Check scripts in package.json for preinstall or postinstall commands that execute obfuscated bash or PowerShell code. 3. Deep Dive: Obfuscated Code
Check for library names that look slightly "off" (e.g., requests vs requesst ).
Below is a template for a professional write-up based on standard CTF methodologies for this type of file. Challenge Name: Santa Baby's Dependencies Category: Forensics / Reverse Engineering / Supply Chain File Provided: Vecterror_-_Santa_Babys_Dependencies.rar Vecterror_-_Santa_Babys_Dependencies.rar
Run strings on the RAR or the extracted binaries to look for hardcoded flags (e.g., CTF{...} ) or suspicious URLs. 2. Analyzing the "Dependencies"
Search for eval() , exec() , or Base64-encoded strings. Check scripts in package
Look for private packages that might have been overshadowed by malicious public versions.
The solution likely involves identifying a malicious post-install script in a fake dependency that exfiltrates the flag to a "Vecterror" controlled domain. json or a script? Below is a template for a professional write-up
Since the title highlights "Dependencies," the vulnerability is likely buried in the project's external libraries: