Reverse engineering with okteta
In the last week I was hacking on OpenBSC to make GSM 12.21 Software Load usable for the ip.access nanoBTS. The difficulta was not within GSM 12.21 as Harald had it implemented for the Siemens BS11 BTS. The difficulty was that some messages need to contain paramaters and these come directly from the firmware file which ultimately means that one needs to understand the firmware file format to extract these. okteta came to rescue me and it was extremely good…