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How to Exploit a Buffer Overflow Vulnerability
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In this video I demonstrate how to exploit a buffer overflow vulnerability. We will leverage this vulnerability to execute shellcode and pop a shell! In this video we reverse engineer the binary and step through the process of discovering and building a working exploit.
00:00 Introduction
00:55 Initial Triage
4:58 Static Analysis in Ghidra
14:18 Analysis Overview
14:32 Crashing the Binary
15:38 Debugging the Binary
16:00 Finding Main in GDB
17:00 Crashing the Binary in GDB
19:22 LEAVE/RET Instruction Explanation
22:00 Finding the Offset
24:28 Overwriting RSP
28:41 Executing Shellcode (Attempt 1 lol)
29:47 Executing Shellcode (Attempt 2!)
32:01 Examining Local Exploit Code
33:00 Running Local Exploit
33:48 Running Remote Exploit (Popping Shells!)
34:06 Grab flag
34:14 Conclusion
Download the binary here:
The binary is password protected: hackthebox
Follow me on social media:
Don't like videos? Check out my blog:
#reverseengineering #bufferoverflow #reversingwithbailey
00:00 Introduction
00:55 Initial Triage
4:58 Static Analysis in Ghidra
14:18 Analysis Overview
14:32 Crashing the Binary
15:38 Debugging the Binary
16:00 Finding Main in GDB
17:00 Crashing the Binary in GDB
19:22 LEAVE/RET Instruction Explanation
22:00 Finding the Offset
24:28 Overwriting RSP
28:41 Executing Shellcode (Attempt 1 lol)
29:47 Executing Shellcode (Attempt 2!)
32:01 Examining Local Exploit Code
33:00 Running Local Exploit
33:48 Running Remote Exploit (Popping Shells!)
34:06 Grab flag
34:14 Conclusion
Download the binary here:
The binary is password protected: hackthebox
Follow me on social media:
Don't like videos? Check out my blog:
#reverseengineering #bufferoverflow #reversingwithbailey
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