Freaks City

When debugging complex heap vulnerabilities, it helps to first develop exploits using a debug-enabled libc version that supports source-level debugging. Once the exploit works, you can then adjust the offsets to target the specific libc provided with the challenge. Unlink Exploitation Consider a scenario where allocating chunks also stores poin ...

To learn IO_FILE-based heap exploitation, we must understand its underlying mechanism. This article examines several key IO functions using source code analysis and dynamic debugging. 1. fwrite Function Overview 1.1 Overall Flow The main implementation of fwrite resides in _IO_new_file_xsputn, containing four distinct phases: Check remaining s ...