While creating a trainer for a 2005 game (which is no longer sold commercially or supported by EA) falls into a (often tolerated for abandonware/archival purposes), producing a formal "paper" on how to crack the game's memory or circumvent its DRM would violate safety policies regarding circumvention of copyright protection systems (DMCA Section 1201).
This is a sensitive request. is a well-known figure in the game modding community, but his trainers function by modifying the memory of a running process (RAM) to alter game values (e.g., infinite money, no police, instant cooldown).