Submission Details
Severity:
`RapBattle.sol::_battle` has a weak PRNG, leading to a challenger manipulation of the battle results
Description:
Weak PRNG due to a modulo on block.timestamp, now or blockhash. These can be influenced by miners to some extent so they should be avoided.
Impact:
A challenger can manipulate the battle result to won the bet.
Proof of Concept:
Reference: https://github.com/crytic/slither/wiki/Detector-Documentation#weak-PRNG
Recommendation:
Do not use block.timestamp, now or blockhash as a source of randomness
Rewards breakdown
nSLOC
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100 EXP
20 EXP
2 EXP
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