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SKP — Token LP-Balance Drain + sync() Reserve Manipulation (Flash-Loan Amplified)

Incident date May 27, 2026

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ClosedBNB Smart ChainSmart contract exploit / flash loanCluster: SKP-LP-2026-05

Estimated loss

$212.8K

Victims identified

more than ten victims identified
Victim group joining is coming soon.

Investigation

50%

Facts and investigation

Attacker: Exploiter 1 (trigger EOA): 0x83B9e7EDC5B3127E4853A4F4945b92aa88eEF0C8. Exploiter 2 (attack contract): 0xE924853DcDfcB89292335042AB10d68c7315D7C1.

Funds moved to: Net profit of 162,854.21 USDT + ~74.877 BNB transferred from the attack contract (Exploiter 2) back to the trigger EOA (Exploiter 1) at the end of the transaction; 1 BNB paid to BlockRazor (MEV bundle).
Exploiter 1 (EOA): 0x83B9e7EDC5B3127E4853A4F4945b92aa88eEF0C8. Exploiter 2 (attack contract): 0xE924853DcDfcB89292335042AB10d68c7315D7C1. SKP token: 0xecbdc0b76142740bb564b8aa1bcd061cb151a666. USDT (BSC): 0x55d398326f99059ff775485246999027b3197955. Target LP: PancakeSwap V2 BSC-USD/SKP. Exploit tx: 0xbc01ea37bd2ff8f6aa6afcfbe0406114ff27a01e9aa56102bfa4ad8a0c2f25ee (block 100582079). Flash-loan sources: Lista DAO Moolah (BTCB + USDT) and Venus (USDT borrow against vBTC collateral). NOTE: BscScan

Timeline: On 27 May 2026, in a single transaction (0xbc01ea37...f25ee, BSC block 100582079), an attacker drained ~$212,850 (162,854.21 USDT + ~74.877 BNB) from the SKP/USDT market on PancakeSwap V2. The SKP token logic allowed extra SKP to be transferred out of the LP after a large buy; the attacker then called sync() to write incorrect reserves, pushing SKP reserves toward zero and letting USDT be extracted. The attack was amplified with flash loans from Lista DAO Moolah (BTCB and USDT) and a Venus borrow (~88M USDT against vBTC collateral). A two-contract structure was used: a trigger EOA (0x83B9e7ED...eF0C8) drove an attack contract (0xE924853D...5D7C1), which paid 1 BNB to BlockRazor for a MEV bundle and returned the net profit to the EOA. TenArmor detected and publicised the attack the same day (~$212K). Recovery: 0%. (BscScan displays transient values in the hundreds of millions for BTCB/USDT inside the transaction; these are flash-loaned amounts in transit and not the realised loss.)

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