Monya - Monacoin & Altcoins Walletlatest release: 3.10.5 ( 14th December 2021 ) last analysed 11th November 2021 Not reproducible from source provided
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The Analysis ¶
Crypto currency wallet that supports Monacoin, Bitcoin, Counterparty and many other currencies, and that satisfies both beginners and advanced users.
- This makes difficult crypto aspects easy.
- You don’t need email address or another private information.
- Bitcoin-based coins such as Bitcoin, Dash, Litecoin supported
- Counterparty, Monaparty, Monacard are supported.
- Not only XEM but also NEM Mosaic available
- Ethereum , ERC 20 Tokens are also supported.
- You can also send and receive XRP.
- You can even add a new currency.
- Private key is stored in only your device. So it is much higher than online wallet.
- Easy backup methods
- BIP44 HD wallet
- Complete open source
Their site is a Github hosted website.
We tried the app. Some portions of it were in Japanese, although you can choose to receive your mnemonics in English. After the user is provided with a passphrase, the app asks you to set a password. You can add several other cryptocurrencies including Bitcoin. It is possible to send and receive Bitcoin.
This app is self-custodial. However, upon attempting to verify this code, we got the following:
Building version 3.10.4 and comparing it to version from google-play, result in below diff:
diff --recursive --brief ./monya_local_build_3.10.4_2/ ./monya-from-google-play
Files ./monya_local_build_3.10.4_2/AndroidManifest.xml and ./monya-from-google-play/AndroidManifest.xml differ Files ./monya_local_build_3.10.4_2/assets/www/dist/0.dist.js and ./monya-from-google-play/assets/www/dist/0.dist.js differ Files ./monya_local_build_3.10.4_2/assets/www/dist/dist.js and ./monya-from-google-play/assets/www/dist/dist.js differ Only in ./monya-from-google-play/META-INF: GOOGPLAY.RSA Only in ./monya-from-google-play/META-INF: GOOGPLAY.SF Files ./monya_local_build_3.10.4_2/META-INF/MANIFEST.MF and ./monya-from-google-play/META-INF/MANIFEST.MF differ Files ./monya_local_build_3.10.4_2/resources.arsc and ./monya-from-google-play/resources.arsc differ
This app is unreproducible.
We could not verify that the provided code matches the binary!
As part of our Methodology, we ask:Is the published binary matching the published source code? If not, we tag it Unreproducible!
Published code doesn’t help much if it is not what the published binary was built from. That is why we try to reproduce the binary. We
- obtain the binary from the provider
- compile the published source code using the published build instructions into a binary
- compare the two binaries
- we might spend some time working around issues that are easy to work around
If this fails, we might search if other revisions match or if we can deduct the source of the mismatch but generally consider it on the provider to provide the correct source code and build instructions to reproduce the build, so we usually open a ticket in their code repository.
In any case, the result is a discrepancy between the binary we can create and the binary we can find for download and any discrepancy might leak your backup to the server on purpose or by accident.
As we cannot verify that the source provided is the source the binary was compiled from, this category is only slightly better than closed source but for now we have hope projects come around and fix verifiability issues.
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