Category: Reverse Engineering

IOLI Crackme 0x04 walkthrough — the password is any digits that sum to 15, revealed by tracing sscanf-based accumulation through static analysis in IDA.

IOLI Crackme 0x03 walkthrough — reverse engineering a Caesar-style cipher that shifts each character by 3 to decode garbled success and failure strings.

IOLI Crackme 0x02 walkthrough — computing the password via static analysis of x86 arithmetic, then confirming with dynamic analysis by stepping through IDA.

IOLI Crackme 0x01 walkthrough — converting hex to decimal to find the password, plus a closer look at how arguments are passed to functions in x86 assembly.

IOLI Crackme 0x00 walkthrough — finding the hardcoded password in IDA Pro and patching the binary to accept any input by changing a jz opcode to jmp.