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A dummy allocator ptmalloc-inspired that we use to introduce n00bs to heap exploitation
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========= trxmalloc ========= 1) Overview ----------- A dummy allocator that we use to introduce n00bs to heap exploitation. trxmalloc is inspired by ptmalloc and many concepts are still valid on the standard glibc allocator. The code were developed by malweisse and anticlockwise and it is licensed under BSD 2-Clause. 2) Build -------- Just use the Makefile. $ make Build a release version of libtrxmalloc.so. It can be linked or preloaded. $ make debug Build a debug version of libtrxmalloc.so. This enables debug prints. 3) Test ------- The test system is naive. It is just a fuzzy binary. $ make test Build the test binary. $ sh test.sh Run the test binary many times until a crash. The test binary uses random integers and the seed is saved in the last_seed file every execution. 4) Usage -------- To compile a binary linking libtrxmalloc.so: $ cc program.c -o program -L /path/to/trxmalloc -l trxmalloc \ -Wl,-rpath=/path/to/trxmalloc To load trxmalloc in place of the standard allocator (not needed when compiling using the command above) just preload it: $ env LD_PRELOAD=/path/to/trxmalloc/libctrxmalloc.so ./program