Binary Exploitation (CTF / Pwn) Expert Needed – Local & Remote Exploit Development

Project Details:

Two separate challenge binaries (Linux ELF, x86_64)
Source code will be provided
libc.so.6 will be provided
Remote services are available for both challenges
Goal: exploit vulnerabilities to gain control of execution and call the internal function to retrieve flags

Requirements:

Analyze each binary and identify the vulnerability (e.g., buffer overflow, format string, etc.)
Develop a working exploit for each challenge
Ensure the exploit works both locally and against the remote service
Use Python (pwntools) for exploit scripts

Deliverables:

task1.py → working exploit for challenge 1
task2.py → working exploit for challenge 2
read.md → explanation of vulnerabilities and exploitation steps
flags.txt → both flags obtained from the challenges

Required Skills:

Strong experience in binary exploitation (pwn)
Familiarity with GDB / pwndbg / gef
Experience with pwntools (Python)
Understanding of protections such as NX, PIE, RELRO
Prior CTF or reverse engineering experience preferred

Please include in your proposal:

Examples of similar CTF or pwn challenges you have solved
Your approach to solving this type of problem
Estimated time to complete
I will share details with you after contact confirmation.
*Per task will be 8-10 Euro