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GRX [GravitX] Token

About GRX

Listings

Token 14 months
CoinMarketCap 14 months

GRX is an elastic supply token build on the Binance smart chain, designed to rise by a minimum of 12% every 8 hours. That's the best rate of rise guarantee you can find !

How does it work?
An elastic supply (or rebase) token works in a way that the circulating supply expands or contracts due to changes in token price.
This increase or decrease in supply works with a mechanism called re-basing. When a rebase occurs, the supply of the token is increased or decreased algorithmically, based on the current price of each token. In some ways, elastic supply tokens can be paralleled with stablecoins.

They aim to achieve a target price, and these re-base mechanics facilitate that. However, the key difference is that rebasing tokens aim to achieve it with a changing (elastic) supply. GRX differs by having an increasing peg price and no positive rebases, making GRX an AntiGravity upcoin. We called this new tech the AntiGravity Contract.

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Laser Scorebeta Last Audit: 30 November 2021

report
Token has too many issues. Scam probability is high.

Anti-Scam

Links


Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)

GRX.addLiquidity(uint256,uint256) (contracts/GRX.sol#954-968) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH.value(ethAmount)(address(this),tokenAmount,0,0,address(this),block.timestamp.add(300)) (contracts/GRX.sol#960-967)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in GRX._transfer(address,address,uint256) (contracts/GRX.sol#796-831):
External calls:
- swapAndLiquify(numTokensSell) (contracts/GRX.sol#818)
- uniswapV2Router.addLiquidityETH.value(ethAmount)(address(this),tokenAmount,0,0,address(this),block.timestamp.add(300)) (contracts/GRX.sol#960-967)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp.add(300)) (contracts/GRX.sol#928-934)
- buyBackTokens(buybackLimit.div(buybackDivisor)) (contracts/GRX.sol#824)
- uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens.value(amount)(0,path,deadAddress,block.timestamp.add(300)) (contracts/GRX.sol#945-950)
External calls sending eth:
- swapAndLiquify(numTokensSell) (contracts/GRX.sol#818)
- recipient.transfer(amount) (contracts/GRX.sol#914)
- uniswapV2Router.addLiquidityETH.value(ethAmount)(address(this),tokenAmount,0,0,address(this),block.timestamp.add(300)) (contracts/GRX.sol#960-967)
- buyBackTokens(buybackLimit.div(buybackDivisor)) (contracts/GRX.sol#824)
- uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens.value(amount)(0,path,deadAddress,block.timestamp.add(300)) (contracts/GRX.sol#945-950)
State variables written after the call(s):
- _tokenTransfer(from,to,value) (contracts/GRX.sol#828)
- _gonBalances[sender] = _gonBalances[sender].sub(gonValue) (contracts/GRX.sol#854)
- _gonBalances[address(this)] = _gonBalances[address(this)].add(rFee) (contracts/GRX.sol#873)
- _gonBalances[recipient] = _gonBalances[recipient].add(gonValue) (contracts/GRX.sol#855)
- _gonBalances[sender] = _gonBalances[sender].sub(gonDeduct) (contracts/GRX.sol#846)
- _gonBalances[recipient] = _gonBalances[recipient].add(gonValue) (contracts/GRX.sol#847)
- buyBackTokens(buybackLimit.div(buybackDivisor)) (contracts/GRX.sol#824)
- inSwapAndLiquify = true (contracts/GRX.sol#629)
- inSwapAndLiquify = false (contracts/GRX.sol#631)
Apply the check-effects-interactions pattern.

Additional information: link

GRX.burnAutoLP() (contracts/GRX.sol#1075-1081) ignores return value by uniswapV2Pair.transfer(owner(),balance) (contracts/GRX.sol#1080)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link

Ownable._lockTime (contracts/GRX.sol#265) is never initialized. It is used in:
- Ownable.getUnlockTime() (contracts/GRX.sol#316-318)
- Ownable.unlock() (contracts/GRX.sol#329-334)
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

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.

GRX.setMaster(address) (contracts/GRX.sol#719-725) should emit an event for:
- master = _master (contracts/GRX.sol#724)
Emit an event for critical parameter changes.

Additional information: link

GRX.addLiquidity(uint256,uint256) (contracts/GRX.sol#954-968) ignores return value by uniswapV2Router.addLiquidityETH.value(ethAmount)(address(this),tokenAmount,0,0,address(this),block.timestamp.add(300)) (contracts/GRX.sol#960-967)
Ensure that all the return values of the function calls are used.

Additional information: link

GRX._approve(address,address,uint256).owner (contracts/GRX.sol#989) shadows:
- Ownable.owner() (contracts/GRX.sol#286-288) (function)
Rename the local variables that shadow another component.

Additional information: link

GRX.burnBNB(address).burnAddress (contracts/GRX.sol#1105) lacks a zero-check on :
- burnAddress.transfer(address(this).balance) (contracts/GRX.sol#1106)
Check that the address is not zero.

Additional information: link

Reentrancy in GRX.transferFrom(address,address,uint256) (contracts/GRX.sol#779-787):
External calls:
- _transfer(sender,recipient,amount) (contracts/GRX.sol#784)
- uniswapV2Router.addLiquidityETH.value(ethAmount)(address(this),tokenAmount,0,0,address(this),block.timestamp.add(300)) (contracts/GRX.sol#960-967)
- uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens.value(amount)(0,path,deadAddress,block.timestamp.add(300)) (contracts/GRX.sol#945-950)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp.add(300)) (contracts/GRX.sol#928-934)
External calls sending eth:
- _transfer(sender,recipient,amount) (contracts/GRX.sol#784)
- recipient.transfer(amount) (contracts/GRX.sol#914)
- uniswapV2Router.addLiquidityETH.value(ethAmount)(address(this),tokenAmount,0,0,address(this),block.timestamp.add(300)) (contracts/GRX.sol#960-967)
- uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens.value(amount)(0,path,deadAddress,block.timestamp.add(300)) (contracts/GRX.sol#945-950)
State variables written after the call(s):
- _approve(sender,msg.sender,_allowedFragments[sender][msg.sender].sub(amount)) (contracts/GRX.sol#785)
- _allowedFragments[owner][spender] = value (contracts/GRX.sol#993)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in GRX.transferFrom(address,address,uint256) (contracts/GRX.sol#779-787):
External calls:
- _transfer(sender,recipient,amount) (contracts/GRX.sol#784)
- uniswapV2Router.addLiquidityETH.value(ethAmount)(address(this),tokenAmount,0,0,address(this),block.timestamp.add(300)) (contracts/GRX.sol#960-967)
- uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens.value(amount)(0,path,deadAddress,block.timestamp.add(300)) (contracts/GRX.sol#945-950)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp.add(300)) (contracts/GRX.sol#928-934)
External calls sending eth:
- _transfer(sender,recipient,amount) (contracts/GRX.sol#784)
- recipient.transfer(amount) (contracts/GRX.sol#914)
- uniswapV2Router.addLiquidityETH.value(ethAmount)(address(this),tokenAmount,0,0,address(this),block.timestamp.add(300)) (contracts/GRX.sol#960-967)
- uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens.value(amount)(0,path,deadAddress,block.timestamp.add(300)) (contracts/GRX.sol#945-950)
Event emitted after the call(s):
- Approval(owner,spender,value) (contracts/GRX.sol#994)
- _approve(sender,msg.sender,_allowedFragments[sender][msg.sender].sub(amount)) (contracts/GRX.sol#785)
Apply the check-effects-interactions pattern.

Additional information: link

Ownable.unlock() (contracts/GRX.sol#329-334) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(now > _lockTime,Contract is locked until 7 days) (contracts/GRX.sol#331)
Avoid relying on block.timestamp.

Additional information: link

SafeMathInt.sub(int256,int256) (contracts/GRX.sol#465-473) is never used and should be removed
Remove unused functions.

Additional information: link

Parameter GRX.setnumTokensSellDivisor(uint256)._numTokensSellDivisor (contracts/GRX.sol#1102) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Reentrancy in GRX.transferFrom(address,address,uint256) (contracts/GRX.sol#779-787):
External calls:
- _transfer(sender,recipient,amount) (contracts/GRX.sol#784)
- recipient.transfer(amount) (contracts/GRX.sol#914)
External calls sending eth:
- _transfer(sender,recipient,amount) (contracts/GRX.sol#784)
- recipient.transfer(amount) (contracts/GRX.sol#914)
- uniswapV2Router.addLiquidityETH.value(ethAmount)(address(this),tokenAmount,0,0,address(this),block.timestamp.add(300)) (contracts/GRX.sol#960-967)
- uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens.value(amount)(0,path,deadAddress,block.timestamp.add(300)) (contracts/GRX.sol#945-950)
State variables written after the call(s):
- _approve(sender,msg.sender,_allowedFragments[sender][msg.sender].sub(amount)) (contracts/GRX.sol#785)
- _allowedFragments[owner][spender] = value (contracts/GRX.sol#993)
Event emitted after the call(s):
- Approval(owner,spender,value) (contracts/GRX.sol#994)
- _approve(sender,msg.sender,_allowedFragments[sender][msg.sender].sub(amount)) (contracts/GRX.sol#785)
Apply the check-effects-interactions pattern.

Additional information: link

Variable IUniswapV2Router02.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (contracts/GRX.sol#129) is too similar to IUniswapV2Router02.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (contracts/GRX.sol#130)
Prevent variables from having similar names.

Additional information: link

GRX.slitherConstructorVariables() (contracts/GRX.sol#557-1110) uses literals with too many digits:
- deadAddress = 0x000000000000000000000000000000000000dEaD (contracts/GRX.sol#617)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

GRX.privateSaleDropCompleted (contracts/GRX.sol#626) is never used in GRX (contracts/GRX.sol#557-1110)
Remove unused state variables.

Additional information: link

Ownable._lockTime (contracts/GRX.sol#265) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

setnumTokensSellDivisor(uint256) should be declared external:
- GRX.setnumTokensSellDivisor(uint256) (contracts/GRX.sol#1102-1103)
Use the external attribute for functions never called from the contract.

Additional information: link

Holders:


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.


Twitter account link seems to be invalid


Unable to find Youtube account


Unable to find Discord account


Unable to crawl data from the website


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/project description on the website or on BscScan, CoinMarketCap


Unable to find token contract audit


Unable to verify token contract address on the website


Unable to find audit link on the website


Unable to find whitepaper link on the website


Unable to find Telegram link on the website


Unable to find Twitter link on the website


Unable to find token on CoinHunt

Additional information: link


Young tokens have high risks of scam / price dump / death


Token has no active CoinMarketCap listing / rank


Young tokens have high risks of price dump / death


Token has relatively low CoinGecko rank

Price for GRX