{"id":1172,"date":"2014-02-05T11:27:58","date_gmt":"2014-02-05T11:27:58","guid":{"rendered":"http:\/\/www.phillips321.co.uk\/?p=1172"},"modified":"2014-02-05T11:31:16","modified_gmt":"2014-02-05T11:31:16","slug":"base64-decoding-in-various-languages","status":"publish","type":"post","link":"https:\/\/www.phillips321.co.uk\/2014\/02\/05\/base64-decoding-in-various-languages\/","title":{"rendered":"base64 decoding in various languages"},"content":{"rendered":"

So we have found the base64 string “SGVsbG9Xb3JsZCE=” on a locked down workstation and we want to decode. Quite often we don’t have access to tools so here’s a list of ways to decode the string using various languages.<\/p>\n

Python<\/p>\n

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>>><\/span> import<\/span> base64<\/span>
\n>>><\/span> base64<\/span>.b64decode<\/span>(<\/span>"SGVsbG9Xb3JsZCE="<\/span>)<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

PowerShell<\/p>\n

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PS<\/span> ><\/span> [<\/span>System.Text.Encoding]<\/span>::UTF8.GetString(<\/span>[<\/span>System.Convert]<\/span>::FromBase64String(<\/span>"SGVsbG9Xb3JsZCE="<\/span>)<\/span>)<\/span>
\nblahblah<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

Perl<\/p>\n

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use<\/span> MIME::<\/span>Base64<\/span>;<\/span>
\nprint<\/span><\/a> decode_base64(<\/span>"SGVsbG9Xb3JsZCE="<\/span>)<\/span>;<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

BASH<\/p>\n

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echo<\/span> SGVsbG9Xb3JsZCE<\/span>= |<\/span> base64 --decode<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

php<\/p>\n

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echo<\/span> base64_decode<\/span><\/a>(<\/span>"SGVsbG9Xb3JsZCE="<\/span>)<\/span>;<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

C#<\/p>\n

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byte<\/span>[<\/span>]<\/span> data =<\/span> Convert.<\/span>FromBase64String<\/span>(<\/span>"SGVsbG9Xb3JsZCE="<\/span>)<\/span>;<\/span>
\nstring<\/span> decodedString =<\/span> Encoding.<\/span>UTF8<\/span>.<\/span>GetString<\/span>(<\/span>data)<\/span>;<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

VisualBasic<\/p>\n

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Dim<\/span> base64Encoded As<\/span> String<\/span> = "SGVsbG9Xb3JsZCE="<\/span>
\nDim<\/span> base64Decoded as<\/span> String<\/span>
\nDim<\/span> data() As<\/span> Byte<\/span>
\ndata = System.Convert.FromBase64String(base64Encoded)
\nbase64Decoded = System.Text.ASCIIEncoding.ASCII.GetString(data)
\nmsgbox(base64Decoded)<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

Java<\/p>\n

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import<\/span> java.util.Base64<\/span>;<\/span>
\nbyte<\/span>[<\/span>]<\/span> decoded =<\/span> Base64.getDecoder<\/span>(<\/span>)<\/span>.decode<\/span>(<\/span>"SGVsbG9Xb3JsZCE="<\/span>)<\/span>;<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

JavaScript<\/p>\n

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atob(<\/span>"SGVsbG9Xb3JsZCE="<\/span>)<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

Ruby<\/p>\n

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require<\/span> "base64"<\/span>
\ndecoded_string = Base64<\/span>.decode64<\/span>(<\/span>'SGVsbG9Xb3JsZCE='<\/span>)<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

MySQL<\/p>\n

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SELECT<\/span><\/a> FROM_BASE64(<\/span>'SGVsbG9Xb3JsZCE='<\/span>)<\/span>;<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n","protected":false},"excerpt":{"rendered":"

So we have found the base64 string “SGVsbG9Xb3JsZCE=” on a locked down workstation and we want to decode. Quite often we don’t have access to tools so here’s a list of ways to decode the string using various languages. Python 12>>> import base64 >>> base64.b64decode("SGVsbG9Xb3JsZCE=") PowerShell 12PS > [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String("SGVsbG9Xb3JsZCE=")) blahblah Perl 12use MIME::Base64; print decode_base64("SGVsbG9Xb3JsZCE="); […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[414,221,416,345,418,413,420,150,165,250,417,415,111,364,166,419],"_links":{"self":[{"href":"https:\/\/www.phillips321.co.uk\/wp-json\/wp\/v2\/posts\/1172"}],"collection":[{"href":"https:\/\/www.phillips321.co.uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.phillips321.co.uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.phillips321.co.uk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.phillips321.co.uk\/wp-json\/wp\/v2\/comments?post=1172"}],"version-history":[{"count":3,"href":"https:\/\/www.phillips321.co.uk\/wp-json\/wp\/v2\/posts\/1172\/revisions"}],"predecessor-version":[{"id":1175,"href":"https:\/\/www.phillips321.co.uk\/wp-json\/wp\/v2\/posts\/1172\/revisions\/1175"}],"wp:attachment":[{"href":"https:\/\/www.phillips321.co.uk\/wp-json\/wp\/v2\/media?parent=1172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.phillips321.co.uk\/wp-json\/wp\/v2\/categories?post=1172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.phillips321.co.uk\/wp-json\/wp\/v2\/tags?post=1172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}