{"id":6195,"date":"2026-06-01T16:21:14","date_gmt":"2026-06-01T16:21:14","guid":{"rendered":"https:\/\/global.livebitcoinnews.com\/fr\/2026\/06\/01\/un-chercheur-resout-le-bug-de-hongcoin-de-2016-libere-2-millions-de-dollars-deth-pieges\/"},"modified":"2026-06-01T16:21:14","modified_gmt":"2026-06-01T16:21:14","slug":"un-chercheur-resout-le-bug-de-hongcoin-de-2016-libere-2-millions-de-dollars-deth-pieges","status":"publish","type":"post","link":"https:\/\/global.livebitcoinnews.com\/fr\/2026\/06\/01\/un-chercheur-resout-le-bug-de-hongcoin-de-2016-libere-2-millions-de-dollars-deth-pieges\/","title":{"rendered":"Un chercheur r\u00e9sout le bug de HongCoin de 2016, lib\u00e8re 2 millions de dollars d’ETH pi\u00e9g\u00e9s"},"content":{"rendered":"

Un chercheur white-hat a d\u00e9bloqu\u00e9 plus de 2 millions de dollars en ETH pi\u00e9g\u00e9s dans un contrat intelligent de l’ICO HongCoin de 2016, restituant les fonds \u00e0 48 investisseurs apr\u00e8s neuf ans.<\/strong><\/em><\/p>\n\n

Une ICO Ethereum de 2016 appel\u00e9e HongCoin n’a jamais atteint son objectif de financement. Le contrat \u00e9tait cens\u00e9 g\u00e9rer ce probl\u00e8me. Il ne l’a pas fait. Le contrat intelligent<\/a> avait une fonction de remboursement d\u00e9fectueuse, et l’argent est simplement rest\u00e9 l\u00e0.<\/p>\n\n\n\n

Neuf ans et environ 2 millions de dollars plus tard, un chercheur white-hat connu sous le nom de 0xFlorent_ sur X<\/a> a annonc\u00e9 ce qu’il a d\u00e9crit comme la premi\u00e8re exploitation white-hat sur Ethereum. 1 003,62 ETH, d’une valeur d’environ deux millions de dollars aux prix actuels, \u00e9taient bloqu\u00e9s dans ce contrat depuis l’\u00e8re des ICO. Les 48 investisseurs d’origine ne pouvaient pas y toucher.<\/p>\n\n\n\n

Neuf ans, un bug, 2 millions de dollars que personne ne pouvait toucher<\/strong><\/h2>\n\n\n\n

HongCoin \u00e9tait un projet de lev\u00e9e de fonds qui a eu lieu pendant la vague d’ICO de 2016. Il n’a jamais atteint son objectif de financement. Le contrat \u00e9tait con\u00e7u pour rembourser automatiquement les contributeurs lorsque cela se produisait. Selon 0xFlorent_ sur X<\/a>, un bug dans la fonction de remboursement a discr\u00e8tement cass\u00e9 le m\u00e9canisme. Les ETH sont rest\u00e9s l\u00e0. Personne ne les a d\u00e9plac\u00e9s.<\/p>\n\n\n\n

Ce n’\u00e9tait pas un vol. Ce n’\u00e9tait pas un rug pull. C’\u00e9tait une porte cass\u00e9e qui semblait ferm\u00e9e des deux c\u00f4t\u00e9s. Les investisseurs n’avaient aucun moyen de r\u00e9cup\u00e9rer les fonds, et l’\u00e9quipe de HongCoin n’avait aucun moyen \u00e9vident de les renvoyer.<\/p>\n\n\n\n

L’adresse du contrat, 0x9fa8fa61a10ff892e4ebceb7f4e0fc684c2ce0a9<\/a>, d\u00e9tenait ces ETH bien en vue sur la cha\u00eene pendant tout ce temps. Tout le monde pouvait voir le solde. Personne n’avait de moyen fonctionnel d’y entrer.<\/p>\n\n\n\n

41 transactions plus tard, le verrou a enfin c\u00e9d\u00e9<\/strong><\/h2>\n\n\n\n

La sortie \u00e9tait une fonction d’administration avec une vuln\u00e9rabilit\u00e9 de d\u00e9passement d’entier. En l’appelant avec une valeur d’entr\u00e9e sp\u00e9cifique, le solde d’un d\u00e9tenteur est r\u00e9initialis\u00e9 et la v\u00e9rification de remboursement qui bloquait les retraits est contourn\u00e9e. 0xFlorent_ a publi\u00e9 l’analyse compl\u00e8te sur X<\/a>, disant qu’il avait test\u00e9 l’approche de bout en bout avant de la partager avec l’\u00e9quipe de HongCoin.<\/p>\n\n\n\n

L’\u00e9quipe a ensuite ex\u00e9cut\u00e9 41 transactions de d\u00e9verrouillage sur la cha\u00eene plus t\u00f4t cette semaine. La preuve sur cha\u00eene est visible \u00e0 cette adresse Etherscan<\/a>. Le solde ETH dans le contrat s’\u00e9l\u00e8ve \u00e0 1 003,624048369852000001 ETH, d’une valeur d’un peu plus de 2 091 775 $ au moment de la r\u00e9daction.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Source : 0xFlorent_ sur X (capture d’\u00e9cran Etherscan)<\/a><\/p>\n\n\n\n

\u00ab\u00a0Merci beaucoup \u00e0 l’\u00e9quipe de HongCoin d’avoir fait confiance \u00e0 l’approche et d’avoir ex\u00e9cut\u00e9 la r\u00e9cup\u00e9ration sur cha\u00eene\u00a0\u00bb, a d\u00e9clar\u00e9 0xFlorent_ sur X. L’\u00e9quipe, de son c\u00f4t\u00e9, n’a pas pos\u00e9 trop de questions sur la m\u00e9thode.<\/p>\n\n\n\n

Ce que le contrat HongCoin a mal fait en 2016<\/strong><\/h2>\n\n\n\n

Les bugs de d\u00e9passement d’entier \u00e9taient un probl\u00e8me courant dans les premiers contrats Ethereum. Avant que Solidity n’ajoute des v\u00e9rifications de d\u00e9passement int\u00e9gr\u00e9es, les d\u00e9veloppeurs devaient les ajouter manuellement. Beaucoup ne l’ont pas fait. Une fonction d’administration qui n’\u00e9tait pas destin\u00e9e \u00e0 \u00eatre le point de sortie contenait l’une de ces faiblesses dans le contrat HongCoin. Elle est devenue la seule sortie.<\/p>\n\n\n\n

Le tableau g\u00e9n\u00e9ral raconte une histoire diff\u00e9rente de la plupart des exploits de crypto-monnaies. Ce n’\u00e9tait pas un drainage. 0xFlorent_ a trouv\u00e9 la faille, n’a pas pris l’argent et a remis le chemin \u00e0 l’\u00e9quipe. Les enqu\u00eateurs r\u00e9cup\u00e8rent rarement des fonds dormants sur cha\u00eene de cette mani\u00e8re. L’activit\u00e9 du portefeuille ETH vieux d’une d\u00e9cennie<\/a> qui refait surface en 2026 donne g\u00e9n\u00e9ralement des r\u00e9sultats bien moins coop\u00e9ratifs.<\/p>\n\n\n\n

Les 48 investisseurs peuvent d\u00e9sormais r\u00e9clamer leurs ETH. Combien d’entre eux auront encore acc\u00e8s aux adresses de portefeuille d’origine d’il y a neuf ans est une tout autre affaire. Les donn\u00e9es sur cha\u00eene confirment que les fonds sont d\u00e9bloqu\u00e9s.<\/p>\n","protected":false},"excerpt":{"rendered":"

Un chercheur white-hat a d\u00e9bloqu\u00e9 plus de 2 millions de dollars en ETH pi\u00e9g\u00e9s dans un contrat intelligent de l’ICO HongCoin de 2016, restituant les fonds \u00e0 48 investisseurs apr\u00e8s neuf ans. Une ICO Ethereum de 2016 appel\u00e9e HongCoin n’a jamais atteint son objectif de financement. Le contrat \u00e9tait cens\u00e9 g\u00e9rer ce probl\u00e8me. Il ne […]<\/p>\n","protected":false},"author":6,"featured_media":6194,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-6195","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ethereum"],"acf":[],"yoast_head":"\nUn chercheur r\u00e9sout le bug de HongCoin de 2016, lib\u00e8re 2 millions de dollars d'ETH pi\u00e9g\u00e9s - France Live Bitcoin News<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/global.livebitcoinnews.com\/fr\/2026\/06\/01\/un-chercheur-resout-le-bug-de-hongcoin-de-2016-libere-2-millions-de-dollars-deth-pieges\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Un chercheur r\u00e9sout le bug de HongCoin de 2016, lib\u00e8re 2 millions de dollars d'ETH pi\u00e9g\u00e9s - France Live Bitcoin News\" \/>\n<meta property=\"og:description\" content=\"Un chercheur white-hat a d\u00e9bloqu\u00e9 plus de 2 millions de dollars en ETH pi\u00e9g\u00e9s dans un contrat intelligent de l’ICO HongCoin de 2016, restituant les fonds \u00e0 48 investisseurs apr\u00e8s neuf ans. 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Une ICO Ethereum de 2016 appel\u00e9e HongCoin n’a jamais atteint son objectif de financement. Le contrat \u00e9tait cens\u00e9 g\u00e9rer ce probl\u00e8me. 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