Question: I ' m currently working on reverse engineering phase _ 2 of a challenge, and I ' m having trouble understanding the assembly code. Additionally,
Im currently working on reverse engineering phase of a challenge, and Im having trouble understanding the assembly code. Additionally, I need assistance with extracting the six numbers provided as input. Here's the assembly code for phase:
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xf push rbx
xf sub $xrsp
xf mov rsprsi
xf callq xb
xfd cmpl $xersp
xf jne xfa
xf mov $xebx
xf jmp xf
xfa callq x
xff jmp xf
xf callq x
xf add $xrbx
xfa cmp $xrbx
xfe je xf
xf mov rsprbxeax
xf sub xrsprbxeax
xf mov ebx,edx
xf imul ebx,edx
xfc cmp edx,eax
xfe jge xf
xf jmp xf
xf add $xrsp
xf pop rbx
xf retq
b :
b: ec sub $xrsp
f: f mov rsi,rdx
: d e lea xrsircx
: d lea xrsirax
a: push rax
b: d lea xrsirax
f: push rax
: c d e c lea xcrsir
: c d lea xrsir
: be a mov $xaesi
d: b mov $xeax
: e a f ff ff callq cisocsscanf@plt
: c add $xrsp
b: f cmp $xeax
e: e jle
: c add $xrsp
: c retq
: bf mov $xedi
a: e e f ff ff callq c
I understand the basic structure of the function, but Im struggling with some specific parts, such as the conditional jumps and the use of registers. Additionally, I need help extracting the six numbers provided as input by the readsixnumbers function.
Could someone please assist me in extracting the six numbers?
Thank you very much for your help!
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