Byte JMP

#htb

16 posts

Administrator: ACL Abuse Chain to DCSync
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Administrator: ACL Abuse Chain to DCSync

Hack The Box write-up for the Administrator machine. GenericAll over a user chains into password resets through three accounts, FTP access recovers a Password Safe database, cracked credentials land a shell as a fourth user, targeted Kerberoasting via GenericWrite recovers a fifth account, and DCSync extracts the domain administrator's hash.

—14 min read
Tombwatcher: Targeted Kerberoasting to AD Recycle Bin and ADCS ESC15
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Tombwatcher: Targeted Kerberoasting to AD Recycle Bin and ADCS ESC15

Hack The Box write-up for the Tombwatcher machine. WriteSPN over Alfred enables a targeted Kerberoast, cracked credentials chain through group self-enrollment, gMSA password extraction, a sequence of ACL abuses across four accounts, and a WinRM shell on the DC. GenericAll over the ADCS OU leads to the AD Recycle Bin, where a deleted cert_admin account maps to an unresolved SID with enrollment rights on a schema version 1 template, and an ESC15 enrollment agent hijack escalates to Domain Admin.

—17 min read
Certified: ACL Abuse and ADCS ESC9
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Certified: ACL Abuse and ADCS ESC9

Hack The Box write-up for the Certified machine. WriteOwner over a delegation group chains into GenericWrite for Shadow Credentials on a service account, WinRM lands a shell, GenericAll over the CA operator enables a second Shadow Credentials attack, and an ADCS ESC9 UPN hijack escalates to Domain Admin.

—16 min read
Heist: Cisco Config Credential Reuse to Firefox Credential Leak
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Heist: Cisco Config Credential Reuse to Firefox Credential Leak

Hack The Box write-up for the Heist machine. A support portal with guest access exposes a Cisco router configuration containing encrypted credentials. Cracking and decoding recovers three passwords, one of which maps to a Windows account via password spraying. RID brute force reveals additional users and a second valid credential pair lands WinRM as Chase. The Mozilla Maintenance Service log leaks the Administrator password in a command line argument, completing the box.

—9 min read
ServMon: NVMS-1000 Directory Traversal to NSClient++ RCE
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ServMon: NVMS-1000 Directory Traversal to NSClient++ RCE

Hack The Box write-up for the ServMon machine. Anonymous FTP exposes internal notes pointing to a password file on a user's desktop, a directory traversal in NVMS-1000 reads the file remotely, password spraying lands SSH as Nadine, and authenticated RCE against NSClient++ through an SSH tunnel escalates to SYSTEM.

—11 min read
Blackfield: AS-REP Roasting to LSASS Dump and SeBackupPrivilege
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Blackfield: AS-REP Roasting to LSASS Dump and SeBackupPrivilege

Hack The Box write-up for the Blackfield machine. Guest SMB access leaks a user list from the profiles$ share, AS-REP roasting cracks the support account, BloodHound reveals ForceChangePassword over audit2020, the forensic share yields an LSASS dump with svc_backup's NT hash, and SeBackupPrivilege extracts ntds.dit for full domain compromise.

—13 min read
Puppy: KeePass Recovery to DPAPI Credential Theft
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Puppy: KeePass Recovery to DPAPI Credential Theft

Hack The Box write-up for the Puppy machine. ACL abuse through nested group membership grants access to a development share holding a KeePass database, cracked passwords pivot through a chain of GenericAll to enable a disabled account and land a shell, a backup archive leaks LDAP bind credentials, and DPAPI decryption of a stored Windows credential recovers an administrative account.

—16 min read
Cascade: Legacy LDAP Secrets to AD Recycle Bin
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Cascade: Legacy LDAP Secrets to AD Recycle Bin

Hack The Box write-up for the Cascade machine. Anonymous LDAP leaks a legacy password attribute, a TightVNC blob and a .NET audit tool give up reused service-account credentials, and the AD Recycle Bin recovers a deleted TempAdmin whose password matches the domain administrator.

—14 min read
Monteverde: Azure AD Connect to Domain Admin
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Monteverde: Azure AD Connect to Domain Admin

Hack The Box write-up for the Monteverde machine. Anonymous RPC user enumeration feeds a username-as-password spray, a service account exposes a stored Azure credential over SMB, and Azure AD Connect credential extraction hands over the on-prem Administrator.

—13 min read
Timelapse: PFX Cracking to LAPS
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Timelapse: PFX Cracking to LAPS

Hack The Box write-up for the Timelapse machine. Anonymous SMB exposes a password-protected WinRM certificate backup, cracked to gain a foothold over TLS, PowerShell console history leaks a service account, and LAPS_Readers membership hands over the local Administrator password.

—11 min read
Fluffy: Shadow Credentials and ADCS ESC16
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Fluffy: Shadow Credentials and ADCS ESC16

Active Directory chain — CVE-2025-24071 hash leak, Shadow Credentials via GenericWrite, and ADCS ESC16 UPN hijack to Domain Admin.

—17 min read
Sauna: AS-REP Roasting to DCSync
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Sauna: AS-REP Roasting to DCSync

Hack The Box write-up for the Sauna machine. Employee names from a website feed Kerberos user enumeration, AS-REP roasting yields credentials, autologon secrets pivot to a service account with DCSync rights, and pass-the-hash completes the domain compromise.

—12 min read
Return: LDAP Credential Capture to Server Operators Abuse
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Return: LDAP Credential Capture to Server Operators Abuse

Hack The Box write-up for the Return machine. LDAP credential capture via printer admin panel, WinRM access, and privilege escalation abusing the Server Operators group.

—6 min read
Sense: Authenticated RCE on pfSense
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Sense: Authenticated RCE on pfSense

Hack The Box write-up for the Sense machine. Credential discovery via exposed text files leads to authenticated command injection on pfSense 2.1.3, resulting in root shell access.

—9 min read
Flag Command – Hack The Box
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Flag Command – Hack The Box

Solving Flag Command (HackTheBox): a web challenge hiding secrets in JavaScript client-side logic.

—5 min read
SpookPass – Hack The Box
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SpookPass – Hack The Box

Reverse engineering SpookPass (HackTheBox): analyzing an ELF binary to extract the hidden password.

—6 min read