Builds a hashmap of AD NTLM hashes/usernames and iterates through a second list of hashes checking for the existence of each entry in the AD NTLM hashmap
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Match-ADHashes.ps1 Added example to .OUTPUTS Aug 16, 2018
README.md Added example to .OUTPUTS Aug 16, 2018

README.md

Match-ADHashes

Builds a hashmap of AD NTLM hashes/usernames and iterates through a second list of hashes checking for the existence of each entry in the AD NTLM hashmap

<# .NAME Match-ADHashes

.SYNOPSIS Matches AD NTLM Hashes against other list of hashes

.DESCRIPTION Builds a hashmap of AD NTLM hashes/usernames and iterates through a second list of hashes checking for the existence of each entry in the AD NTLM hashmap -Outputs results as object including username, hash, and frequency in database -Frequency is included in output to provide additional context on the password. A high frequency (> 5) may indicate password is commonly used and not necessarily linked to specific user's password re-use.

.PARAMETER ADNTHashes File Path to 'Hashcat' formatted .txt file (username:hash)

.PARAMETER HashDictionary File Path to 'Troy Hunt Pwned Passwords' formatted .txt file (HASH:frequencycount)

.PARAMETER Verbose Provide run-time of function in Verbose output

.EXAMPLE $results = Match-ADHashes -ADNTHashes C:\temp\adnthashes.txt -HashDictionary -C:\temp\Hashlist.txt

.OUTPUTS Array of HashTables with properties "User", "Frequency", "Hash" User Frequency Hash
---- --------- ----
{TestUser2, TestUser3} 20129 H1H1H1H1H1H1H1H1H1H1H1H1H1H1H1H1 {TestUser1} 1 H2H2H2H2H2H2H2H2H2H2H2H2H2H2H2H2

.NOTES If you are seeing results for User truncated as {user1, user2, user3...} consider modifying the Preference variable $FormatEnumerationLimit (set to -1 for unlimited)

=INSPIRATION / SOURCES / RELATED WORK
    -DSInternal Project https://www.dsinternals.com
    -Checkpot Project https://github.com/ryhanson/checkpot/

=FUTURE WORK
    -Performance Testing, optimization
    -Other Languages (golang?)

.LINK https://github.com/DGG-IT/Match-ADHashes/

#>