Withdraw money from your account
This is an online wallet. There is a function to create and transfer funds between accounts. To be flagged, more than 150 or negative funds must be withdrawn from the account.
1 create wallet
2 Transfer token from Default Wallet to lnwza 99.98789745489548949849848974849841889494984984848498498419849849849484849494949849498494984985415418694865941895641851861896194189548941894198418941841984984984948484949494984949849498498541541869486594189564185186189619418954894189419841894184
3 Transfer from Default wallet to another 0.012102545104525575
4 press withdraw
VolgaCTF{3723759ca308887d334afe8074ec9c23}
Node JSON.parse(‘{“amount”:100000000000000000000000000000000000000000000000000000000000001E-60}’).amount 100 MySQL select json_extract(‘{“amount”:100000000000000000000000000000000000000000000000000000000000001E-60}’, ‘$.amount’); 100.00000000000001
Due to different roundings in parsing, it was possible to take the balance into minus (Round-off error)