Degens Money Degenerates
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The Degens Money platform was experimental in nature and required users to click past a number of warnings, at which point they gave full access to their ethereum wallet (and any held ERC20 tokens) to the platform. Once connected up, there was no easy way to revoke the granted permissions. Users had to follow the set of instructions written by another third party.
This is a global/international case not involving a specific country.[1][2][3][4][5][6][7][8][9][10][11][12][13]
About Degens Money
"A PLACE FOR EXTREME DEGEN FUN. PLAY IF YOU DARE." "Degens.money is created for ultimate and pure degen fun. $DEGEN is the yield farming token to end all yield farming tokens."
"Most of the code are forked from existing protocols such as Compound, Synthetix, which have been running on mainnet without known issues. We encourage you to do your own due diligence before playing." "WARNING: DO NOT INVEST AN AMOUNT YOU CANNOT LOSE."
"Another such case happened with a project called Degen Money, which used a slightly less sophisticated (but not less effective) approach. Rather than developing their own smart contract, they created a frontend that made two approval transactions. One to a functioning contract, and one to a completely different address. Because many people do not specifically check the contract addresses, this allowed the attackers to drain users' wallets."
A Twitter user named Nik Kunkel tweeted: "Funds are not SAFU (Degen.Money). Anyone who used the UX for yield farming is exposed to a double approval exploit. The first approval is for the staking contract, the second approval lets the attacker pull that token from your wallet!" YFI founder Andre Cronje commented on this tweet, saying, "I've confirmed this is accurate. They are approving your funds to themselves, they are currently using transferFrom to take funds from users. Please revoke approvals, withdrawing your funds is not sufficient."
"Anyone who used the UX for yieldfarming is exposed to a double approval exploit. The first approval is for the staking contract, the second approval lets the attacker pull that token from your wallet!"
"Push unique friends broke the news, DeFi liquidity mining project Degen.Money use dual licensing loopholes (Double Approval Exploit) to obtain the user money. YFI founder Andre Cronje also said on Twitter that the project is indeed risky and requires manual cancellation of authorization."
"A malicious approve bug has been found in our UI code. Please do not use http://degens.money for any action until further notice. You can follow https://twitter.com/nomos_paradox/status/1299215849018937345 to undo the malicious approvals. We sincerely apologize for this incident."
"Twitter users reported that DeFi's liquidity mining project Degen.Money exploited a double approval vulnerability to get users' Money. The first authorization gives the pledge contract, and the second authorization gives the right to transfer money, which will result in the user's funds being taken away by the attacker. YFI founder Andre Cronje says the project does have risks."
This is a global/international case not involving a specific country.
The background of the exchange platform, service, or individuals involved, as it would have been seen or understood at the time of the events.
Include:
- Known history of when and how the service was started.
- What problems does the company or service claim to solve?
- What marketing materials were used by the firm or business?
- Audits performed, and excerpts that may have been included.
- Business registration documents shown (fake or legitimate).
- How were people recruited to participate?
- Public warnings and announcements prior to the event.
Don't Include:
- Any wording which directly states or implies that the business is/was illegitimate, or that a vulnerability existed.
- Anything that wasn't reasonably knowable at the time of the event.
There could be more than one section here. If the same platform is involved with multiple incidents, then it can be linked to a main article page.
The Reality
This sections is included if a case involved deception or information that was unknown at the time. Examples include:
- When the service was actually started (if different than the "official story").
- Who actually ran a service and their own personal history.
- How the service was structured behind the scenes. (For example, there was no "trading bot".)
- Details of what audits reported and how vulnerabilities were missed during auditing.
What Happened
The specific events of the loss and how it came about. What actually happened to cause the loss and some of the events leading up to it.
| Date | Event | Description | 
|---|---|---|
| August 27th, 2020 | Main Event | Expand this into a brief description of what happened and the impact. If multiple lines are necessary, add them here. | 
Technical Details
This section includes specific detailed technical analysis of any security breaches which happened. What specific software vulnerabilities contributed to the problem and how were they exploited?
Total Amount Lost
The total amount lost is unknown.
How much was lost and how was it calculated? If there are conflicting reports, which are accurate and where does the discrepancy lie?
Immediate Reactions
How did the various parties involved (firm, platform, management, and/or affected individual(s)) deal with the events? Were services shut down? Were announcements made? Were groups formed?
Ultimate Outcome
What was the end result? Was any investigation done? Were any individuals prosecuted? Was there a lawsuit? Was any tracing done?
Total Amount Recovered
There do not appear to have been any funds recovered in this case.
What funds were recovered? What funds were reimbursed for those affected users?
Ongoing Developments
What parts of this case are still remaining to be concluded?
General Prevention Policies
In terms of the smart contract, this case involved unlimited permissions being granted, which is highly dangerous and exposed investors to risks they might not have realized beyond a standard liquidity pool. The vulnerable contract had not even been audited.
In general, smart contracts have a security profile similar to hot wallets. Human beings have a much stronger track record of detecting breaches, and a multi-sig of known individuals is generally safer than a smart contract.
Individual Prevention Policies
No specific policies for individual prevention have yet been identified in this case.
For the full list of how to protect your funds as an individual, check our Prevention Policies for Individuals guide.
Platform Prevention Policies
Policies for platforms to take to prevent this situation have not yet been selected in this case.
For the full list of how to protect your funds as a financial service, check our Prevention Policies for Platforms guide.
Regulatory Prevention Policies
No specific regulatory policies have yet been identified in this case.
For the full list of regulatory policies that can prevent loss, check our Prevention Policies for Regulators guide.
References
- ↑ Unlimited ERC20 allowances considered harmful (Jun 5, 2021)
- ↑ @nomos_paradox Twitter (Jun 5, 2021)
- ↑ Degen.Money Is Exposed To Obtain User Funds Through Double Approval | CoinNess (Jun 13, 2021)
- ↑ @DegensMoney Twitter (Jun 13, 2021)
- ↑ Chengdu Lianan: In August, there were 5 security incidents in the DeFi field, and a total of 39 incidents in the blockchain field • Blockcast.cc- News on Blockchain, DLT, Cryptocurrency (Jun 13, 2021)
- ↑ Degens Money (Jun 13, 2021)
- ↑ Degens Money For Pure Degen Fun (Jun 13, 2021)
- ↑ Dive Into De-Fi: Don't Be A Degen (Jun 20, 2021)
- ↑ What are the possible security risks of unlimited token authorization? • Blockcast.cc- News on Blockchain, DLT, Cryptocurrency (Jun 20, 2021)
- ↑ SlowMist Hacked - SlowMist Zone (May 18, 2021)
- ↑ Unlimited Approval In Erc20 Convenience Or Security (Oct 12, 2021)
- ↑ https://blocksecteam.medium.com/all_projects/ethscope/Approval/defcon/-/blob/master/twitter.com/nomos_paradox/status/1299215849018937345 (Oct 12, 2021)
- ↑ https://git.secos.mobi:9930/all_projects/ethscope/Approval/defcon/-/blob/master/kalis.me/unlimited-erc20-allowances (Oct 12, 2021)
