from the doc: rsCRT will build a reverse remote shell EXECUTABLE with dest IP/PORT of your choice. The size of the EXE generated will be 1'536 bytes (1.5kb). It uses PEB to get the API functions offsets.When launched it will connect to the configured IP/PORT and give a shell. It is all coded in asm..
Backdoor.Win32.RsCrt [Kaspersky]Bck/Rscrt.A [Panda]HackTool.Win32.RsCrt [Kaspersky]remote shell [CREATOR]Win32/RsCrt.A trojan [Eset]Win32/RsCrt.NA trojan [Eset]
rscrt.exewinhost2.exe