In this challenge, I analyze a custom compiler/interpreter coded in Golang with a hidden instruction that is used to obtain the flag under specific conditions. Triage The binary is stripped, but...

In this challenge, there is a SQL injection via raw md5 hashes, using the leaked keys, our ticket is forged, and the flag is obtained. First looks When pressing the “I’m a Passenger” button, we ...

In this writeup I analyze an ELF with modifications at runtime. The key is derived through a combination of static and dynamic analysis. Background SquirelCTF challenge, called “bin fun”. Stati...

In this writeup, I analyze a movfuscated binary that takes no input and gives no output, then I use diffing and tracing to obtain the flag. The Crackme’s Background In the past, I have seen Ch...