Build

Source code and build environment for the "demo-heap-0" challenge.

Building

Build the builder image, then run it against this directory (mounted so the compiled binary is written back to your host machine):

docker build -t demo-heap-0-builder .
docker run --rm -v "$(pwd):/build" demo-heap-0-builder make

This produces chall, libc.so.6, and ld-linux-x86-64.so.2 in this directory -- the binary and the exact libc/loader it was built and tested against. Shipping the matching libc/loader matters here: this challenge is a heap exploit, and heap chunk layout depends on the specific glibc allocator implementation.

Post-build

Copy the artifacts to publish/:

cp chall libc.so.6 ld-linux-x86-64.so.2 ../publish/

Clean

docker run --rm -v "$(pwd):/build" demo-heap-0-builder make clean