Green’s Dictionary of Slang

(S.Afr.) a villain, a rascal; thus skabeng v., to steal.

1975		J. McClure Snake 84: One of these skabengas could hide in the grass. [Ibid.] 128: ‘Last I know of him, he was working at the brickworks.’ ‘That skebengas’ paradise! But that means he’s pretty washed up then, in with the hard-case assaults and the rest.’ [Ibid.] 163: He was a real skabenga when he was small that one.
2008		A. Lovejoy ‘The Smell of Tears’ at www.acidalex.com 🌐 3: The laaitie gangster naaiers he stole it [i.e. a gun] from will make his bones white if they find out he skebenged it.