805-808)
- (success,None) = address(ecosystemFeeReceiver).call{gas: 30000,value: amountETHEco}() (#809-812)
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#817-824)
External calls sending eth:
- swapBack() (#868)
- distributor.deposit{value: amountETHReward}() (#800)
- (success) = address(marketingFeeReceiver).call{gas: 30000,value: amountETHMarketing}() (#801-804)
- (success,None) = address(buyBackFeeReceiver).call{gas: 30000,value: amountETHBuyBack}() (#805-808)
- (success,None) = address(ecosystemFeeReceiver).call{gas: 30000,value: amountETHEco}() (#809-812)
- router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#817-824)
State variables written after the call(s):
- _gonBalances[sender] = _gonBalances[sender].sub(gonAmount) (#871)
- _gonBalances[recipient] = _gonBalances[recipient].add(gonAmountReceived) (#876-878)
- gonAmountReceived = takeFee(sender,gonAmount) (#873-875)
- _gonBalances[address(this)] = _gonBalances[address(this)].add(feeAmount) (#735-737)
Apply the check-effects-interactions pattern.
Additional information: link
DividendDistributor.distributeDividend(address) (#441-458) ignores return value by REWARD.transfer(shareholder,amount) (#449)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.
Additional information: link
Too many vulnerabilities (Unchecked transfer, Reentrancy vulnerability, etc.). High risk of a scam. DYOR & manual audit are advised.
WeiUp.swapBack().success (#801) is written in both
(success,None) = address(ecosystemFeeReceiver).call{gas: 30000,value: amountETHEco}() (#809-812)
success = false (#814)
Fix or remove the writes.
Additional information: link
Combination 1: Reentrancy vulnerabilities + Functions that send Ether to arbitraty destination. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.
Combination 2: Unchecked transfer + Functions that send Ether to arbitraty destination. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.
Combination 3: Reentrancy vulnerabilities + Unchecked transfer vulnerability. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.
Reentrancy in WeiUp.rebase(uint256,int256) (#612-638):
External calls:
- pairContract.sync() (#634)
Event emitted after the call(s):
- OwnershipTransferred(_owner,newOwner) (#73)
- LogRebase(epoch,_totalSupply) (#636)
Apply the check-effects-interactions pattern.
Additional information: link
WeiUp.slitherConstructorVariables() (#510-1315) performs a multiplication on the result of a division:
-gonMaxWallet = TOTAL_GONS.div(100).mul(100) (#547)
Consider ordering multiplication before division.
Additional information: link
Reentrancy in DividendDistributor.setShare(address,uint256) (#362-382):
External calls:
- distributeDividend(shareholder) (#368)
- REWARD.transfer(shareholder,amount) (#449)
State variables written after the call(s):
- shares[shareholder].amount = amount (#378)
- shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount) (#379-381)
Apply the check-effects-interactions pattern.
Additional information: link
WeiUp.swapBack() (#755-826) ignores return value by router.addLiquidityETH{value: amountETHLiquidity}(address(this),amountToLiquify,0,0,autoLiquidityReceiver,block.timestamp) (#817-824)
Ensure that all the return values of the function calls are used.
Additional information: link
WeiUp.setMaster(address) (#678-680) should emit an event for:
- master = _master (#679)
Emit an event for critical parameter changes.
Additional information: link
WeiUp.setFees(uint256,uint256,uint256,uint256,uint256,uint256) (#1134-1154) should emit an event for:
- ecosystemFee = _ecosystemFee (#1142)
- liquidityFee = _liquidityFee (#1143)
- buyBackFee = _buyBackFee (#1144)
- marketingFee = _marketingFee (#1145)
- rewardFee = _rewardFee (#1146)
- totalFee = ecosystemFee.add(liquidityFee).add(marketingFee).add(buyBackFee).add(rewardFee) (#1147-1151)
- feeDenominator = _feeDenominator (#1152)
Emit an event for critical parameter changes.
Additional information: link
WeiUp.clearStuckBalance(uint256,address).adr (#1207) lacks a zero-check on :
- address(adr).transfer((amountETH * amountPercentage) / 100) (#1212)
Check that the address is not zero.
Additional information: link
WeiUp.multiSend_v2(address,address[],uint256) (#1264-1294) has external calls inside a loop: distributor.setShare(recipients[i],_gonBalances[recipients[i]].div(shareGonDivisor)) (#1277-1282)
Favor pull over push strategy for external calls.
Additional information: link
Reentrancy in DividendDistributor.setShare(address,uint256) (#362-382):
External calls:
- distributeDividend(shareholder) (#368)
- REWARD.transfer(shareholder,amount) (#449)
State variables written after the call(s):
- addShareholder(shareholder) (#372)
- shareholderIndexes[shareholder] = shareholders.length (#495)
- removeShareholder(shareholder) (#374)
- shareholderIndexes[shareholders[shareholders.length - 1]] = shareholderIndexes[shareholder] (#503-505)
- addShareholder(shareholder) (#372)
- shareholders.push(shareholder) (#496)
- removeShareholder(shareholder) (#374)
- shareholders[shareholderIndexes[shareholder]] = shareholders[shareholders.length - 1] (#500-502)
- shareholders.pop() (#506)
- totalShares = totalShares.sub(shares[shareholder].amount).add(amount) (#377)
Apply the check-effects-interactions pattern.
Additional information: link
WeiUp._transferFrom(address,address,uint256) (#828-907) uses timestamp for comparisons
Dangerous comparisons:
- dividendLockTimer[recipient] < block.timestamp && isDividendLocked[recipient] && ! isDividendExempt[recipient] (#856-858)
Avoid relying on block.timestamp.
Additional information: link
DividendDistributor.process(uint256) (#403-429) has costly operations inside a loop:
- currentIndex ++ (#426)
Use a local variable to hold the loop computation result.
Additional information: link
WeiUp.transferToAddressETH(address,uint256) (#1215-1219) is never used and should be removed
Remove unused functions.
Additional information: link
WeiUp.totalFee (#554-557) is set pre-construction with a non-constant function or state variable:
- ecosystemFee.add(liquidityFee).add(marketingFee).add(buyBackFee).add(rewardFee)
Remove any initialization of state variables via non-constant state variables or function calls. If variables must be set upon contract deployment, locate initialization in the constructor instead.
Additional information: link
Pragma version^0.7.4 (#29) allows old versions
Deploy with any of the following Solidity versions: 0.5.16 - 0.5.17, 0.6.11 - 0.6.12, 0.7.5 - 0.7.6 Use a simple pragma version that allows any of these versions. Consider using the latest version of Solidity for testing.
Additional information: link
Low level call in WeiUp.swapBack() (#755-826):
- (success) = address(marketingFeeReceiver).call{gas: 30000,value: amountETHMarketing}() (#801-804)
- (success,None) = address(buyBackFeeReceiver).call{gas: 30000,value: amountETHBuyBack}() (#805-808)
- (success,None) = address(ecosystemFeeReceiver).call{gas: 30000,value: amountETHEco}() (#809-812)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
Variable WeiUp.ZERO (#567) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
Variable IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#247) is too similar to IDEXRouter.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#248)
Prevent variables from having similar names.
Additional information: link
WeiUp.slitherConstructorVariables() (#510-1315) uses literals with too many digits:
- distributorGas = 500000 (#598)
Use: Ether suffix, Time suffix, or The scientific notation
Additional information: link
SafeMathInt.MAX_INT256 (#172) is never used in SafeMathInt (#170-203)
Remove unused state variables.
Additional information: link
WeiUp.shareGonDivisor (#602) should be constant
Add the constant attributes to state variables that never change.
Additional information: link
rescueToken_v2(address,uint256,address) should be declared external:
- WeiUp.rescueToken_v2(address,uint256,address) (#1198-1205)
Use the external attribute for functions never called from the contract.
Additional information: link
Average PancakeSwap trading volume, liqudity, number of swaps are extremely low. Token seems to be dead.
Token is deployed only at one blockchain
Token has only one trading pair
Unable to find PancakeSwap trading pair to compute liquidity.
Unable to find PancakeSwap trading pair to compute volume.
Unable to find PancakeSwap trading pair to compute number of swaps.
BscScan page for the token does not contain additional info: website, socials, description, etc.
Additional information: link
Token was delisted (assigned to inactive / untracked listing) from CoinMarketCap
Additional information: link
Unable to find token contract audit
Unable to find audit link on the website
Unable to find Twitter link on the website
Unable to find token on CoinHunt
Additional information: link
Unable to find code repository for the project
Young tokens have high risks of price dump / death
Young tokens have high risks of scam / price dump / death
Young tokens have high risks of scam / price dump / death
Token has no active CoinMarketCap listing / rank
Token has relatively low CoinGecko rank
Twitter account link seems to be invalid
Telegram account has relatively few subscribers
Unable to find Blog account (Reddit or Medium)
Unable to find Youtube account
Unable to find Discord account