Reverse engineering Bambu Connect - Revision history

Sojourna: Undo revision 53763 by 5.241.140.174 (talk) Moving this to the talk page.

2026-05-17T04:13:21Z

Undo revision 53763 by 5.241.140.174 (talk) Moving this to the talk page.

← Older revision		Revision as of 04:13, 17 May 2026
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	Note that network traffic is encrypted by TLS regardless of this, ensuring that no middleman can decrypt it.		Note that network traffic is encrypted by TLS regardless of this, ensuring that no middleman can decrypt it.


	~~Offtopic:~~

	Sorry for lame post, but have no idea where to post this information. Long story, short: I am following one russian youtuber, who migrated from russia to Serbia for... obvious and known reasons... So, he is working on something interesting for "BambuLab proprietary network plugin". Maybe this is interesting and useful. Here is link: https://github.com/ClusterM/open-bambu-networking

	==References==		==References==

5.241.140.174: Add link to github and open source alternative to "Babulab proprietary network plugin".

2026-05-16T05:22:46Z

Add link to github and open source alternative to "Babulab proprietary network plugin".

← Older revision		Revision as of 05:22, 16 May 2026
Line 111:		Line 111:

	Note that network traffic is encrypted by TLS regardless of this, ensuring that no middleman can decrypt it.		Note that network traffic is encrypted by TLS regardless of this, ensuring that no middleman can decrypt it.


			Offtopic:

			Sorry for lame post, but have no idea where to post this information. Long story, short: I am following one russian youtuber, who migrated from russia to Serbia for... obvious and known reasons... So, he is working on something interesting for "BambuLab proprietary network plugin". Maybe this is interesting and useful. Here is link: https://github.com/ClusterM/open-bambu-networking

	==References==		==References==

Rudxain: relink Electron

2026-04-18T23:14:14Z

relink Electron

← Older revision		Revision as of 23:14, 18 April 2026
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	<noinclude>		<noinclude>
	{{GuideNotice}}		{{GuideNotice}}
	Bambu Connect is an [[Electron]] app with [[security through obscurity]], which makes it inherently insecure. The purpose of this guide is to demonstrate the trivial process of extracting the "private keys" used for communicating with [[Bambu Lab\|Bambu]] devices to examine, and challenge, the technical basis for Bambu Lab's security justification of Bambu Connect.		Bambu Connect is an [[wikipedia:Electron_(software_framework)\|Electron]] app with [[security through obscurity]], which makes it inherently insecure. The purpose of this guide is to demonstrate the trivial process of extracting the "private keys" used for communicating with [[Bambu Lab\|Bambu]] devices to examine, and challenge, the technical basis for Bambu Lab's security justification of Bambu Connect.

	'''Update (March 11, 2025)''': Bambu Connect v1.2.1-beta.5<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/updates/versions/1.2.1-beta.5/bambu-connect-v1.2.1-beta.5-win32-x64.exe - public-cdn.bblmw.com - accessed 2025-03-18 ([http://web.archive.org/web/20250708192738/https://public-cdn.bblmw.com/upgrade/bambu-connect/updates/versions/1.2.1-beta.5/bambu-connect-v1.2.1-beta.5-win32-x64.exe Archived])</ref> obfuscated main.js with electron-vite's v8 bytecode plugin<ref>{{Cite web \|title=electron-vite Source Code Protection \|url=https://electron-vite.org/guide/source-code-protection#what-is-v8-bytecode \|access-date=2025-03-18 \|archive-url=http://web.archive.org/web/20250708192736/https://electron-vite.org/guide/source-code-protection \|archive-date=8 Jul 2025}}</ref>. The key can likely be obtained by dumping the process memory.		'''Update (March 11, 2025)''': Bambu Connect v1.2.1-beta.5<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/updates/versions/1.2.1-beta.5/bambu-connect-v1.2.1-beta.5-win32-x64.exe - public-cdn.bblmw.com - accessed 2025-03-18 ([http://web.archive.org/web/20250708192738/https://public-cdn.bblmw.com/upgrade/bambu-connect/updates/versions/1.2.1-beta.5/bambu-connect-v1.2.1-beta.5-win32-x64.exe Archived])</ref> obfuscated main.js with electron-vite's v8 bytecode plugin<ref>{{Cite web \|title=electron-vite Source Code Protection \|url=https://electron-vite.org/guide/source-code-protection#what-is-v8-bytecode \|access-date=2025-03-18 \|archive-url=http://web.archive.org/web/20250708192736/https://electron-vite.org/guide/source-code-protection \|archive-date=8 Jul 2025}}</ref>. The key can likely be obtained by dumping the process memory.

Tempo123: /* References */ AT -> IA

2026-04-15T17:36:14Z

References: AT -> IA

← Older revision		Revision as of 17:36, 15 April 2026
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	#Extract <code>bambu-connect-beta-darwin-arm64-v1.0.4_4bb9cf0.dmg</code>''.''<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/bambu-connect-beta-darwin-arm64-v1.0.4_4bb9cf0.dmg - public-cdn.bblmw.com - accessed 2025-01-28 ([http://web.archive.org/web/20250708192750/https://public-cdn.bblmw.com/upgrade/bambu-connect/bambu-connect-beta-darwin-arm64-v1.0.4_4bb9cf0.dmg Archived])</ref> In there you can find the files of the underlying Electron app in the <code>Bambu Connect (Beta).app/Contents/Resources</code> folder.		#Extract <code>bambu-connect-beta-darwin-arm64-v1.0.4_4bb9cf0.dmg</code>''.''<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/bambu-connect-beta-darwin-arm64-v1.0.4_4bb9cf0.dmg - public-cdn.bblmw.com - accessed 2025-01-28 ([http://web.archive.org/web/20250708192750/https://public-cdn.bblmw.com/upgrade/bambu-connect/bambu-connect-beta-darwin-arm64-v1.0.4_4bb9cf0.dmg Archived])</ref> In there you can find the files of the underlying Electron app in the <code>Bambu Connect (Beta).app/Contents/Resources</code> folder.
	#The app uses asarmor to prevent easy reading. The key is stored in the mach-o binary located here: <code>/Bambu Connect (Beta).app/Contents/Resources/app.asar.unpacked/.vite/build/main.node</code> and can be extracted. Unpacking <code>app.asar</code> without fixing it first will result in an encrypted <code>main.js</code> file and 100 GB of decoy files generated. Don't try it.		#The app uses asarmor to prevent easy reading. The key is stored in the mach-o binary located here: <code>/Bambu Connect (Beta).app/Contents/Resources/app.asar.unpacked/.vite/build/main.node</code> and can be extracted. Unpacking <code>app.asar</code> without fixing it first will result in an encrypted <code>main.js</code> file and 100 GB of decoy files generated. Don't try it.
	#Load <code>main.node</code> in Ghidra and Auto-Analyze it. Then search for the GetKey function, or press G and go to <code>0000b67e</code><ref>[https://~~archive~~.is/~~RnFTu~~ "Bambu Firmware to impact use of OrchaSlicer"] - archive.~~is - archived 2025-01-21~~</ref>		#Load <code>main.node</code> in Ghidra and Auto-Analyze it. Then search for the GetKey function, or press G and go to <code>0000b67e</code><ref>[https://old.reddit.com/r/OrcaSlicer/comments/1i2t6l8/bambu_firmware_to_impact_use_of_orcaslicer/m7tuf2i/ "Bambu Firmware to impact use of OrchaSlicer"] - [https://web.archive.org/web/20250119182658/https://old.reddit.com/r/OrcaSlicer/comments/1i2t6l8/bambu_firmware_to_impact_use_of_orcaslicer/m7tuf2i/ Archived]</ref>
	#Write down the hex key. You will need to follow the previous steps to get the current key if the provided one does not work. As of 19 January 2025, they are:		#Write down the hex key. You will need to follow the previous steps to get the current key if the provided one does not work. As of 19 January 2025, they are:
	##macOS: <code>B0AE6995063C191D2B404637FBC193AE10DAB86A6BC1B1DE67B5AEE6E03018A2</code>		##macOS: <code>B0AE6995063C191D2B404637FBC193AE10DAB86A6BC1B1DE67B5AEE6E03018A2</code>

Rudxain: wanted: JS

2026-02-23T18:32:53Z

wanted: JS

← Older revision		Revision as of 18:32, 23 February 2026
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	#Install the npm package <code>asarfix</code> and use it to fix the archive: <code>npx asarfix app.asar -k <KEY> -o fixed.asar</code>		#Install the npm package <code>asarfix</code> and use it to fix the archive: <code>npx asarfix app.asar -k <KEY> -o fixed.asar</code>
	#Now you can extract it in cleartext with <code>npx asar extract fixed.asar src</code>		#Now you can extract it in cleartext with <code>npx asar extract fixed.asar src</code>
	#<code>./src/.vite/build/main.js</code> is minified. Use any JavaScript beautifier (for example <code>prettier</code>) to make it better readable. Interesting user code (including the private key) is at the end of the file.		#<code>./src/.vite/build/main.js</code> is minified. Use any [[JavaScript]] beautifier (for example <code>prettier</code>) to make it better readable. Interesting user code (including the private key) is at the end of the file.

	===Extracting certs and private key===		===Extracting certs and private key===

Bananabot: Added archive URLs for 4 citation(s) using CRWCitationBot

2026-02-23T07:25:54Z

Added archive URLs for 4 citation(s) using CRWCitationBot

← Older revision		Revision as of 07:25, 23 February 2026
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	Bambu Connect is an [[Electron]] app with [[security through obscurity]], which makes it inherently insecure. The purpose of this guide is to demonstrate the trivial process of extracting the "private keys" used for communicating with [[Bambu Lab\|Bambu]] devices to examine, and challenge, the technical basis for Bambu Lab's security justification of Bambu Connect.		Bambu Connect is an [[Electron]] app with [[security through obscurity]], which makes it inherently insecure. The purpose of this guide is to demonstrate the trivial process of extracting the "private keys" used for communicating with [[Bambu Lab\|Bambu]] devices to examine, and challenge, the technical basis for Bambu Lab's security justification of Bambu Connect.

	'''Update (March 11, 2025)''': Bambu Connect v1.2.1-beta.5<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/updates/versions/1.2.1-beta.5/bambu-connect-v1.2.1-beta.5-win32-x64.exe - public-cdn.bblmw.com - accessed 2025-03-18</ref> obfuscated main.js with electron-vite's v8 bytecode plugin<ref>{{Cite web \|title=electron-vite Source Code Protection \|url=https://electron-vite.org/guide/source-code-protection#what-is-v8-bytecode \|access-date=2025-03-18}}</ref>. The key can likely be obtained by dumping the process memory.		'''Update (March 11, 2025)''': Bambu Connect v1.2.1-beta.5<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/updates/versions/1.2.1-beta.5/bambu-connect-v1.2.1-beta.5-win32-x64.exe - public-cdn.bblmw.com - accessed 2025-03-18 ([http://web.archive.org/web/20250708192738/https://public-cdn.bblmw.com/upgrade/bambu-connect/updates/versions/1.2.1-beta.5/bambu-connect-v1.2.1-beta.5-win32-x64.exe Archived])</ref> obfuscated main.js with electron-vite's v8 bytecode plugin<ref>{{Cite web \|title=electron-vite Source Code Protection \|url=https://electron-vite.org/guide/source-code-protection#what-is-v8-bytecode \|access-date=2025-03-18 \|archive-url=http://web.archive.org/web/20250708192736/https://electron-vite.org/guide/source-code-protection \|archive-date=8 Jul 2025}}</ref>. The key can likely be obtained by dumping the process memory.

	'''Update (January 26, 2025)''': Bambu Connect v1.1.3<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/v1.1.3/bambu-connect-beta-darwin-arm64-v1.1.3_2c73d82.dmg - public-cdn.bblmw.com - accessed 2025-01-29</ref> is no longer obfuscated and can be directly extracted: <code>npx asar extract app.asar src</code>.		'''Update (January 26, 2025)''': Bambu Connect v1.1.3<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/v1.1.3/bambu-connect-beta-darwin-arm64-v1.1.3_2c73d82.dmg - public-cdn.bblmw.com - accessed 2025-01-29 ([http://web.archive.org/web/20250708192737/https://public-cdn.bblmw.com/upgrade/bambu-connect/v1.1.3/bambu-connect-beta-darwin-arm64-v1.1.3_2c73d82.dmg Archived])</ref> is no longer obfuscated and can be directly extracted: <code>npx asar extract app.asar src</code>.

	To read <code>main.js</code> for further analysis or extracting the private key stored by Bambu in the app:		To read <code>main.js</code> for further analysis or extracting the private key stored by Bambu in the app:

	#Use the MacOS .dmg file, not the .exe (finding the needed decryption code is easier in the .dmg).		#Use the MacOS .dmg file, not the .exe (finding the needed decryption code is easier in the .dmg).
	#Extract <code>bambu-connect-beta-darwin-arm64-v1.0.4_4bb9cf0.dmg</code>''.''<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/bambu-connect-beta-darwin-arm64-v1.0.4_4bb9cf0.dmg - public-cdn.bblmw.com - accessed 2025-01-28</ref> In there you can find the files of the underlying Electron app in the <code>Bambu Connect (Beta).app/Contents/Resources</code> folder.		#Extract <code>bambu-connect-beta-darwin-arm64-v1.0.4_4bb9cf0.dmg</code>''.''<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/bambu-connect-beta-darwin-arm64-v1.0.4_4bb9cf0.dmg - public-cdn.bblmw.com - accessed 2025-01-28 ([http://web.archive.org/web/20250708192750/https://public-cdn.bblmw.com/upgrade/bambu-connect/bambu-connect-beta-darwin-arm64-v1.0.4_4bb9cf0.dmg Archived])</ref> In there you can find the files of the underlying Electron app in the <code>Bambu Connect (Beta).app/Contents/Resources</code> folder.
	#The app uses asarmor to prevent easy reading. The key is stored in the mach-o binary located here: <code>/Bambu Connect (Beta).app/Contents/Resources/app.asar.unpacked/.vite/build/main.node</code> and can be extracted. Unpacking <code>app.asar</code> without fixing it first will result in an encrypted <code>main.js</code> file and 100 GB of decoy files generated. Don't try it.		#The app uses asarmor to prevent easy reading. The key is stored in the mach-o binary located here: <code>/Bambu Connect (Beta).app/Contents/Resources/app.asar.unpacked/.vite/build/main.node</code> and can be extracted. Unpacking <code>app.asar</code> without fixing it first will result in an encrypted <code>main.js</code> file and 100 GB of decoy files generated. Don't try it.
	#Load <code>main.node</code> in Ghidra and Auto-Analyze it. Then search for the GetKey function, or press G and go to <code>0000b67e</code><ref>[https://archive.is/RnFTu "Bambu Firmware to impact use of OrchaSlicer"] - archive.is - archived 2025-01-21</ref>		#Load <code>main.node</code> in Ghidra and Auto-Analyze it. Then search for the GetKey function, or press G and go to <code>0000b67e</code><ref>[https://archive.is/RnFTu "Bambu Firmware to impact use of OrchaSlicer"] - archive.is - archived 2025-01-21</ref>

AnotherConsumerRightsPerson at 14:59, 30 August 2025

2025-08-30T14:59:56Z

← Older revision		Revision as of 14:59, 30 August 2025
Line 2:		Line 2:
	<noinclude>		<noinclude>
	{{GuideNotice}}		{{GuideNotice}}
	Bambu Connect is an [[~~Help:Electron\|~~Electron]] app with [[security through obscurity]], which makes it inherently insecure. The purpose of this guide is to demonstrate the trivial process of extracting the "private keys" used for communicating with [[Bambu Lab\|Bambu]] devices to examine, and challenge, the technical basis for Bambu Lab's security justification of Bambu Connect.		Bambu Connect is an [[Electron]] app with [[security through obscurity]], which makes it inherently insecure. The purpose of this guide is to demonstrate the trivial process of extracting the "private keys" used for communicating with [[Bambu Lab\|Bambu]] devices to examine, and challenge, the technical basis for Bambu Lab's security justification of Bambu Connect.

	'''Update (March 11, 2025)''': Bambu Connect v1.2.1-beta.5<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/updates/versions/1.2.1-beta.5/bambu-connect-v1.2.1-beta.5-win32-x64.exe - public-cdn.bblmw.com - accessed 2025-03-18</ref> obfuscated main.js with electron-vite's v8 bytecode plugin<ref>{{Cite web \|title=electron-vite Source Code Protection \|url=https://electron-vite.org/guide/source-code-protection#what-is-v8-bytecode \|access-date=2025-03-18}}</ref>. The key can likely be obtained by dumping the process memory.		'''Update (March 11, 2025)''': Bambu Connect v1.2.1-beta.5<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/updates/versions/1.2.1-beta.5/bambu-connect-v1.2.1-beta.5-win32-x64.exe - public-cdn.bblmw.com - accessed 2025-03-18</ref> obfuscated main.js with electron-vite's v8 bytecode plugin<ref>{{Cite web \|title=electron-vite Source Code Protection \|url=https://electron-vite.org/guide/source-code-protection#what-is-v8-bytecode \|access-date=2025-03-18}}</ref>. The key can likely be obtained by dumping the process memory.

AnotherConsumerRightsPerson at 11:08, 30 August 2025

2025-08-30T11:08:12Z

← Older revision		Revision as of 11:08, 30 August 2025
Line 1:		Line 1:
	<noinclude><div style="padding-left:1.6rem;margin-bottom:0.5rem;">''This is part of the [[Bambu Lab Authorization Control System]] article.''</div></noinclude>		<noinclude><div style="padding-left:1.6rem;margin-bottom:0.5rem;">''This is part of the [[Bambu Lab Authorization Control System]] article.''</div></noinclude>
	~~Bambu Connect is an [[Help:Electron\|Electron]] app with [[security through obscurity]], which makes it inherently insecure.~~<noinclude>		<noinclude>
	{{GuideNotice}}		{{GuideNotice}}
	The purpose of this guide is to demonstrate the trivial process of extracting the "private keys" used for communicating with [[Bambu Lab\|Bambu]] devices to examine, and challenge, the technical basis for Bambu Lab's security justification of Bambu Connect.		Bambu Connect is an [[Help:Electron\|Electron]] app with [[security through obscurity]], which makes it inherently insecure. The purpose of this guide is to demonstrate the trivial process of extracting the "private keys" used for communicating with [[Bambu Lab\|Bambu]] devices to examine, and challenge, the technical basis for Bambu Lab's security justification of Bambu Connect.

	'''Update (March 11, 2025)''': Bambu Connect v1.2.1-beta.5<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/updates/versions/1.2.1-beta.5/bambu-connect-v1.2.1-beta.5-win32-x64.exe - public-cdn.bblmw.com - accessed 2025-03-18</ref> obfuscated main.js with electron-vite's v8 bytecode plugin<ref>{{Cite web \|title=electron-vite Source Code Protection \|url=https://electron-vite.org/guide/source-code-protection#what-is-v8-bytecode \|access-date=2025-03-18}}</ref>. The key can likely be obtained by dumping the process memory.		'''Update (March 11, 2025)''': Bambu Connect v1.2.1-beta.5<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/updates/versions/1.2.1-beta.5/bambu-connect-v1.2.1-beta.5-win32-x64.exe - public-cdn.bblmw.com - accessed 2025-03-18</ref> obfuscated main.js with electron-vite's v8 bytecode plugin<ref>{{Cite web \|title=electron-vite Source Code Protection \|url=https://electron-vite.org/guide/source-code-protection#what-is-v8-bytecode \|access-date=2025-03-18}}</ref>. The key can likely be obtained by dumping the process memory.

Abc: New obfuscation in bambu-connect-v1.2.1-beta.5

2025-03-18T00:04:38Z

New obfuscation in bambu-connect-v1.2.1-beta.5

← Older revision		Revision as of 00:04, 18 March 2025
Line 4:		Line 4:
	The purpose of this guide is to demonstrate the trivial process of extracting the "private keys" used for communicating with [[Bambu Lab\|Bambu]] devices to examine, and challenge, the technical basis for Bambu Lab's security justification of Bambu Connect.		The purpose of this guide is to demonstrate the trivial process of extracting the "private keys" used for communicating with [[Bambu Lab\|Bambu]] devices to examine, and challenge, the technical basis for Bambu Lab's security justification of Bambu Connect.

	'''Update (January 26, 2025)''': Bambu Connect v1.1.3<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/v1.1.3/bambu-connect-beta-darwin-arm64-v1.1.3_2c73d82.dmg - public-cdn.bblmw.com - accessed 2025-01-29</ref> is no longer obfuscated~~. You~~ can ~~skip all steps related to asarmor,~~ <code>~~asarfix~~</code>~~, Ghidra, and string deobfuscation~~.		'''Update (March 11, 2025)''': Bambu Connect v1.2.1-beta.5<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/updates/versions/1.2.1-beta.5/bambu-connect-v1.2.1-beta.5-win32-x64.exe - public-cdn.bblmw.com - accessed 2025-03-18</ref> obfuscated main.js with electron-vite's v8 bytecode plugin<ref>{{Cite web \|title=electron-vite Source Code Protection \|url=https://electron-vite.org/guide/source-code-protection#what-is-v8-bytecode \|access-date=2025-03-18}}</ref>. The key can likely be obtained by dumping the process memory.

			'''Update (January 26, 2025)''': Bambu Connect v1.1.3<ref>https://public-cdn.bblmw.com/upgrade/bambu-connect/v1.1.3/bambu-connect-beta-darwin-arm64-v1.1.3_2c73d82.dmg - public-cdn.bblmw.com - accessed 2025-01-29</ref> is no longer obfuscated and can be directly extracted: <code>npx asar extract app.asar src</code>.

	To read <code>main.js</code> for further analysis or extracting the private key stored by Bambu in the app:		To read <code>main.js</code> for further analysis or extracting the private key stored by Bambu in the app:

Abc: rephrase expiry

2025-02-13T17:08:35Z

rephrase expiry

← Older revision		Revision as of 17:08, 13 February 2025
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	What the key '''cannot''' be used for, contrary to many false claims on the internet:		What the key '''cannot''' be used for, contrary to many false claims on the internet:

	* Decrypting HTTPS traffic to the cloud		*Decrypting HTTPS traffic to the cloud
	* Decrypting any MQTTS or FTPS or video feed traffic		*Decrypting any MQTTS or FTPS or video feed traffic
	* Bypassing cloud user authentication		*Bypassing cloud user authentication
	* Bypassing local authentication (LAN access code)		*Bypassing local authentication (LAN access code)
	* Getting access to other printers		*Getting access to other printers
	* Signing custom firmware		*Signing custom firmware
	* Signing custom filament NFC tags		*Signing custom filament NFC tags
	* Jailbreaking		*Jailbreaking

	===Purpose of the certificates===		===Purpose of the certificates===
	The private key corresponds to the public key contained in the app's certificate. This certificate is sent to the printer, allowing it to verify the authenticity of the digital signature using the public key.		The private key corresponds to the public key contained in the app's certificate. This certificate is sent to the printer, allowing it to verify the authenticity of the digital signature using the public key.

	Bambu Connect continues to work after these certificates expire. Because of how these certificates are used, it is also unlikely that ~~it<sup>[''what?'']</sup>~~ causes the printer to get "bricked", but this needs to be proven through experiments or firmware analysis.		Bambu Connect continues to work after these certificates expire. Because of how these certificates are used, it is also unlikely that expiry causes the printer to get "bricked", but this needs to be proven through experiments or firmware analysis.

	===Additional security measures===		===Additional security measures===