Hello Jorge, the file content begin with: AGFzbQEAAAABZxBgAn9/AGABfwBgA39/fwF/YAJ/fwF/YAF/AX5gBX9/f39/AGAAAGADf39/AGAHf39/f39/fwBgBH9/f38Bf2AAAX9gAX8Bf2AEf39/fwBgBn9/f39
can you explain how this process of decoding and executing the wasm file can be done on the browser? Il giorno sab 6 nov 2021 alle ore 16:30 Jorge Prendes < [email protected]> ha scritto: > If that's the begining of the file, then it's not a valid wasm file. > > I any case, that seems to be base64 encoded, decoding to: > > ` ` ~` `` ` ` ` ` ` ` ` ` U ./index"__wbg_loadResults_a79a4858742b1492 > ./index __wbg_error > > This is not a valid wasm file start either, but might help you move > forward. > > Answering your question, it's entirely possible for the application to > manipulate the bytes before attempting to execute it as a wasm binary. > > Cheers, > Jorge > > On Sat, 6 Nov 2021, 14:10 Alessio Mochi, <[email protected]> wrote: > >> I was not referring to the name of the file but to its content. >> I tried to run the command on the file but it says it's invalid >> >> $ wasm2wat file.module.wasm >> 0000004: error: bad magic value >> >> >> Il giorno sab 6 nov 2021 alle ore 13:29 Floh <[email protected]> ha >> scritto: >> >>> Despite the name, WASM files are binary data. If you want to see the >>> disassembly, either look at the WASM files in browser devtools under the >>> "Sources" tab, or use the wasm2wat tool from the WABT toolkit: >>> https://github.com/WebAssembly/wabt >>> >>> >>> >>> On Thursday, 4 November 2021 at 18:22:11 UTC+1 [email protected] wrote: >>> >>>> I download from the browser an a file .wasm of an web application where >>>> inside >>>> is present a unique string like: >>>> >>>> >>>> YAJ/fwF/YAF/AX5gBX9/f39/AGAAAGADf39/AGAHf39/f39/fwBgBH9/f38Bf2AAAX9gAX8Bf2AEf39/fwBgBn9/f39/fwF/YAd/f39/f39/AX9gAAACVQIHLi9pbmRleCJfX3diZ19sb2FkUmVzdWx0c19hNzlhNDg1ODc0MmIxNDkyAAUHLi9pbmRleBxfX3diZ19lcnJvcl... >>>> >>>> that is very strange. I usually see some code in file wasm. >>>> Is it possible for the code to be decrypted and executed on the fly in >>>> the browser? >>>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "emscripten-discuss" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/emscripten-discuss/7LWjNCep_04/unsubscribe >>> . >>> To unsubscribe from this group and all its topics, send an email to >>> [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/emscripten-discuss/acaf9af8-0c26-4f91-ac11-977ac22fdd9bn%40googlegroups.com >>> <https://groups.google.com/d/msgid/emscripten-discuss/acaf9af8-0c26-4f91-ac11-977ac22fdd9bn%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "emscripten-discuss" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/emscripten-discuss/CAHUGow0KNkGuNOD4acQvx4AjSqdwb--GDYdWOO3BfuGQQovR9w%40mail.gmail.com >> <https://groups.google.com/d/msgid/emscripten-discuss/CAHUGow0KNkGuNOD4acQvx4AjSqdwb--GDYdWOO3BfuGQQovR9w%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups > "emscripten-discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/emscripten-discuss/CAEde_x_vb1SRfj1TYxGG2yUU-L4Djxs7bT4jVO5G8GFzkXHjgw%40mail.gmail.com > <https://groups.google.com/d/msgid/emscripten-discuss/CAEde_x_vb1SRfj1TYxGG2yUU-L4Djxs7bT4jVO5G8GFzkXHjgw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/emscripten-discuss/CAHUGow0dS4AYfjjwyG0G3zR1sSW%2BO86D576b7C3-ExBeSkEw3A%40mail.gmail.com.
