Security Notes
  • Whoami
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    • WEP-Pen
      • Reconnaissance
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            • csrf checklist
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          • Exposure of WSDL File Containing Sensitive Information
          • bussiness logic checklist
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          • reset_password_checklist
          • ATO
        • Cryptographic Failures
          • Cryptographic Failure
          • Weak Encoding for Password
          • Improper Following of a Certificate's Chain of Trust
            • Understanding Digital Certificates : Self-Signed and CA-Signed Certificate **
            • Transport Layer Security (TLS) and SSL **
          • Clear Text Transmission Of Sensitive Data
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        • Insecure Design
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            • Bypassing SOP with Iframes - part 1
            • Bypassing SOP with Iframes - part 2
            • Steal postmessage modifying iframe location
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      • eWPTXv2 Preparation
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        • API Discovry
        • Reverse Engineering API Documentation
        • Excessive Data Exposure
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          • Classic Authentication Attacks
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        • API Authorization Attacks
          • Broken Object Level Authorization (BOLA)
          • Broken Function Level Authorization
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      • Active Directory Pentesting
        • Active Directory Components
        • Initial Attack Vectors
          • LLMNR Poisoning
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          • IPv6 Attacks ( IPv6 DNS Takeover )
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          • Methodology
          • Some Other Attacks
            • Zerologon (CVE-2020-1472)
            • PrintNightmare (CVE-2021-1675)
        • Post-Compromise Attacks
          • Pass Attacks
          • Kerberoasting Attack
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          • LNK File Attack
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          • Mimikatz
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        • We've Compromised the Domain
          • Dumping the NTDS.dit
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        • Case Study
        • Password Attacks
      • Attack Vectors by Port
        • FTP 21
        • SSH 22
        • Telnet 23 - 2323
        • SMTP 25
        • DNS 53
        • Kerberos 88
        • POP 110-995
        • RPC 111
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        • NFS 2049
        • MySql 3306
        • RDP 3389
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        • WinRM 5985 5986
        • VNC 5800 5900
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        • Unreal IRC 6667
        • Tomcat 8080
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        • http 80
      • Network basics
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        • Windows Privilege Escalation
        • Linux Privilege Escalation
    • write-ups
      • How i found a Privilege Escalation via Impersonation Features feature
      • How I was able to discover ATO Via IDOR vulnerability
      • Easy full Account Takeover via Facebook OAuth Misconfiguration
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On this page
  • Step 1: Navigate through the login page.
  • Step 2: Navigate to /assets.
  • Step 3: Inspect the database file.
  • Step 4: Crack the hash
  • Step 5: Login with the derived credentials.
  1. Pentesting
  2. WEP-Pen
  3. OWSAP TOP 10
  4. Cryptographic Failures

Cryptographic Failure

this lab covers a lot of basic cwes like CWE-327, CWE-759, CWE-916, CWE-319, CWE-523

PreviousCryptographic FailuresNextWeak Encoding for Password

Last updated 2 months ago

To better understand Cryptographic Failures, I will walk you through the Cryptographic Failures module in TryHackMe’s OWASP Top 10 room. In this scenario, we will analyze a vulnerable "Sense and Sensitivity" website.

Step 1: Navigate through the login page.

View the source code of the login page.

The developer has left a comment revealing that the database is stored in the /assets directory.

Step 2: Navigate to /assets.

There is, in fact, a web application database (webapp.db) stored in the /assets directory. Databases stored as files are known as ‘flat-file’ databases.

Step 3: Inspect the database file.

Click on the file to download it.

Determine the file type.

file webapp.db

The database is a SQlite database

Dump the database

sqlite3 webapp.db

Dump the tables.

.tables

Dump users.

PRAGMA table_info(users);
SELECT * FROM users;

We now have access to usernames and password hashes. Following the order, the second column contains the usernames, and the third column contains the password hashes.

Username:admin 
Password Hash:6eea9b7ef19179a06954edd0f6c05ceb

Step 4: Crack the hash

Crack the hash using CrackStation.

The hash has been identified as an MD5 hash and successfully cracked to reveal the plaintext password ‘qwertyuiop’.

Step 5: Login with the derived credentials.

Navigate back to the login page and use the credentials.

Username: admin
Password: qwertyuiop

We now have admin access and can perform actions, including adding and deleting users.

Cryptographic flaws, including the use of weak algorithms such as MD5, coupled with data exposure, can result in the compromise of sensitive information and systems.