{"id":6209,"date":"2026-06-01T17:11:00","date_gmt":"2026-06-01T17:11:00","guid":{"rendered":"https:\/\/global.livebitcoinnews.com\/fr\/2026\/06\/01\/un-chercheur-resout-le-bug-hongcoin-2016-et-libere-2-millions-de-dollars-en-eth-pieges\/"},"modified":"2026-06-01T17:11:00","modified_gmt":"2026-06-01T17:11:00","slug":"un-chercheur-resout-le-bug-hongcoin-2016-et-libere-2-millions-de-dollars-en-eth-pieges","status":"publish","type":"post","link":"https:\/\/global.livebitcoinnews.com\/fr\/2026\/06\/01\/un-chercheur-resout-le-bug-hongcoin-2016-et-libere-2-millions-de-dollars-en-eth-pieges\/","title":{"rendered":"Un chercheur r\u00e9sout le bug HongCoin 2016 et lib\u00e8re 2 millions de dollars en ETH pi\u00e9g\u00e9s"},"content":{"rendered":"

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

Une ICO Ethereum de 2016 appel\u00e9e HongCoin n\u2019a jamais atteint son objectif de financement. Le contrat \u00e9tait cens\u00e9 r\u00e9gler ce probl\u00e8me. Ce n\u2019est pas le cas. Lecontrat intelligent<\/a>Il y avait une fonction de remboursement cass\u00e9e, et l’argent est rest\u00e9 l\u00e0.<\/p>\n

Neuf ans et environ 2 millions de dollars plus tard, un chercheur au chapeau blanc passant par l\u00e00xFlorent_ sur X<\/a>a annonc\u00e9 ce qu\u2019il a d\u00e9crit comme le premier exploit de chapeau blanc 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 de l’ICO. Les 48 investisseurs initiaux n\u2019ont pas pu y toucher.<\/p>\n

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

HongCoin \u00e9tait un projet de collecte de fonds qui s’est d\u00e9roul\u00e9 lors de la vague d’ICO de 2016. Il n’a jamais atteint son objectif de financement. Le contrat a \u00e9t\u00e9 con\u00e7u pour rembourser automatiquement les contributeurs lorsque cela se produisait. Selon0xFlorent_ sur X<\/a>, un bug dans la fonction de remboursement a discr\u00e8tement cass\u00e9 le m\u00e9canisme. L\u2019ETH \u00e9tait assis l\u00e0. Personne ne l’a boug\u00e9.<\/p>\n

Ce n\u2019\u00e9tait pas un vol. Ce n’\u00e9tait pas un tapis. 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 leurs fonds et l’\u00e9quipe de HongCoin n’avait aucun moyen \u00e9vident de les repousser.<\/p>\n

L’adresse du contrat,0x9fa8fa61a10ff892e4ebceb7f4e0fc684c2ce0a9<\/a>, avait gard\u00e9 cet ETH bien en vue sur la cha\u00eene tout le temps. N\u2019importe qui pouvait voir l\u2019\u00e9quilibre. Personne n’avait de moyen d’entrer.<\/p>\n

41 transactions plus tard, le verrou s’est finalement bris\u00e9<\/strong><\/h2>\n

La solution \u00e9tait une fonction d’administration pr\u00e9sentant une vuln\u00e9rabilit\u00e9 de d\u00e9passement d’entier. L\u2019appeler avec une valeur d\u2019entr\u00e9e sp\u00e9cifique r\u00e9initialise le solde d\u2019un titulaire et contourne le contr\u00f4le de remboursement qui bloquait les retraits. 0xFlorent_a post\u00e9 la r\u00e9partition compl\u00e8te sur X<\/a>, affirmant avoir test\u00e9 l’approche de bout en bout avant de la partager avec l’\u00e9quipe HongCoin.<\/p>\n

L\u2019\u00e9quipe a ensuite ex\u00e9cut\u00e9 41 transactions de d\u00e9verrouillage en cha\u00eene plus t\u00f4t cette semaine. La preuve en cha\u00eene est visible surcette adresse Etherscan<\/a>. Le solde ETH dans le contrat indique 1 003,624048369852000001 ETH, \u00e9valu\u00e9 \u00e0 un peu plus de 2 091 775 $ au moment de la r\u00e9daction.<\/p>\n

\"\"<\/figure>\n

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

\u00ab\u00a0Un grand merci \u00e0 l’\u00e9quipe HongCoin pour avoir fait confiance \u00e0 l’approche et ex\u00e9cut\u00e9 la r\u00e9cup\u00e9ration en cha\u00eene\u00a0\u00bb, a d\u00e9clar\u00e9 0xFlorent_ sur X. L’\u00e9quipe, pour sa part, n’a pas pos\u00e9 trop de questions sur la m\u00e9thode.<\/p>\n

Ce qui s’est mal pass\u00e9 avec le contrat HongCoin en 2016<\/strong><\/h2>\n

Les bugs de d\u00e9passement d\u2019entier \u00e9taient un probl\u00e8me courant dans les premiers contrats Ethereum. Avant que Solidity n’ajoute des contr\u00f4les de d\u00e9bordement int\u00e9gr\u00e9s, les d\u00e9veloppeurs devaient les ajouter manuellement. Beaucoup ne l\u2019ont pas fait. Une fonction d’administration qui n’\u00e9tait pas destin\u00e9e \u00e0 servir de point de sortie contenait l’une de ces faiblesses dans le contrat HongCoin. C\u2019est devenu la seule sortie.<\/p>\n

Le tableau d\u2019ensemble raconte une histoire diff\u00e9rente de la plupart des exploits cryptographiques. Ce n\u2019\u00e9tait pas une fuite. 0xFlorent_ a trouv\u00e9 la faille, n’a pas pris l’argent et a c\u00e9d\u00e9 le chemin \u00e0 l’\u00e9quipe. Les enqu\u00eateurs r\u00e9cup\u00e8rent rarement des fonds dormants en cha\u00eene comme celui-ci. Leactivit\u00e9 du portefeuille ETH vieille de dix ans<\/a>qui fait surface en 2026 entra\u00eene g\u00e9n\u00e9ralement des r\u00e9sultats beaucoup moins coop\u00e9ratifs.<\/p>\n

Les 48 investisseurs peuvent d\u00e9sormais r\u00e9clamer leur ETH. Combien de personnes auront encore acc\u00e8s aux adresses de portefeuille d\u2019origine d\u2019il y a neuf ans est une tout autre affaire. Les donn\u00e9es en cha\u00eene confirment que les fonds sont d\u00e9bloqu\u00e9s.<\/p>\n

<\/p>\n

Source : Live Bitcoin News<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Un chercheur au chapeau blanc a d\u00e9bloqu\u00e9 plus de 2 millions de dollars d’ETH pi\u00e9g\u00e9s dans un contrat intelligent HongCoin ICO de 2016, restituant des fonds \u00e0 48 investisseurs apr\u00e8s neuf ans. Une ICO Ethereum de 2016 appel\u00e9e HongCoin n\u2019a jamais atteint son objectif de financement. Le contrat \u00e9tait cens\u00e9 r\u00e9gler ce probl\u00e8me. Ce n\u2019est […]<\/p>\n","protected":false},"author":6,"featured_media":6208,"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-6209","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ethereum"],"acf":[],"yoast_head":"\nUn chercheur r\u00e9sout le bug HongCoin 2016 et lib\u00e8re 2 millions de dollars en 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-hongcoin-2016-et-libere-2-millions-de-dollars-en-eth-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 HongCoin 2016 et lib\u00e8re 2 millions de dollars en ETH pi\u00e9g\u00e9s - France Live Bitcoin News\" \/>\n<meta property=\"og:description\" content=\"Un chercheur au chapeau blanc a d\u00e9bloqu\u00e9 plus de 2 millions de dollars d’ETH pi\u00e9g\u00e9s dans un contrat intelligent HongCoin ICO de 2016, restituant des fonds \u00e0 48 investisseurs apr\u00e8s neuf ans. 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