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59 lines
2.4 KiB
Markdown
59 lines
2.4 KiB
Markdown
# chntpw
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Notes
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This manual page documents briefly the chntpw command. This manual page was written for the Debian distribution because the original program does not have a manual page.
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chntpw is a utility to view some information and change user passwords in a Windows NT/2000 SAM userdatabase file, usually located at \WINDOWS\system32\config\SAM on the Windows file system. It is not necessary to
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know the old passwords to reset them. In addition it contains a simple registry editor (same size data writes) and hex-editor with which the information contained in a registry file can be browsed and modified.
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Help Text
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```
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chntpw version 0.99.6 080526 (sixtyfour), (c) Petter N Hagen
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chntpw: change password of a user in a NT/2k/XP/2k3/Vista SAM file, or invoke registry editor.
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chntpw [OPTIONS] <samfile> [systemfile] [securityfile] [otherreghive] [...]
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-h This message
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-u <user> Username to change, Administrator is default
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-l list all users in SAM file
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-i Interactive. List users (as -l) then ask for username to change
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-e Registry editor. Now with full write support!
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-d Enter buffer debugger instead (hex editor),
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-t Trace. Show hexdump of structs/segments. (deprecated debug function)
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-v Be a little more verbose (for debuging)
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-L Write names of changed files to /tmp/changed
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-N No allocation mode. Only (old style) same length overwrites possible
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See readme file on how to get to the registry files, and what they are.
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Source/binary freely distributable under GPL v2 license. See README for details.
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NOTE: This program is somewhat hackish! You are on your own!
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```
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Example Usage
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Mount the Windows file system and enters the directory \WINDOWS\system32\config where Windows stores the SAM database.
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```
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ntfs-3g /dev/sda1 /media/win ; cd /media/win/WINDOWS/system32/config/
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```
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Opens registry hives SAM and system and change administrator account. This will work even if the name
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has been changed or it has been localized (since different language versions of NT use different
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administrator names).
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```
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chntpw SAM system
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```
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Lists the users defined in the SAM registry file.
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```
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chntpw -l SAM
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```
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Prompts for password for jabbathehutt and changes it in the SAM registry file, if found (otherwise do nothing).
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```
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chntpw -u jabbathehutt SAM
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```
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Links
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