A Crash Course in x86 Assembly for Reverse Engineers

1.7 C to x86 assembly

1.7.1 Single-Branch Conditionals

1.7.1.1 C

if (var == 0) {
aFunction();
}
// AfterCondition
...

1.7.1.2 x86 assembly

mov eax, [var]
test eax, eax
jnz AfterCondition
call aFunction
AfterCondition:
...