rahulr.in

Security writeups
and research notes.

[email protected]:~$ whoami
Rahul R · Security Engineer · Penetration Tester
Dubai, UAE
[email protected]:~$ cat interests.txt
pentesting · active directory · cloud · android
reverse engineering · malware · hardware · ctf
[email protected]:~$ ls -la blog/
 19  posts          5  htb-writeups
  9  categories    52  tags
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Elite Hacker · #75 global · 1701 pts · 256/239 owns
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capture the flag••13 min

CyberShelter - Shelter Bank Heist (GISEC 2026)

Writeup for the Shelter Bank Heist event at GISEC 2026 - LDAP injection in a bank's support lookup leaks a domain user, a BloodHound gMSA edge turns that into jump-server admin, a ligolo-ng pivot opens the firewalled parent domain, and an ESC8 NTLM relay through a hijacked SMB port into AD CS web enrollment ends with a SIDHistory golden ticket, a parent-domain DCSync, and a settled $10M transfer.

tryhackme••4 min

Tryhackme Ra Walkthrough

Ra is a windows machine which starts with a typical business website for Windcorp where there is a password reset function which can be used to change a user's password to gain access to a SMB share to download spark live chat application which is vulnerable that can be used to harvest a user's NTLM hash that can be used to gain initial access to the machine.On further exploring the machine a script can be seen that contains a username who's password can be changed since the user has extended rights to change password as he is a member of the account operator group.Analysing the script we can see that there is command injection vulnerability that can be abused to gain admin privilege and pwn the machine

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