System Lock Pin Code For Mac
2021年7月24日Download here: http://gg.gg/vi113
A tiny but intriguing open source project entitled iCloudHackerattracted interest over the weekend.
*System Lock Pin Code Macbook Air
*How To Bypass System Lock Pin Code For Mac
*Mac Lock Computer
*System Lock Pin Code Macbook Air
The brashly-named project, which fits into just 79 lines of C code, boldly advertises that its purpose is to “bypass Apple’s theft protection.”
It’s a firmware lock, you have 2 options: 1. The seller gives you the password. The seller gives you the original receipt, so you can take it to apple, they can remove the lock. Here in the Netherlands it cost me €45. The flashing folder means that the drive is empty or that it cannot see the drive. How to unlock MAC EFI Icloud with 6 digit PIN Lock passcode. Macbook Pro - iMac 1) Add or remove a stick of ram. Obviously if you have one stick in, add one and if you have two in remove one. The system will restart with the ’bong noise’, allow it to do this 3 times. On the third ’bong’ you can let go of the keys. The machine will now boot. Guide: Unlock MacBook Air Firmware-lock and PIN-lock (A1466） by Bellin. A MacBook Air is locked by pin code and firmware, the model is A1466, the motherboard model is 820-00165-A, which is release in 2015. Press the MacBook power button, after entering the system, it shows PIN code lock, press the ’Option’ button, it shows firmware lock.
That description might be gilding refined gold (or painting the lily) just a bit.
The code doesn’t really “hack iCloud” in any general sense: it targets Apple’s Lost Mode feature, intended to help you locate a lost iOS device or Mac by using iCloud as a message broker to tell the missing computer to call home.
But, as we shall see, there are nevertheless some interesting lessons we can learn here.Apple’s Lost Mode
We’d love to present a screenshot sequence showing the Lost Mode process from “Go” to “Whoa,” using OS X in a virtual machine so that locking ourselves out would be an incidental inconvenience.
But that turned out to be tricky, because it seems that iCloud and virtual machines don’t mix: Need for speed 2015 game.
Fortunately, both the purpose and function of Lost Mode are explained fairly clearly in Apple’s support knowledgebase.
From another iDevice, Mac or web browser, you can login to iCloud with your Apple ID, click on the device you’ve misplaced, and activate Lost Mode:
If the lost device is a Mac, then if is it still turned on and has internet access, iCloud will tell it to reboot. (If it is offline, it will lock up next time it comes online; if it never comes online again, you are unavoidably out of luck.)
Before rebooting, however, your Mac will reconfigure its boot-time firmware so that instead of loading OS X directly, you’ll start at a pre-boot prompt asking for a four-digit code:
The code is a so-called “system lock PIN,” and you choose it when you activate Lost Mode.
While you’re at the Lost Mode lock screen, you can’t activate the usual boot-time options to access your Mac via other means.
So you can’t reboot from USB, or mount the disk in Target Mode from another Mac over a FireWire or Thunderbolt connector.Is a four-digit PIN enough?
Maybe.
A four-digit passcode is just about enough if you have a reliable way of locking up the protected content after a few failures.
ATMs (bank machines, cashpoints), for example, give you three goes at your PIN; then they eat your bank card, so you don’t get the chance to loop through the remaining 9997 codes until you hit pay dirt.
SIM cards in mobile phones lock up after three PIN errors, switching into PUK mode and giving you a further ten tries at an eight-digit code; then they block the SIM forever.
Lost Mode on your Mac doesn’t do that sort of lockout – it is just about feasible, if not exactly practicable, to sit there typing in every code in turn, trying to get a match.
→ You’d get there with patience, but it would be a frustrating and error-prone exercise for a human. Try typing 0000-[return]-0001-[return]-0002 and so on for a while. See how long you last before you make a mistake and type a wrong code, lose track of where you are, give up in frustration, or all of these.Replacing the human element
To frustrate a brute force attack further, the Lost Mode lock screen makes you wait 60 seconds after five failures.
And if you fail at the sixth attempt, it makes you wait for five minutes before you can have your seventh try.
Then you’re back to the start of a seven-guess cycle.
In theory, then, assuming you can reliably try one passcode per second, plus six minutes of timeout in every seven tries, you should be able to get from 0000 to 9999 in just over 140 hours.
That’s six days, assuming you don’t stop to eat or sleep and make zero mistakes. (You can sleep if you work in a relay. But the attack can’t be parallelised, because you can only enter one passcode at a time.)Get rid of the human element
What iCloudHacker does is to convert a tiny Arduino computer into an automated USB mouse and keyboard.
You then plug this electronic typist into a locked Mac, and let it tirelessly and unerringly plug away at typing typing typing 0000-[return]-0001-[return]-0002, so you don’t have to.
The coder made one significant optimisation, noticing that Apple’s pre-boot code doesn’t record that it is in the middle of a five-minute lockout.
If you take a short-cut by rebooting, you don’t end up back in a five-minute lockout; you return to the passcode prompt right away.
So iCloudHacker simply reboots the Mac after six failures, which brings it back to its seventh unlock prompt with much less than five minutes’ delay.
→ Ironically, iCloudHacker can’t reboot too soon, as it has no way of telling whether the previous guess actually worked or not. The compromise is to wait 45 seconds before trying to reboot, assuming that if the previous guess was successful, the [Reboot] button will no longer exist when the code tries to trigger it. There is a further 75 second delay to ensure that the reboot has time to complete, but the elapsed time between guesses is still well under five minutes.
With iCloudHacker, you can break in much faster than you could by hand; you don’t have to risk labouring all the way to 9999 to realise you mistyped one or more of the passcodes; and you can go to the beach while the cracking proceeds without you.
For what it’s worth, the author claims a maximum runtime of 60 hours, though my calculations put it at just under 90 hours, or close to four days:Apple should fix this!
One online article has roundly taken Apple to task over this attack, suggesting that “it comes at a very bad time…, as just over a week ago there was a disastrous vulnerability in iOS and OSX regarding SSL.”
The authors go on to suggest that Apple should make a number of changes to the Lost Mode pre-boot screen on the Mac, such as:
*increasing the minimum number of digits to six;
*requiring the use of symbols and letters; and
*introducing a persistent record of previous unsuccessful attempts.
Actually, there’s a much better way to defend your lost Mac than by waiting for, or even asking, Apple to make these changes.
That’s because a Mac protected only by the Lost Mode screen can be taken over by an attacker in far less than four days anyway.
Unless your Mac is fully encrypted, which typically means using OS X’s built-in FileVault full-disk encryption (FDE) system, someone who has access to your Mac can simply put your hard disk into another computer (or a suitable drive enclosure) and read everything off it.
For a determined attacker, removing your hard disk and imaging it to process offline later has several criminal advantages:
*He needs minutes to remove the disk, rather than hours or days to guess the PIN.
*He doesn’t need to rely on the CPU in your Mac to have a try at “mining” the data stored on it.
*He can arrange for your Mac to be returned apparently still locked.
The third point is a tricky one: if you have Lost Moded your Mac, but it wasn’t encrypted, then if you get it back apparently safe and sound….
…you simply won’t know whether someone else has your data or not, and you may be inclined to assume they don’t, because the lock will still be in place.
→ Take at look at this article for a fascinating approach to tamper detection, using glitter nail polish and some tricks from astronomy to help you spot when your “safe and sound” computer hardware isn’t.FDE – don’t leave home without it
The solution is simple.
Don’t leave home without full-disk encryption (FDE) activated.
If your disk is encrypted, then getting past the Lost Mode bootup lock screen only gets an attacker to the next stage, where he needs to enter your full OS X password to go any further.
In our opinion, many of the fears that people seem to have of FDE are misguided.
Notably:
*On a modern Mac, we don’t think you’ll be able to come up with an objective measurement that your computer is slower due to the overhead of encryption.
*We don’t think you’ll forget your password very often, in the same way that you very rarely lock your car keys in the boot (trunk).
*We don’t think you’ll find it terribly hard to write down the 24-character recovery key on piece of paper and lock it up at home, just in case.
In a corporate environment, Apple’s FileVault component can be managed, along with its Windows counterpart, Microsoft’s Bitlocker, by tools such as Sophos’s own SafeGuard.
That gives IT departments confidence that forgetful users can be safely assisted to get back into their Macs, and that employees who depart in a hurry can’t leave the company locked out from its own data.
Incidentally, recovery-type access using FileVault and products like Sophos SafeGuard does not rely on any kind of backdoor, but rather on a set of managable and auditable front doors.
That’s because FileVault allows each encrypted Mac to be setup up so it can be unlocked by one or more of:
*Users who supply their regular OS X password.
*Users entering their personal 24-character recovery key.
*Authorised IT staffers with access to the appropriate corporate recovery key.
You can even store your recovery key with Apple, if that sort of thing sits comfortably with you.
But you don’t need to trust Apple with the keys to your castle: we suggest simply writing down the recovery key on a piece of paper.
Then keep the paper under lock-and-key, old style.
How to bypass 4 digits lock code on MacBook. if you have a locked icloud iMac, MacBook, mac pro locked on passcode screen here is a solution for free.
this solution is based on Mount the locked drive on another machine or in an HD external cage, find the PIN inside icloud folder , re-install the locked drive into the original Mac, enter the PIN, all working again .
Tutorial:System Lock Pin Code Macbook AirHow to bypass 4 digits lock code on MacBook
the easy way, you will need SATA to USB adapter if you have a laptop without room for an additional drive.
first, remove the locked hard drive from your Mac. You can find detailed guides for your specific machine just google it or check youtube. install it on HD as an external machine.
Once booted into the alternate system, locate your locked drive.
In my case it was macintosh: Now browse to UsersusernameLibraryApplication SupportiCloud . In the folder “iCloud” find a file named with a bunch of numbers: ##########.lock In my case it was: 1138515150.lock, just write it down.How To Bypass System Lock Pin Code For Mac
Install the locked drive back into the original locked Mac.
its important that you put it back in the machine where it was originally locked so that the motherboard firmware will be unlocked in the next step.
Boot up the locked Mac and referencing the number you recorded, you can start trying 4 numbers at a time for the PIN. my file was 1138515150.lock
Try the first 4, then the second 4, and so on…
For example: 1138, 1385, 3851, 8515, 5151, 1515, 5150.
In my case, the PIN was the second to last 4 digits: 1515
If you typed in more than 10 combinations, then it says that you are locked out for a minute. Just restart the machine and continue entering the combinations from where you left off.
Once you enter the right PIN, the Mac will instantly reboot proceeding to where you were when the lockout occurred. It will also remove the firmware password.Mac Lock Computer
here it is new unlocked Mac!!! easy as that
More about MacBook pro:System Lock Pin Code Macbook AirRelated
Download here: http://gg.gg/vi113
https://diarynote.indered.space
A tiny but intriguing open source project entitled iCloudHackerattracted interest over the weekend.
*System Lock Pin Code Macbook Air
*How To Bypass System Lock Pin Code For Mac
*Mac Lock Computer
*System Lock Pin Code Macbook Air
The brashly-named project, which fits into just 79 lines of C code, boldly advertises that its purpose is to “bypass Apple’s theft protection.”
It’s a firmware lock, you have 2 options: 1. The seller gives you the password. The seller gives you the original receipt, so you can take it to apple, they can remove the lock. Here in the Netherlands it cost me €45. The flashing folder means that the drive is empty or that it cannot see the drive. How to unlock MAC EFI Icloud with 6 digit PIN Lock passcode. Macbook Pro - iMac 1) Add or remove a stick of ram. Obviously if you have one stick in, add one and if you have two in remove one. The system will restart with the ’bong noise’, allow it to do this 3 times. On the third ’bong’ you can let go of the keys. The machine will now boot. Guide: Unlock MacBook Air Firmware-lock and PIN-lock (A1466） by Bellin. A MacBook Air is locked by pin code and firmware, the model is A1466, the motherboard model is 820-00165-A, which is release in 2015. Press the MacBook power button, after entering the system, it shows PIN code lock, press the ’Option’ button, it shows firmware lock.
That description might be gilding refined gold (or painting the lily) just a bit.
The code doesn’t really “hack iCloud” in any general sense: it targets Apple’s Lost Mode feature, intended to help you locate a lost iOS device or Mac by using iCloud as a message broker to tell the missing computer to call home.
But, as we shall see, there are nevertheless some interesting lessons we can learn here.Apple’s Lost Mode
We’d love to present a screenshot sequence showing the Lost Mode process from “Go” to “Whoa,” using OS X in a virtual machine so that locking ourselves out would be an incidental inconvenience.
But that turned out to be tricky, because it seems that iCloud and virtual machines don’t mix: Need for speed 2015 game.
Fortunately, both the purpose and function of Lost Mode are explained fairly clearly in Apple’s support knowledgebase.
From another iDevice, Mac or web browser, you can login to iCloud with your Apple ID, click on the device you’ve misplaced, and activate Lost Mode:
If the lost device is a Mac, then if is it still turned on and has internet access, iCloud will tell it to reboot. (If it is offline, it will lock up next time it comes online; if it never comes online again, you are unavoidably out of luck.)
Before rebooting, however, your Mac will reconfigure its boot-time firmware so that instead of loading OS X directly, you’ll start at a pre-boot prompt asking for a four-digit code:
The code is a so-called “system lock PIN,” and you choose it when you activate Lost Mode.
While you’re at the Lost Mode lock screen, you can’t activate the usual boot-time options to access your Mac via other means.
So you can’t reboot from USB, or mount the disk in Target Mode from another Mac over a FireWire or Thunderbolt connector.Is a four-digit PIN enough?
Maybe.
A four-digit passcode is just about enough if you have a reliable way of locking up the protected content after a few failures.
ATMs (bank machines, cashpoints), for example, give you three goes at your PIN; then they eat your bank card, so you don’t get the chance to loop through the remaining 9997 codes until you hit pay dirt.
SIM cards in mobile phones lock up after three PIN errors, switching into PUK mode and giving you a further ten tries at an eight-digit code; then they block the SIM forever.
Lost Mode on your Mac doesn’t do that sort of lockout – it is just about feasible, if not exactly practicable, to sit there typing in every code in turn, trying to get a match.
→ You’d get there with patience, but it would be a frustrating and error-prone exercise for a human. Try typing 0000-[return]-0001-[return]-0002 and so on for a while. See how long you last before you make a mistake and type a wrong code, lose track of where you are, give up in frustration, or all of these.Replacing the human element
To frustrate a brute force attack further, the Lost Mode lock screen makes you wait 60 seconds after five failures.
And if you fail at the sixth attempt, it makes you wait for five minutes before you can have your seventh try.
Then you’re back to the start of a seven-guess cycle.
In theory, then, assuming you can reliably try one passcode per second, plus six minutes of timeout in every seven tries, you should be able to get from 0000 to 9999 in just over 140 hours.
That’s six days, assuming you don’t stop to eat or sleep and make zero mistakes. (You can sleep if you work in a relay. But the attack can’t be parallelised, because you can only enter one passcode at a time.)Get rid of the human element
What iCloudHacker does is to convert a tiny Arduino computer into an automated USB mouse and keyboard.
You then plug this electronic typist into a locked Mac, and let it tirelessly and unerringly plug away at typing typing typing 0000-[return]-0001-[return]-0002, so you don’t have to.
The coder made one significant optimisation, noticing that Apple’s pre-boot code doesn’t record that it is in the middle of a five-minute lockout.
If you take a short-cut by rebooting, you don’t end up back in a five-minute lockout; you return to the passcode prompt right away.
So iCloudHacker simply reboots the Mac after six failures, which brings it back to its seventh unlock prompt with much less than five minutes’ delay.
→ Ironically, iCloudHacker can’t reboot too soon, as it has no way of telling whether the previous guess actually worked or not. The compromise is to wait 45 seconds before trying to reboot, assuming that if the previous guess was successful, the [Reboot] button will no longer exist when the code tries to trigger it. There is a further 75 second delay to ensure that the reboot has time to complete, but the elapsed time between guesses is still well under five minutes.
With iCloudHacker, you can break in much faster than you could by hand; you don’t have to risk labouring all the way to 9999 to realise you mistyped one or more of the passcodes; and you can go to the beach while the cracking proceeds without you.
For what it’s worth, the author claims a maximum runtime of 60 hours, though my calculations put it at just under 90 hours, or close to four days:Apple should fix this!
One online article has roundly taken Apple to task over this attack, suggesting that “it comes at a very bad time…, as just over a week ago there was a disastrous vulnerability in iOS and OSX regarding SSL.”
The authors go on to suggest that Apple should make a number of changes to the Lost Mode pre-boot screen on the Mac, such as:
*increasing the minimum number of digits to six;
*requiring the use of symbols and letters; and
*introducing a persistent record of previous unsuccessful attempts.
Actually, there’s a much better way to defend your lost Mac than by waiting for, or even asking, Apple to make these changes.
That’s because a Mac protected only by the Lost Mode screen can be taken over by an attacker in far less than four days anyway.
Unless your Mac is fully encrypted, which typically means using OS X’s built-in FileVault full-disk encryption (FDE) system, someone who has access to your Mac can simply put your hard disk into another computer (or a suitable drive enclosure) and read everything off it.
For a determined attacker, removing your hard disk and imaging it to process offline later has several criminal advantages:
*He needs minutes to remove the disk, rather than hours or days to guess the PIN.
*He doesn’t need to rely on the CPU in your Mac to have a try at “mining” the data stored on it.
*He can arrange for your Mac to be returned apparently still locked.
The third point is a tricky one: if you have Lost Moded your Mac, but it wasn’t encrypted, then if you get it back apparently safe and sound….
…you simply won’t know whether someone else has your data or not, and you may be inclined to assume they don’t, because the lock will still be in place.
→ Take at look at this article for a fascinating approach to tamper detection, using glitter nail polish and some tricks from astronomy to help you spot when your “safe and sound” computer hardware isn’t.FDE – don’t leave home without it
The solution is simple.
Don’t leave home without full-disk encryption (FDE) activated.
If your disk is encrypted, then getting past the Lost Mode bootup lock screen only gets an attacker to the next stage, where he needs to enter your full OS X password to go any further.
In our opinion, many of the fears that people seem to have of FDE are misguided.
Notably:
*On a modern Mac, we don’t think you’ll be able to come up with an objective measurement that your computer is slower due to the overhead of encryption.
*We don’t think you’ll forget your password very often, in the same way that you very rarely lock your car keys in the boot (trunk).
*We don’t think you’ll find it terribly hard to write down the 24-character recovery key on piece of paper and lock it up at home, just in case.
In a corporate environment, Apple’s FileVault component can be managed, along with its Windows counterpart, Microsoft’s Bitlocker, by tools such as Sophos’s own SafeGuard.
That gives IT departments confidence that forgetful users can be safely assisted to get back into their Macs, and that employees who depart in a hurry can’t leave the company locked out from its own data.
Incidentally, recovery-type access using FileVault and products like Sophos SafeGuard does not rely on any kind of backdoor, but rather on a set of managable and auditable front doors.
That’s because FileVault allows each encrypted Mac to be setup up so it can be unlocked by one or more of:
*Users who supply their regular OS X password.
*Users entering their personal 24-character recovery key.
*Authorised IT staffers with access to the appropriate corporate recovery key.
You can even store your recovery key with Apple, if that sort of thing sits comfortably with you.
But you don’t need to trust Apple with the keys to your castle: we suggest simply writing down the recovery key on a piece of paper.
Then keep the paper under lock-and-key, old style.
How to bypass 4 digits lock code on MacBook. if you have a locked icloud iMac, MacBook, mac pro locked on passcode screen here is a solution for free.
this solution is based on Mount the locked drive on another machine or in an HD external cage, find the PIN inside icloud folder , re-install the locked drive into the original Mac, enter the PIN, all working again .
Tutorial:System Lock Pin Code Macbook AirHow to bypass 4 digits lock code on MacBook
the easy way, you will need SATA to USB adapter if you have a laptop without room for an additional drive.
first, remove the locked hard drive from your Mac. You can find detailed guides for your specific machine just google it or check youtube. install it on HD as an external machine.
Once booted into the alternate system, locate your locked drive.
In my case it was macintosh: Now browse to UsersusernameLibraryApplication SupportiCloud . In the folder “iCloud” find a file named with a bunch of numbers: ##########.lock In my case it was: 1138515150.lock, just write it down.How To Bypass System Lock Pin Code For Mac
Install the locked drive back into the original locked Mac.
its important that you put it back in the machine where it was originally locked so that the motherboard firmware will be unlocked in the next step.
Boot up the locked Mac and referencing the number you recorded, you can start trying 4 numbers at a time for the PIN. my file was 1138515150.lock
Try the first 4, then the second 4, and so on…
For example: 1138, 1385, 3851, 8515, 5151, 1515, 5150.
In my case, the PIN was the second to last 4 digits: 1515
If you typed in more than 10 combinations, then it says that you are locked out for a minute. Just restart the machine and continue entering the combinations from where you left off.
Once you enter the right PIN, the Mac will instantly reboot proceeding to where you were when the lockout occurred. It will also remove the firmware password.Mac Lock Computer
here it is new unlocked Mac!!! easy as that
More about MacBook pro:System Lock Pin Code Macbook AirRelated
Download here: http://gg.gg/vi113
https://diarynote.indered.space
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