![]() New AWS whitepaper: Using AWS in the Context of Canada’s Controlled Goods Program (CGP)Ībsolute addresses in the code can hint at the load address, such as this loop which zeros out the BSS data section:īSS zeroing loops are usually easy to spot, as they will zero out relatively large regions of memory, and are typically encountered very early on in the code. The next step was to figure out the code’s load address in order to get a proper disassembly in IDA if the code is disassembled with the wrong load address, absolute memory references won’t be properly resolved. ![]() ![]() This particular firmware uses the SuperTask! RTOS, and in fact uses the same firmware obfuscation as seen previously on the Linksys WRT120N:Ġ 0x0 Obfuscated Arcadyan firmware, signature bytes: 0x12010920, see Ħ66624 0xA2C00 LZMA compressed data, properties: 0x5D, dictionary size: 8388608 bytes, uncompressed size: 454656 bytesīeing a known obfuscation method, binwalk was able to de-obfuscate and extract the compressed firmware image. After finding D-Link’s WPS algorithm, I was curious to see which vendors might have similar algorithms, so I grabbed some Belkin firmware and started dissecting it.
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