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function address still changed with ASLR disabled and canary not set during compiling

Reverse Engineering Asked by Redshrimp on September 22, 2020

issue
Background: It is a x64 linux executable, and I am trying to jump to function sym.redirect_call @ 0x00401184, with 120 byte nopled plus 8 byte for the new address. However, every time when I insert the payload the last 8 byte changed, which makes the jump unavailable. I wonder why this is happening? I’ve disabled the ASLR on my machine, and canary flag is not set during compiling. For more details, please check the picture that I attached. Any help will be appreciated!

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